요약·해설과 원문, 전문 번역을 서로 분리했습니다. API 이름, symbol, source path는 원문 표기를 사용합니다.
1. 요약·해설
원문의 핵심 논리와 kernel programming 관점의 보충 설명입니다. 아래의 전문 번역과는 별도로 작성했습니다.
Sampling, units and processed values
sysfs-bus-iio:87-316sampling_frequency와 available 속성은 데이터 획득 속도를 정의합니다. 각 채널의 raw·input, scale·offset과 물리량별 단위 규칙을 함께 읽어야 원시 센서 값을 올바른 처리값으로 변환할 수 있습니다.
Channels, calibration and outputs
sysfs-bus-iio:317-857가속도·각속도·자기장·방향·전압·온도 등 채널은 extrema, calibration bias/scale, filter, power mode와 output 속성을 공유하는 명명 규칙으로 노출됩니다. 장치별 특수 속성도 같은 채널 유형과 수정자 체계 안에 배치됩니다.
Hardware event configuration
sysfs-bus-iio:859-1408이벤트 ABI는 threshold와 rate-of-change의 방향별 enable·value·hysteresis·period를 분리합니다. 활동 상태, magnitude, 걸음 변화와 adaptive threshold는 장치가 지원하는 파라미터를 모두 설정한 뒤 이벤트를 활성화해야 일관되게 동작합니다.
Triggered buffers and hardware FIFO
sysfs-bus-iio:1410-1893current_trigger와 bufferY는 캡처를 시작하고, _en·_index·_type 조합은 한 스캔의 채널 존재 여부·순서·저장 형식을 결정합니다. watermark, data_available과 hwfifo 속성은 차단 읽기, poll, 내부 FIFO flush와 최대 지연을 제어합니다.
Sensor-specific measurements and coordinates
sysfs-bus-iio:1895-2104방사율·농도·저항·pH·전기전도도 같은 센서별 값의 단위와 보정 규칙을 정의합니다. mount_matrix는 보드 기준 좌표계에 대한 센서 칩의 회전을 제공하므로 애플리케이션이 샘플을 공통 좌표계로 정렬할 수 있습니다.
Optical sensing, calibration and gestures
sysfs-bus-iio:2106-2298광학·열전대 속성, 채널별 주파수와 자동·강제 교정 ABI를 설명합니다. 탭 제스처는 감도 임계값과 reset timeout, 두 번째 탭 지연, peak 간 시간을 각각 노출해 장치별 감지기를 조정하게 합니다.
Filter modes and newer channel attributes
sysfs-bus-iio:2300-2424sinc 계열과 post filter·60 Hz 제거·wideband 모드를 선택하고, 근접 누적 조건과 색온도·색도·이벤트 라벨·탭 확인 timeout·shunt 저항·attention 같은 최신 ABI를 제공합니다.
2. 영어 원문 전체
번역 기준이 된 Linux v6.18.37 원문입니다. 줄 번호는 이 버전의 파일 좌표입니다.
원문 전체 펼치기
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What: /sys/bus/iio/devices/iio:deviceX
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KernelVersion: 2.6.35
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Contact: linux-iio@vger.kernel.org
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Description:
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Hardware chip or device accessed by one communication port.
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Corresponds to a grouping of sensor channels. X is the IIO
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index of the device.
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What: /sys/bus/iio/devices/triggerX
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KernelVersion: 2.6.35
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Contact: linux-iio@vger.kernel.org
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Description:
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An event driven driver of data capture to an in kernel buffer.
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May be provided by a device driver that also has an IIO device
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based on hardware generated events (e.g. data ready) or
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provided by a separate driver for other hardware (e.g.
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periodic timer, GPIO or high resolution timer).
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Contains trigger type specific elements. These do not
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generalize well and hence are not documented in this file.
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X is the IIO index of the trigger.
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What: /sys/bus/iio/devices/iio:deviceX/buffer
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KernelVersion: 2.6.35
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Contact: linux-iio@vger.kernel.org
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Description:
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Directory of attributes relating to the buffer for the device.
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What: /sys/bus/iio/devices/iio:deviceX/name
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KernelVersion: 2.6.35
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Contact: linux-iio@vger.kernel.org
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Description:
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Description of the physical chip / device for device X.
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Typically a part number.
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What: /sys/bus/iio/devices/iio:deviceX/label
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KernelVersion: 5.8
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Contact: linux-iio@vger.kernel.org
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Description:
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Optional symbolic label for a device.
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This is useful for userspace to be able to better identify an
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individual device.
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The contents of the label are free-form, but there are some
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standardized uses:
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For proximity sensors which give the proximity (of a person) to
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a certain wlan or wwan antenna the following standardized labels
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are used:
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* "proximity-wifi"
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* "proximity-lte"
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* "proximity-wifi-lte"
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* "proximity-wifi-left"
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* "proximity-wifi-right"
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These are used to indicate to userspace that these proximity
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sensors may be used to tune transmit power to ensure that
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Specific Absorption Rate (SAR) limits are honored.
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The "-left" and "-right" labels are for devices with multiple
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antennas.
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In some laptops/tablets the standardized proximity sensor labels
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instead indicate proximity to a specific part of the device:
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* "proximity-palmrest" indicates proximity to the keyboard's palmrest
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* "proximity-palmrest-left" indicates proximity to the left part of the palmrest
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* "proximity-palmrest-right" indicates proximity to the right part of the palmrest
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* "proximity-lap" indicates the device is being used on someone's lap
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Note "proximity-lap" is special in that its value may be
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calculated by firmware from other sensor readings, rather then
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being a raw sensor reading.
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For accelerometers used in 2-in-1s with 360° (yoga-style) hinges,
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which have an accelerometer in both their base and their display,
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the following standardized labels are used:
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* "accel-base"
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* "accel-display"
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For devices where an accelerometer is housed in the swivel camera subassembly
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(for AR application), the following standardized label is used:
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* "accel-camera"
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What: /sys/bus/iio/devices/iio:deviceX/current_timestamp_clock
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KernelVersion: 4.5
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Contact: linux-iio@vger.kernel.org
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Description:
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String identifying current posix clock used to timestamp
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buffered samples and events for device X.
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What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency
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What: /sys/bus/iio/devices/iio:deviceX/in_intensity_sampling_frequency
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What: /sys/bus/iio/devices/iio:deviceX/buffer/sampling_frequency
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What: /sys/bus/iio/devices/iio:deviceX/events/sampling_frequency
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What: /sys/bus/iio/devices/triggerX/sampling_frequency
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KernelVersion: 2.6.35
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Contact: linux-iio@vger.kernel.org
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Description:
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Some devices have internal clocks. This parameter sets the
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resulting sampling frequency. In many devices this
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parameter has an effect on input filters etc. rather than
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simply controlling when the input is sampled. As this
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affects data ready triggers, hardware buffers and the sysfs
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direct access interfaces, it may be found in any of the
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relevant directories. If it affects all of the above
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then it is to be found in the base device directory.
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The stm32-timer-trigger has the additional characteristic that
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a sampling_frequency of 0 is defined to stop sampling.
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What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency_available
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What: /sys/bus/iio/devices/iio:deviceX/in_intensity_sampling_frequency_available
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What: /sys/bus/iio/devices/iio:deviceX/in_proximity_sampling_frequency_available
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What: /sys/.../iio:deviceX/buffer/sampling_frequency_available
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What: /sys/bus/iio/devices/triggerX/sampling_frequency_available
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KernelVersion: 2.6.35
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Contact: linux-iio@vger.kernel.org
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Description:
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When the internal sampling clock can only take a specific set of
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frequencies, we can specify the available values with:
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- a small discrete set of values like "0 2 4 6 8"
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- a range with minimum, step and maximum frequencies like
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"[min step max]"
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What: /sys/bus/iio/devices/iio:deviceX/oversampling_ratio
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KernelVersion: 2.6.38
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Contact: linux-iio@vger.kernel.org
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Description:
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Hardware dependent ADC oversampling. Controls the sampling ratio
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of the digital filter if available.
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What: /sys/bus/iio/devices/iio:deviceX/oversampling_ratio_available
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KernelVersion: 2.6.38
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Contact: linux-iio@vger.kernel.org
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Description:
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Hardware dependent values supported by the oversampling filter.
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What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_raw
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KernelVersion: 2.6.35
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Contact: linux-iio@vger.kernel.org
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Description:
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Raw (unscaled no bias removal etc.) voltage measurement from
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channel Y. In special cases where the channel does not
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correspond to externally available input one of the named
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versions may be used. The number must always be specified and
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unique to allow association with event codes. Units after
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application of scale and offset are millivolts.
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Channels with 'i' and 'q' modifiers always exist in pairs and both
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channels refer to the same signal. The 'i' channel contains the in-phase
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component of the signal while the 'q' channel contains the quadrature
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component.
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What: /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_raw
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KernelVersion: 2.6.35
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Contact: linux-iio@vger.kernel.org
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Description:
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Raw (unscaled) differential voltage measurement equivalent to
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channel Y - channel Z where these channel numbers apply to the
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physically equivalent inputs when non differential readings are
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separately available. In differential only parts, then all that
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is required is a consistent labeling. Units after application
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of scale and offset are millivolts.
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What: /sys/bus/iio/devices/iio:deviceX/in_altvoltageY_rms_raw
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KernelVersion: 6.18
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Contact: linux-iio@vger.kernel.org
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Description:
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Raw (unscaled) Root Mean Square (RMS) voltage measurement from
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channel Y. Units after application of scale and offset are
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millivolts.
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What: /sys/bus/iio/devices/iio:deviceX/in_powerY_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_powerY_active_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_powerY_reactive_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_powerY_apparent_raw
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KernelVersion: 4.5
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Contact: linux-iio@vger.kernel.org
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Description:
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Raw (unscaled no bias removal etc.) power measurement from
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channel Y. The number must always be specified and
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unique to allow association with event codes. Units after
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application of scale and offset are milliwatts.
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What: /sys/bus/iio/devices/iio:deviceX/in_powerY_powerfactor
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KernelVersion: 6.18
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Contact: linux-iio@vger.kernel.org
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Description:
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Power factor measurement from channel Y. Power factor is the
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ratio of active power to apparent power. The value is unitless.
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What: /sys/bus/iio/devices/iio:deviceX/in_capacitanceY_raw
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KernelVersion: 3.2
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Contact: linux-iio@vger.kernel.org
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Description:
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Raw capacitance measurement from channel Y. Units after
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application of scale and offset are nanofarads.
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What: /sys/.../iio:deviceX/in_capacitanceY-capacitanceZ_raw
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KernelVersion: 3.2
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Contact: linux-iio@vger.kernel.org
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Description:
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Raw differential capacitance measurement equivalent to
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channel Y - channel Z where these channel numbers apply to the
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physically equivalent inputs when non differential readings are
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separately available. In differential only parts, then all that
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is required is a consistent labeling. Units after application
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of scale and offset are nanofarads.
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What: /sys/.../iio:deviceX/in_capacitanceY-capacitanceZ_zeropoint
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KernelVersion: 6.1
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Contact: linux-iio@vger.kernel.org
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Description:
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For differential channels, this an offset that is applied
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equally to both inputs. As the reading is of the difference
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between the two inputs, this should not be applied to the _raw
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reading by userspace (unlike _offset) and unlike calibbias
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it does not affect the differential value measured because
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the effect of _zeropoint cancels out across the two inputs
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that make up the differential pair. It's purpose is to bring
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the individual signals, before the differential is measured,
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within the measurement range of the device. The naming is
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chosen because if the separate inputs that make the
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differential pair are drawn on a graph in their
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_raw units, this is the value that the zero point on the
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measurement axis represents. It is expressed with the
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same scaling as _raw.
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What: /sys/bus/iio/devices/iio:deviceX/in_temp_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_tempY_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_temp_x_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_temp_y_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_temp_ambient_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_raw
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KernelVersion: 2.6.35
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Contact: linux-iio@vger.kernel.org
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Description:
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Raw (unscaled no bias removal etc.) temperature measurement.
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If an axis is specified it generally means that the temperature
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sensor is associated with one part of a compound device (e.g.
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a gyroscope axis). The ambient and object modifiers distinguish
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between ambient (reference) and distant temperature for contact-
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less measurements. Units after application of scale and offset
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are milli degrees Celsius.
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What: /sys/bus/iio/devices/iio:deviceX/in_tempY_input
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What: /sys/bus/iio/devices/iio:deviceX/in_temp_input
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KernelVersion: 2.6.38
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Contact: linux-iio@vger.kernel.org
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Description:
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Scaled temperature measurement in milli degrees Celsius.
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What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_raw
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KernelVersion: 2.6.35
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Contact: linux-iio@vger.kernel.org
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Description:
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Acceleration in direction x, y or z (may be arbitrarily assigned
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but should match other such assignments on device).
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Has all of the equivalent parameters as per voltageY. Units
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after application of scale and offset are m/s^2.
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What: /sys/bus/iio/devices/iio:deviceX/in_accel_linear_x_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_accel_linear_y_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_accel_linear_z_raw
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KernelVersion: 6.1
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Contact: linux-iio@vger.kernel.org
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Description:
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As per in_accel_X_raw attributes, but minus the
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acceleration due to gravity.
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What: /sys/bus/iio/devices/iio:deviceX/in_gravity_x_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_gravity_y_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_gravity_z_raw
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KernelVersion: 4.11
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Contact: linux-iio@vger.kernel.org
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Description:
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Gravity in direction x, y or z (may be arbitrarily assigned
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but should match other such assignments on device).
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Units after application of scale and offset are m/s^2.
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What: /sys/bus/iio/devices/iio:deviceX/in_deltaangl_x_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_deltaangl_y_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_deltaangl_z_raw
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KernelVersion: 6.5
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Contact: linux-iio@vger.kernel.org
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Description:
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Angular displacement between two consecutive samples on x, y or
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z (may be arbitrarily assigned but should match other such
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assignments on device).
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In order to compute the total angular displacement during a
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desired period of time, the application should sum-up the delta
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angle samples acquired during that time.
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Units after application of scale and offset are radians.
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What: /sys/bus/iio/devices/iio:deviceX/in_deltavelocity_x_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_deltavelocity_y_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_deltavelocity_z_raw
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KernelVersion: 6.5
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Contact: linux-iio@vger.kernel.org
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Description:
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The linear velocity change between two consecutive samples on x,
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y or z (may be arbitrarily assigned but should match other such
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assignments on device).
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In order to compute the total linear velocity change during a
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desired period of time, the application should sum-up the delta
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velocity samples acquired during that time.
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Units after application of scale and offset are meters per
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second.
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What: /sys/bus/iio/devices/iio:deviceX/in_angl_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_anglY_raw
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KernelVersion: 4.17
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Contact: linux-iio@vger.kernel.org
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Description:
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Angle of rotation. Units after application of scale and offset
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are radians.
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What: /sys/bus/iio/devices/iio:deviceX/in_positionrelative_x_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_positionrelative_y_raw
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KernelVersion: 4.19
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Contact: linux-iio@vger.kernel.org
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Description:
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Relative position in direction x or y on a pad (may be
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arbitrarily assigned but should match other such assignments on
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device).
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Units after application of scale and offset are milli percents
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from the pad's size in both directions. Should be calibrated by
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the consumer.
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What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_raw
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KernelVersion: 2.6.35
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Contact: linux-iio@vger.kernel.org
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Description:
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Angular velocity about axis x, y or z (may be arbitrarily
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assigned). Has all the equivalent parameters as per voltageY.
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Units after application of scale and offset are radians per
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second.
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What: /sys/bus/iio/devices/iio:deviceX/in_incli_x_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_incli_y_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_incli_z_raw
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KernelVersion: 2.6.35
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Contact: linux-iio@vger.kernel.org
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Description:
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Inclination raw reading about axis x, y or z (may be
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arbitrarily assigned). Data converted by application of offset
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and scale to degrees.
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What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_raw
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KernelVersion: 2.6.35
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Contact: linux-iio@vger.kernel.org
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Description:
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Magnetic field along axis x, y or z (may be arbitrarily
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assigned). Data converted by application of offset
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then scale to Gauss.
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What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_peak_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_peak_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_peak_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_peak_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_temp_peak_raw
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KernelVersion: 2.6.36
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Contact: linux-iio@vger.kernel.org
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Description:
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Highest value since some reset condition. These
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attributes allow access to this and are otherwise
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the direct equivalent of the <type>Y[_name]_raw attributes.
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What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_trough_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_temp_trough_raw
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KernelVersion: 6.7
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Contact: linux-iio@vger.kernel.org
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Description:
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Lowest value since some reset condition. These
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attributes allow access to this and are otherwise
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the direct equivalent of the <type>Y[_name]_raw attributes.
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What: /sys/bus/iio/devices/iio:deviceX/in_accel_xyz_squared_peak_raw
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KernelVersion: 2.6.36
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Contact: linux-iio@vger.kernel.org
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Description:
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A computed peak value based on the sum squared magnitude of
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the underlying value in the specified directions.
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What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_raw
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What: /sys/bus/iio/devices/iio:deviceX/in_pressure_raw
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KernelVersion: 3.8
399
Contact: linux-iio@vger.kernel.org
400
Description:
401
Raw pressure measurement from channel Y. Units after
402
application of scale and offset are kilopascal.
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What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_input
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What: /sys/bus/iio/devices/iio:deviceX/in_pressure_input
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KernelVersion: 3.8
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Contact: linux-iio@vger.kernel.org
408
Description:
409
Scaled pressure measurement from channel Y, in kilopascal.
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What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_raw
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KernelVersion: 3.14
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Contact: linux-iio@vger.kernel.org
414
Description:
415
Raw humidity measurement of air. Units after application of
416
scale and offset are milli percent.
418
What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_input
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KernelVersion: 3.14
420
Contact: linux-iio@vger.kernel.org
421
Description:
422
Scaled humidity measurement in milli percent.
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What: /sys/bus/iio/devices/iio:deviceX/in_Y_mean_raw
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KernelVersion: 3.5
426
Contact: linux-iio@vger.kernel.org
427
Description:
428
Averaged raw measurement from channel Y. The number of values
429
used for averaging is device specific. The converting rules for
430
normal raw values also applies to the averaged raw values.
432
What: /sys/bus/iio/devices/iio:deviceX/in_accel_offset
433
What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_offset
434
What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_offset
435
What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_offset
436
What: /sys/bus/iio/devices/iio:deviceX/in_altvoltage_q_offset
437
What: /sys/bus/iio/devices/iio:deviceX/in_altvoltage_i_offset
438
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_offset
439
What: /sys/bus/iio/devices/iio:deviceX/in_voltage_offset
440
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_offset
441
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_offset
442
What: /sys/bus/iio/devices/iio:deviceX/in_currentY_offset
443
What: /sys/bus/iio/devices/iio:deviceX/in_current_offset
444
What: /sys/bus/iio/devices/iio:deviceX/in_tempY_offset
445
What: /sys/bus/iio/devices/iio:deviceX/in_temp_offset
446
What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_offset
447
What: /sys/bus/iio/devices/iio:deviceX/in_pressure_offset
448
What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_offset
449
What: /sys/bus/iio/devices/iio:deviceX/in_magn_offset
450
What: /sys/bus/iio/devices/iio:deviceX/in_rot_offset
451
What: /sys/bus/iio/devices/iio:deviceX/in_angl_offset
452
What: /sys/bus/iio/devices/iio:deviceX/in_capacitanceY_offset
453
KernelVersion: 2.6.35
454
Contact: linux-iio@vger.kernel.org
455
Description:
456
If known for a device, offset to be added to <type>[Y]_raw prior
457
to scaling by <type>[Y]_scale in order to obtain value in the
458
<type> units as specified in <type>[Y]_raw documentation.
459
Not present if the offset is always 0 or unknown. If Y or
460
axis <x|y|z> is not present, then the offset applies to all
461
in channels of <type>.
462
May be writable if a variable offset can be applied on the
463
device. Note that this is different to calibbias which
464
is for devices (or drivers) that apply offsets to compensate
465
for variation between different instances of the part, typically
466
adjusted by using some hardware supported calibration procedure.
467
Calibbias is applied internally, offset is applied in userspace
468
to the _raw output.
470
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_scale
471
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_scale
472
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_scale
473
What: /sys/bus/iio/devices/iio:deviceX/in_voltage_scale
474
What: /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_scale
475
What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_scale
476
What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_scale
477
What: /sys/bus/iio/devices/iio:deviceX/in_currentY_scale
478
What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_scale
479
What: /sys/bus/iio/devices/iio:deviceX/in_current_scale
480
What: /sys/bus/iio/devices/iio:deviceX/in_current_q_scale
481
What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale
482
What: /sys/bus/iio/devices/iio:deviceX/in_accel_peak_scale
483
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_scale
484
What: /sys/bus/iio/devices/iio:deviceX/in_energy_scale
485
What: /sys/bus/iio/devices/iio:deviceX/in_distance_scale
486
What: /sys/bus/iio/devices/iio:deviceX/in_magn_scale
487
What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_scale
488
What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_scale
489
What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_scale
490
What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_scale
491
What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_scale
492
What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_scale
493
What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_scale
494
What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_scale
495
What: /sys/bus/iio/devices/iio:deviceX/in_pressure_scale
496
What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_scale
497
What: /sys/bus/iio/devices/iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_scale
498
What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_scale
499
What: /sys/bus/iio/devices/iio:deviceX/in_countY_scale
500
What: /sys/bus/iio/devices/iio:deviceX/in_deltaangl_scale
501
What: /sys/bus/iio/devices/iio:deviceX/in_deltavelocity_scale
502
What: /sys/bus/iio/devices/iio:deviceX/in_angl_scale
503
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_x_scale
504
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_y_scale
505
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_z_scale
506
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_red_scale
507
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_green_scale
508
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_blue_scale
509
What: /sys/bus/iio/devices/iio:deviceX/in_concentration_co2_scale
510
KernelVersion: 2.6.35
511
Contact: linux-iio@vger.kernel.org
512
Description:
513
If known for a device, scale to be applied to <type>Y[_name]_raw
514
post addition of <type>[Y][_name]_offset in order to obtain the
515
measured value in <type> units as specified in
516
<type>[Y][_name]_raw documentation. If shared across all in
517
channels then Y and <x|y|z> are not present and the value is
518
called <type>[Y][_name]_scale. The peak modifier means this
519
value is applied to <type>Y[_name]_peak_raw values.
521
What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibbias
522
What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibbias
523
What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibbias
524
What: /sys/bus/iio/devices/iio:deviceX/in_altvoltageY_i_calibbias
525
What: /sys/bus/iio/devices/iio:deviceX/in_altvoltageY_q_calibbias
526
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibbias
527
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibbias
528
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibbias
529
What: /sys/bus/iio/devices/iio:deviceX/in_capacitance_calibbias
530
What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_calibbias
531
What: /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibbias
532
What: /sys/bus/iio/devices/iio:deviceX/in_intensityY_calibbias
533
What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_calibbias
534
What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_calibbias
535
What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_calibbias
536
What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibbias
537
What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibbias
538
What: /sys/bus/iio/devices/iio:deviceX/in_proximity_calibbias
539
What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibbias
540
What: /sys/bus/iio/devices/iio:deviceX/in_resistance_calibbias
541
What: /sys/bus/iio/devices/iio:deviceX/in_temp_calibbias
542
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibbias
543
What: /sys/bus/iio/devices/iio:deviceX/out_currentY_calibbias
544
What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_calibbias
545
KernelVersion: 2.6.35
546
Contact: linux-iio@vger.kernel.org
547
Description:
548
Hardware applied calibration offset (assumed to fix production
549
inaccuracies).
550
icm42600: For this device values are real physical offsets
551
expressed in SI units (m/s^2 for accelerometers and rad/s
552
for gyroscope)/
554
What: /sys/bus/iio/devices/iio:deviceX/in_accel_calibbias_available
555
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_calibbias_available
556
What: /sys/bus/iio/devices/iio:deviceX/in_temp_calibbias_available
557
What: /sys/bus/iio/devices/iio:deviceX/in_proximity_calibbias_available
558
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibbias_available
559
What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_calibbias_available
560
KernelVersion: 5.8
561
Contact: linux-iio@vger.kernel.org
562
Description:
563
Available values of calibbias. Maybe expressed as either of:
565
- a small discrete set of values like "0 2 4 6 8"
566
- a range specified as "[min step max]"
568
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_convdelay
569
KernelVersion: 6.17
570
Contact: linux-iio@vger.kernel.org
571
Description:
572
Delay of start of conversion from common reference point shared
573
by all channels. Can be writable when used to compensate for
574
delay variation introduced by external filters feeding a
575
simultaneous sampling ADC.
577
E.g., for the ad7606 ADC series, this value is intended as a
578
configurable time delay in seconds, to correct delay introduced
579
by an optional external filtering circuit.
581
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_convdelay_available
582
KernelVersion: 6.16
583
Contact: linux-iio@vger.kernel.org
584
Description:
585
Available values of convdelay. Maybe expressed as:
587
- a range specified as "[min step max]"
589
If shared across all channels, <type>_convdelay_available
590
is used.
592
What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibscale
593
What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibscale
594
What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibscale
595
What: /sys/bus/iio/devices/iio:deviceX/in_altvoltage_calibscale
596
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibscale
597
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibscale
598
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibscale
599
What: /sys/bus/iio/devices/iio:deviceX/in_capacitance_calibscale
600
What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_calibscale
601
What: /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibscale
602
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_both_calibscale
603
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_calibscale
604
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_ir_calibscale
605
What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_calibscale
606
What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_calibscale
607
What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_calibscale
608
What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibscale
609
What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibscale
610
What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibscale
611
What: /sys/bus/iio/devices/iio:deviceX/in_voltage_calibscale
612
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale
613
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_calibscale
614
What: /sys/bus/iio/devices/iio:deviceX/out_currentY_calibscale
615
What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_calibscale
616
KernelVersion: 2.6.35
617
Contact: linux-iio@vger.kernel.org
618
Description:
619
Hardware applied calibration scale factor (assumed to fix
620
production inaccuracies). If shared across all channels,
621
<type>_calibscale is used.
623
What: /sys/bus/iio/devices/iio:deviceX/in_illuminanceY_calibscale_available
624
What: /sys/bus/iio/devices/iio:deviceX/in_intensityY_calibscale_available
625
What: /sys/bus/iio/devices/iio:deviceX/in_proximityY_calibscale_available
626
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale_available
627
KernelVersion: 4.8
628
Contact: linux-iio@vger.kernel.org
629
Description:
630
Available values of calibscale. Maybe expressed as either of:
632
- a small discrete set of values like "1 8 16"
633
- a range specified as "[min step max]"
635
If shared across all channels, <type>_calibscale_available is used.
637
What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender
638
What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender
639
What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender
640
What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender
641
KernelVersion: 4.0
642
Contact: linux-iio@vger.kernel.org
643
Description:
644
Gender of the user (e.g.: male, female) used by some pedometers
645
to compute the stride length, distance, speed and activity
646
type.
648
What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender_available
649
What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender_available
650
What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender_available
651
What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender_available
652
KernelVersion: 4.0
653
Contact: linux-iio@vger.kernel.org
654
Description:
655
Lists all available gender values (e.g.: male, female).
657
What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibheight
658
What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibheight
659
What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibheight
660
What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibheight
661
KernelVersion: 3.19
662
Contact: linux-iio@vger.kernel.org
663
Description:
664
Height of the user (in meters) used by some pedometers
665
to compute the stride length, distance, speed and activity
666
type.
668
What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibweight
669
KernelVersion: 4.0
670
Contact: linux-iio@vger.kernel.org
671
Description:
672
Weight of the user (in kg). It is needed by some pedometers
673
to compute the calories burnt by the user.
675
What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale_available
676
What: /sys/.../iio:deviceX/in_anglvel_scale_available
677
What: /sys/.../iio:deviceX/in_magn_scale_available
678
What: /sys/.../iio:deviceX/in_illuminance_scale_available
679
What: /sys/.../iio:deviceX/in_intensity_scale_available
680
What: /sys/.../iio:deviceX/in_proximity_scale_available
681
What: /sys/.../iio:deviceX/in_voltageY_scale_available
682
What: /sys/.../iio:deviceX/in_voltage-voltage_scale_available
683
What: /sys/.../iio:deviceX/out_voltageY_scale_available
684
What: /sys/.../iio:deviceX/out_altvoltageY_scale_available
685
What: /sys/.../iio:deviceX/in_capacitance_scale_available
686
What: /sys/.../iio:deviceX/in_pressure_scale_available
687
What: /sys/.../iio:deviceX/in_pressureY_scale_available
688
KernelVersion: 2.6.35
689
Contact: linux-iio@vger.kernel.org
690
Description:
691
If a discrete set of scale values is available, they
692
are listed in this attribute. Unlike illumination,
693
multiplying intensity by intensity_scale does not
694
yield value with any standardized unit.
696
What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_hardwaregain
697
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_hardwaregain
698
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_red_hardwaregain
699
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_green_hardwaregain
700
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_blue_hardwaregain
701
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_clear_hardwaregain
702
What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_hardwaregain
703
KernelVersion: 2.6.35
704
Contact: linux-iio@vger.kernel.org
705
Description:
706
Hardware applied gain factor. If shared across all channels,
707
<type>_hardwaregain is used.
709
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_hardwaregain_available
710
KernelVersion: 5.10
711
Contact: linux-iio@vger.kernel.org
712
Description:
713
Lists all available hardware applied gain factors. Shared across all
714
channels.
716
What: /sys/.../in_accel_filter_low_pass_3db_frequency
717
What: /sys/.../in_magn_filter_low_pass_3db_frequency
718
What: /sys/.../in_anglvel_filter_low_pass_3db_frequency
719
KernelVersion: 3.2
720
Contact: linux-iio@vger.kernel.org
721
Description:
722
If a known or controllable low pass filter is applied
723
to the underlying data channel, then this parameter
724
gives the 3dB frequency of the filter in Hz.
726
What: /sys/.../in_accel_filter_high_pass_3db_frequency
727
What: /sys/.../in_anglvel_filter_high_pass_3db_frequency
728
What: /sys/.../in_magn_filter_high_pass_3db_frequency
729
KernelVersion: 4.2
730
Contact: linux-iio@vger.kernel.org
731
Description:
732
If a known or controllable high pass filter is applied
733
to the underlying data channel, then this parameter
734
gives the 3dB frequency of the filter in Hz.
736
What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_raw
737
What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_raw
738
KernelVersion: 2.6.37
739
Contact: linux-iio@vger.kernel.org
740
Description:
741
Raw (unscaled, no bias etc.) output voltage for
742
channel Y. The number must always be specified and
743
unique if the output corresponds to a single channel.
744
While DAC like devices typically use out_voltage,
745
a continuous frequency generating device, such as
746
a DDS or PLL should use out_altvoltage.
748
What: /sys/bus/iio/devices/iio:deviceX/out_voltageY&Z_raw
749
What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY&Z_raw
750
KernelVersion: 2.6.37
751
Contact: linux-iio@vger.kernel.org
752
Description:
753
Raw (unscaled, no bias etc.) output voltage for an aggregate of
754
channel Y, channel Z, etc. This interface is available in cases
755
where a single output sets the value for multiple channels
756
simultaneously.
758
What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown_mode
759
What: /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown_mode
760
What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown_mode
761
What: /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown_mode
762
KernelVersion: 2.6.38
763
Contact: linux-iio@vger.kernel.org
764
Description:
765
Specifies the output powerdown mode.
766
DAC output stage is disconnected from the amplifier and
767
1kohm_to_gnd: connected to ground via an 1kOhm resistor,
768
2.5kohm_to_gnd: connected to ground via a 2.5kOhm resistor,
769
6kohm_to_gnd: connected to ground via a 6kOhm resistor,
770
7.7kohm_to_gnd: connected to ground via a 7.7kOhm resistor,
771
20kohm_to_gnd: connected to ground via a 20kOhm resistor,
772
32kohm_to_gnd: connected to ground via a 32kOhm resistor,
773
42kohm_to_gnd: connected to ground via a 42kOhm resistor,
774
90kohm_to_gnd: connected to ground via a 90kOhm resistor,
775
100kohm_to_gnd: connected to ground via an 100kOhm resistor,
776
125kohm_to_gnd: connected to ground via an 125kOhm resistor,
777
500kohm_to_gnd: connected to ground via a 500kOhm resistor,
778
640kohm_to_gnd: connected to ground via a 640kOhm resistor,
779
three_state: left floating.
780
For a list of available output power down options read
781
outX_powerdown_mode_available. If Y is not present the
782
mode is shared across all outputs.
784
What: /sys/.../iio:deviceX/out_voltageY_powerdown_mode_available
785
What: /sys/.../iio:deviceX/out_voltage_powerdown_mode_available
786
What: /sys/.../iio:deviceX/out_altvoltageY_powerdown_mode_available
787
What: /sys/.../iio:deviceX/out_altvoltage_powerdown_mode_available
788
KernelVersion: 2.6.38
789
Contact: linux-iio@vger.kernel.org
790
Description:
791
Lists all available output power down modes.
792
If Y is not present the mode is shared across all outputs.
794
What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown
795
What: /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown
796
What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown
797
What: /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown
798
KernelVersion: 2.6.38
799
Contact: linux-iio@vger.kernel.org
800
Description:
801
Writing 1 causes output Y to enter the power down mode specified
802
by the corresponding outY_powerdown_mode. DAC output stage is
803
disconnected from the amplifier. Clearing returns to normal
804
operation. Y may be suppressed if all outputs are controlled
805
together.
807
What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency
808
KernelVersion: 3.4.0
809
Contact: linux-iio@vger.kernel.org
810
Description:
811
Output frequency for channel Y in Hz. The number must always be
812
specified and unique if the output corresponds to a single
813
channel.
814
Some drivers have additional constraints:
815
ADF4371 has an integrated VCO with fundamendal output
816
frequency ranging from 4000000000 Hz 8000000000 Hz.
818
out_altvoltage0_frequency:
819
A divide by 1, 2, 4, 8, 16, 32 or circuit generates
820
frequencies from 62500000 Hz to 8000000000 Hz.
821
out_altvoltage1_frequency:
822
This channel duplicates the channel 0 frequency
823
out_altvoltage2_frequency:
824
A frequency doubler generates frequencies from
825
8000000000 Hz to 16000000000 Hz.
826
out_altvoltage3_frequency:
827
A frequency quadrupler generates frequencies from
828
16000000000 Hz to 32000000000 Hz.
830
Note: writes to one of the channels will affect the frequency of
831
all the other channels, since it involves changing the VCO
832
fundamental output frequency.
834
What: /sys/bus/iio/devices/iio:deviceX/in_altvoltageY_i_phase
835
What: /sys/bus/iio/devices/iio:deviceX/in_altvoltageY_q_phase
836
What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_phase
837
What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_i_phase
838
What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_q_phase
839
KernelVersion: 3.4.0
840
Contact: linux-iio@vger.kernel.org
841
Description:
842
Phase in radians of one frequency/clock output Y
843
(out_altvoltageY) relative to another frequency/clock output
844
(out_altvoltageZ) of the device X. The number must always be
845
specified and unique if the output corresponds to a single
846
channel.
848
What: /sys/bus/iio/devices/iio:deviceX/out_currentY_raw
849
Date: May 2012
850
KernelVersion: 3.5
851
Contact: Johan Hovold <jhovold@gmail.com>
852
Description:
853
Set/get output current for channel Y. Units after application
854
of scale and offset are milliamps.
855
For some devices current channels are used to specify
856
current supplied to elements used in taking a measurement
857
of a different type. E.g. LED currents.
859
What: /sys/bus/iio/devices/iio:deviceX/events
860
KernelVersion: 2.6.35
861
Contact: linux-iio@vger.kernel.org
862
Description:
863
Configuration of which hardware generated events are passed up
864
to user-space.
866
What: /sys/.../iio:deviceX/events/in_accel_x_thresh_rising_en
867
What: /sys/.../iio:deviceX/events/in_accel_x_thresh_falling_en
868
What: /sys/.../iio:deviceX/events/in_accel_y_thresh_rising_en
869
What: /sys/.../iio:deviceX/events/in_accel_y_thresh_falling_en
870
What: /sys/.../iio:deviceX/events/in_accel_z_thresh_rising_en
871
What: /sys/.../iio:deviceX/events/in_accel_z_thresh_falling_en
872
What: /sys/.../iio:deviceX/events/in_anglvel_x_thresh_rising_en
873
What: /sys/.../iio:deviceX/events/in_anglvel_x_thresh_falling_en
874
What: /sys/.../iio:deviceX/events/in_anglvel_y_thresh_rising_en
875
What: /sys/.../iio:deviceX/events/in_anglvel_y_thresh_falling_en
876
What: /sys/.../iio:deviceX/events/in_anglvel_z_thresh_rising_en
877
What: /sys/.../iio:deviceX/events/in_anglvel_z_thresh_falling_en
878
What: /sys/.../iio:deviceX/events/in_magn_x_thresh_rising_en
879
What: /sys/.../iio:deviceX/events/in_magn_x_thresh_falling_en
880
What: /sys/.../iio:deviceX/events/in_magn_y_thresh_rising_en
881
What: /sys/.../iio:deviceX/events/in_magn_y_thresh_falling_en
882
What: /sys/.../iio:deviceX/events/in_magn_z_thresh_rising_en
883
What: /sys/.../iio:deviceX/events/in_magn_z_thresh_falling_en
884
What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_rising_en
885
What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_falling_en
886
What: /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_rising_en
887
What: /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_falling_en
888
What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_en
889
What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_en
890
What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_rising_en
891
What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_falling_en
892
What: /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_rising_en
893
What: /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_falling_en
894
What: /sys/.../iio:deviceX/events/in_voltageY_thresh_rising_en
895
What: /sys/.../iio:deviceX/events/in_voltageY_thresh_falling_en
896
What: /sys/.../iio:deviceX/events/in_voltageY_thresh_either_en
897
What: /sys/.../iio:deviceX/events/in_tempY_thresh_rising_en
898
What: /sys/.../iio:deviceX/events/in_tempY_thresh_falling_en
899
What: /sys/.../iio:deviceX/events/in_capacitanceY_thresh_rising_en
900
What: /sys/.../iio:deviceX/events/in_capacitanceY_thresh_falling_en
901
KernelVersion: 2.6.37
902
Contact: linux-iio@vger.kernel.org
903
Description:
904
Event generated when channel passes a threshold in the specified
905
(_rising|_falling) direction. If the direction is not specified,
906
then either the device will report an event which ever direction
907
a single threshold value is passed in (e.g.
908
<type>[Y][_name]_<raw|input>_thresh_value) or
909
<type>[Y][_name]_<raw|input>_thresh_rising_value and
910
<type>[Y][_name]_<raw|input>_thresh_falling_value may take
911
different values, but the device can only enable both thresholds
912
or neither.
914
Note the driver will assume the last p events requested are
915
to be enabled where p is how many it supports (which may vary
916
depending on the exact set requested. So if you want to be
917
sure you have set what you think you have, check the contents of
918
these attributes after everything is configured. Drivers may
919
have to buffer any parameters so that they are consistent when
920
a given event type is enabled at a future point (and not those for
921
whatever event was previously enabled).
923
What: /sys/.../iio:deviceX/events/in_accel_x_roc_rising_en
924
What: /sys/.../iio:deviceX/events/in_accel_x_roc_falling_en
925
What: /sys/.../iio:deviceX/events/in_accel_y_roc_rising_en
926
What: /sys/.../iio:deviceX/events/in_accel_y_roc_falling_en
927
What: /sys/.../iio:deviceX/events/in_accel_z_roc_rising_en
928
What: /sys/.../iio:deviceX/events/in_accel_z_roc_falling_en
929
What: /sys/.../iio:deviceX/events/in_anglvel_x_roc_rising_en
930
What: /sys/.../iio:deviceX/events/in_anglvel_x_roc_falling_en
931
What: /sys/.../iio:deviceX/events/in_anglvel_y_roc_rising_en
932
What: /sys/.../iio:deviceX/events/in_anglvel_y_roc_falling_en
933
What: /sys/.../iio:deviceX/events/in_anglvel_z_roc_rising_en
934
What: /sys/.../iio:deviceX/events/in_anglvel_z_roc_falling_en
935
What: /sys/.../iio:deviceX/events/in_magn_x_roc_rising_en
936
What: /sys/.../iio:deviceX/events/in_magn_x_roc_falling_en
937
What: /sys/.../iio:deviceX/events/in_magn_y_roc_rising_en
938
What: /sys/.../iio:deviceX/events/in_magn_y_roc_falling_en
939
What: /sys/.../iio:deviceX/events/in_magn_z_roc_rising_en
940
What: /sys/.../iio:deviceX/events/in_magn_z_roc_falling_en
941
What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_rising_en
942
What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_falling_en
943
What: /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_rising_en
944
What: /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_falling_en
945
What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_rising_en
946
What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_falling_en
947
What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_rising_en
948
What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_falling_en
949
What: /sys/.../iio:deviceX/events/in_voltageY_supply_roc_rising_en
950
What: /sys/.../iio:deviceX/events/in_voltageY_supply_roc_falling_en
951
What: /sys/.../iio:deviceX/events/in_voltageY_roc_rising_en
952
What: /sys/.../iio:deviceX/events/in_voltageY_roc_falling_en
953
What: /sys/.../iio:deviceX/events/in_tempY_roc_rising_en
954
What: /sys/.../iio:deviceX/events/in_tempY_roc_falling_en
955
KernelVersion: 2.6.37
956
Contact: linux-iio@vger.kernel.org
957
Description:
958
Event generated when channel passes a threshold on the rate of
959
change (1st differential) in the specified (_rising|_falling)
960
direction. If the direction is not specified, then either the
961
device will report an event which ever direction a single
962
threshold value is passed in (e.g.
963
<type>[Y][_name]_<raw|input>_roc_value) or
964
<type>[Y][_name]_<raw|input>_roc_rising_value and
965
<type>[Y][_name]_<raw|input>_roc_falling_value may take
966
different values, but the device can only enable both rate of
967
change thresholds or neither.
969
Note the driver will assume the last p events requested are
970
to be enabled where p is however many it supports (which may
971
vary depending on the exact set requested. So if you want to be
972
sure you have set what you think you have, check the contents of
973
these attributes after everything is configured. Drivers may
974
have to buffer any parameters so that they are consistent when
975
a given event type is enabled a future point (and not those for
976
whatever event was previously enabled).
978
What: /sys/.../events/in_capacitanceY_adaptive_thresh_rising_en
979
What: /sys/.../events/in_capacitanceY_adaptive_thresh_falling_en
980
KernelVersion: 5.13
981
Contact: linux-iio@vger.kernel.org
982
Description:
983
Adaptive thresholds are similar to normal fixed thresholds
984
but the value is expressed as an offset from a value which
985
provides a low frequency approximation of the channel itself.
986
Thus these detect if a rapid change occurs in the specified
987
direction which crosses tracking value + offset.
988
Tracking value calculation is devices specific.
990
What: /sys/.../in_capacitanceY_adaptive_thresh_rising_timeout
991
What: /sys/.../in_capacitanceY_adaptive_thresh_falling_timeout
992
KernelVersion: 5.11
993
Contact: linux-iio@vger.kernel.org
994
Description:
995
When adaptive thresholds are used, the tracking signal
996
may adjust too slowly to step changes in the raw signal.
997
Thus these specify the time in seconds for which the
998
difference between the slow tracking signal and the raw
999
signal is allowed to remain out-of-range before a reset
1000
event occurs in which the tracking signal is made equal
1001
to the raw signal, allowing slow tracking to resume and the
1002
adaptive threshold event detection to function as expected.
1004
What: /sys/.../events/in_accel_thresh_rising_value
1005
What: /sys/.../events/in_accel_thresh_falling_value
1006
What: /sys/.../events/in_accel_x_raw_thresh_rising_value
1007
What: /sys/.../events/in_accel_x_raw_thresh_falling_value
1008
What: /sys/.../events/in_accel_y_raw_thresh_rising_value
1009
What: /sys/.../events/in_accel_y_raw_thresh_falling_value
1010
What: /sys/.../events/in_accel_z_raw_thresh_rising_value
1011
What: /sys/.../events/in_accel_z_raw_thresh_falling_value
1012
What: /sys/.../events/in_anglvel_x_raw_thresh_rising_value
1013
What: /sys/.../events/in_anglvel_x_raw_thresh_falling_value
1014
What: /sys/.../events/in_anglvel_y_raw_thresh_rising_value
1015
What: /sys/.../events/in_anglvel_y_raw_thresh_falling_value
1016
What: /sys/.../events/in_anglvel_z_raw_thresh_rising_value
1017
What: /sys/.../events/in_anglvel_z_raw_thresh_falling_value
1018
What: /sys/.../events/in_magn_x_raw_thresh_rising_value
1019
What: /sys/.../events/in_magn_x_raw_thresh_falling_value
1020
What: /sys/.../events/in_magn_y_raw_thresh_rising_value
1021
What: /sys/.../events/in_magn_y_raw_thresh_falling_value
1022
What: /sys/.../events/in_magn_z_raw_thresh_rising_value
1023
What: /sys/.../events/in_magn_z_raw_thresh_falling_value
1024
What: /sys/.../events/in_rot_from_north_magnetic_raw_thresh_rising_value
1025
What: /sys/.../events/in_rot_from_north_magnetic_raw_thresh_falling_value
1026
What: /sys/.../events/in_rot_from_north_true_raw_thresh_rising_value
1027
What: /sys/.../events/in_rot_from_north_true_raw_thresh_falling_value
1028
What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_rising_value
1029
What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_falling_value
1030
What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_rising_value
1031
What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_falling_value
1032
What: /sys/.../events/in_voltageY_supply_raw_thresh_rising_value
1033
What: /sys/.../events/in_voltageY_supply_raw_thresh_falling_value
1034
What: /sys/.../events/in_voltageY_raw_thresh_rising_value
1035
What: /sys/.../events/in_voltageY_raw_thresh_falling_value
1036
What: /sys/.../events/in_tempY_raw_thresh_rising_value
1037
What: /sys/.../events/in_tempY_raw_thresh_falling_value
1038
What: /sys/.../events/in_illuminance0_thresh_falling_value
1039
What: /sys/.../events/in_illuminance0_thresh_rising_value
1040
What: /sys/.../events/in_proximity0_thresh_falling_value
1041
What: /sys/.../events/in_proximity0_thresh_rising_value
1042
What: /sys/.../events/in_illuminance_thresh_rising_value
1043
What: /sys/.../events/in_illuminance_thresh_falling_value
1044
What: /sys/.../events/in_capacitanceY_thresh_rising_value
1045
What: /sys/.../events/in_capacitanceY_thresh_falling_value
1046
What: /sys/.../events/in_capacitanceY_thresh_adaptive_rising_value
1047
What: /sys/.../events/in_capacitanceY_thresh_falling_rising_value
1048
KernelVersion: 2.6.37
1049
Contact: linux-iio@vger.kernel.org
1050
Description:
1051
Specifies the value of threshold that the device is comparing
1052
against for the events enabled by
1053
<type>Y[_name]_thresh[_rising|falling]_en.
1055
If separate attributes exist for the two directions, but
1056
direction is not specified for this attribute, then a single
1057
threshold value applies to both directions.
1059
The raw or input element of the name indicates whether the
1060
value is in raw device units or in processed units (as _raw
1061
and _input do on sysfs direct channel read attributes).
1063
What: /sys/.../events/in_accel_scale
1064
What: /sys/.../events/in_accel_peak_scale
1065
What: /sys/.../events/in_anglvel_scale
1066
What: /sys/.../events/in_magn_scale
1067
What: /sys/.../events/in_rot_from_north_magnetic_scale
1068
What: /sys/.../events/in_rot_from_north_true_scale
1069
What: /sys/.../events/in_voltage_scale
1070
What: /sys/.../events/in_voltage_supply_scale
1071
What: /sys/.../events/in_temp_scale
1072
What: /sys/.../events/in_illuminance_scale
1073
What: /sys/.../events/in_proximity_scale
1074
KernelVersion: 3.21
1075
Contact: linux-iio@vger.kernel.org
1076
Description:
1077
Specifies the conversion factor from the standard units
1078
to device specific units used to set the event trigger
1079
threshold.
1081
What: /sys/.../events/in_accel_x_thresh_rising_hysteresis
1082
What: /sys/.../events/in_accel_x_thresh_falling_hysteresis
1083
What: /sys/.../events/in_accel_x_thresh_either_hysteresis
1084
What: /sys/.../events/in_accel_y_thresh_rising_hysteresis
1085
What: /sys/.../events/in_accel_y_thresh_falling_hysteresis
1086
What: /sys/.../events/in_accel_y_thresh_either_hysteresis
1087
What: /sys/.../events/in_accel_z_thresh_rising_hysteresis
1088
What: /sys/.../events/in_accel_z_thresh_falling_hysteresis
1089
What: /sys/.../events/in_accel_z_thresh_either_hysteresis
1090
What: /sys/.../events/in_anglvel_x_thresh_rising_hysteresis
1091
What: /sys/.../events/in_anglvel_x_thresh_falling_hysteresis
1092
What: /sys/.../events/in_anglvel_x_thresh_either_hysteresis
1093
What: /sys/.../events/in_anglvel_y_thresh_rising_hysteresis
1094
What: /sys/.../events/in_anglvel_y_thresh_falling_hysteresis
1095
What: /sys/.../events/in_anglvel_y_thresh_either_hysteresis
1096
What: /sys/.../events/in_anglvel_z_thresh_rising_hysteresis
1097
What: /sys/.../events/in_anglvel_z_thresh_falling_hysteresis
1098
What: /sys/.../events/in_anglvel_z_thresh_either_hysteresis
1099
What: /sys/.../events/in_magn_x_thresh_rising_hysteresis
1100
What: /sys/.../events/in_magn_x_thresh_falling_hysteresis
1101
What: /sys/.../events/in_magn_x_thresh_either_hysteresis
1102
What: /sys/.../events/in_magn_y_thresh_rising_hysteresis
1103
What: /sys/.../events/in_magn_y_thresh_falling_hysteresis
1104
What: /sys/.../events/in_magn_y_thresh_either_hysteresis
1105
What: /sys/.../events/in_magn_z_thresh_rising_hysteresis
1106
What: /sys/.../events/in_magn_z_thresh_falling_hysteresis
1107
What: /sys/.../events/in_magn_z_thresh_either_hysteresis
1108
What: /sys/.../events/in_rot_from_north_magnetic_thresh_rising_hysteresis
1109
What: /sys/.../events/in_rot_from_north_magnetic_thresh_falling_hysteresis
1110
What: /sys/.../events/in_rot_from_north_magnetic_thresh_either_hysteresis
1111
What: /sys/.../events/in_rot_from_north_true_thresh_rising_hysteresis
1112
What: /sys/.../events/in_rot_from_north_true_thresh_falling_hysteresis
1113
What: /sys/.../events/in_rot_from_north_true_thresh_either_hysteresis
1114
What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_hysteresis
1115
What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_hysteresis
1116
What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_either_hysteresis
1117
What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_hysteresis
1118
What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_hysteresis
1119
What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_either_hysteresis
1120
What: /sys/.../events/in_voltageY_thresh_rising_hysteresis
1121
What: /sys/.../events/in_voltageY_thresh_falling_hysteresis
1122
What: /sys/.../events/in_voltageY_thresh_either_hysteresis
1123
What: /sys/.../events/in_tempY_thresh_rising_hysteresis
1124
What: /sys/.../events/in_tempY_thresh_falling_hysteresis
1125
What: /sys/.../events/in_tempY_thresh_either_hysteresis
1126
What: /sys/.../events/in_illuminance0_thresh_falling_hysteresis
1127
What: /sys/.../events/in_illuminance0_thresh_rising_hysteresis
1128
What: /sys/.../events/in_illuminance0_thresh_either_hysteresis
1129
What: /sys/.../events/in_proximity0_thresh_falling_hysteresis
1130
What: /sys/.../events/in_proximity0_thresh_rising_hysteresis
1131
What: /sys/.../events/in_proximity0_thresh_either_hysteresis
1132
KernelVersion: 3.13
1133
Contact: linux-iio@vger.kernel.org
1134
Description:
1135
Specifies the hysteresis of threshold that the device is comparing
1136
against for the events enabled by
1137
<type>Y[_name]_thresh[_(rising|falling)]_hysteresis.
1138
If separate attributes exist for the two directions, but
1139
direction is not specified for this attribute, then a single
1140
hysteresis value applies to both directions.
1142
For falling events the hysteresis is added to the _value attribute for
1143
this event to get the upper threshold for when the event goes back to
1144
normal, for rising events the hysteresis is subtracted from the _value
1145
attribute. E.g. if in_voltage0_raw_thresh_rising_value is set to 1200
1146
and in_voltage0_raw_thresh_rising_hysteresis is set to 50. The event
1147
will get activated once in_voltage0_raw goes above 1200 and will become
1148
deactivated again once the value falls below 1150.
1150
What: /sys/.../events/in_accel_x_raw_roc_rising_value
1151
What: /sys/.../events/in_accel_x_raw_roc_falling_value
1152
What: /sys/.../events/in_accel_y_raw_roc_rising_value
1153
What: /sys/.../events/in_accel_y_raw_roc_falling_value
1154
What: /sys/.../events/in_accel_z_raw_roc_rising_value
1155
What: /sys/.../events/in_accel_z_raw_roc_falling_value
1156
What: /sys/.../events/in_anglvel_x_raw_roc_rising_value
1157
What: /sys/.../events/in_anglvel_x_raw_roc_falling_value
1158
What: /sys/.../events/in_anglvel_y_raw_roc_rising_value
1159
What: /sys/.../events/in_anglvel_y_raw_roc_falling_value
1160
What: /sys/.../events/in_anglvel_z_raw_roc_rising_value
1161
What: /sys/.../events/in_anglvel_z_raw_roc_falling_value
1162
What: /sys/.../events/in_magn_x_raw_roc_rising_value
1163
What: /sys/.../events/in_magn_x_raw_roc_falling_value
1164
What: /sys/.../events/in_magn_y_raw_roc_rising_value
1165
What: /sys/.../events/in_magn_y_raw_roc_falling_value
1166
What: /sys/.../events/in_magn_z_raw_roc_rising_value
1167
What: /sys/.../events/in_magn_z_raw_roc_falling_value
1168
What: /sys/.../events/in_rot_from_north_magnetic_raw_roc_rising_value
1169
What: /sys/.../events/in_rot_from_north_magnetic_raw_roc_falling_value
1170
What: /sys/.../events/in_rot_from_north_true_raw_roc_rising_value
1171
What: /sys/.../events/in_rot_from_north_true_raw_roc_falling_value
1172
What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_rising_value
1173
What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_falling_value
1174
What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_rising_value
1175
What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_falling_value
1176
What: /sys/.../events/in_voltageY_supply_raw_roc_rising_value
1177
What: /sys/.../events/in_voltageY_supply_raw_roc_falling_value
1178
What: /sys/.../events/in_voltageY_raw_roc_rising_value
1179
What: /sys/.../events/in_voltageY_raw_roc_falling_value
1180
What: /sys/.../events/in_tempY_raw_roc_rising_value
1181
What: /sys/.../events/in_tempY_raw_roc_falling_value
1182
KernelVersion: 2.6.37
1183
Contact: linux-iio@vger.kernel.org
1184
Description:
1185
Specifies the value of rate of change threshold that the
1186
device is comparing against for the events enabled by
1187
<type>[Y][_name]_roc[_rising|falling]_en.
1189
If separate attributes exist for the two directions,
1190
but direction is not specified for this attribute,
1191
then a single threshold value applies to both directions.
1192
The raw or input element of the name indicates whether the
1193
value is in raw device units or in processed units (as _raw
1194
and _input do on sysfs direct channel read attributes).
1196
What: /sys/.../events/in_accel_x_thresh_rising_period
1197
What: /sys/.../events/in_accel_x_thresh_falling_period
1198
What: /sys/.../events/in_accel_x_roc_rising_period
1199
What: /sys/.../events/in_accel_x_roc_falling_period
1200
What: /sys/.../events/in_accel_y_thresh_rising_period
1201
What: /sys/.../events/in_accel_y_thresh_falling_period
1202
What: /sys/.../events/in_accel_y_roc_rising_period
1203
What: /sys/.../events/in_accel_y_roc_falling_period
1204
What: /sys/.../events/in_accel_z_thresh_rising_period
1205
What: /sys/.../events/in_accel_z_thresh_falling_period
1206
What: /sys/.../events/in_accel_z_roc_rising_period
1207
What: /sys/.../events/in_accel_z_roc_falling_period
1208
What: /sys/.../events/in_anglvel_x_thresh_rising_period
1209
What: /sys/.../events/in_anglvel_x_thresh_falling_period
1210
What: /sys/.../events/in_anglvel_x_roc_rising_period
1211
What: /sys/.../events/in_anglvel_x_roc_falling_period
1212
What: /sys/.../events/in_anglvel_y_thresh_rising_period
1213
What: /sys/.../events/in_anglvel_y_thresh_falling_period
1214
What: /sys/.../events/in_anglvel_y_roc_rising_period
1215
What: /sys/.../events/in_anglvel_y_roc_falling_period
1216
What: /sys/.../events/in_anglvel_z_thresh_rising_period
1217
What: /sys/.../events/in_anglvel_z_thresh_falling_period
1218
What: /sys/.../events/in_anglvel_z_roc_rising_period
1219
What: /sys/.../events/in_anglvel_z_roc_falling_period
1220
What: /sys/.../events/in_magn_x_thresh_rising_period
1221
What: /sys/.../events/in_magn_x_thresh_falling_period
1222
What: /sys/.../events/in_magn_x_roc_rising_period
1223
What: /sys/.../events/in_magn_x_roc_falling_period
1224
What: /sys/.../events/in_magn_y_thresh_rising_period
1225
What: /sys/.../events/in_magn_y_thresh_falling_period
1226
What: /sys/.../events/in_magn_y_roc_rising_period
1227
What: /sys/.../events/in_magn_y_roc_falling_period
1228
What: /sys/.../events/in_magn_z_thresh_rising_period
1229
What: /sys/.../events/in_magn_z_thresh_falling_period
1230
What: /sys/.../events/in_magn_z_roc_rising_period
1231
What: /sys/.../events/in_magn_z_roc_falling_period
1232
What: /sys/.../events/in_rot_from_north_magnetic_thresh_rising_period
1233
What: /sys/.../events/in_rot_from_north_magnetic_thresh_falling_period
1234
What: /sys/.../events/in_rot_from_north_magnetic_roc_rising_period
1235
What: /sys/.../events/in_rot_from_north_magnetic_roc_falling_period
1236
What: /sys/.../events/in_rot_from_north_true_thresh_rising_period
1237
What: /sys/.../events/in_rot_from_north_true_thresh_falling_period
1238
What: /sys/.../events/in_rot_from_north_true_roc_rising_period
1239
What: /sys/.../events/in_rot_from_north_true_roc_falling_period
1240
What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_period
1241
What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_period
1242
What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_rising_period
1243
What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_falling_period
1244
What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_period
1245
What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_period
1246
What: /sys/.../events/in_rot_from_north_true_tilt_comp_roc_rising_period
1247
What: /sys/.../events/in_rot_from_north_true_tilt_comp_roc_falling_period
1248
What: /sys/.../events/in_voltageY_supply_thresh_rising_period
1249
What: /sys/.../events/in_voltageY_supply_thresh_falling_period
1250
What: /sys/.../events/in_voltageY_supply_roc_rising_period
1251
What: /sys/.../events/in_voltageY_supply_roc_falling_period
1252
What: /sys/.../events/in_voltageY_thresh_rising_period
1253
What: /sys/.../events/in_voltageY_thresh_falling_period
1254
What: /sys/.../events/in_voltageY_roc_rising_period
1255
What: /sys/.../events/in_voltageY_roc_falling_period
1256
What: /sys/.../events/in_tempY_thresh_rising_period
1257
What: /sys/.../events/in_tempY_thresh_falling_period
1258
What: /sys/.../events/in_tempY_roc_rising_period
1259
What: /sys/.../events/in_tempY_roc_falling_period
1260
What: /sys/.../events/in_accel_x&y&z_mag_falling_period
1261
What: /sys/.../events/in_intensity0_thresh_period
1262
What: /sys/.../events/in_proximity0_thresh_period
1263
What: /sys/.../events/in_activity_still_thresh_rising_period
1264
What: /sys/.../events/in_activity_still_thresh_falling_period
1265
What: /sys/.../events/in_activity_walking_thresh_rising_period
1266
What: /sys/.../events/in_activity_walking_thresh_falling_period
1267
What: /sys/.../events/in_activity_jogging_thresh_rising_period
1268
What: /sys/.../events/in_activity_jogging_thresh_falling_period
1269
What: /sys/.../events/in_activity_running_thresh_rising_period
1270
What: /sys/.../events/in_activity_running_thresh_falling_period
1271
What: /sys/.../events/in_illuminance_thresh_either_period
1272
KernelVersion: 2.6.37
1273
Contact: linux-iio@vger.kernel.org
1274
Description:
1275
Period of time (in seconds) for which the condition must be
1276
met before an event is generated. If direction is not
1277
specified then this period applies to both directions.
1279
What: /sys/.../events/in_accel_thresh_rising_low_pass_filter_3db
1280
What: /sys/.../events/in_anglvel_thresh_rising_low_pass_filter_3db
1281
What: /sys/.../events/in_magn_thresh_rising_low_pass_filter_3db
1282
KernelVersion: 4.2
1283
Contact: linux-iio@vger.kernel.org
1284
Description:
1285
If a low pass filter can be applied to the event generation
1286
this property gives its 3db frequency in Hz.
1287
A value of zero disables the filter.
1289
What: /sys/.../events/in_accel_thresh_rising_high_pass_filter_3db
1290
What: /sys/.../events/in_anglvel_thresh_rising_high_pass_filter_3db
1291
What: /sys/.../events/in_magn_thresh_rising_high_pass_filter_3db
1292
KernelVersion: 4.2
1293
Contact: linux-iio@vger.kernel.org
1294
Description:
1295
If a high pass filter can be applied to the event generation
1296
this property gives its 3db frequency in Hz.
1297
A value of zero disables the filter.
1299
What: /sys/.../events/in_activity_still_thresh_rising_en
1300
What: /sys/.../events/in_activity_still_thresh_falling_en
1301
What: /sys/.../events/in_activity_walking_thresh_rising_en
1302
What: /sys/.../events/in_activity_walking_thresh_falling_en
1303
What: /sys/.../events/in_activity_jogging_thresh_rising_en
1304
What: /sys/.../events/in_activity_jogging_thresh_falling_en
1305
What: /sys/.../events/in_activity_running_thresh_rising_en
1306
What: /sys/.../events/in_activity_running_thresh_falling_en
1307
KernelVersion: 3.19
1308
Contact: linux-iio@vger.kernel.org
1309
Description:
1310
Enables or disables activity events. Depending on direction
1311
an event is generated when sensor ENTERS or LEAVES a given state.
1313
What: /sys/.../events/in_activity_still_thresh_rising_value
1314
What: /sys/.../events/in_activity_still_thresh_falling_value
1315
What: /sys/.../events/in_activity_walking_thresh_rising_value
1316
What: /sys/.../events/in_activity_walking_thresh_falling_value
1317
What: /sys/.../events/in_activity_jogging_thresh_rising_value
1318
What: /sys/.../events/in_activity_jogging_thresh_falling_value
1319
What: /sys/.../events/in_activity_running_thresh_rising_value
1320
What: /sys/.../events/in_activity_running_thresh_falling_value
1321
KernelVersion: 3.19
1322
Contact: linux-iio@vger.kernel.org
1323
Description:
1324
Confidence value (in units as percentage) to be used
1325
for deciding when an event should be generated. E.g for
1326
running: If the confidence value reported by the sensor
1327
is greater than in_activity_running_thresh_rising_value
1328
then the sensor ENTERS running state. Conversely, if the
1329
confidence value reported by the sensor is lower than
1330
in_activity_running_thresh_falling_value then the sensor
1331
is LEAVING running state.
1333
What: /sys/.../iio:deviceX/events/in_accel_mag_en
1334
What: /sys/.../iio:deviceX/events/in_accel_mag_rising_en
1335
What: /sys/.../iio:deviceX/events/in_accel_mag_falling_en
1336
What: /sys/.../iio:deviceX/events/in_accel_x_mag_en
1337
What: /sys/.../iio:deviceX/events/in_accel_x_mag_rising_en
1338
What: /sys/.../iio:deviceX/events/in_accel_x_mag_falling_en
1339
What: /sys/.../iio:deviceX/events/in_accel_y_mag_en
1340
What: /sys/.../iio:deviceX/events/in_accel_y_mag_rising_en
1341
What: /sys/.../iio:deviceX/events/in_accel_y_mag_falling_en
1342
What: /sys/.../iio:deviceX/events/in_accel_z_mag_en
1343
What: /sys/.../iio:deviceX/events/in_accel_z_mag_rising_en
1344
What: /sys/.../iio:deviceX/events/in_accel_z_mag_falling_en
1345
What: /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_rising_en
1346
What: /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_falling_en
1347
KernelVersion: 2.6.37
1348
Contact: linux-iio@vger.kernel.org
1349
Description:
1350
Similar to in_accel_x_thresh[_rising|_falling]_en, but here the
1351
magnitude of the channel is compared to the threshold, not its
1352
signed value.
1354
What: /sys/.../events/in_accel_raw_mag_value
1355
What: /sys/.../events/in_accel_x_raw_mag_rising_value
1356
What: /sys/.../events/in_accel_y_raw_mag_rising_value
1357
What: /sys/.../events/in_accel_z_raw_mag_rising_value
1358
KernelVersion: 2.6.37
1359
Contact: linux-iio@vger.kernel.org
1360
Description:
1361
The value to which the magnitude of the channel is compared. If
1362
number or direction is not specified, applies to all channels of
1363
this type.
1365
What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_en
1366
What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_rising_en
1367
What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_falling_en
1368
What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_en
1369
What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_rising_en
1370
What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_falling_en
1371
KernelVersion: 5.18
1372
Contact: linux-iio@vger.kernel.org
1373
Description:
1374
Similar to in_accel_mag[_y][_rising|_falling]_en, but the event
1375
value is relative to a reference magnitude. The reference magnitude
1376
includes the graviational acceleration.
1378
What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_value
1379
What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_rising_value
1380
What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_falling_value
1381
What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_value
1382
What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_rising_value
1383
What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_falling_value
1384
KernelVersion: 5.18
1385
Contact: linux-iio@vger.kernel.org
1386
Description:
1387
The value to which the reference magnitude of the channel is
1388
compared. If the axis is not specified, it applies to all channels
1389
of this type.
1391
What: /sys/.../events/in_steps_change_en
1392
KernelVersion: 4.0
1393
Contact: linux-iio@vger.kernel.org
1394
Description:
1395
Event generated when channel passes a threshold on the absolute
1396
change in value. E.g. for steps: a step change event is
1397
generated each time the user takes N steps, where N is set using
1398
in_steps_change_value.
1400
What: /sys/.../events/in_steps_change_value
1401
KernelVersion: 4.0
1402
Contact: linux-iio@vger.kernel.org
1403
Description:
1404
Specifies the value of change threshold that the
1405
device is comparing against for the events enabled by
1406
<type>[Y][_name]_roc[_rising|falling|]_en. E.g. for steps:
1407
if set to 3, a step change event will be generated every 3
1408
steps.
1410
What: /sys/bus/iio/devices/iio:deviceX/trigger/current_trigger
1411
KernelVersion: 2.6.35
1412
Contact: linux-iio@vger.kernel.org
1413
Description:
1414
The name of the trigger source being used, as per string given
1415
in /sys/class/iio/triggerY/name.
1417
What: /sys/bus/iio/devices/iio:deviceX/bufferY/length
1418
KernelVersion: 5.11
1419
Contact: linux-iio@vger.kernel.org
1420
Description:
1421
Number of scans contained by the buffer.
1423
What: /sys/bus/iio/devices/iio:deviceX/bufferY/enable
1424
KernelVersion: 5.11
1425
Contact: linux-iio@vger.kernel.org
1426
Description:
1427
Actually start the buffer capture up. Will start trigger
1428
if first device and appropriate.
1430
Note that it might be impossible to configure other attributes,
1431
(e.g.: events, scale, sampling rate) if they impact the currently
1432
active buffer capture session.
1434
What: /sys/bus/iio/devices/iio:deviceX/bufferY
1435
KernelVersion: 5.11
1436
Contact: linux-iio@vger.kernel.org
1437
Description:
1438
Directory containing interfaces for elements that will be
1439
captured for a single triggered sample set in the buffer.
1441
Since kernel 5.11 the scan_elements attributes are merged into
1442
the bufferY directory, to be configurable per buffer.
1444
What: /sys/.../iio:deviceX/bufferY/in_accel_x_en
1445
What: /sys/.../iio:deviceX/bufferY/in_accel_y_en
1446
What: /sys/.../iio:deviceX/bufferY/in_accel_z_en
1447
What: /sys/.../iio:deviceX/bufferY/in_deltaangl_x_en
1448
What: /sys/.../iio:deviceX/bufferY/in_deltaangl_y_en
1449
What: /sys/.../iio:deviceX/bufferY/in_deltaangl_z_en
1450
What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_x_en
1451
What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_y_en
1452
What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_z_en
1453
What: /sys/.../iio:deviceX/bufferY/in_anglvel_x_en
1454
What: /sys/.../iio:deviceX/bufferY/in_anglvel_y_en
1455
What: /sys/.../iio:deviceX/bufferY/in_anglvel_z_en
1456
What: /sys/.../iio:deviceX/bufferY/in_magn_x_en
1457
What: /sys/.../iio:deviceX/bufferY/in_magn_y_en
1458
What: /sys/.../iio:deviceX/bufferY/in_magn_z_en
1459
What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_en
1460
What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_true_en
1461
What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_tilt_comp_en
1462
What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_true_tilt_comp_en
1463
What: /sys/.../iio:deviceX/bufferY/in_timestamp_en
1464
What: /sys/.../iio:deviceX/bufferY/in_voltageY_supply_en
1465
What: /sys/.../iio:deviceX/bufferY/in_voltageY_en
1466
What: /sys/.../iio:deviceX/bufferY/in_voltageY-voltageZ_en
1467
What: /sys/.../iio:deviceX/bufferY/in_incli_x_en
1468
What: /sys/.../iio:deviceX/bufferY/in_incli_y_en
1469
What: /sys/.../iio:deviceX/bufferY/in_pressureY_en
1470
What: /sys/.../iio:deviceX/bufferY/in_pressure_en
1471
What: /sys/.../iio:deviceX/bufferY/in_rot_quaternion_en
1472
What: /sys/.../iio:deviceX/bufferY/in_proximity_en
1473
KernelVersion: 5.11
1474
Contact: linux-iio@vger.kernel.org
1475
Description:
1476
Scan element control for triggered data capture.
1478
What: /sys/.../iio:deviceX/bufferY/in_accel_type
1479
What: /sys/.../iio:deviceX/bufferY/in_deltaangl_type
1480
What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_type
1481
What: /sys/.../iio:deviceX/bufferY/in_anglvel_type
1482
What: /sys/.../iio:deviceX/bufferY/in_magn_type
1483
What: /sys/.../iio:deviceX/bufferY/in_incli_type
1484
What: /sys/.../iio:deviceX/bufferY/in_voltageY_type
1485
What: /sys/.../iio:deviceX/bufferY/in_voltage_type
1486
What: /sys/.../iio:deviceX/bufferY/in_voltageY_supply_type
1487
What: /sys/.../iio:deviceX/bufferY/in_timestamp_type
1488
What: /sys/.../iio:deviceX/bufferY/in_pressureY_type
1489
What: /sys/.../iio:deviceX/bufferY/in_pressure_type
1490
What: /sys/.../iio:deviceX/bufferY/in_rot_quaternion_type
1491
What: /sys/.../iio:deviceX/bufferY/in_proximity_type
1492
KernelVersion: 5.11
1493
Contact: linux-iio@vger.kernel.org
1494
Description:
1495
Description of the scan element data storage within the buffer
1496
and hence the form in which it is read from user-space.
1497
Form is [be|le]:[s|u]bits/storagebits[>>shift].
1498
be or le specifies big or little endian. s or u specifies if
1499
signed (2's complement) or unsigned. bits is the number of bits
1500
of data and storagebits is the space (after padding) that it
1501
occupies in the buffer. shift if specified, is the shift that
1502
needs to be applied prior to masking out unused bits. Some
1503
devices put their data in the middle of the transferred elements
1504
with additional information on both sides. Note that some
1505
devices will have additional information in the unused bits
1506
so to get a clean value, the bits value must be used to mask
1507
the buffer output value appropriately. The storagebits value
1508
also specifies the data alignment. So s48/64>>2 will be a
1509
signed 48 bit integer stored in a 64 bit location aligned to
1510
a 64 bit boundary. To obtain the clean value, shift right 2
1511
and apply a mask to zero the top 16 bits of the result.
1512
For other storage combinations this attribute will be extended
1513
appropriately.
1515
What: /sys/.../iio:deviceX/scan_elements/in_accel_type_available
1516
KernelVersion: 2.6.37
1517
Contact: linux-iio@vger.kernel.org
1518
Description:
1519
If the type parameter can take one of a small set of values,
1520
this attribute lists them.
1522
What: /sys/.../iio:deviceX/bufferY/in_voltageY_index
1523
What: /sys/.../iio:deviceX/bufferY/in_voltageY_supply_index
1524
What: /sys/.../iio:deviceX/bufferY/in_accel_x_index
1525
What: /sys/.../iio:deviceX/bufferY/in_accel_y_index
1526
What: /sys/.../iio:deviceX/bufferY/in_accel_z_index
1527
What: /sys/.../iio:deviceX/bufferY/in_deltaangl_x_index
1528
What: /sys/.../iio:deviceX/bufferY/in_deltaangl_y_index
1529
What: /sys/.../iio:deviceX/bufferY/in_deltaangl_z_index
1530
What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_x_index
1531
What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_y_index
1532
What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_z_index
1533
What: /sys/.../iio:deviceX/bufferY/in_anglvel_x_index
1534
What: /sys/.../iio:deviceX/bufferY/in_anglvel_y_index
1535
What: /sys/.../iio:deviceX/bufferY/in_anglvel_z_index
1536
What: /sys/.../iio:deviceX/bufferY/in_magn_x_index
1537
What: /sys/.../iio:deviceX/bufferY/in_magn_y_index
1538
What: /sys/.../iio:deviceX/bufferY/in_magn_z_index
1539
What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_index
1540
What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_true_index
1541
What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_tilt_comp_index
1542
What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_true_tilt_comp_index
1543
What: /sys/.../iio:deviceX/bufferY/in_incli_x_index
1544
What: /sys/.../iio:deviceX/bufferY/in_incli_y_index
1545
What: /sys/.../iio:deviceX/bufferY/in_timestamp_index
1546
What: /sys/.../iio:deviceX/bufferY/in_pressureY_index
1547
What: /sys/.../iio:deviceX/bufferY/in_pressure_index
1548
What: /sys/.../iio:deviceX/bufferY/in_rot_quaternion_index
1549
What: /sys/.../iio:deviceX/bufferY/in_proximity_index
1550
KernelVersion: 5.11
1551
Contact: linux-iio@vger.kernel.org
1552
Description:
1553
A single positive integer specifying the position of this
1554
scan element in the buffer. Note these are not dependent on
1555
what is enabled and may not be contiguous. Thus for user-space
1556
to establish the full layout these must be used in conjunction
1557
with all _en attributes to establish which channels are present,
1558
and the relevant _type attributes to establish the data storage
1559
format.
1561
What: /sys/.../iio:deviceX/in_activity_still_input
1562
What: /sys/.../iio:deviceX/in_activity_walking_input
1563
What: /sys/.../iio:deviceX/in_activity_jogging_input
1564
What: /sys/.../iio:deviceX/in_activity_running_input
1565
KernelVersion: 3.19
1566
Contact: linux-iio@vger.kernel.org
1567
Description:
1568
This attribute is used to read the confidence for an activity
1569
expressed in units as percentage.
1571
What: /sys/.../iio:deviceX/in_anglvel_z_quadrature_correction_raw
1572
KernelVersion: 2.6.38
1573
Contact: linux-iio@vger.kernel.org
1574
Description:
1575
This attribute is used to read the amount of quadrature error
1576
present in the device at a given time.
1578
What: /sys/.../iio:deviceX/in_accelY_power_mode
1579
KernelVersion: 3.11
1580
Contact: linux-iio@vger.kernel.org
1581
Description:
1582
Specifies the chip power mode.
1583
low_noise: reduce noise level from ADC,
1584
low_power: enable low current consumption.
1585
For a list of available output power modes read
1586
in_accel_power_mode_available.
1588
What: /sys/.../iio:deviceX/in_energy_input
1589
What: /sys/.../iio:deviceX/in_energy_raw
1590
What: /sys/.../iio:deviceX/in_energyY_active_raw
1591
What: /sys/.../iio:deviceX/in_energyY_reactive_raw
1592
What: /sys/.../iio:deviceX/in_energyY_apparent_raw
1593
KernelVersion: 4.0
1594
Contact: linux-iio@vger.kernel.org
1595
Description:
1596
This attribute is used to read the energy value reported by the
1597
device (e.g.: human activity sensors report energy burnt by the
1598
user). Units after application of scale are Joules.
1600
What: /sys/.../iio:deviceX/in_distance_input
1601
What: /sys/.../iio:deviceX/in_distance_raw
1602
KernelVersion: 4.0
1603
Contact: linux-iio@vger.kernel.org
1604
Description:
1605
This attribute is used to read the measured distance to an object
1606
or the distance covered by the user since the last reboot while
1607
activated. Units after application of scale are meters.
1609
What: /sys/bus/iio/devices/iio:deviceX/store_eeprom
1610
KernelVersion: 3.4.0
1611
Contact: linux-iio@vger.kernel.org
1612
Description:
1613
Writing '1' stores the current device configuration into
1614
on-chip EEPROM. After power-up or chip reset the device will
1615
automatically load the saved configuration.
1617
What: /sys/.../iio:deviceX/in_proximity_raw
1618
What: /sys/.../iio:deviceX/in_proximity_input
1619
What: /sys/.../iio:deviceX/in_proximityY_raw
1620
KernelVersion: 3.4
1621
Contact: linux-iio@vger.kernel.org
1622
Description:
1623
Proximity measurement indicating that some
1624
object is near the sensor, usually by observing
1625
reflectivity of infrared or ultrasound emitted.
1627
Often these sensors are unit less and as such conversion
1628
to SI units is not possible. Higher proximity measurements
1629
indicate closer objects, and vice versa. Units after
1630
application of scale and offset are meters.
1632
What: /sys/.../iio:deviceX/in_illuminance_input
1633
What: /sys/.../iio:deviceX/in_illuminance_raw
1634
What: /sys/.../iio:deviceX/in_illuminanceY_input
1635
What: /sys/.../iio:deviceX/in_illuminanceY_raw
1636
What: /sys/.../iio:deviceX/in_illuminanceY_mean_raw
1637
What: /sys/.../iio:deviceX/in_illuminance_ir_raw
1638
What: /sys/.../iio:deviceX/in_illuminance_clear_raw
1639
KernelVersion: 3.4
1640
Contact: linux-iio@vger.kernel.org
1641
Description:
1642
Illuminance measurement, units after application of scale
1643
and offset are lux.
1645
What: /sys/.../iio:deviceX/in_intensityY_raw
1646
What: /sys/.../iio:deviceX/in_intensityY_ir_raw
1647
What: /sys/.../iio:deviceX/in_intensityY_both_raw
1648
What: /sys/.../iio:deviceX/in_intensityY_uv_raw
1649
What: /sys/.../iio:deviceX/in_intensityY_uva_raw
1650
What: /sys/.../iio:deviceX/in_intensityY_uvb_raw
1651
What: /sys/.../iio:deviceX/in_intensityY_duv_raw
1652
What: /sys/.../iio:deviceX/in_intensity_red_raw
1653
What: /sys/.../iio:deviceX/in_intensity_green_raw
1654
What: /sys/.../iio:deviceX/in_intensity_blue_raw
1655
What: /sys/.../iio:deviceX/in_intensity_clear_raw
1656
KernelVersion: 3.4
1657
Contact: linux-iio@vger.kernel.org
1658
Description:
1659
Unit-less light intensity. Modifiers both and ir indicate
1660
that measurements contain visible and infrared light
1661
components or just infrared light, respectively. Modifier
1662
uv indicates that measurements contain ultraviolet light
1663
components. Modifiers uva, uvb and duv indicate that
1664
measurements contain A, B or deep (C) ultraviolet light
1665
components respectively.
1667
What: /sys/.../iio:deviceX/in_uvindex_input
1668
KernelVersion: 4.6
1669
Contact: linux-iio@vger.kernel.org
1670
Description:
1671
UV light intensity index measuring the human skin's response to
1672
different wavelength of sunlight weighted according to the
1673
standardised CIE Erythemal Action Spectrum. UV index values range
1674
from 0 (low) to >=11 (extreme).
1676
What: /sys/.../iio:deviceX/in_intensity_integration_time
1677
What: /sys/.../iio:deviceX/in_intensity_red_integration_time
1678
What: /sys/.../iio:deviceX/in_intensity_green_integration_time
1679
What: /sys/.../iio:deviceX/in_intensity_blue_integration_time
1680
What: /sys/.../iio:deviceX/in_intensity_clear_integration_time
1681
What: /sys/.../iio:deviceX/in_illuminance_integration_time
1682
KernelVersion: 3.12
1683
Contact: linux-iio@vger.kernel.org
1684
Description:
1685
This attribute is used to get/set the integration time in
1686
seconds. If shared across all channels of a given type,
1687
<type>_integration_time is used.
1689
What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_integration_time
1690
KernelVersion: 4.0
1691
Contact: linux-iio@vger.kernel.org
1692
Description:
1693
Number of seconds in which to compute speed.
1695
What: /sys/bus/iio/devices/iio:deviceX/in_rot_quaternion_raw
1696
KernelVersion: 3.15
1697
Contact: linux-iio@vger.kernel.org
1698
Description:
1699
Raw value of quaternion components using a format
1700
x y z w. Here x, y, and z component represents the axis about
1701
which a rotation will occur and w component represents the
1702
amount of rotation.
1704
What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_raw
1705
What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_raw
1706
What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_raw
1707
What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_raw
1708
KernelVersion: 3.15
1709
Contact: linux-iio@vger.kernel.org
1710
Description:
1711
Raw value of rotation from true/magnetic north measured with
1712
or without compensation from tilt sensors.
1714
What: /sys/bus/iio/devices/iio:deviceX/in_currentY_raw
1715
What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_raw
1716
KernelVersion: 3.17
1717
Contact: linux-iio@vger.kernel.org
1718
Description:
1719
Raw current measurement from channel Y. Units are in milliamps
1720
after application of scale and offset. If no offset or scale is
1721
present, output should be considered as processed with the
1722
unit in milliamps. In special cases where the channel does not
1723
correspond to externally available input one of the named
1724
versions may be used.
1726
Channels with 'i' and 'q' modifiers always exist in pairs and both
1727
channels refer to the same signal. The 'i' channel contains the in-phase
1728
component of the signal while the 'q' channel contains the quadrature
1729
component.
1731
What: /sys/bus/iio/devices/iio:deviceX/in_altcurrentY_rms_raw
1732
KernelVersion: 6.18
1733
Contact: linux-iio@vger.kernel.org
1734
Description:
1735
Raw (unscaled no bias removal etc.) Root Mean Square (RMS) current
1736
measurement from channel Y. Units after application of scale and
1737
offset are milliamps.
1739
What: /sys/.../iio:deviceX/in_energy_en
1740
What: /sys/.../iio:deviceX/in_distance_en
1741
What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_en
1742
What: /sys/.../iio:deviceX/in_steps_en
1743
KernelVersion: 3.19
1744
Contact: linux-iio@vger.kernel.org
1745
Description:
1746
Activates a device feature that runs in firmware/hardware.
1747
E.g. for steps: the pedometer saves power while not used;
1748
when activated, it will count the steps taken by the user in
1749
firmware and export them through in_steps_input.
1751
What: /sys/.../iio:deviceX/in_steps_input
1752
KernelVersion: 3.19
1753
Contact: linux-iio@vger.kernel.org
1754
Description:
1755
This attribute is used to read the number of steps taken by the user
1756
since the last reboot while activated.
1758
What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_input
1759
What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_raw
1760
KernelVersion: 3.19
1761
Contact: linux-iio@vger.kernel.org
1762
Description:
1763
This attribute is used to read the current speed value of the
1764
user (which is the norm or magnitude of the velocity vector).
1765
Units after application of scale are m/s.
1767
What: /sys/.../iio:deviceX/in_steps_debounce_count
1768
KernelVersion: 4.0
1769
Contact: linux-iio@vger.kernel.org
1770
Description:
1771
Specifies the number of steps that must occur within
1772
in_steps_filter_debounce_time for the pedometer to decide the
1773
consumer is making steps.
1775
What: /sys/.../iio:deviceX/in_steps_debounce_time
1776
KernelVersion: 4.0
1777
Contact: linux-iio@vger.kernel.org
1778
Description:
1779
Specifies number of seconds in which we compute the steps
1780
that occur in order to decide if the consumer is making steps.
1782
What: /sys/bus/iio/devices/iio:deviceX/bufferY/watermark
1783
KernelVersion: 5.11
1784
Contact: linux-iio@vger.kernel.org
1785
Description:
1786
A single positive integer specifying the maximum number of scan
1787
elements to wait for.
1789
Poll will block until the watermark is reached.
1791
Blocking read will wait until the minimum between the requested
1792
read amount or the low water mark is available.
1794
Non-blocking read will retrieve the available samples from the
1795
buffer even if there are less samples then watermark level. This
1796
allows the application to block on poll with a timeout and read
1797
the available samples after the timeout expires and thus have a
1798
maximum delay guarantee.
1800
What: /sys/bus/iio/devices/iio:deviceX/bufferY/data_available
1801
KernelVersion: 5.11
1802
Contact: linux-iio@vger.kernel.org
1803
Description:
1804
A read-only value indicating the bytes of data available in the
1805
buffer. In the case of an output buffer, this indicates the
1806
amount of empty space available to write data to. In the case of
1807
an input buffer, this indicates the amount of data available for
1808
reading.
1810
What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_enabled
1811
KernelVersion: 4.2
1812
Contact: linux-iio@vger.kernel.org
1813
Description:
1814
A read-only boolean value that indicates if the hardware fifo is
1815
currently enabled or disabled. If the device does not have a
1816
hardware fifo this entry is not present.
1817
The hardware fifo is enabled when the buffer is enabled if the
1818
current hardware fifo watermark level is set and other current
1819
device settings allows it (e.g. if a trigger is set that samples
1820
data differently that the hardware fifo does then hardware fifo
1821
will not enabled).
1823
If the hardware fifo is enabled and the level of the hardware
1824
fifo reaches the hardware fifo watermark level the device will
1825
flush its hardware fifo to the device buffer. Doing a non
1826
blocking read on the device when no samples are present in the
1827
device buffer will also force a flush.
1829
When the hardware fifo is enabled there is no need to use a
1830
trigger to use buffer mode since the watermark settings
1831
guarantees that the hardware fifo is flushed to the device
1832
buffer.
1834
What: /sys/bus/iio/devices/iio:device*/buffer/hwfifo_timeout
1835
KernelVersion: 4.12
1836
Contact: linux-iio@vger.kernel.org
1837
Description:
1838
A read/write property to provide capability to delay reporting of
1839
samples till a timeout is reached. This allows host processors to
1840
sleep, while the sensor is storing samples in its internal fifo.
1841
The maximum timeout in seconds can be specified by setting
1842
hwfifo_timeout.The current delay can be read by reading
1843
hwfifo_timeout. A value of 0 means that there is no timeout.
1845
What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark
1846
KernelVersion: 4.2
1847
Contact: linux-iio@vger.kernel.org
1848
Description:
1849
Read-only entry that contains a single integer specifying the
1850
current watermark level for the hardware fifo. If the device
1851
does not have a hardware fifo this entry is not present.
1852
The watermark level for the hardware fifo is set by the driver
1853
based on the value set by the user in buffer/watermark but
1854
taking into account hardware limitations (e.g. most hardware
1855
buffers are limited to 32-64 samples, some hardware buffers
1856
watermarks are fixed or have minimum levels). A value of 0
1857
means that the hardware watermark is unset.
1859
What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_min
1860
KernelVersion: 4.2
1861
Contact: linux-iio@vger.kernel.org
1862
Description:
1863
A single positive integer specifying the minimum watermark level
1864
for the hardware fifo of this device. If the device does not
1865
have a hardware fifo this entry is not present.
1867
If the user sets buffer/watermark to a value less than this one,
1868
then the hardware watermark will remain unset.
1870
What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_max
1871
KernelVersion: 4.2
1872
Contact: linux-iio@vger.kernel.org
1873
Description:
1874
A single positive integer specifying the maximum watermark level
1875
for the hardware fifo of this device. If the device does not
1876
have a hardware fifo this entry is not present.
1878
If the user sets buffer/watermark to a value greater than this
1879
one, then the hardware watermark will be capped at this value.
1881
What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_available
1882
KernelVersion: 4.2
1883
Contact: linux-iio@vger.kernel.org
1884
Description:
1885
A list of positive integers specifying the available watermark
1886
levels for the hardware fifo. This entry is optional and if it
1887
is not present it means that all the values between
1888
hwfifo_watermark_min and hwfifo_watermark_max are supported.
1890
If the user sets buffer/watermark to a value greater than
1891
hwfifo_watermak_min but not equal to any of the values in this
1892
list, the driver will chose an appropriate value for the
1893
hardware fifo watermark level.
1895
What: /sys/bus/iio/devices/iio:deviceX/in_temp_calibemissivity
1896
What: /sys/bus/iio/devices/iio:deviceX/in_tempY_calibemissivity
1897
What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_calibemissivity
1898
What: /sys/bus/iio/devices/iio:deviceX/in_tempY_object_calibemissivity
1899
KernelVersion: 4.1
1900
Contact: linux-iio@vger.kernel.org
1901
Description:
1902
The emissivity ratio of the surface in the field of view of the
1903
contactless temperature sensor. Emissivity varies from 0 to 1,
1904
with 1 being the emissivity of a black body.
1906
What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_oversampling_ratio
1907
What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_oversampling_ratio
1908
What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_oversampling_ratio
1909
KernelVersion: 4.2
1910
Contact: linux-iio@vger.kernel.org
1911
Description:
1912
Hardware applied number of measurements for acquiring one
1913
data point. The HW will do <type>[_name]_oversampling_ratio
1914
measurements and return the average value as output data. Each
1915
value resulted from <type>[_name]_oversampling_ratio measurements
1916
is considered as one sample for <type>[_name]_sampling_frequency.
1918
What: /sys/bus/iio/devices/iio:deviceX/in_concentration_raw
1919
What: /sys/bus/iio/devices/iio:deviceX/in_concentrationY_raw
1920
What: /sys/bus/iio/devices/iio:deviceX/in_concentration_co2_raw
1921
What: /sys/bus/iio/devices/iio:deviceX/in_concentrationY_co2_raw
1922
What: /sys/bus/iio/devices/iio:deviceX/in_concentration_ethanol_raw
1923
What: /sys/bus/iio/devices/iio:deviceX/in_concentrationY_ethanol_raw
1924
What: /sys/bus/iio/devices/iio:deviceX/in_concentration_h2_raw
1925
What: /sys/bus/iio/devices/iio:deviceX/in_concentrationY_h2_raw
1926
What: /sys/bus/iio/devices/iio:deviceX/in_concentration_o2_raw
1927
What: /sys/bus/iio/devices/iio:deviceX/in_concentrationY_o2_raw
1928
What: /sys/bus/iio/devices/iio:deviceX/in_concentration_voc_raw
1929
What: /sys/bus/iio/devices/iio:deviceX/in_concentrationY_voc_raw
1930
KernelVersion: 4.3
1931
Contact: linux-iio@vger.kernel.org
1932
Description:
1933
Raw (unscaled no offset etc.) reading of a substance. Units
1934
after application of scale and offset are percents.
1936
What: /sys/bus/iio/devices/iio:deviceX/in_resistance_raw
1937
What: /sys/bus/iio/devices/iio:deviceX/in_resistanceY_raw
1938
What: /sys/bus/iio/devices/iio:deviceX/out_resistance_raw
1939
What: /sys/bus/iio/devices/iio:deviceX/out_resistanceY_raw
1940
KernelVersion: 4.3
1941
Contact: linux-iio@vger.kernel.org
1942
Description:
1943
Raw (unscaled no offset etc.) resistance reading.
1944
Units after application of scale and offset are ohms.
1946
What: /sys/bus/iio/devices/iio:deviceX/heater_enable
1947
KernelVersion: 4.1.0
1948
Contact: linux-iio@vger.kernel.org
1949
Description:
1950
'1' (enable) or '0' (disable) specifying the enable
1951
of heater function. Same reading values apply.
1953
This ABI is especially applicable for humidity sensors
1954
to heatup the device and get rid of any condensation
1955
in some humidity environment
1957
What: /sys/bus/iio/devices/iio:deviceX/in_ph_raw
1958
KernelVersion: 4.5
1959
Contact: linux-iio@vger.kernel.org
1960
Description:
1961
Raw (unscaled no offset etc.) pH reading of a substance as a negative
1962
base-10 logarithm of hydrodium ions in a litre of water.
1964
What: /sys/bus/iio/devices/iio:deviceX/mount_matrix
1965
What: /sys/bus/iio/devices/iio:deviceX/in_mount_matrix
1966
What: /sys/bus/iio/devices/iio:deviceX/out_mount_matrix
1967
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_mount_matrix
1968
What: /sys/bus/iio/devices/iio:deviceX/in_accel_mount_matrix
1969
KernelVersion: 4.6
1970
Contact: linux-iio@vger.kernel.org
1971
Description:
1972
Mounting matrix for IIO sensors. This is a rotation matrix which
1973
informs userspace about sensor chip's placement relative to the
1974
main hardware it is mounted on.
1976
Main hardware placement is defined according to the local
1977
reference frame related to the physical quantity the sensor
1978
measures.
1980
Given that the rotation matrix is defined in a board specific
1981
way (platform data and / or device-tree), the main hardware
1982
reference frame definition is left to the implementor's choice
1983
(see below for a magnetometer example).
1985
Applications should apply this rotation matrix to samples so
1986
that when main hardware reference frame is aligned onto local
1987
reference frame, then sensor chip reference frame is also
1988
perfectly aligned with it.
1990
Matrix is a 3x3 unitary matrix and typically looks like
1991
[0, 1, 0; 1, 0, 0; 0, 0, -1]. Identity matrix
1992
[1, 0, 0; 0, 1, 0; 0, 0, 1] means sensor chip and main hardware
1993
are perfectly aligned with each other.
1995
For example, a mounting matrix for a magnetometer sensor informs
1996
userspace about sensor chip's ORIENTATION relative to the main
1997
hardware.
1999
More specifically, main hardware orientation is defined with
2000
respect to the LOCAL EARTH GEOMAGNETIC REFERENCE FRAME where :
2002
* Y is in the ground plane and positive towards magnetic North ;
2003
* X is in the ground plane, perpendicular to the North axis and
2004
positive towards the East ;
2005
* Z is perpendicular to the ground plane and positive upwards.
2007
An implementor might consider that for a hand-held device, a
2008
'natural' orientation would be 'front facing camera at the top'.
2009
The main hardware reference frame could then be described as :
2011
* Y is in the plane of the screen and is positive towards the
2012
top of the screen ;
2013
* X is in the plane of the screen, perpendicular to Y axis, and
2014
positive towards the right hand side of the screen ;
2015
* Z is perpendicular to the screen plane and positive out of the
2016
screen.
2018
Another example for a quadrotor UAV might be :
2020
* Y is in the plane of the propellers and positive towards the
2021
front-view camera;
2022
* X is in the plane of the propellers, perpendicular to Y axis,
2023
and positive towards the starboard side of the UAV ;
2024
* Z is perpendicular to propellers plane and positive upwards.
2026
What: /sys/bus/iio/devices/iio:deviceX/in_electricalconductivity_raw
2027
KernelVersion: 4.8
2028
Contact: linux-iio@vger.kernel.org
2029
Description:
2030
Raw (unscaled no offset etc.) electric conductivity reading.
2031
Units after application of scale and offset are siemens per
2032
meter.
2034
What: /sys/bus/iio/devices/iio:deviceX/in_countY_raw
2035
KernelVersion: 4.10
2036
Contact: linux-iio@vger.kernel.org
2037
Description:
2038
This interface is deprecated; please use the Counter subsystem.
2040
Raw counter device counts from channel Y. For quadrature
2041
counters, multiplication by an available [Y]_scale results in
2042
the counts of a single quadrature signal phase from channel Y.
2044
What: /sys/bus/iio/devices/iio:deviceX/in_indexY_raw
2045
KernelVersion: 4.10
2046
Contact: linux-iio@vger.kernel.org
2047
Description:
2048
This interface is deprecated; please use the Counter subsystem.
2050
Raw counter device index value from channel Y. This attribute
2051
provides an absolute positional reference (e.g. a pulse once per
2052
revolution) which may be used to home positional systems as
2053
required.
2055
What: /sys/bus/iio/devices/iio:deviceX/in_count_count_direction_available
2056
KernelVersion: 4.12
2057
Contact: linux-iio@vger.kernel.org
2058
Description:
2059
This interface is deprecated; please use the Counter subsystem.
2061
A list of possible counting directions which are:
2063
- "up" : counter device is increasing.
2064
- "down": counter device is decreasing.
2066
What: /sys/bus/iio/devices/iio:deviceX/in_countY_count_direction
2067
KernelVersion: 4.12
2068
Contact: linux-iio@vger.kernel.org
2069
Description:
2070
This interface is deprecated; please use the Counter subsystem.
2072
Raw counter device counters direction for channel Y.
2074
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_label
2075
What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_label
2076
KernelVersion: 5.8
2077
Contact: linux-iio@vger.kernel.org
2078
Description:
2079
Optional symbolic label to a device channel.
2080
If a label is defined for this channel add that to the channel
2081
specific attributes. This is useful for userspace to be able to
2082
better identify an individual channel.
2084
What: /sys/bus/iio/devices/iio:deviceX/in_phaseY_raw
2085
KernelVersion: 4.18
2086
Contact: linux-iio@vger.kernel.org
2087
Description:
2088
Raw (unscaled) phase difference reading from channel Y.
2089
Units after application of scale and offset are radians.
2091
What: /sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm1_input
2092
What: /sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm1_input
2093
What: /sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm2p5_input
2094
What: /sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm2p5_input
2095
What: /sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm4_input
2096
What: /sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm4_input
2097
What: /sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm10_input
2098
What: /sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm10_input
2099
KernelVersion: 4.22
2100
Contact: linux-iio@vger.kernel.org
2101
Description:
2102
Mass concentration reading of particulate matter in ug / m3.
2103
pmX consists of particles with aerodynamic diameter less or
2104
equal to X micrometers.
2106
What: /sys/bus/iio/devices/iio:deviceX/events/in_illuminance_period_available
2107
Date: November 2019
2108
KernelVersion: 5.4
2109
Contact: linux-iio@vger.kernel.org
2110
Description:
2111
List of valid periods (in seconds) for which the light intensity
2112
must be above the threshold level before interrupt is asserted.
2114
What: /sys/bus/iio/devices/iio:deviceX/in_filter_notch_center_frequency
2115
KernelVersion: 5.5
2116
Contact: linux-iio@vger.kernel.org
2117
Description:
2118
Center frequency in Hz for a notch filter. Used i.e. for line
2119
noise suppression.
2121
What: /sys/bus/iio/devices/iio:deviceX/in_temp_thermocouple_type
2122
KernelVersion: 5.5
2123
Contact: linux-iio@vger.kernel.org
2124
Description:
2125
One of the following thermocouple types: B, E, J, K, N, R, S, T.
2127
What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_calibambient
2128
What: /sys/bus/iio/devices/iio:deviceX/in_tempY_object_calibambient
2129
KernelVersion: 5.10
2130
Contact: linux-iio@vger.kernel.org
2131
Description:
2132
Calibrated ambient temperature for object temperature
2133
calculation in milli degrees Celsius.
2135
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_x_raw
2136
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_y_raw
2137
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_z_raw
2138
KernelVersion: 5.10
2139
Contact: linux-iio@vger.kernel.org
2140
Description:
2141
Unscaled light intensity according to CIE 1931/DIN 5033 color space.
2142
Units after application of scale are nano nanowatts per square meter.
2144
What: /sys/bus/iio/devices/iio:deviceX/in_anglY_label
2145
KernelVersion: 5.12
2146
Contact: linux-iio@vger.kernel.org
2147
Description:
2148
Optional symbolic label for channel Y.
2149
For Intel hid hinge sensor, the label values are:
2150
hinge, keyboard, screen. It means the three channels
2151
each correspond respectively to hinge angle, keyboard angle,
2152
and screen angle.
2154
What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_hysteresis_relative
2155
What: /sys/bus/iio/devices/iio:deviceX/in_intensity_hysteresis_relative
2156
KernelVersion: 5.12
2157
Contact: linux-iio@vger.kernel.org
2158
Description:
2159
Specify the percent for light sensor relative to the channel
2160
absolute value that a data field should change before an event
2161
is generated. Units are a percentage of the prior reading.
2163
What: /sys/bus/iio/devices/iio:deviceX/calibration_auto_enable
2164
Date: June 2020
2165
KernelVersion: 5.8
2166
Contact: linux-iio@vger.kernel.org
2167
Description:
2168
Some sensors have the ability to apply auto calibration at
2169
runtime. For example, it may be necessary to compensate for
2170
contaminant build-up in a measurement chamber or optical
2171
element deterioration that would otherwise lead to sensor drift.
2173
Writing 1 or 0 to this attribute will respectively activate or
2174
deactivate this auto calibration function.
2176
Upon reading, the current status is returned.
2178
What: /sys/bus/iio/devices/iio:deviceX/calibration_forced_value
2179
Date: June 2020
2180
KernelVersion: 5.8
2181
Contact: linux-iio@vger.kernel.org
2182
Description:
2183
Some sensors have the ability to apply a manual calibration using
2184
a known measurement value, perhaps obtained from an external
2185
reference device.
2187
Writing a value to this function will force such a calibration
2188
change. For the scd30 the value should be from the range
2189
[400 1 2000].
2191
Note for the scd30 that a valid value may only be obtained once
2192
it is has been written. Until then any read back of this value
2193
should be ignored. As for the scd4x an error will be returned
2194
immediately if the manual calibration has failed.
2196
What: /sys/bus/iio/devices/iio:deviceX/calibration_forced_value_available
2197
KernelVersion: 5.15
2198
Contact: linux-iio@vger.kernel.org
2199
Description:
2200
Available range for the forced calibration value, expressed as:
2202
- a range specified as "[min step max]"
2204
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_sampling_frequency
2205
What: /sys/bus/iio/devices/iio:deviceX/in_powerY_sampling_frequency
2206
What: /sys/bus/iio/devices/iio:deviceX/in_currentY_sampling_frequency
2207
KernelVersion: 5.20
2208
Contact: linux-iio@vger.kernel.org
2209
Description:
2210
Some devices have separate controls of sampling frequency for
2211
individual channels. If multiple channels are enabled in a scan,
2212
then the sampling_frequency of the scan may be computed from the
2213
per channel sampling frequencies.
2215
What: /sys/.../events/in_accel_gesture_singletap_en
2216
What: /sys/.../events/in_accel_gesture_doubletap_en
2217
KernelVersion: 6.1
2218
Contact: linux-iio@vger.kernel.org
2219
Description:
2220
Device generates an event on a single or double tap.
2222
What: /sys/.../events/in_accel_gesture_singletap_value
2223
What: /sys/.../events/in_accel_gesture_doubletap_value
2224
KernelVersion: 6.1
2225
Contact: linux-iio@vger.kernel.org
2226
Description:
2227
Specifies the threshold value that the device is comparing
2228
against to generate the tap gesture event. The lower
2229
threshold value increases the sensitivity of tap detection.
2230
Units and the exact meaning of value are device-specific.
2232
What: /sys/.../events/in_accel_gesture_tap_value_available
2233
KernelVersion: 6.1
2234
Contact: linux-iio@vger.kernel.org
2235
Description:
2236
Lists all available threshold values which can be used to
2237
modify the sensitivity of the tap detection.
2239
What: /sys/.../events/in_accel_gesture_singletap_reset_timeout
2240
What: /sys/.../events/in_accel_gesture_doubletap_reset_timeout
2241
KernelVersion: 6.1
2242
Contact: linux-iio@vger.kernel.org
2243
Description:
2244
Specifies the timeout value in seconds for the tap detector
2245
to not to look for another tap event after the event as
2246
occurred. Basically the minimum quiet time between the two
2247
single-tap's or two double-tap's.
2249
What: /sys/.../events/in_accel_gesture_tap_reset_timeout_available
2250
KernelVersion: 6.1
2251
Contact: linux-iio@vger.kernel.org
2252
Description:
2253
Lists all available tap reset timeout values. Units in seconds.
2255
What: /sys/.../events/in_accel_gesture_doubletap_tap2_min_delay
2256
KernelVersion: 6.1
2257
Contact: linux-iio@vger.kernel.org
2258
Description:
2259
Specifies the minimum quiet time in seconds between the two
2260
taps of a double tap.
2262
What: /sys/.../events/in_accel_gesture_doubletap_tap2_min_delay_available
2263
KernelVersion: 6.1
2264
Contact: linux-iio@vger.kernel.org
2265
Description:
2266
Lists all available delay values between two taps in the double
2267
tap. Units in seconds.
2269
What: /sys/.../events/in_accel_gesture_tap_maxtomin_time
2270
KernelVersion: 6.1
2271
Contact: linux-iio@vger.kernel.org
2272
Description:
2273
Specifies the maximum time difference allowed between upper
2274
and lower peak of tap to consider it as the valid tap event.
2275
Units in seconds.
2277
What: /sys/.../events/in_accel_gesture_tap_maxtomin_time_available
2278
KernelVersion: 6.1
2279
Contact: linux-iio@vger.kernel.org
2280
Description:
2281
Lists all available time values between upper peak to lower
2282
peak. Units in seconds.
2284
What: /sys/bus/iio/devices/iio:deviceX/in_rot_yaw_raw
2285
What: /sys/bus/iio/devices/iio:deviceX/in_rot_pitch_raw
2286
What: /sys/bus/iio/devices/iio:deviceX/in_rot_roll_raw
2287
KernelVersion: 6.1
2288
Contact: linux-iio@vger.kernel.org
2289
Description:
2290
Raw (unscaled) euler angles readings. Units after
2291
application of scale are deg.
2293
What: /sys/bus/iio/devices/iio:deviceX/serialnumber
2294
KernelVersion: 6.1
2295
Contact: linux-iio@vger.kernel.org
2296
Description:
2297
An example format is 16-bytes, 2-digits-per-byte, HEX-string
2298
representing the sensor unique ID number.
2300
What: /sys/bus/iio/devices/iio:deviceX/filter_type_available
2301
What: /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_filter_type_available
2302
KernelVersion: 6.1
2303
Contact: linux-iio@vger.kernel.org
2304
Description:
2305
Reading returns a list with the possible filter modes. Options
2306
for the attribute:
2308
* "none" - Filter is disabled/bypassed.
2309
* "sinc1" - The digital sinc1 filter. Fast 1st
2310
conversion time. Poor noise performance.
2311
* "sinc3" - The digital sinc3 filter. Moderate 1st
2312
conversion time. Good noise performance.
2313
* "sinc3+pf1" - Sinc3 + device specific Post Filter 1.
2314
* "sinc3+pf2" - Sinc3 + device specific Post Filter 2.
2315
* "sinc3+pf3" - Sinc3 + device specific Post Filter 3.
2316
* "sinc3+pf4" - Sinc3 + device specific Post Filter 4.
2317
* "sinc3+rej60" - Sinc3 + 60Hz rejection.
2318
* "sinc3+sinc1" - Sinc3 + averaging by 8. Low 1st conversion
2319
time.
2320
* "sinc4" - Sinc 4. Excellent noise performance. Long
2321
1st conversion time.
2322
* "sinc4+lp" - Sinc4 + Low Pass Filter.
2323
* "sinc4+sinc1" - Sinc4 + averaging by 8. Low 1st conversion
2324
time.
2325
* "sinc4+rej60" - Sinc4 + 60Hz rejection.
2326
* "sinc5" - The digital sinc5 filter. Excellent noise
2327
performance
2328
* "sinc5+avg" - Sinc5 + averaging by 4.
2329
* "sinc5+pf1" - Sinc5 + device specific Post Filter 1.
2330
* "sinc5+sinc1" - Sinc5 + Sinc1.
2331
* "sinc5+sinc1+pf1" - Sinc5 + Sinc1 + device specific Post Filter 1.
2332
* "sinc5+sinc1+pf2" - Sinc5 + Sinc1 + device specific Post Filter 2.
2333
* "sinc5+sinc1+pf3" - Sinc5 + Sinc1 + device specific Post Filter 3.
2334
* "sinc5+sinc1+pf4" - Sinc5 + Sinc1 + device specific Post Filter 4.
2335
* "wideband" - filter with wideband low ripple passband
2336
and sharp transition band.
2338
What: /sys/bus/iio/devices/iio:deviceX/filter_type
2339
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_filter_type
2340
KernelVersion: 6.1
2341
Contact: linux-iio@vger.kernel.org
2342
Description:
2343
Specifies which filter type apply to the channel. The possible
2344
values are given by the filter_type_available attribute.
2346
What: /sys/.../events/in_proximity_thresh_either_runningperiod
2347
KernelVersion: 6.6
2348
Contact: linux-iio@vger.kernel.org
2349
Description:
2350
A running period of time (in seconds) for which
2351
in_proximity_thresh_either_runningcount amount of conditions
2352
must occur before an event is generated. If direction is not
2353
specified then this period applies to both directions.
2355
What: /sys/.../events/in_proximity_thresh_either_runningcount
2356
KernelVersion: 6.6
2357
Contact: linux-iio@vger.kernel.org
2358
Description:
2359
Number of conditions that must occur, during a running
2360
period, before an event is generated.
2362
What: /sys/bus/iio/devices/iio:deviceX/in_colortemp_raw
2363
KernelVersion: 6.7
2364
Contact: linux-iio@vger.kernel.org
2365
Description:
2366
Represents light color temperature, which measures light color
2367
temperature in Kelvin.
2369
What: /sys/bus/iio/devices/iio:deviceX/in_chromaticity_x_raw
2370
What: /sys/bus/iio/devices/iio:deviceX/in_chromaticity_y_raw
2371
KernelVersion: 6.7
2372
Contact: linux-iio@vger.kernel.org
2373
Description:
2374
The x and y light color coordinate on the CIE 1931 chromaticity
2375
diagram.
2377
What: /sys/bus/iio/devices/iio:deviceX/events/in_altvoltageY_mag_either_label
2378
What: /sys/bus/iio/devices/iio:deviceX/events/in_altvoltageY_mag_rising_label
2379
What: /sys/bus/iio/devices/iio:deviceX/events/in_altvoltageY_thresh_falling_label
2380
What: /sys/bus/iio/devices/iio:deviceX/events/in_altvoltageY_thresh_rising_label
2381
What: /sys/bus/iio/devices/iio:deviceX/events/in_anglvelY_mag_rising_label
2382
What: /sys/bus/iio/devices/iio:deviceX/events/in_anglY_thresh_rising_label
2383
What: /sys/bus/iio/devices/iio:deviceX/events/in_phaseY_mag_rising_label
2384
KernelVersion: 6.7
2385
Contact: linux-iio@vger.kernel.org
2386
Description:
2387
Optional symbolic label to a device channel event.
2388
If a label is defined for this event add that to the event
2389
specific attributes. This is useful for userspace to be able to
2390
better identify an individual event.
2392
What: /sys/.../events/in_accel_gesture_tap_wait_timeout
2393
KernelVersion: 6.7
2394
Contact: linux-iio@vger.kernel.org
2395
Description:
2396
Enable tap gesture confirmation with timeout.
2398
What: /sys/.../events/in_accel_gesture_tap_wait_dur
2399
KernelVersion: 6.7
2400
Contact: linux-iio@vger.kernel.org
2401
Description:
2402
Timeout value in seconds for tap gesture confirmation.
2404
What: /sys/.../events/in_accel_gesture_tap_wait_dur_available
2405
KernelVersion: 6.7
2406
Contact: linux-iio@vger.kernel.org
2407
Description:
2408
List of available timeout value for tap gesture confirmation.
2410
What: /sys/.../iio:deviceX/in_shunt_resistor
2411
What: /sys/.../iio:deviceX/in_current_shunt_resistor
2412
What: /sys/.../iio:deviceX/in_power_shunt_resistor
2413
KernelVersion: 6.10
2414
Contact: linux-iio@vger.kernel.org
2415
Description:
2416
The value of current sense resistor in Ohms.
2418
What: /sys/.../iio:deviceX/in_attention_input
2419
KernelVersion: 6.13
2420
Contact: linux-iio@vger.kernel.org
2421
Description:
2422
Value representing the user's attention to the system expressed
2423
in units as percentage. This usually means if the user is
2424
looking at the screen or not.
3. 한국어 전문 번역
영어 원문의 문단 순서와 의미를 유지한 전체 번역입니다. 코드, 함수명, symbol과 URL은 원문 표기를 유지합니다.
IIO device, trigger와 buffer objects
1-28다음 세 record의 KernelVersion은 2.6.35, Contact는 linux-iio@vger.kernel.org입니다.
| What | 전문 번역 |
|---|---|
| /sys/bus/iio/devices/iio:deviceX | 하나의 communication port를 통해 접근하는 hardware chip 또는 device입니다. Sensor channels의 grouping에 대응합니다. X는 device의 IIO index입니다. |
| /sys/bus/iio/devices/triggerX | Kernel 내부 buffer로 data capture를 구동하는 event-driven driver입니다. Hardware가 생성한 event(예: data ready)에 기반하며 IIO device도 갖는 device driver가 제공할 수 있고, 다른 hardware(예: periodic timer, GPIO 또는 high-resolution timer)를 위한 별도 driver가 제공할 수도 있습니다. Trigger type별 elements를 포함하지만 일반화하기 어려워 이 file에는 문서화하지 않습니다. X는 trigger의 IIO index입니다. |
| /sys/bus/iio/devices/iio:deviceX/buffer | Device의 buffer와 관련된 attributes directory입니다. |
IIO device name과 표준 label
29-85| 항목 | 전문 번역 |
|---|---|
| What | /sys/bus/iio/devices/iio:deviceX/name |
| KernelVersion | 2.6.35 |
| Contact | linux-iio@vger.kernel.org |
| Description | Device X의 physical chip/device 설명입니다. 일반적으로 part number입니다. |
| 항목 | 전문 번역 |
|---|---|
| What | /sys/bus/iio/devices/iio:deviceX/label |
| KernelVersion | 5.8 |
| Contact | linux-iio@vger.kernel.org |
| Description | Device의 선택적 symbolic label입니다. Userspace가 개별 device를 더 잘 식별하는 데 유용합니다. Label 내용은 free-form이지만 아래와 같은 표준 용도가 있습니다. |
| 표준 label | 전문 번역 |
|---|---|
| proximity-wifi | 특정 WLAN antenna와 사람 사이의 proximity를 나타냅니다. |
| proximity-lte | 특정 WWAN/LTE antenna와 사람 사이의 proximity를 나타냅니다. |
| proximity-wifi-lte | Wi-Fi와 LTE antennas에 관련된 proximity를 나타냅니다. |
| proximity-wifi-left | 여러 antennas가 있는 device의 왼쪽 Wi-Fi antenna proximity를 나타냅니다. |
| proximity-wifi-right | 여러 antennas가 있는 device의 오른쪽 Wi-Fi antenna proximity를 나타냅니다. |
| proximity-palmrest | Keyboard palmrest와의 proximity를 나타냅니다. |
| proximity-palmrest-left | Palmrest 왼쪽 부분과의 proximity를 나타냅니다. |
| proximity-palmrest-right | Palmrest 오른쪽 부분과의 proximity를 나타냅니다. |
| proximity-lap | Device가 사용자의 lap 위에서 사용 중임을 나타냅니다. 이 값은 raw sensor reading이 아니라 firmware가 다른 sensor readings로 계산할 수 있다는 점에서 특별합니다. |
| accel-base | 360° yoga-style hinge가 있는 2-in-1의 base에 있는 accelerometer를 나타냅니다. |
| accel-display | 360° yoga-style hinge가 있는 2-in-1의 display에 있는 accelerometer를 나타냅니다. |
| accel-camera | AR application을 위해 swivel camera subassembly에 들어 있는 accelerometer를 나타냅니다. |
Antenna proximity labels는 userspace가 transmit power를 조정하여 Specific Absorption Rate(SAR) limits를 지키는 데 이 sensors를 사용할 수 있음을 알립니다. '-left'와 '-right' labels는 여러 antennas가 있는 devices에 사용합니다.
Buffered sample timestamp clock
87-93| 항목 | 전문 번역 |
|---|---|
| What | /sys/bus/iio/devices/iio:deviceX/current_timestamp_clock |
| KernelVersion | 4.5 |
| Contact | linux-iio@vger.kernel.org |
| Description | Device X의 buffered samples와 events에 timestamp를 지정할 때 사용하는 현재 POSIX clock을 식별하는 string입니다. |
Sampling frequency와 available values
94-127| What | 공통 metadata |
|---|---|
| /sys/bus/iio/devices/iio:deviceX/sampling_frequency | KernelVersion 2.6.35 / linux-iio@vger.kernel.org |
| /sys/bus/iio/devices/iio:deviceX/in_intensity_sampling_frequency | KernelVersion 2.6.35 / linux-iio@vger.kernel.org |
| /sys/bus/iio/devices/iio:deviceX/buffer/sampling_frequency | KernelVersion 2.6.35 / linux-iio@vger.kernel.org |
| /sys/bus/iio/devices/iio:deviceX/events/sampling_frequency | KernelVersion 2.6.35 / linux-iio@vger.kernel.org |
| /sys/bus/iio/devices/triggerX/sampling_frequency | KernelVersion 2.6.35 / linux-iio@vger.kernel.org |
일부 devices에는 internal clocks가 있습니다. 이 parameter는 그 결과인 sampling frequency를 설정합니다. 많은 devices에서 이 parameter는 단순히 input sampling 시점만 제어하지 않고 input filters 등에도 영향을 줍니다. Data-ready triggers, hardware buffers와 sysfs direct-access interfaces에 영향을 주므로 관련 directories 어디에든 존재할 수 있습니다. 위 항목 모두에 영향을 주는 경우 base device directory에 있습니다. stm32-timer-trigger에서는 sampling_frequency 0이 sampling 중지를 의미하도록 추가로 정의됩니다.
| What | 공통 metadata |
|---|---|
| /sys/bus/iio/devices/iio:deviceX/sampling_frequency_available | KernelVersion 2.6.35 / linux-iio@vger.kernel.org |
| /sys/bus/iio/devices/iio:deviceX/in_intensity_sampling_frequency_available | KernelVersion 2.6.35 / linux-iio@vger.kernel.org |
| /sys/bus/iio/devices/iio:deviceX/in_proximity_sampling_frequency_available | KernelVersion 2.6.35 / linux-iio@vger.kernel.org |
| /sys/.../iio:deviceX/buffer/sampling_frequency_available | KernelVersion 2.6.35 / linux-iio@vger.kernel.org |
| /sys/bus/iio/devices/triggerX/sampling_frequency_available | KernelVersion 2.6.35 / linux-iio@vger.kernel.org |
Internal sampling clock이 특정 frequencies 집합만 사용할 수 있으면 available values를 "0 2 4 6 8" 같은 작은 discrete 값 집합이나 minimum·step·maximum frequency를 갖는 "[min step max]" range로 지정할 수 있습니다.
ADC oversampling ratio
129-140| What | KernelVersion / Contact | 전문 번역 |
|---|---|---|
| /sys/bus/iio/devices/iio:deviceX/oversampling_ratio | 2.6.38 / linux-iio@vger.kernel.org | Hardware-dependent ADC oversampling입니다. 사용할 수 있는 경우 digital filter의 sampling ratio를 제어합니다. |
| /sys/bus/iio/devices/iio:deviceX/oversampling_ratio_available | 2.6.38 / linux-iio@vger.kernel.org | Oversampling filter가 지원하는 hardware-dependent values입니다. |
Voltage raw, differential와 RMS channels
142-176| What | KernelVersion / Contact | 전문 번역 |
|---|---|---|
| /sys/bus/iio/devices/iio:deviceX/in_voltageY_raw | 2.6.35 / linux-iio@vger.kernel.org | Channel Y의 raw voltage measurement입니다. Scale 적용이나 bias 제거 등을 하지 않은 값입니다. Channel이 외부에서 사용할 수 있는 input에 대응하지 않는 특수한 경우 named version을 사용할 수 있습니다. Event codes와 연결할 수 있도록 number는 항상 지정해야 하고 고유해야 합니다. Scale과 offset 적용 뒤의 단위는 millivolts입니다. |
| /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_raw | 2.6.35 / linux-iio@vger.kernel.org | Supply로 이름 붙인 channel Y의 raw voltage measurement입니다. Scale 적용이나 bias 제거 등을 하지 않은 값이며, number는 event codes와 연결할 수 있도록 항상 지정하고 고유해야 합니다. Scale과 offset 적용 뒤의 단위는 millivolts입니다. |
'i'와 'q' modifiers가 있는 channels는 항상 pair로 존재하며 두 channels 모두 같은 signal을 가리킵니다. 'i' channel은 signal의 in-phase component를 포함하고, 'q' channel은 quadrature component를 포함합니다.
| 항목 | 전문 번역 |
|---|---|
| What | /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_raw |
| KernelVersion | 2.6.35 |
| Contact | linux-iio@vger.kernel.org |
| Description | Channel Y - channel Z에 해당하는 raw(unscaled) differential voltage measurement입니다. Non-differential readings도 별도로 제공되는 경우 이 channel numbers는 물리적으로 대응하는 inputs에 적용됩니다. Differential-only parts에서는 일관된 labeling만 필요합니다. Scale과 offset 적용 뒤의 단위는 millivolts입니다. |
| 항목 | 전문 번역 |
|---|---|
| What | /sys/bus/iio/devices/iio:deviceX/in_altvoltageY_rms_raw |
| KernelVersion | 6.18 |
| Contact | linux-iio@vger.kernel.org |
| Description | Channel Y의 raw(unscaled) Root Mean Square(RMS) voltage measurement입니다. Scale과 offset 적용 뒤의 단위는 millivolts입니다. |
Power measurements와 power factor
178-195| What | 공통 metadata |
|---|---|
| /sys/bus/iio/devices/iio:deviceX/in_powerY_raw | KernelVersion 4.5 / linux-iio@vger.kernel.org |
| /sys/bus/iio/devices/iio:deviceX/in_powerY_active_raw | KernelVersion 4.5 / linux-iio@vger.kernel.org |
| /sys/bus/iio/devices/iio:deviceX/in_powerY_reactive_raw | KernelVersion 4.5 / linux-iio@vger.kernel.org |
| /sys/bus/iio/devices/iio:deviceX/in_powerY_apparent_raw | KernelVersion 4.5 / linux-iio@vger.kernel.org |
Channel Y의 raw power measurement입니다. Scale 적용이나 bias 제거 등을 하지 않은 값입니다. Event codes와 연결할 수 있도록 number는 항상 지정해야 하고 고유해야 합니다. Scale과 offset 적용 뒤의 단위는 milliwatts입니다.
| 항목 | 전문 번역 |
|---|---|
| What | /sys/bus/iio/devices/iio:deviceX/in_powerY_powerfactor |
| KernelVersion | 6.18 |
| Contact | linux-iio@vger.kernel.org |
| Description | Channel Y의 power factor measurement입니다. Power factor는 active power와 apparent power의 비율입니다. 값에는 단위가 없습니다. |
Capacitance raw, differential와 zeropoint
197-232| 항목 | 전문 번역 |
|---|---|
| What | /sys/bus/iio/devices/iio:deviceX/in_capacitanceY_raw |
| KernelVersion | 3.2 |
| Contact | linux-iio@vger.kernel.org |
| Description | Channel Y의 raw capacitance measurement입니다. Scale과 offset 적용 뒤의 단위는 nanofarads입니다. |
| 항목 | 전문 번역 |
|---|---|
| What | /sys/.../iio:deviceX/in_capacitanceY-capacitanceZ_raw |
| KernelVersion | 3.2 |
| Contact | linux-iio@vger.kernel.org |
| Description | Channel Y - channel Z에 해당하는 raw differential capacitance measurement입니다. Non-differential readings도 별도로 제공되는 경우 이 channel numbers는 물리적으로 대응하는 inputs에 적용됩니다. Differential-only parts에서는 일관된 labeling만 필요합니다. Scale과 offset 적용 뒤의 단위는 nanofarads입니다. |
| 항목 | 전문 번역 |
|---|---|
| What | /sys/.../iio:deviceX/in_capacitanceY-capacitanceZ_zeropoint |
| KernelVersion | 6.1 |
| Contact | linux-iio@vger.kernel.org |
| Description | Differential channels에서 두 inputs에 동일하게 적용하는 offset입니다. Reading은 두 inputs의 차이이므로 userspace는 이 값을 _offset과 달리 _raw reading에 적용해서는 안 됩니다. 또한 calibbias와 달리 _zeropoint의 효과가 differential pair의 두 inputs에서 상쇄되므로 측정된 differential value에 영향을 주지 않습니다. 목적은 differential 측정 전에 개별 signals를 device의 measurement range 안으로 가져오는 것입니다. Differential pair를 이루는 별도 inputs를 _raw units로 graph에 그렸을 때 이 값이 measurement axis의 zero point가 나타내는 값이므로 이런 이름을 사용합니다. _raw와 같은 scaling으로 표현합니다. |
Temperature raw와 scaled input
234-256| What | 공통 metadata |
|---|---|
| /sys/bus/iio/devices/iio:deviceX/in_temp_raw | KernelVersion 2.6.35 / linux-iio@vger.kernel.org |
| /sys/bus/iio/devices/iio:deviceX/in_tempY_raw | KernelVersion 2.6.35 / linux-iio@vger.kernel.org |
| /sys/bus/iio/devices/iio:deviceX/in_temp_x_raw | KernelVersion 2.6.35 / linux-iio@vger.kernel.org |
| /sys/bus/iio/devices/iio:deviceX/in_temp_y_raw | KernelVersion 2.6.35 / linux-iio@vger.kernel.org |
| /sys/bus/iio/devices/iio:deviceX/in_temp_ambient_raw | KernelVersion 2.6.35 / linux-iio@vger.kernel.org |
| /sys/bus/iio/devices/iio:deviceX/in_temp_object_raw | KernelVersion 2.6.35 / linux-iio@vger.kernel.org |
Raw temperature measurement입니다. Scale 적용이나 bias 제거 등을 하지 않은 값입니다. Axis가 지정되면 일반적으로 temperature sensor가 compound device의 특정 부분(예: gyroscope axis)과 연결되었음을 뜻합니다. Ambient와 object modifiers는 contactless measurements에서 ambient(reference) temperature와 distant-object temperature를 구분합니다. Scale과 offset 적용 뒤의 단위는 milli-degrees Celsius입니다.
| What | KernelVersion / Contact | 전문 번역 |
|---|---|---|
| /sys/bus/iio/devices/iio:deviceX/in_tempY_input | 2.6.38 / linux-iio@vger.kernel.org | Milli-degrees Celsius 단위의 scaled temperature measurement입니다. |
| /sys/bus/iio/devices/iio:deviceX/in_temp_input | 2.6.38 / linux-iio@vger.kernel.org | Milli-degrees Celsius 단위의 scaled temperature measurement입니다. |
Acceleration, gravity와 delta measurements
258-315| What | KernelVersion / Contact | 전문 번역 |
|---|---|---|
| /sys/bus/iio/devices/iio:deviceX/in_accel_x_raw /sys/bus/iio/devices/iio:deviceX/in_accel_y_raw /sys/bus/iio/devices/iio:deviceX/in_accel_z_raw | 2.6.35 / linux-iio@vger.kernel.org | x, y 또는 z 방향 acceleration입니다. 축은 임의로 지정할 수 있지만 device의 다른 같은 종류 assignment와 일치해야 합니다. voltageY와 동등한 모든 parameters를 갖습니다. Scale과 offset 적용 뒤의 단위는 m/s^2입니다. |
| /sys/bus/iio/devices/iio:deviceX/in_accel_linear_x_raw /sys/bus/iio/devices/iio:deviceX/in_accel_linear_y_raw /sys/bus/iio/devices/iio:deviceX/in_accel_linear_z_raw | 6.1 / linux-iio@vger.kernel.org | in_accel_X_raw attributes와 같지만 gravity로 인한 acceleration을 뺀 값입니다. |
| /sys/bus/iio/devices/iio:deviceX/in_gravity_x_raw /sys/bus/iio/devices/iio:deviceX/in_gravity_y_raw /sys/bus/iio/devices/iio:deviceX/in_gravity_z_raw | 4.11 / linux-iio@vger.kernel.org | x, y 또는 z 방향 gravity입니다. 축은 임의로 지정할 수 있지만 device의 다른 같은 종류 assignment와 일치해야 합니다. Scale과 offset 적용 뒤의 단위는 m/s^2입니다. |
| /sys/bus/iio/devices/iio:deviceX/in_deltaangl_x_raw /sys/bus/iio/devices/iio:deviceX/in_deltaangl_y_raw /sys/bus/iio/devices/iio:deviceX/in_deltaangl_z_raw | 6.5 / linux-iio@vger.kernel.org | x, y 또는 z에서 연속한 두 samples 사이의 angular displacement입니다. 축은 임의로 지정할 수 있지만 device의 다른 같은 종류 assignment와 일치해야 합니다. 원하는 기간의 total angular displacement를 계산하려면 application이 그 기간에 얻은 delta-angle samples를 합해야 합니다. Scale과 offset 적용 뒤의 단위는 radians입니다. |
| /sys/bus/iio/devices/iio:deviceX/in_deltavelocity_x_raw /sys/bus/iio/devices/iio:deviceX/in_deltavelocity_y_raw /sys/bus/iio/devices/iio:deviceX/in_deltavelocity_z_raw | 6.5 / linux-iio@vger.kernel.org | x, y 또는 z에서 연속한 두 samples 사이의 linear velocity change입니다. 축은 임의로 지정할 수 있지만 device의 다른 같은 종류 assignment와 일치해야 합니다. 원하는 기간의 total linear velocity change를 계산하려면 application이 그 기간에 얻은 delta-velocity samples를 합해야 합니다. Scale과 offset 적용 뒤의 단위는 meters per second입니다. |
Angle, position, angular velocity, inclination과 magnetic field
317-366| What | KernelVersion / Contact | 전문 번역 |
|---|---|---|
| /sys/bus/iio/devices/iio:deviceX/in_angl_raw /sys/bus/iio/devices/iio:deviceX/in_anglY_raw | 4.17 / linux-iio@vger.kernel.org | Rotation angle입니다. Scale과 offset 적용 뒤의 단위는 radians입니다. |
| /sys/bus/iio/devices/iio:deviceX/in_positionrelative_x_raw /sys/bus/iio/devices/iio:deviceX/in_positionrelative_y_raw | 4.19 / linux-iio@vger.kernel.org | Pad의 x 또는 y 방향 relative position입니다. 축은 임의로 지정할 수 있지만 device의 다른 같은 종류 assignment와 일치해야 합니다. Scale과 offset 적용 뒤의 단위는 두 방향 모두 pad size에 대한 milli-percent입니다. Consumer가 calibration해야 합니다. |
| /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_raw /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_raw /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_raw | 2.6.35 / linux-iio@vger.kernel.org | x, y 또는 z axis에 대한 angular velocity입니다. 축은 임의로 지정할 수 있습니다. voltageY와 동등한 모든 parameters를 갖습니다. Scale과 offset 적용 뒤의 단위는 radians per second입니다. |
| /sys/bus/iio/devices/iio:deviceX/in_incli_x_raw /sys/bus/iio/devices/iio:deviceX/in_incli_y_raw /sys/bus/iio/devices/iio:deviceX/in_incli_z_raw | 2.6.35 / linux-iio@vger.kernel.org | x, y 또는 z axis에 대한 inclination raw reading입니다. 축은 임의로 지정할 수 있습니다. Offset과 scale을 적용하여 degrees로 변환합니다. |
| /sys/bus/iio/devices/iio:deviceX/in_magn_x_raw /sys/bus/iio/devices/iio:deviceX/in_magn_y_raw /sys/bus/iio/devices/iio:deviceX/in_magn_z_raw | 2.6.35 / linux-iio@vger.kernel.org | x, y 또는 z axis를 따르는 magnetic field입니다. 축은 임의로 지정할 수 있습니다. Offset을 적용한 뒤 scale을 적용하여 Gauss로 변환합니다. |
Peak, trough와 squared-magnitude peak
368-394| What | KernelVersion / Contact | 전문 번역 |
|---|---|---|
| /sys/bus/iio/devices/iio:deviceX/in_accel_x_peak_raw /sys/bus/iio/devices/iio:deviceX/in_accel_y_peak_raw /sys/bus/iio/devices/iio:deviceX/in_accel_z_peak_raw /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_peak_raw /sys/bus/iio/devices/iio:deviceX/in_temp_peak_raw | 2.6.36 / linux-iio@vger.kernel.org | 특정 reset condition 이후의 highest value입니다. 이 attributes로 해당 값에 접근하며, 그 밖의 면에서는 <type>Y[_name]_raw attributes와 직접적으로 동등합니다. |
| /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_trough_raw /sys/bus/iio/devices/iio:deviceX/in_temp_trough_raw | 6.7 / linux-iio@vger.kernel.org | 특정 reset condition 이후의 lowest value입니다. 이 attributes로 해당 값에 접근하며, 그 밖의 면에서는 <type>Y[_name]_raw attributes와 직접적으로 동등합니다. |
| /sys/bus/iio/devices/iio:deviceX/in_accel_xyz_squared_peak_raw | 2.6.36 / linux-iio@vger.kernel.org | 지정한 directions의 underlying values에 대한 sum-squared magnitude를 기반으로 계산한 peak value입니다. |
Pressure, humidity와 averaged raw values
396-430| What | KernelVersion / Contact | 전문 번역 |
|---|---|---|
| /sys/bus/iio/devices/iio:deviceX/in_pressureY_raw /sys/bus/iio/devices/iio:deviceX/in_pressure_raw | 3.8 / linux-iio@vger.kernel.org | Channel Y의 raw pressure measurement입니다. Scale과 offset 적용 뒤의 단위는 kilopascal입니다. |
| /sys/bus/iio/devices/iio:deviceX/in_pressureY_input /sys/bus/iio/devices/iio:deviceX/in_pressure_input | 3.8 / linux-iio@vger.kernel.org | Channel Y의 scaled pressure measurement이며 단위는 kilopascal입니다. |
| /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_raw | 3.14 / linux-iio@vger.kernel.org | Air의 raw humidity measurement입니다. Scale과 offset 적용 뒤의 단위는 milli-percent입니다. |
| /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_input | 3.14 / linux-iio@vger.kernel.org | Milli-percent 단위의 scaled humidity measurement입니다. |
| /sys/bus/iio/devices/iio:deviceX/in_Y_mean_raw | 3.5 / linux-iio@vger.kernel.org | Channel Y에서 얻은 averaged raw measurement입니다. Averaging에 사용하는 values 수는 device-specific입니다. 일반 raw values의 conversion rules가 averaged raw values에도 적용됩니다. |
Raw-value offsets
432-468/sys/bus/iio/devices/iio:deviceX/in_accel_offset
/sys/bus/iio/devices/iio:deviceX/in_accel_x_offset
/sys/bus/iio/devices/iio:deviceX/in_accel_y_offset
/sys/bus/iio/devices/iio:deviceX/in_accel_z_offset
/sys/bus/iio/devices/iio:deviceX/in_altvoltage_q_offset
/sys/bus/iio/devices/iio:deviceX/in_altvoltage_i_offset
/sys/bus/iio/devices/iio:deviceX/in_voltageY_offset
/sys/bus/iio/devices/iio:deviceX/in_voltage_offset
/sys/bus/iio/devices/iio:deviceX/in_voltageY_i_offset
/sys/bus/iio/devices/iio:deviceX/in_voltageY_q_offset
/sys/bus/iio/devices/iio:deviceX/in_currentY_offset
/sys/bus/iio/devices/iio:deviceX/in_current_offset
/sys/bus/iio/devices/iio:deviceX/in_tempY_offset
/sys/bus/iio/devices/iio:deviceX/in_temp_offset
/sys/bus/iio/devices/iio:deviceX/in_pressureY_offset
/sys/bus/iio/devices/iio:deviceX/in_pressure_offset
/sys/bus/iio/devices/iio:deviceX/in_humidityrelative_offset
/sys/bus/iio/devices/iio:deviceX/in_magn_offset
/sys/bus/iio/devices/iio:deviceX/in_rot_offset
/sys/bus/iio/devices/iio:deviceX/in_angl_offset
/sys/bus/iio/devices/iio:deviceX/in_capacitanceY_offsetKernelVersion은 2.6.35, Contact는 linux-iio@vger.kernel.org입니다. Device에서 값을 아는 경우 <type> documentation이 지정한 단위의 값을 얻기 위해 <type>[Y]_raw에 더한 뒤 <type>[Y]_scale로 scaling할 offset입니다. Offset이 항상 0이거나 알 수 없으면 존재하지 않습니다. Y 또는 axis <x|y|z>가 없으면 같은 <type>의 모든 input channels에 적용됩니다. Device가 variable offset을 적용할 수 있으면 writable일 수 있습니다. 이는 part instances 사이의 variation을 보정하기 위해 device 또는 driver가 내부 적용하고 보통 hardware calibration procedure로 조정하는 calibbias와 다릅니다. Calibbias는 내부 적용되고 offset은 userspace가 _raw output에 적용합니다.
Raw-value scales
470-519/sys/bus/iio/devices/iio:deviceX/in_voltageY_scale
/sys/bus/iio/devices/iio:deviceX/in_voltageY_q_scale
/sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_scale
/sys/bus/iio/devices/iio:deviceX/in_voltage_scale
/sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_scale
/sys/bus/iio/devices/iio:deviceX/out_voltageY_scale
/sys/bus/iio/devices/iio:deviceX/out_altvoltageY_scale
/sys/bus/iio/devices/iio:deviceX/in_currentY_scale
/sys/bus/iio/devices/iio:deviceX/in_currentY_supply_scale
/sys/bus/iio/devices/iio:deviceX/in_current_scale
/sys/bus/iio/devices/iio:deviceX/in_current_q_scale
/sys/bus/iio/devices/iio:deviceX/in_accel_scale
/sys/bus/iio/devices/iio:deviceX/in_accel_peak_scale
/sys/bus/iio/devices/iio:deviceX/in_anglvel_scale
/sys/bus/iio/devices/iio:deviceX/in_energy_scale
/sys/bus/iio/devices/iio:deviceX/in_distance_scale
/sys/bus/iio/devices/iio:deviceX/in_magn_scale
/sys/bus/iio/devices/iio:deviceX/in_magn_x_scale
/sys/bus/iio/devices/iio:deviceX/in_magn_y_scale
/sys/bus/iio/devices/iio:deviceX/in_magn_z_scale
/sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_scale
/sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_scale
/sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_scale
/sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_scale
/sys/bus/iio/devices/iio:deviceX/in_pressureY_scale
/sys/bus/iio/devices/iio:deviceX/in_pressure_scale
/sys/bus/iio/devices/iio:deviceX/in_humidityrelative_scale
/sys/bus/iio/devices/iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_scale
/sys/bus/iio/devices/iio:deviceX/in_illuminance_scale
/sys/bus/iio/devices/iio:deviceX/in_countY_scale
/sys/bus/iio/devices/iio:deviceX/in_deltaangl_scale
/sys/bus/iio/devices/iio:deviceX/in_deltavelocity_scale
/sys/bus/iio/devices/iio:deviceX/in_angl_scale
/sys/bus/iio/devices/iio:deviceX/in_intensity_x_scale
/sys/bus/iio/devices/iio:deviceX/in_intensity_y_scale
/sys/bus/iio/devices/iio:deviceX/in_intensity_z_scale
/sys/bus/iio/devices/iio:deviceX/in_intensity_red_scale
/sys/bus/iio/devices/iio:deviceX/in_intensity_green_scale
/sys/bus/iio/devices/iio:deviceX/in_intensity_blue_scale
/sys/bus/iio/devices/iio:deviceX/in_concentration_co2_scaleKernelVersion은 2.6.35, Contact는 linux-iio@vger.kernel.org입니다. Device에서 값을 아는 경우 <type>Y[_name]_raw에 <type>[Y][_name]_offset을 더한 뒤 적용하여 <type>Y[_name]_raw documentation이 지정한 단위의 measured value를 얻는 scale입니다. 모든 input channels가 공유하면 Y와 <x|y|z>가 없고 값 이름은 <type>[Y][_name]_scale입니다. Peak modifier가 있으면 이 값을 <type>Y[_name]_peak_raw values에 적용합니다.
Hardware calibration bias와 available values
521-566/sys/bus/iio/devices/iio:deviceX/in_accel_x_calibbias
/sys/bus/iio/devices/iio:deviceX/in_accel_y_calibbias
/sys/bus/iio/devices/iio:deviceX/in_accel_z_calibbias
/sys/bus/iio/devices/iio:deviceX/in_altvoltageY_i_calibbias
/sys/bus/iio/devices/iio:deviceX/in_altvoltageY_q_calibbias
/sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibbias
/sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibbias
/sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibbias
/sys/bus/iio/devices/iio:deviceX/in_capacitance_calibbias
/sys/bus/iio/devices/iio:deviceX/in_illuminance_calibbias
/sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibbias
/sys/bus/iio/devices/iio:deviceX/in_intensityY_calibbias
/sys/bus/iio/devices/iio:deviceX/in_magn_x_calibbias
/sys/bus/iio/devices/iio:deviceX/in_magn_y_calibbias
/sys/bus/iio/devices/iio:deviceX/in_magn_z_calibbias
/sys/bus/iio/devices/iio:deviceX/in_pressure_calibbias
/sys/bus/iio/devices/iio:deviceX/in_pressureY_calibbias
/sys/bus/iio/devices/iio:deviceX/in_proximity_calibbias
/sys/bus/iio/devices/iio:deviceX/in_proximity0_calibbias
/sys/bus/iio/devices/iio:deviceX/in_resistance_calibbias
/sys/bus/iio/devices/iio:deviceX/in_temp_calibbias
/sys/bus/iio/devices/iio:deviceX/in_voltageY_calibbias
/sys/bus/iio/devices/iio:deviceX/out_currentY_calibbias
/sys/bus/iio/devices/iio:deviceX/out_voltageY_calibbiasKernelVersion은 2.6.35, Contact는 linux-iio@vger.kernel.org입니다. Production inaccuracies를 보정한다고 가정하는 hardware-applied calibration offset입니다. icm42600에서는 값이 실제 physical offsets이며 accelerometer는 m/s^2, gyroscope는 rad/s의 SI units로 표현됩니다.
/sys/bus/iio/devices/iio:deviceX/in_accel_calibbias_available
/sys/bus/iio/devices/iio:deviceX/in_anglvel_calibbias_available
/sys/bus/iio/devices/iio:deviceX/in_temp_calibbias_available
/sys/bus/iio/devices/iio:deviceX/in_proximity_calibbias_available
/sys/bus/iio/devices/iio:deviceX/in_voltageY_calibbias_available
/sys/bus/iio/devices/iio:deviceX/out_voltageY_calibbias_availableKernelVersion은 5.8, Contact는 linux-iio@vger.kernel.org입니다. 사용할 수 있는 calibbias values입니다. "0 2 4 6 8" 같은 작은 discrete 값 집합 또는 "[min step max]" range로 표현할 수 있습니다.
Per-channel conversion delay
568-590| 항목 | 전문 번역 |
|---|---|
| What | /sys/bus/iio/devices/iio:deviceX/in_voltageY_convdelay |
| KernelVersion | 6.17 |
| Contact | linux-iio@vger.kernel.org |
| Description | 모든 channels가 공유하는 common reference point부터 conversion 시작까지의 delay입니다. Simultaneous-sampling ADC에 신호를 공급하는 external filters가 유발한 delay variation을 보정하는 데 사용하면 writable일 수 있습니다. 예를 들어 ad7606 ADC series에서 이 값은 선택적 external filtering circuit이 유발한 delay를 보정하는, seconds 단위 configurable time delay입니다. |
| 항목 | 전문 번역 |
|---|---|
| What | /sys/bus/iio/devices/iio:deviceX/in_voltageY_convdelay_available |
| KernelVersion | 6.16 |
| Contact | linux-iio@vger.kernel.org |
| Description | 사용할 수 있는 convdelay values이며 "[min step max]" range로 표현할 수 있습니다. 모든 channels가 공유하면 <type>_convdelay_available을 사용합니다. |
Hardware calibration scale와 available values
592-635/sys/bus/iio/devices/iio:deviceX/in_accel_x_calibscale
/sys/bus/iio/devices/iio:deviceX/in_accel_y_calibscale
/sys/bus/iio/devices/iio:deviceX/in_accel_z_calibscale
/sys/bus/iio/devices/iio:deviceX/in_altvoltage_calibscale
/sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibscale
/sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibscale
/sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibscale
/sys/bus/iio/devices/iio:deviceX/in_capacitance_calibscale
/sys/bus/iio/devices/iio:deviceX/in_illuminance_calibscale
/sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibscale
/sys/bus/iio/devices/iio:deviceX/in_intensity_both_calibscale
/sys/bus/iio/devices/iio:deviceX/in_intensity_calibscale
/sys/bus/iio/devices/iio:deviceX/in_intensity_ir_calibscale
/sys/bus/iio/devices/iio:deviceX/in_magn_x_calibscale
/sys/bus/iio/devices/iio:deviceX/in_magn_y_calibscale
/sys/bus/iio/devices/iio:deviceX/in_magn_z_calibscale
/sys/bus/iio/devices/iio:deviceX/in_pressure_calibscale
/sys/bus/iio/devices/iio:deviceX/in_pressureY_calibscale
/sys/bus/iio/devices/iio:deviceX/in_proximity0_calibscale
/sys/bus/iio/devices/iio:deviceX/in_voltage_calibscale
/sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale
/sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_calibscale
/sys/bus/iio/devices/iio:deviceX/out_currentY_calibscale
/sys/bus/iio/devices/iio:deviceX/out_voltageY_calibscaleKernelVersion은 2.6.35, Contact는 linux-iio@vger.kernel.org입니다. Production inaccuracies를 보정한다고 가정하는 hardware-applied calibration scale factor입니다. 모든 channels가 공유하면 <type>_calibscale을 사용합니다.
/sys/bus/iio/devices/iio:deviceX/in_illuminanceY_calibscale_available
/sys/bus/iio/devices/iio:deviceX/in_intensityY_calibscale_available
/sys/bus/iio/devices/iio:deviceX/in_proximityY_calibscale_available
/sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale_availableKernelVersion은 4.8, Contact는 linux-iio@vger.kernel.org입니다. 사용할 수 있는 calibscale values입니다. "1 8 16" 같은 작은 discrete 값 집합 또는 "[min step max]" range로 표현할 수 있습니다. 모든 channels가 공유하면 <type>_calibscale_available을 사용합니다.
Pedometer user calibration metadata
637-673/sys/bus/iio/devices/iio:deviceX/in_activity_calibgender
/sys/bus/iio/devices/iio:deviceX/in_energy_calibgender
/sys/bus/iio/devices/iio:deviceX/in_distance_calibgender
/sys/bus/iio/devices/iio:deviceX/in_velocity_calibgenderKernelVersion은 4.0, Contact는 linux-iio@vger.kernel.org입니다. 일부 pedometers가 stride length, distance, speed와 activity type을 계산하는 데 사용하는 사용자 gender(예: male, female)입니다.
/sys/bus/iio/devices/iio:deviceX/in_activity_calibgender_available
/sys/bus/iio/devices/iio:deviceX/in_energy_calibgender_available
/sys/bus/iio/devices/iio:deviceX/in_distance_calibgender_available
/sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender_availableKernelVersion은 4.0, Contact는 linux-iio@vger.kernel.org입니다. 사용할 수 있는 모든 gender values(예: male, female)를 나열합니다.
/sys/bus/iio/devices/iio:deviceX/in_activity_calibheight
/sys/bus/iio/devices/iio:deviceX/in_energy_calibheight
/sys/bus/iio/devices/iio:deviceX/in_distance_calibheight
/sys/bus/iio/devices/iio:deviceX/in_velocity_calibheightKernelVersion은 3.19, Contact는 linux-iio@vger.kernel.org입니다. 일부 pedometers가 stride length, distance, speed와 activity type을 계산하는 데 사용하는 사용자 height이며 단위는 meters입니다.
| 항목 | 전문 번역 |
|---|---|
| What | /sys/bus/iio/devices/iio:deviceX/in_energy_calibweight |
| KernelVersion | 4.0 |
| Contact | linux-iio@vger.kernel.org |
| Description | kg 단위의 사용자 weight입니다. 일부 pedometers가 사용자가 소모한 calories를 계산하는 데 필요합니다. |
Available scale values
675-694/sys/bus/iio/devices/iio:deviceX/in_accel_scale_available
/sys/.../iio:deviceX/in_anglvel_scale_available
/sys/.../iio:deviceX/in_magn_scale_available
/sys/.../iio:deviceX/in_illuminance_scale_available
/sys/.../iio:deviceX/in_intensity_scale_available
/sys/.../iio:deviceX/in_proximity_scale_available
/sys/.../iio:deviceX/in_voltageY_scale_available
/sys/.../iio:deviceX/in_voltage-voltage_scale_available
/sys/.../iio:deviceX/out_voltageY_scale_available
/sys/.../iio:deviceX/out_altvoltageY_scale_available
/sys/.../iio:deviceX/in_capacitance_scale_available
/sys/.../iio:deviceX/in_pressure_scale_available
/sys/.../iio:deviceX/in_pressureY_scale_availableKernelVersion은 2.6.35, Contact는 linux-iio@vger.kernel.org입니다. Discrete scale values 집합을 사용할 수 있으면 이 attribute에 나열합니다. Illuminance와 달리 intensity에 intensity_scale을 곱해도 표준화된 단위의 값이 되지는 않습니다.
Hardware-applied gain
696-714/sys/bus/iio/devices/iio:deviceX/out_voltageY_hardwaregain
/sys/bus/iio/devices/iio:deviceX/in_intensity_hardwaregain
/sys/bus/iio/devices/iio:deviceX/in_intensity_red_hardwaregain
/sys/bus/iio/devices/iio:deviceX/in_intensity_green_hardwaregain
/sys/bus/iio/devices/iio:deviceX/in_intensity_blue_hardwaregain
/sys/bus/iio/devices/iio:deviceX/in_intensity_clear_hardwaregain
/sys/bus/iio/devices/iio:deviceX/in_illuminance_hardwaregainKernelVersion은 2.6.35, Contact는 linux-iio@vger.kernel.org입니다. Hardware가 적용하는 gain factor입니다. 모든 channels가 공유하면 <type>_hardwaregain을 사용합니다.
| 항목 | 전문 번역 |
|---|---|
| What | /sys/bus/iio/devices/iio:deviceX/in_intensity_hardwaregain_available |
| KernelVersion | 5.10 |
| Contact | linux-iio@vger.kernel.org |
| Description | 사용할 수 있는 모든 hardware-applied gain factors를 나열합니다. 모든 channels가 공유합니다. |
Low-pass와 high-pass 3dB frequencies
716-734/sys/.../in_accel_filter_low_pass_3db_frequency
/sys/.../in_magn_filter_low_pass_3db_frequency
/sys/.../in_anglvel_filter_low_pass_3db_frequencyKernelVersion은 3.2, Contact는 linux-iio@vger.kernel.org입니다. Underlying data channel에 알려졌거나 제어 가능한 low-pass filter를 적용하면 이 parameter가 filter의 3dB frequency를 Hz로 제공합니다.
/sys/.../in_accel_filter_high_pass_3db_frequency
/sys/.../in_anglvel_filter_high_pass_3db_frequency
/sys/.../in_magn_filter_high_pass_3db_frequencyKernelVersion은 4.2, Contact는 linux-iio@vger.kernel.org입니다. Underlying data channel에 알려졌거나 제어 가능한 high-pass filter를 적용하면 이 parameter가 filter의 3dB frequency를 Hz로 제공합니다.
Single-channel과 aggregate output raw values
736-756/sys/bus/iio/devices/iio:deviceX/out_voltageY_raw
/sys/bus/iio/devices/iio:deviceX/out_altvoltageY_rawKernelVersion은 2.6.37, Contact는 linux-iio@vger.kernel.org입니다. Channel Y의 raw output voltage이며 unscaled이고 bias 등을 적용하지 않은 값입니다. Output이 하나의 channel에 대응하면 number를 항상 지정해야 하고 고유해야 합니다. DAC 같은 devices는 일반적으로 out_voltage를 사용하고, DDS나 PLL처럼 continuous frequency를 생성하는 device는 out_altvoltage를 사용해야 합니다.
/sys/bus/iio/devices/iio:deviceX/out_voltageY&Z_raw
/sys/bus/iio/devices/iio:deviceX/out_altvoltageY&Z_rawKernelVersion은 2.6.37, Contact는 linux-iio@vger.kernel.org입니다. Channel Y, channel Z 등의 aggregate에 대한 raw output voltage이며 unscaled이고 bias 등을 적용하지 않은 값입니다. 하나의 output이 여러 channels의 값을 동시에 설정하는 경우 이 interface를 사용할 수 있습니다.
Output powerdown mode와 enable
758-805/sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown_mode
/sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown_mode
/sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown_mode
/sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown_modeKernelVersion은 2.6.38, Contact는 linux-iio@vger.kernel.org입니다. Output powerdown mode를 지정합니다. DAC output stage는 amplifier에서 disconnect됩니다.
| Mode | 전문 번역 |
|---|---|
| 1kohm_to_gnd | 1kOhm resistor를 통해 ground에 연결합니다. |
| 2.5kohm_to_gnd | 2.5kOhm resistor를 통해 ground에 연결합니다. |
| 6kohm_to_gnd | 6kOhm resistor를 통해 ground에 연결합니다. |
| 7.7kohm_to_gnd | 7.7kOhm resistor를 통해 ground에 연결합니다. |
| 20kohm_to_gnd | 20kOhm resistor를 통해 ground에 연결합니다. |
| 32kohm_to_gnd | 32kOhm resistor를 통해 ground에 연결합니다. |
| 42kohm_to_gnd | 42kOhm resistor를 통해 ground에 연결합니다. |
| 90kohm_to_gnd | 90kOhm resistor를 통해 ground에 연결합니다. |
| 100kohm_to_gnd | 100kOhm resistor를 통해 ground에 연결합니다. |
| 125kohm_to_gnd | 125kOhm resistor를 통해 ground에 연결합니다. |
| 500kohm_to_gnd | 500kOhm resistor를 통해 ground에 연결합니다. |
| 640kohm_to_gnd | 640kOhm resistor를 통해 ground에 연결합니다. |
| three_state | Floating 상태로 둡니다. |
사용할 수 있는 output powerdown options 목록은 outX_powerdown_mode_available을 읽습니다. Y가 없으면 mode를 모든 outputs가 공유합니다.
/sys/.../iio:deviceX/out_voltageY_powerdown_mode_available
/sys/.../iio:deviceX/out_voltage_powerdown_mode_available
/sys/.../iio:deviceX/out_altvoltageY_powerdown_mode_available
/sys/.../iio:deviceX/out_altvoltage_powerdown_mode_availableKernelVersion은 2.6.38, Contact는 linux-iio@vger.kernel.org입니다. 사용할 수 있는 모든 output powerdown modes를 나열합니다. Y가 없으면 mode를 모든 outputs가 공유합니다.
/sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown
/sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown
/sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown
/sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdownKernelVersion은 2.6.38, Contact는 linux-iio@vger.kernel.org입니다. 1을 쓰면 output Y가 corresponding outY_powerdown_mode가 지정한 powerdown mode로 들어가고 DAC output stage가 amplifier에서 disconnect됩니다. 값을 clear하면 normal operation으로 돌아갑니다. 모든 outputs를 함께 제어하면 Y를 생략할 수 있습니다.
Alternate-voltage output frequency
807-832| 항목 | 전문 번역 |
|---|---|
| What | /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency |
| KernelVersion | 3.4.0 |
| Contact | linux-iio@vger.kernel.org |
| Description | Channel Y의 output frequency이며 단위는 Hz입니다. Output이 single channel에 대응하면 number를 항상 지정해야 하고 고유해야 합니다. |
| ADF4371 channel | 전문 번역 |
|---|---|
| VCO | Integrated VCO의 fundamental output frequency 범위는 4000000000 Hz에서 8000000000 Hz입니다. |
| out_altvoltage0_frequency | 1, 2, 4, 8, 16 또는 32로 divide하는 circuit이 62500000 Hz에서 8000000000 Hz까지의 frequencies를 생성합니다. |
| out_altvoltage1_frequency | Channel 0 frequency를 복제합니다. |
| out_altvoltage2_frequency | Frequency doubler가 8000000000 Hz에서 16000000000 Hz까지의 frequencies를 생성합니다. |
| out_altvoltage3_frequency | Frequency quadrupler가 16000000000 Hz에서 32000000000 Hz까지의 frequencies를 생성합니다. |
어느 channel에 쓰더라도 VCO fundamental output frequency를 변경하므로 다른 모든 channels의 frequency에 영향을 줍니다.
Signal phase와 output current
834-857/sys/bus/iio/devices/iio:deviceX/in_altvoltageY_i_phase
/sys/bus/iio/devices/iio:deviceX/in_altvoltageY_q_phase
/sys/bus/iio/devices/iio:deviceX/out_altvoltageY_phase
/sys/bus/iio/devices/iio:deviceX/out_altvoltageY_i_phase
/sys/bus/iio/devices/iio:deviceX/out_altvoltageY_q_phaseKernelVersion은 3.4.0, Contact는 linux-iio@vger.kernel.org입니다. Device X의 다른 frequency/clock output(out_altvoltageZ)을 기준으로 한 frequency/clock output Y(out_altvoltageY)의 phase이며 단위는 radians입니다. Output이 single channel에 대응하면 number를 항상 지정해야 하고 고유해야 합니다.
| 항목 | 전문 번역 |
|---|---|
| What | /sys/bus/iio/devices/iio:deviceX/out_currentY_raw |
| Date | 2012년 5월 |
| KernelVersion | 3.5 |
| Contact | Johan Hovold <jhovold@gmail.com> |
| Description | Channel Y의 output current를 설정하거나 가져옵니다. Scale과 offset 적용 뒤의 단위는 milliamps입니다. 일부 devices에서는 current channels를 다른 type의 measurement에 사용하는 elements에 공급할 current를 지정하는 데 사용합니다. 예를 들면 LED currents입니다. |
Hardware event configuration
859-864| 항목 | 전문 번역 |
|---|---|
| What | /sys/bus/iio/devices/iio:deviceX/events |
| KernelVersion | 2.6.35 |
| Contact | linux-iio@vger.kernel.org |
| Description | Hardware가 생성한 events 가운데 어느 것을 userspace에 전달할지 구성합니다. |
Threshold event enable controls
866-921/sys/.../iio:deviceX/events/in_accel_x_thresh_rising_en
/sys/.../iio:deviceX/events/in_accel_x_thresh_falling_en
/sys/.../iio:deviceX/events/in_accel_y_thresh_rising_en
/sys/.../iio:deviceX/events/in_accel_y_thresh_falling_en
/sys/.../iio:deviceX/events/in_accel_z_thresh_rising_en
/sys/.../iio:deviceX/events/in_accel_z_thresh_falling_en
/sys/.../iio:deviceX/events/in_anglvel_x_thresh_rising_en
/sys/.../iio:deviceX/events/in_anglvel_x_thresh_falling_en
/sys/.../iio:deviceX/events/in_anglvel_y_thresh_rising_en
/sys/.../iio:deviceX/events/in_anglvel_y_thresh_falling_en
/sys/.../iio:deviceX/events/in_anglvel_z_thresh_rising_en
/sys/.../iio:deviceX/events/in_anglvel_z_thresh_falling_en
/sys/.../iio:deviceX/events/in_magn_x_thresh_rising_en
/sys/.../iio:deviceX/events/in_magn_x_thresh_falling_en
/sys/.../iio:deviceX/events/in_magn_y_thresh_rising_en
/sys/.../iio:deviceX/events/in_magn_y_thresh_falling_en
/sys/.../iio:deviceX/events/in_magn_z_thresh_rising_en
/sys/.../iio:deviceX/events/in_magn_z_thresh_falling_en
/sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_rising_en
/sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_falling_en
/sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_rising_en
/sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_falling_en
/sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_en
/sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_en
/sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_rising_en
/sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_falling_en
/sys/.../iio:deviceX/events/in_voltageY_supply_thresh_rising_en
/sys/.../iio:deviceX/events/in_voltageY_supply_thresh_falling_en
/sys/.../iio:deviceX/events/in_voltageY_thresh_rising_en
/sys/.../iio:deviceX/events/in_voltageY_thresh_falling_en
/sys/.../iio:deviceX/events/in_voltageY_thresh_either_en
/sys/.../iio:deviceX/events/in_tempY_thresh_rising_en
/sys/.../iio:deviceX/events/in_tempY_thresh_falling_en
/sys/.../iio:deviceX/events/in_capacitanceY_thresh_rising_en
/sys/.../iio:deviceX/events/in_capacitanceY_thresh_falling_enKernelVersion은 2.6.37, Contact는 linux-iio@vger.kernel.org입니다. Channel이 지정한 rising 또는 falling 방향으로 threshold를 통과하면 event를 생성합니다. Direction을 지정하지 않으면 device가 하나의 threshold value(예: <type>[Y][_name]_<raw|input>_thresh_value)를 어느 방향으로든 통과할 때 event를 보고하거나, rising과 falling values가 서로 다를 수 있지만 device는 두 thresholds를 함께 enable하거나 둘 다 disable할 수만 있습니다.
Driver는 지원하는 event 수를 p라고 할 때 마지막으로 요청된 p events를 enable 대상으로 간주합니다. p는 정확히 요청한 집합에 따라 달라질 수 있습니다. 의도한 설정인지 확실히 하려면 모든 구성을 마친 뒤 이 attributes의 내용을 확인해야 합니다. Driver는 미래에 특정 event type을 enable할 때 해당 parameters가 일관되고 이전에 enable된 다른 event의 parameters를 쓰지 않도록 parameters를 buffer해야 할 수 있습니다.
Rate-of-change event enable controls
923-976/sys/.../iio:deviceX/events/in_accel_x_roc_rising_en
/sys/.../iio:deviceX/events/in_accel_x_roc_falling_en
/sys/.../iio:deviceX/events/in_accel_y_roc_rising_en
/sys/.../iio:deviceX/events/in_accel_y_roc_falling_en
/sys/.../iio:deviceX/events/in_accel_z_roc_rising_en
/sys/.../iio:deviceX/events/in_accel_z_roc_falling_en
/sys/.../iio:deviceX/events/in_anglvel_x_roc_rising_en
/sys/.../iio:deviceX/events/in_anglvel_x_roc_falling_en
/sys/.../iio:deviceX/events/in_anglvel_y_roc_rising_en
/sys/.../iio:deviceX/events/in_anglvel_y_roc_falling_en
/sys/.../iio:deviceX/events/in_anglvel_z_roc_rising_en
/sys/.../iio:deviceX/events/in_anglvel_z_roc_falling_en
/sys/.../iio:deviceX/events/in_magn_x_roc_rising_en
/sys/.../iio:deviceX/events/in_magn_x_roc_falling_en
/sys/.../iio:deviceX/events/in_magn_y_roc_rising_en
/sys/.../iio:deviceX/events/in_magn_y_roc_falling_en
/sys/.../iio:deviceX/events/in_magn_z_roc_rising_en
/sys/.../iio:deviceX/events/in_magn_z_roc_falling_en
/sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_rising_en
/sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_falling_en
/sys/.../iio:deviceX/events/in_rot_from_north_true_roc_rising_en
/sys/.../iio:deviceX/events/in_rot_from_north_true_roc_falling_en
/sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_rising_en
/sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_falling_en
/sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_rising_en
/sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_falling_en
/sys/.../iio:deviceX/events/in_voltageY_supply_roc_rising_en
/sys/.../iio:deviceX/events/in_voltageY_supply_roc_falling_en
/sys/.../iio:deviceX/events/in_voltageY_roc_rising_en
/sys/.../iio:deviceX/events/in_voltageY_roc_falling_en
/sys/.../iio:deviceX/events/in_tempY_roc_rising_en
/sys/.../iio:deviceX/events/in_tempY_roc_falling_enKernelVersion은 2.6.37, Contact는 linux-iio@vger.kernel.org입니다. Channel의 rate of change, 즉 first differential이 지정한 rising 또는 falling 방향으로 threshold를 통과하면 event를 생성합니다. Direction을 지정하지 않으면 하나의 ROC threshold를 어느 방향으로 통과해도 event를 보고하거나, rising·falling ROC values가 서로 다를 수 있지만 두 rate-of-change thresholds를 함께 enable하거나 둘 다 disable할 수만 있습니다.
Driver는 지원하는 수 p만큼 마지막에 요청된 events를 enable 대상으로 간주하며 p는 요청 집합에 따라 달라질 수 있습니다. 모든 구성을 마친 뒤 attributes를 다시 읽어 설정을 확인해야 합니다. 특정 event type을 나중에 enable할 때 이전 event parameters와 섞이지 않도록 driver가 parameters를 buffer해야 할 수 있습니다.
Adaptive threshold enable과 tracking timeout
978-1002/sys/.../events/in_capacitanceY_adaptive_thresh_rising_en
/sys/.../events/in_capacitanceY_adaptive_thresh_falling_enKernelVersion은 5.13, Contact는 linux-iio@vger.kernel.org입니다. Adaptive thresholds는 일반 fixed thresholds와 비슷하지만 value를 channel 자체의 low-frequency approximation을 제공하는 값으로부터의 offset으로 표현합니다. 따라서 지정한 방향의 rapid change가 tracking value + offset을 넘는지 감지합니다. Tracking value 계산은 device-specific입니다.
/sys/.../in_capacitanceY_adaptive_thresh_rising_timeout
/sys/.../in_capacitanceY_adaptive_thresh_falling_timeoutKernelVersion은 5.11, Contact는 linux-iio@vger.kernel.org입니다. Adaptive thresholds를 사용할 때 tracking signal이 raw signal의 step changes를 너무 느리게 따라갈 수 있습니다. 이 attributes는 slow tracking signal과 raw signal의 차이가 out-of-range 상태로 머물 수 있는 시간을 seconds로 지정합니다. 이 시간이 지나면 tracking signal을 raw signal과 같게 만드는 reset event가 발생하여 slow tracking을 재개하고 adaptive-threshold event detection이 예상대로 동작하게 합니다.
이벤트 임계값
1004-1061/sys/.../events/in_accel_thresh_rising_value
/sys/.../events/in_accel_thresh_falling_value
/sys/.../events/in_accel_x_raw_thresh_rising_value
/sys/.../events/in_accel_x_raw_thresh_falling_value
/sys/.../events/in_accel_y_raw_thresh_rising_value
/sys/.../events/in_accel_y_raw_thresh_falling_value
/sys/.../events/in_accel_z_raw_thresh_rising_value
/sys/.../events/in_accel_z_raw_thresh_falling_value
/sys/.../events/in_anglvel_x_raw_thresh_rising_value
/sys/.../events/in_anglvel_x_raw_thresh_falling_value
/sys/.../events/in_anglvel_y_raw_thresh_rising_value
/sys/.../events/in_anglvel_y_raw_thresh_falling_value
/sys/.../events/in_anglvel_z_raw_thresh_rising_value
/sys/.../events/in_anglvel_z_raw_thresh_falling_value
/sys/.../events/in_magn_x_raw_thresh_rising_value
/sys/.../events/in_magn_x_raw_thresh_falling_value
/sys/.../events/in_magn_y_raw_thresh_rising_value
/sys/.../events/in_magn_y_raw_thresh_falling_value
/sys/.../events/in_magn_z_raw_thresh_rising_value
/sys/.../events/in_magn_z_raw_thresh_falling_value
/sys/.../events/in_rot_from_north_magnetic_raw_thresh_rising_value
/sys/.../events/in_rot_from_north_magnetic_raw_thresh_falling_value
/sys/.../events/in_rot_from_north_true_raw_thresh_rising_value
/sys/.../events/in_rot_from_north_true_raw_thresh_falling_value
/sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_rising_value
/sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_falling_value
/sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_rising_value
/sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_falling_value
/sys/.../events/in_voltageY_supply_raw_thresh_rising_value
/sys/.../events/in_voltageY_supply_raw_thresh_falling_value
/sys/.../events/in_voltageY_raw_thresh_rising_value
/sys/.../events/in_voltageY_raw_thresh_falling_value
/sys/.../events/in_tempY_raw_thresh_rising_value
/sys/.../events/in_tempY_raw_thresh_falling_value
/sys/.../events/in_illuminance0_thresh_falling_value
/sys/.../events/in_illuminance0_thresh_rising_value
/sys/.../events/in_proximity0_thresh_falling_value
/sys/.../events/in_proximity0_thresh_rising_value
/sys/.../events/in_illuminance_thresh_rising_value
/sys/.../events/in_illuminance_thresh_falling_value
/sys/.../events/in_capacitanceY_thresh_rising_value
/sys/.../events/in_capacitanceY_thresh_falling_value
/sys/.../events/in_capacitanceY_thresh_adaptive_rising_value
/sys/.../events/in_capacitanceY_thresh_falling_rising_valueKernelVersion은 2.6.37, Contact는 linux-iio@vger.kernel.org입니다. 이 속성들은 <type>Y[_name]_thresh[_rising|falling]_en으로 활성화한 이벤트에서 장치가 비교할 임계값을 지정합니다.
두 방향에 대한 속성이 따로 존재하지만 이 속성 이름에는 방향이 지정되지 않았다면, 하나의 임계값을 양쪽 방향 모두에 적용합니다. 이름의 raw 또는 input 요소는 값이 장치 원시 단위인지 처리된 단위인지를 나타내며, sysfs 직접 채널 읽기 속성의 _raw 및 _input과 같은 의미입니다.
이벤트 임계값 변환 스케일
1063-1079/sys/.../events/in_accel_scale
/sys/.../events/in_accel_peak_scale
/sys/.../events/in_anglvel_scale
/sys/.../events/in_magn_scale
/sys/.../events/in_rot_from_north_magnetic_scale
/sys/.../events/in_rot_from_north_true_scale
/sys/.../events/in_voltage_scale
/sys/.../events/in_voltage_supply_scale
/sys/.../events/in_temp_scale
/sys/.../events/in_illuminance_scale
/sys/.../events/in_proximity_scaleKernelVersion은 3.21, Contact는 linux-iio@vger.kernel.org입니다. 이벤트 트리거 임계값을 설정할 때 표준 단위를 장치별 단위로 변환하는 계수를 지정합니다.
이벤트 임계값 히스테리시스
1081-1148/sys/.../events/in_accel_x_thresh_rising_hysteresis
/sys/.../events/in_accel_x_thresh_falling_hysteresis
/sys/.../events/in_accel_x_thresh_either_hysteresis
/sys/.../events/in_accel_y_thresh_rising_hysteresis
/sys/.../events/in_accel_y_thresh_falling_hysteresis
/sys/.../events/in_accel_y_thresh_either_hysteresis
/sys/.../events/in_accel_z_thresh_rising_hysteresis
/sys/.../events/in_accel_z_thresh_falling_hysteresis
/sys/.../events/in_accel_z_thresh_either_hysteresis
/sys/.../events/in_anglvel_x_thresh_rising_hysteresis
/sys/.../events/in_anglvel_x_thresh_falling_hysteresis
/sys/.../events/in_anglvel_x_thresh_either_hysteresis
/sys/.../events/in_anglvel_y_thresh_rising_hysteresis
/sys/.../events/in_anglvel_y_thresh_falling_hysteresis
/sys/.../events/in_anglvel_y_thresh_either_hysteresis
/sys/.../events/in_anglvel_z_thresh_rising_hysteresis
/sys/.../events/in_anglvel_z_thresh_falling_hysteresis
/sys/.../events/in_anglvel_z_thresh_either_hysteresis
/sys/.../events/in_magn_x_thresh_rising_hysteresis
/sys/.../events/in_magn_x_thresh_falling_hysteresis
/sys/.../events/in_magn_x_thresh_either_hysteresis
/sys/.../events/in_magn_y_thresh_rising_hysteresis
/sys/.../events/in_magn_y_thresh_falling_hysteresis
/sys/.../events/in_magn_y_thresh_either_hysteresis
/sys/.../events/in_magn_z_thresh_rising_hysteresis
/sys/.../events/in_magn_z_thresh_falling_hysteresis
/sys/.../events/in_magn_z_thresh_either_hysteresis
/sys/.../events/in_rot_from_north_magnetic_thresh_rising_hysteresis
/sys/.../events/in_rot_from_north_magnetic_thresh_falling_hysteresis
/sys/.../events/in_rot_from_north_magnetic_thresh_either_hysteresis
/sys/.../events/in_rot_from_north_true_thresh_rising_hysteresis
/sys/.../events/in_rot_from_north_true_thresh_falling_hysteresis
/sys/.../events/in_rot_from_north_true_thresh_either_hysteresis
/sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_hysteresis
/sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_hysteresis
/sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_either_hysteresis
/sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_hysteresis
/sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_hysteresis
/sys/.../events/in_rot_from_north_true_tilt_comp_thresh_either_hysteresis
/sys/.../events/in_voltageY_thresh_rising_hysteresis
/sys/.../events/in_voltageY_thresh_falling_hysteresis
/sys/.../events/in_voltageY_thresh_either_hysteresis
/sys/.../events/in_tempY_thresh_rising_hysteresis
/sys/.../events/in_tempY_thresh_falling_hysteresis
/sys/.../events/in_tempY_thresh_either_hysteresis
/sys/.../events/in_illuminance0_thresh_falling_hysteresis
/sys/.../events/in_illuminance0_thresh_rising_hysteresis
/sys/.../events/in_illuminance0_thresh_either_hysteresis
/sys/.../events/in_proximity0_thresh_falling_hysteresis
/sys/.../events/in_proximity0_thresh_rising_hysteresis
/sys/.../events/in_proximity0_thresh_either_hysteresisKernelVersion은 3.13, Contact는 linux-iio@vger.kernel.org입니다. 이 속성들은 <type>Y[_name]_thresh[_(rising|falling)]_hysteresis 이벤트에 장치가 적용할 임계값 히스테리시스를 지정합니다. 두 방향의 속성이 따로 있지만 이 속성에 방향이 지정되지 않았다면 하나의 히스테리시스 값을 양쪽 방향 모두에 적용합니다.
Falling 이벤트에서는 이벤트의 _value 속성에 히스테리시스를 더해 정상 상태로 돌아갈 때의 상한 임계값을 구하고, rising 이벤트에서는 _value 속성에서 히스테리시스를 뺍니다. 예를 들어 in_voltage0_raw_thresh_rising_value가 1200이고 in_voltage0_raw_thresh_rising_hysteresis가 50이면, in_voltage0_raw가 1200을 넘을 때 이벤트가 활성화되고 값이 1150 아래로 내려가면 다시 비활성화됩니다.
변화율 이벤트 임계값
1150-1194/sys/.../events/in_accel_x_raw_roc_rising_value
/sys/.../events/in_accel_x_raw_roc_falling_value
/sys/.../events/in_accel_y_raw_roc_rising_value
/sys/.../events/in_accel_y_raw_roc_falling_value
/sys/.../events/in_accel_z_raw_roc_rising_value
/sys/.../events/in_accel_z_raw_roc_falling_value
/sys/.../events/in_anglvel_x_raw_roc_rising_value
/sys/.../events/in_anglvel_x_raw_roc_falling_value
/sys/.../events/in_anglvel_y_raw_roc_rising_value
/sys/.../events/in_anglvel_y_raw_roc_falling_value
/sys/.../events/in_anglvel_z_raw_roc_rising_value
/sys/.../events/in_anglvel_z_raw_roc_falling_value
/sys/.../events/in_magn_x_raw_roc_rising_value
/sys/.../events/in_magn_x_raw_roc_falling_value
/sys/.../events/in_magn_y_raw_roc_rising_value
/sys/.../events/in_magn_y_raw_roc_falling_value
/sys/.../events/in_magn_z_raw_roc_rising_value
/sys/.../events/in_magn_z_raw_roc_falling_value
/sys/.../events/in_rot_from_north_magnetic_raw_roc_rising_value
/sys/.../events/in_rot_from_north_magnetic_raw_roc_falling_value
/sys/.../events/in_rot_from_north_true_raw_roc_rising_value
/sys/.../events/in_rot_from_north_true_raw_roc_falling_value
/sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_rising_value
/sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_falling_value
/sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_rising_value
/sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_falling_value
/sys/.../events/in_voltageY_supply_raw_roc_rising_value
/sys/.../events/in_voltageY_supply_raw_roc_falling_value
/sys/.../events/in_voltageY_raw_roc_rising_value
/sys/.../events/in_voltageY_raw_roc_falling_value
/sys/.../events/in_tempY_raw_roc_rising_value
/sys/.../events/in_tempY_raw_roc_falling_valueKernelVersion은 2.6.37, Contact는 linux-iio@vger.kernel.org입니다. 이 속성들은 <type>[Y][_name]_roc[_rising|falling]_en으로 활성화한 이벤트에서 장치가 비교할 변화율 임계값을 지정합니다.
두 방향에 대한 속성이 따로 존재하지만 이 속성에 방향이 지정되지 않았다면 하나의 임계값을 양쪽 방향 모두에 적용합니다. 이름의 raw 또는 input 요소는 값이 장치 원시 단위인지 처리된 단위인지를 나타내며, sysfs 직접 채널 읽기 속성의 _raw 및 _input과 같은 의미입니다.
이벤트 조건 유지 시간
1196-1277/sys/.../events/in_accel_x_thresh_rising_period
/sys/.../events/in_accel_x_thresh_falling_period
/sys/.../events/in_accel_x_roc_rising_period
/sys/.../events/in_accel_x_roc_falling_period
/sys/.../events/in_accel_y_thresh_rising_period
/sys/.../events/in_accel_y_thresh_falling_period
/sys/.../events/in_accel_y_roc_rising_period
/sys/.../events/in_accel_y_roc_falling_period
/sys/.../events/in_accel_z_thresh_rising_period
/sys/.../events/in_accel_z_thresh_falling_period
/sys/.../events/in_accel_z_roc_rising_period
/sys/.../events/in_accel_z_roc_falling_period
/sys/.../events/in_anglvel_x_thresh_rising_period
/sys/.../events/in_anglvel_x_thresh_falling_period
/sys/.../events/in_anglvel_x_roc_rising_period
/sys/.../events/in_anglvel_x_roc_falling_period
/sys/.../events/in_anglvel_y_thresh_rising_period
/sys/.../events/in_anglvel_y_thresh_falling_period
/sys/.../events/in_anglvel_y_roc_rising_period
/sys/.../events/in_anglvel_y_roc_falling_period
/sys/.../events/in_anglvel_z_thresh_rising_period
/sys/.../events/in_anglvel_z_thresh_falling_period
/sys/.../events/in_anglvel_z_roc_rising_period
/sys/.../events/in_anglvel_z_roc_falling_period
/sys/.../events/in_magn_x_thresh_rising_period
/sys/.../events/in_magn_x_thresh_falling_period
/sys/.../events/in_magn_x_roc_rising_period
/sys/.../events/in_magn_x_roc_falling_period
/sys/.../events/in_magn_y_thresh_rising_period
/sys/.../events/in_magn_y_thresh_falling_period
/sys/.../events/in_magn_y_roc_rising_period
/sys/.../events/in_magn_y_roc_falling_period
/sys/.../events/in_magn_z_thresh_rising_period
/sys/.../events/in_magn_z_thresh_falling_period
/sys/.../events/in_magn_z_roc_rising_period
/sys/.../events/in_magn_z_roc_falling_period
/sys/.../events/in_rot_from_north_magnetic_thresh_rising_period
/sys/.../events/in_rot_from_north_magnetic_thresh_falling_period
/sys/.../events/in_rot_from_north_magnetic_roc_rising_period
/sys/.../events/in_rot_from_north_magnetic_roc_falling_period
/sys/.../events/in_rot_from_north_true_thresh_rising_period
/sys/.../events/in_rot_from_north_true_thresh_falling_period
/sys/.../events/in_rot_from_north_true_roc_rising_period
/sys/.../events/in_rot_from_north_true_roc_falling_period
/sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_period
/sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_period
/sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_rising_period
/sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_falling_period
/sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_period
/sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_period
/sys/.../events/in_rot_from_north_true_tilt_comp_roc_rising_period
/sys/.../events/in_rot_from_north_true_tilt_comp_roc_falling_period
/sys/.../events/in_voltageY_supply_thresh_rising_period
/sys/.../events/in_voltageY_supply_thresh_falling_period
/sys/.../events/in_voltageY_supply_roc_rising_period
/sys/.../events/in_voltageY_supply_roc_falling_period
/sys/.../events/in_voltageY_thresh_rising_period
/sys/.../events/in_voltageY_thresh_falling_period
/sys/.../events/in_voltageY_roc_rising_period
/sys/.../events/in_voltageY_roc_falling_period
/sys/.../events/in_tempY_thresh_rising_period
/sys/.../events/in_tempY_thresh_falling_period
/sys/.../events/in_tempY_roc_rising_period
/sys/.../events/in_tempY_roc_falling_period
/sys/.../events/in_accel_x&y&z_mag_falling_period
/sys/.../events/in_intensity0_thresh_period
/sys/.../events/in_proximity0_thresh_period
/sys/.../events/in_activity_still_thresh_rising_period
/sys/.../events/in_activity_still_thresh_falling_period
/sys/.../events/in_activity_walking_thresh_rising_period
/sys/.../events/in_activity_walking_thresh_falling_period
/sys/.../events/in_activity_jogging_thresh_rising_period
/sys/.../events/in_activity_jogging_thresh_falling_period
/sys/.../events/in_activity_running_thresh_rising_period
/sys/.../events/in_activity_running_thresh_falling_period
/sys/.../events/in_illuminance_thresh_either_periodKernelVersion은 2.6.37, Contact는 linux-iio@vger.kernel.org입니다. 이벤트가 생성되기 전에 해당 조건이 계속 충족되어야 하는 시간을 초 단위로 지정합니다. 방향을 지정하지 않으면 이 유지 시간을 양쪽 방향 모두에 적용합니다.
이벤트 생성 저역 통과 필터
1279-1287/sys/.../events/in_accel_thresh_rising_low_pass_filter_3db
/sys/.../events/in_anglvel_thresh_rising_low_pass_filter_3db
/sys/.../events/in_magn_thresh_rising_low_pass_filter_3dbKernelVersion은 4.2, Contact는 linux-iio@vger.kernel.org입니다. 이벤트 생성에 저역 통과 필터를 적용할 수 있는 경우 이 속성은 3 dB 주파수를 Hz 단위로 제공합니다. 값 0은 필터를 비활성화합니다.
이벤트 생성 고역 통과 필터
1289-1297/sys/.../events/in_accel_thresh_rising_high_pass_filter_3db
/sys/.../events/in_anglvel_thresh_rising_high_pass_filter_3db
/sys/.../events/in_magn_thresh_rising_high_pass_filter_3dbKernelVersion은 4.2, Contact는 linux-iio@vger.kernel.org입니다. 이벤트 생성에 고역 통과 필터를 적용할 수 있는 경우 이 속성은 3 dB 주파수를 Hz 단위로 제공합니다. 값 0은 필터를 비활성화합니다.
활동 상태 이벤트 활성화
1299-1311/sys/.../events/in_activity_still_thresh_rising_en
/sys/.../events/in_activity_still_thresh_falling_en
/sys/.../events/in_activity_walking_thresh_rising_en
/sys/.../events/in_activity_walking_thresh_falling_en
/sys/.../events/in_activity_jogging_thresh_rising_en
/sys/.../events/in_activity_jogging_thresh_falling_en
/sys/.../events/in_activity_running_thresh_rising_en
/sys/.../events/in_activity_running_thresh_falling_enKernelVersion은 3.19, Contact는 linux-iio@vger.kernel.org입니다. 활동 이벤트를 활성화하거나 비활성화합니다. 방향에 따라 센서가 지정한 상태에 진입하거나 그 상태에서 이탈할 때 이벤트를 생성합니다.
활동 상태 이벤트 신뢰도
1313-1331/sys/.../events/in_activity_still_thresh_rising_value
/sys/.../events/in_activity_still_thresh_falling_value
/sys/.../events/in_activity_walking_thresh_rising_value
/sys/.../events/in_activity_walking_thresh_falling_value
/sys/.../events/in_activity_jogging_thresh_rising_value
/sys/.../events/in_activity_jogging_thresh_falling_value
/sys/.../events/in_activity_running_thresh_rising_value
/sys/.../events/in_activity_running_thresh_falling_valueKernelVersion은 3.19, Contact는 linux-iio@vger.kernel.org입니다. 이벤트 생성 여부를 결정하는 데 사용할 신뢰도 값을 백분율 단위로 지정합니다.
달리기를 예로 들면 센서가 보고한 신뢰도 값이 in_activity_running_thresh_rising_value보다 크면 센서는 달리기 상태에 진입합니다. 반대로 센서가 보고한 신뢰도 값이 in_activity_running_thresh_falling_value보다 작으면 센서는 달리기 상태에서 이탈합니다.
가속도 크기 이벤트 활성화
1333-1352/sys/.../iio:deviceX/events/in_accel_mag_en
/sys/.../iio:deviceX/events/in_accel_mag_rising_en
/sys/.../iio:deviceX/events/in_accel_mag_falling_en
/sys/.../iio:deviceX/events/in_accel_x_mag_en
/sys/.../iio:deviceX/events/in_accel_x_mag_rising_en
/sys/.../iio:deviceX/events/in_accel_x_mag_falling_en
/sys/.../iio:deviceX/events/in_accel_y_mag_en
/sys/.../iio:deviceX/events/in_accel_y_mag_rising_en
/sys/.../iio:deviceX/events/in_accel_y_mag_falling_en
/sys/.../iio:deviceX/events/in_accel_z_mag_en
/sys/.../iio:deviceX/events/in_accel_z_mag_rising_en
/sys/.../iio:deviceX/events/in_accel_z_mag_falling_en
/sys/.../iio:deviceX/events/in_accel_x&y&z_mag_rising_en
/sys/.../iio:deviceX/events/in_accel_x&y&z_mag_falling_enKernelVersion은 2.6.37, Contact는 linux-iio@vger.kernel.org입니다. in_accel_x_thresh[_rising|_falling]_en과 비슷하지만, 여기서는 채널의 부호 있는 값이 아니라 채널 크기를 임계값과 비교합니다.
가속도 크기 이벤트 값
1354-1363/sys/.../events/in_accel_raw_mag_value
/sys/.../events/in_accel_x_raw_mag_rising_value
/sys/.../events/in_accel_y_raw_mag_rising_value
/sys/.../events/in_accel_z_raw_mag_rising_valueKernelVersion은 2.6.37, Contact는 linux-iio@vger.kernel.org입니다. 채널의 크기를 비교할 값을 지정합니다. 번호나 방향을 지정하지 않으면 이 유형의 모든 채널에 적용합니다.
기준 크기 상대 이벤트 활성화
1365-1376/sys/.../iio:deviceX/events/in_accel_mag_referenced_en
/sys/.../iio:deviceX/events/in_accel_mag_referenced_rising_en
/sys/.../iio:deviceX/events/in_accel_mag_referenced_falling_en
/sys/.../iio:deviceX/events/in_accel_y_mag_referenced_en
/sys/.../iio:deviceX/events/in_accel_y_mag_referenced_rising_en
/sys/.../iio:deviceX/events/in_accel_y_mag_referenced_falling_enKernelVersion은 5.18, Contact는 linux-iio@vger.kernel.org입니다. in_accel_mag[_y][_rising|_falling]_en과 비슷하지만 이벤트 값이 기준 크기에 상대적입니다. 기준 크기에는 중력 가속도가 포함됩니다.
기준 크기 상대 이벤트 값
1378-1389/sys/.../iio:deviceX/events/in_accel_mag_referenced_value
/sys/.../iio:deviceX/events/in_accel_mag_referenced_rising_value
/sys/.../iio:deviceX/events/in_accel_mag_referenced_falling_value
/sys/.../iio:deviceX/events/in_accel_y_mag_referenced_value
/sys/.../iio:deviceX/events/in_accel_y_mag_referenced_rising_value
/sys/.../iio:deviceX/events/in_accel_y_mag_referenced_falling_valueKernelVersion은 5.18, Contact는 linux-iio@vger.kernel.org입니다. 채널의 기준 크기를 비교할 값을 지정합니다. 축을 지정하지 않으면 이 유형의 모든 채널에 적용합니다.
걸음 수 절대 변화 이벤트
1391-1398/sys/.../events/in_steps_change_enKernelVersion은 4.0, Contact는 linux-iio@vger.kernel.org입니다. 채널 값의 절대 변화가 임계값을 지날 때 이벤트를 생성합니다. 걸음 수의 경우 사용자가 N걸음을 걸을 때마다 걸음 변화 이벤트를 생성하며, N은 in_steps_change_value로 설정합니다.
걸음 수 변화 임계값
1400-1408/sys/.../events/in_steps_change_valueKernelVersion은 4.0, Contact는 linux-iio@vger.kernel.org입니다. <type>[Y][_name]_roc[_rising|falling|]_en으로 활성화한 이벤트에서 장치가 비교할 변화 임계값을 지정합니다. 예를 들어 걸음 수에서 값을 3으로 설정하면 3걸음마다 걸음 변화 이벤트를 생성합니다.
현재 트리거 소스
1410-1415/sys/bus/iio/devices/iio:deviceX/trigger/current_triggerKernelVersion은 2.6.35, Contact는 linux-iio@vger.kernel.org입니다. 현재 사용하는 트리거 소스의 이름이며, /sys/class/iio/triggerY/name에 제공된 문자열을 사용합니다.
버퍼 스캔 수
1417-1421/sys/bus/iio/devices/iio:deviceX/bufferY/lengthKernelVersion은 5.11, Contact는 linux-iio@vger.kernel.org입니다. 버퍼에 들어 있는 스캔 수를 나타냅니다.
버퍼 캡처 활성화
1423-1432/sys/bus/iio/devices/iio:deviceX/bufferY/enableKernelVersion은 5.11, Contact는 linux-iio@vger.kernel.org입니다. 실제 버퍼 캡처를 시작합니다. 첫 번째 장치이고 조건이 맞으면 트리거도 시작합니다.
이벤트, 스케일, 샘플링 속도처럼 현재 활성화된 버퍼 캡처 세션에 영향을 주는 다른 속성은 캡처 중에 구성할 수 없을 수도 있습니다.
버퍼별 캡처 인터페이스
1434-1442/sys/bus/iio/devices/iio:deviceX/bufferYKernelVersion은 5.11, Contact는 linux-iio@vger.kernel.org입니다. 버퍼에서 트리거 한 번의 샘플 집합으로 캡처할 요소의 인터페이스가 들어 있는 디렉터리입니다.
커널 5.11부터 scan_elements 속성은 bufferY 디렉터리에 병합되어 버퍼별로 구성할 수 있습니다.
버퍼 스캔 요소 선택
1444-1476/sys/.../iio:deviceX/bufferY/in_accel_x_en
/sys/.../iio:deviceX/bufferY/in_accel_y_en
/sys/.../iio:deviceX/bufferY/in_accel_z_en
/sys/.../iio:deviceX/bufferY/in_deltaangl_x_en
/sys/.../iio:deviceX/bufferY/in_deltaangl_y_en
/sys/.../iio:deviceX/bufferY/in_deltaangl_z_en
/sys/.../iio:deviceX/bufferY/in_deltavelocity_x_en
/sys/.../iio:deviceX/bufferY/in_deltavelocity_y_en
/sys/.../iio:deviceX/bufferY/in_deltavelocity_z_en
/sys/.../iio:deviceX/bufferY/in_anglvel_x_en
/sys/.../iio:deviceX/bufferY/in_anglvel_y_en
/sys/.../iio:deviceX/bufferY/in_anglvel_z_en
/sys/.../iio:deviceX/bufferY/in_magn_x_en
/sys/.../iio:deviceX/bufferY/in_magn_y_en
/sys/.../iio:deviceX/bufferY/in_magn_z_en
/sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_en
/sys/.../iio:deviceX/bufferY/in_rot_from_north_true_en
/sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_tilt_comp_en
/sys/.../iio:deviceX/bufferY/in_rot_from_north_true_tilt_comp_en
/sys/.../iio:deviceX/bufferY/in_timestamp_en
/sys/.../iio:deviceX/bufferY/in_voltageY_supply_en
/sys/.../iio:deviceX/bufferY/in_voltageY_en
/sys/.../iio:deviceX/bufferY/in_voltageY-voltageZ_en
/sys/.../iio:deviceX/bufferY/in_incli_x_en
/sys/.../iio:deviceX/bufferY/in_incli_y_en
/sys/.../iio:deviceX/bufferY/in_pressureY_en
/sys/.../iio:deviceX/bufferY/in_pressure_en
/sys/.../iio:deviceX/bufferY/in_rot_quaternion_en
/sys/.../iio:deviceX/bufferY/in_proximity_enKernelVersion은 5.11, Contact는 linux-iio@vger.kernel.org입니다. 트리거 방식 데이터 캡처에 포함할 스캔 요소를 제어합니다.
버퍼 스캔 요소 저장 형식
1478-1513/sys/.../iio:deviceX/bufferY/in_accel_type
/sys/.../iio:deviceX/bufferY/in_deltaangl_type
/sys/.../iio:deviceX/bufferY/in_deltavelocity_type
/sys/.../iio:deviceX/bufferY/in_anglvel_type
/sys/.../iio:deviceX/bufferY/in_magn_type
/sys/.../iio:deviceX/bufferY/in_incli_type
/sys/.../iio:deviceX/bufferY/in_voltageY_type
/sys/.../iio:deviceX/bufferY/in_voltage_type
/sys/.../iio:deviceX/bufferY/in_voltageY_supply_type
/sys/.../iio:deviceX/bufferY/in_timestamp_type
/sys/.../iio:deviceX/bufferY/in_pressureY_type
/sys/.../iio:deviceX/bufferY/in_pressure_type
/sys/.../iio:deviceX/bufferY/in_rot_quaternion_type
/sys/.../iio:deviceX/bufferY/in_proximity_typeKernelVersion은 5.11, Contact는 linux-iio@vger.kernel.org입니다. 버퍼 안에서 스캔 요소 데이터를 저장하는 형식, 즉 사용자 공간에서 읽는 형식을 설명합니다. 형식은 [be|le]:[s|u]bits/storagebits[>>shift]입니다.
| 필드 | 전문 번역 |
|---|---|
| be 또는 le | 빅 엔디언 또는 리틀 엔디언을 지정합니다. |
| s 또는 u | 부호 있는 값(2의 보수)인지 부호 없는 값인지 지정합니다. |
| bits | 데이터 비트 수입니다. |
| storagebits | 패딩 후 데이터가 버퍼에서 차지하는 공간이며 데이터 정렬도 지정합니다. |
| shift | 지정된 경우 사용하지 않는 비트를 마스킹하기 전에 적용해야 할 시프트입니다. |
일부 장치는 전송 요소의 가운데에 데이터를 배치하고 양쪽에 추가 정보를 둡니다. 사용하지 않는 비트에도 추가 정보가 들어 있을 수 있으므로 깨끗한 값을 얻으려면 bits 값을 사용해 버퍼 출력 값을 적절히 마스킹해야 합니다.
예를 들어 s48/64>>2는 64비트 경계에 맞춰진 64비트 위치에 저장된 부호 있는 48비트 정수입니다. 깨끗한 값을 얻으려면 오른쪽으로 2비트 시프트한 뒤 결과의 상위 16비트를 0으로 만드는 마스크를 적용합니다. 다른 저장 조합을 지원할 때는 이 속성 형식을 적절히 확장합니다.
사용 가능한 스캔 요소 형식
1515-1520/sys/.../iio:deviceX/scan_elements/in_accel_type_availableKernelVersion은 2.6.37, Contact는 linux-iio@vger.kernel.org입니다. type 매개변수가 소수의 값 가운데 하나를 취할 수 있다면 이 속성이 그 값들을 나열합니다.
버퍼 스캔 요소 인덱스
1522-1559/sys/.../iio:deviceX/bufferY/in_voltageY_index
/sys/.../iio:deviceX/bufferY/in_voltageY_supply_index
/sys/.../iio:deviceX/bufferY/in_accel_x_index
/sys/.../iio:deviceX/bufferY/in_accel_y_index
/sys/.../iio:deviceX/bufferY/in_accel_z_index
/sys/.../iio:deviceX/bufferY/in_deltaangl_x_index
/sys/.../iio:deviceX/bufferY/in_deltaangl_y_index
/sys/.../iio:deviceX/bufferY/in_deltaangl_z_index
/sys/.../iio:deviceX/bufferY/in_deltavelocity_x_index
/sys/.../iio:deviceX/bufferY/in_deltavelocity_y_index
/sys/.../iio:deviceX/bufferY/in_deltavelocity_z_index
/sys/.../iio:deviceX/bufferY/in_anglvel_x_index
/sys/.../iio:deviceX/bufferY/in_anglvel_y_index
/sys/.../iio:deviceX/bufferY/in_anglvel_z_index
/sys/.../iio:deviceX/bufferY/in_magn_x_index
/sys/.../iio:deviceX/bufferY/in_magn_y_index
/sys/.../iio:deviceX/bufferY/in_magn_z_index
/sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_index
/sys/.../iio:deviceX/bufferY/in_rot_from_north_true_index
/sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_tilt_comp_index
/sys/.../iio:deviceX/bufferY/in_rot_from_north_true_tilt_comp_index
/sys/.../iio:deviceX/bufferY/in_incli_x_index
/sys/.../iio:deviceX/bufferY/in_incli_y_index
/sys/.../iio:deviceX/bufferY/in_timestamp_index
/sys/.../iio:deviceX/bufferY/in_pressureY_index
/sys/.../iio:deviceX/bufferY/in_pressure_index
/sys/.../iio:deviceX/bufferY/in_rot_quaternion_index
/sys/.../iio:deviceX/bufferY/in_proximity_indexKernelVersion은 5.11, Contact는 linux-iio@vger.kernel.org입니다. 하나의 양의 정수로 버퍼 안에서 이 스캔 요소의 위치를 지정합니다. 이 인덱스는 어떤 요소가 활성화되어 있는지에 따라 달라지지 않으며 연속적이지 않을 수도 있습니다.
따라서 사용자 공간에서 전체 레이아웃을 확정하려면 모든 _en 속성과 함께 인덱스를 사용해 어떤 채널이 존재하는지 알아내고, 관련 _type 속성으로 데이터 저장 형식을 알아내야 합니다.
활동 상태 신뢰도 읽기
1561-1569/sys/.../iio:deviceX/in_activity_still_input
/sys/.../iio:deviceX/in_activity_walking_input
/sys/.../iio:deviceX/in_activity_jogging_input
/sys/.../iio:deviceX/in_activity_running_inputKernelVersion은 3.19, Contact는 linux-iio@vger.kernel.org입니다. 활동에 대한 신뢰도를 백분율 단위로 읽는 속성입니다.
각속도 직교 오차
1571-1576/sys/.../iio:deviceX/in_anglvel_z_quadrature_correction_rawKernelVersion은 2.6.38, Contact는 linux-iio@vger.kernel.org입니다. 특정 시점에 장치에 존재하는 직교 오차의 양을 읽는 속성입니다.
가속도계 전력 모드
1578-1586/sys/.../iio:deviceX/in_accelY_power_modeKernelVersion은 3.11, Contact는 linux-iio@vger.kernel.org입니다. 칩의 전력 모드를 지정합니다.
| 모드 | 전문 번역 |
|---|---|
| low_noise | ADC의 잡음 수준을 낮춥니다. |
| low_power | 낮은 전류 소비를 활성화합니다. |
사용 가능한 출력 전력 모드 목록은 in_accel_power_mode_available에서 읽습니다.
에너지 측정값
1588-1598/sys/.../iio:deviceX/in_energy_input
/sys/.../iio:deviceX/in_energy_raw
/sys/.../iio:deviceX/in_energyY_active_raw
/sys/.../iio:deviceX/in_energyY_reactive_raw
/sys/.../iio:deviceX/in_energyY_apparent_rawKernelVersion은 4.0, Contact는 linux-iio@vger.kernel.org입니다. 장치가 보고한 에너지 값을 읽습니다. 예를 들어 사람 활동 센서는 사용자가 소비한 에너지를 보고합니다. 스케일 적용 후 단위는 줄(J)입니다.
거리 측정값
1600-1607/sys/.../iio:deviceX/in_distance_input
/sys/.../iio:deviceX/in_distance_rawKernelVersion은 4.0, Contact는 linux-iio@vger.kernel.org입니다. 물체까지 측정한 거리 또는 기능이 활성화된 동안 마지막 재부팅 이후 사용자가 이동한 거리를 읽습니다. 스케일 적용 후 단위는 미터입니다.
현재 구성을 EEPROM에 저장
1609-1615/sys/bus/iio/devices/iio:deviceX/store_eepromKernelVersion은 3.4.0, Contact는 linux-iio@vger.kernel.org입니다. '1'을 쓰면 현재 장치 구성을 칩 내장 EEPROM에 저장합니다. 전원을 켜거나 칩을 재설정한 뒤 장치는 저장된 구성을 자동으로 불러옵니다.
근접 측정값
1617-1630/sys/.../iio:deviceX/in_proximity_raw
/sys/.../iio:deviceX/in_proximity_input
/sys/.../iio:deviceX/in_proximityY_rawKernelVersion은 3.4, Contact는 linux-iio@vger.kernel.org입니다. 일반적으로 센서가 방출한 적외선이나 초음파의 반사도를 관찰해 어떤 물체가 센서 가까이에 있음을 나타내는 근접 측정값입니다.
이 센서들은 단위가 없는 경우가 많아 SI 단위로 변환할 수 없을 수 있습니다. 근접 측정값이 클수록 물체가 가깝고, 작을수록 멉니다. 스케일과 오프셋 적용 후 단위는 미터입니다.
조도 측정값
1632-1643/sys/.../iio:deviceX/in_illuminance_input
/sys/.../iio:deviceX/in_illuminance_raw
/sys/.../iio:deviceX/in_illuminanceY_input
/sys/.../iio:deviceX/in_illuminanceY_raw
/sys/.../iio:deviceX/in_illuminanceY_mean_raw
/sys/.../iio:deviceX/in_illuminance_ir_raw
/sys/.../iio:deviceX/in_illuminance_clear_rawKernelVersion은 3.4, Contact는 linux-iio@vger.kernel.org입니다. 조도 측정값이며, 스케일과 오프셋 적용 후 단위는 lux입니다.
무단위 광세기 측정값
1645-1665/sys/.../iio:deviceX/in_intensityY_raw
/sys/.../iio:deviceX/in_intensityY_ir_raw
/sys/.../iio:deviceX/in_intensityY_both_raw
/sys/.../iio:deviceX/in_intensityY_uv_raw
/sys/.../iio:deviceX/in_intensityY_uva_raw
/sys/.../iio:deviceX/in_intensityY_uvb_raw
/sys/.../iio:deviceX/in_intensityY_duv_raw
/sys/.../iio:deviceX/in_intensity_red_raw
/sys/.../iio:deviceX/in_intensity_green_raw
/sys/.../iio:deviceX/in_intensity_blue_raw
/sys/.../iio:deviceX/in_intensity_clear_rawKernelVersion은 3.4, Contact는 linux-iio@vger.kernel.org입니다. 단위가 없는 광세기입니다. both 수정자는 측정값에 가시광과 적외선 성분이 모두 들어 있음을, ir 수정자는 적외선 성분만 들어 있음을 나타냅니다.
uv 수정자는 측정값에 자외선 성분이 들어 있음을 나타냅니다. uva, uvb, duv 수정자는 각각 A, B, 심자외선(C) 성분이 들어 있음을 나타냅니다.
UV 지수
1667-1674/sys/.../iio:deviceX/in_uvindex_inputKernelVersion은 4.6, Contact는 linux-iio@vger.kernel.org입니다. 표준화된 CIE 홍반 작용 스펙트럼에 따라 햇빛의 파장별 사람 피부 반응에 가중치를 주어 측정한 자외선 강도 지수입니다. UV 지수는 0(낮음)에서 11 이상(극심)까지입니다.
광 측정 적분 시간
1676-1687/sys/.../iio:deviceX/in_intensity_integration_time
/sys/.../iio:deviceX/in_intensity_red_integration_time
/sys/.../iio:deviceX/in_intensity_green_integration_time
/sys/.../iio:deviceX/in_intensity_blue_integration_time
/sys/.../iio:deviceX/in_intensity_clear_integration_time
/sys/.../iio:deviceX/in_illuminance_integration_timeKernelVersion은 3.12, Contact는 linux-iio@vger.kernel.org입니다. 적분 시간을 초 단위로 읽거나 설정합니다. 지정한 유형의 모든 채널이 적분 시간을 공유하면 <type>_integration_time을 사용합니다.
속도 계산 시간
1689-1693/sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_integration_timeKernelVersion은 4.0, Contact는 linux-iio@vger.kernel.org입니다. 속력을 계산하는 시간 구간을 초 단위로 지정합니다.
회전 쿼터니언 원시값
1695-1702/sys/bus/iio/devices/iio:deviceX/in_rot_quaternion_rawKernelVersion은 3.15, Contact는 linux-iio@vger.kernel.org입니다. x y z w 형식을 사용하는 쿼터니언 구성 요소의 원시값입니다. x, y, z 구성 요소는 회전이 일어날 축을 나타내고 w 구성 요소는 회전량을 나타냅니다.
북쪽 기준 회전 원시값
1704-1712/sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_raw
/sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_raw
/sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_raw
/sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_rawKernelVersion은 3.15, Contact는 linux-iio@vger.kernel.org입니다. 기울기 센서의 보상을 적용하거나 적용하지 않고 측정한 진북 또는 자북 기준 회전의 원시값입니다.
전류 측정 원시값
1714-1729/sys/bus/iio/devices/iio:deviceX/in_currentY_raw
/sys/bus/iio/devices/iio:deviceX/in_currentY_supply_rawKernelVersion은 3.17, Contact는 linux-iio@vger.kernel.org입니다. 채널 Y의 원시 전류 측정값입니다. 스케일과 오프셋 적용 후 단위는 mA입니다. 오프셋이나 스케일이 없다면 출력을 mA 단위로 처리된 값으로 간주해야 합니다. 채널이 외부에서 사용할 수 있는 입력에 해당하지 않는 특수한 경우 이름이 붙은 형식 가운데 하나를 사용할 수 있습니다.
'i'와 'q' 수정자가 붙은 채널은 항상 쌍으로 존재하며 두 채널 모두 같은 신호를 가리킵니다. 'i' 채널에는 신호의 동상 성분이, 'q' 채널에는 직교 성분이 들어 있습니다.
교류 RMS 전류 원시값
1731-1737/sys/bus/iio/devices/iio:deviceX/in_altcurrentY_rms_rawKernelVersion은 6.18, Contact는 linux-iio@vger.kernel.org입니다. 채널 Y에서 측정한 원시, 즉 스케일 미적용·바이어스 미제거 상태의 제곱평균제곱근(RMS) 전류입니다. 스케일과 오프셋 적용 후 단위는 mA입니다.
펌웨어·하드웨어 기능 활성화
1739-1749/sys/.../iio:deviceX/in_energy_en
/sys/.../iio:deviceX/in_distance_en
/sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_en
/sys/.../iio:deviceX/in_steps_enKernelVersion은 3.19, Contact는 linux-iio@vger.kernel.org입니다. 펌웨어나 하드웨어에서 실행되는 장치 기능을 활성화합니다.
걸음 수를 예로 들면 보수계는 사용하지 않을 때 전력을 절약합니다. 기능을 활성화하면 펌웨어에서 사용자의 걸음 수를 세고 in_steps_input을 통해 내보냅니다.
누적 걸음 수
1751-1756/sys/.../iio:deviceX/in_steps_inputKernelVersion은 3.19, Contact는 linux-iio@vger.kernel.org입니다. 기능이 활성화된 동안 마지막 재부팅 이후 사용자가 걸은 횟수를 읽습니다.
현재 속력
1758-1765/sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_input
/sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_rawKernelVersion은 3.19, Contact는 linux-iio@vger.kernel.org입니다. 사용자의 현재 속력, 즉 속도 벡터의 노름 또는 크기를 읽습니다. 스케일 적용 후 단위는 m/s입니다.
걸음 판정 디바운스 횟수
1767-1773/sys/.../iio:deviceX/in_steps_debounce_countKernelVersion은 4.0, Contact는 linux-iio@vger.kernel.org입니다. 보수계가 사용자가 걷고 있다고 판단하려면 in_steps_filter_debounce_time 안에 발생해야 하는 걸음 수를 지정합니다.
걸음 판정 디바운스 시간
1775-1780/sys/.../iio:deviceX/in_steps_debounce_timeKernelVersion은 4.0, Contact는 linux-iio@vger.kernel.org입니다. 사용자가 걷고 있는지 판단하기 위해 발생한 걸음 수를 계산할 시간 구간을 초 단위로 지정합니다.
버퍼 워터마크
1782-1798/sys/bus/iio/devices/iio:deviceX/bufferY/watermarkKernelVersion은 5.11, Contact는 linux-iio@vger.kernel.org입니다. 대기할 최대 스캔 요소 수를 하나의 양의 정수로 지정합니다. poll은 워터마크에 도달할 때까지 차단됩니다.
차단 읽기는 요청한 읽기 양과 하위 워터마크 가운데 더 작은 양을 사용할 수 있을 때까지 기다립니다. 비차단 읽기는 사용 가능한 샘플 수가 워터마크 수준보다 적더라도 버퍼에서 그 샘플을 가져옵니다.
따라서 애플리케이션은 timeout이 있는 poll에서 차단한 뒤 timeout이 만료되면 사용 가능한 샘플을 읽어 최대 지연 시간을 보장할 수 있습니다.
버퍼 데이터 가용량
1800-1808/sys/bus/iio/devices/iio:deviceX/bufferY/data_availableKernelVersion은 5.11, Contact는 linux-iio@vger.kernel.org입니다. 버퍼에서 사용할 수 있는 데이터의 바이트 수를 나타내는 읽기 전용 값입니다. 출력 버퍼에서는 데이터를 쓸 수 있는 빈 공간의 양을, 입력 버퍼에서는 읽을 수 있는 데이터의 양을 나타냅니다.
하드웨어 FIFO 활성 상태
1810-1832/sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_enabledKernelVersion은 4.2, Contact는 linux-iio@vger.kernel.org입니다. 하드웨어 FIFO가 현재 활성화되어 있는지를 나타내는 읽기 전용 불리언 값입니다. 장치에 하드웨어 FIFO가 없으면 이 항목은 존재하지 않습니다.
현재 하드웨어 FIFO 워터마크 수준이 설정되어 있고 현재의 다른 장치 설정도 허용한다면 버퍼를 활성화할 때 하드웨어 FIFO도 활성화됩니다. 예를 들어 하드웨어 FIFO와 다른 방식으로 데이터를 샘플링하는 트리거를 설정했다면 하드웨어 FIFO는 활성화되지 않습니다.
하드웨어 FIFO가 활성화된 상태에서 그 수준이 하드웨어 FIFO 워터마크에 도달하면 장치는 하드웨어 FIFO를 장치 버퍼로 flush합니다. 장치 버퍼에 샘플이 없을 때 장치에서 비차단 읽기를 수행해도 flush가 강제됩니다.
하드웨어 FIFO가 활성화되어 있으면 워터마크 설정이 하드웨어 FIFO를 장치 버퍼로 flush하도록 보장하므로 버퍼 모드를 사용하는 데 트리거가 필요하지 않습니다.
하드웨어 FIFO 보고 지연
1834-1843/sys/bus/iio/devices/iio:device*/buffer/hwfifo_timeoutKernelVersion은 4.12, Contact는 linux-iio@vger.kernel.org입니다. timeout에 도달할 때까지 샘플 보고를 늦출 수 있게 하는 읽기/쓰기 속성입니다. 센서가 내부 FIFO에 샘플을 저장하는 동안 호스트 프로세서는 절전 상태로 머물 수 있습니다.
hwfifo_timeout을 설정해 최대 timeout을 초 단위로 지정하고, 같은 속성을 읽어 현재 지연 시간을 확인합니다. 값 0은 timeout이 없음을 뜻합니다.
현재 하드웨어 FIFO 워터마크
1845-1857/sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermarkKernelVersion은 4.2, Contact는 linux-iio@vger.kernel.org입니다. 하드웨어 FIFO의 현재 워터마크 수준을 하나의 정수로 담는 읽기 전용 항목입니다. 장치에 하드웨어 FIFO가 없으면 이 항목은 존재하지 않습니다.
드라이버는 사용자가 buffer/watermark에 설정한 값을 바탕으로 하되 하드웨어 제한을 고려해 하드웨어 FIFO 워터마크를 정합니다. 예를 들어 대부분의 하드웨어 버퍼는 32~64개 샘플로 제한되고, 일부 하드웨어 버퍼는 워터마크가 고정되어 있거나 최솟값을 가집니다. 값 0은 하드웨어 워터마크가 설정되지 않았음을 뜻합니다.
하드웨어 FIFO 최소 워터마크
1859-1868/sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_minKernelVersion은 4.2, Contact는 linux-iio@vger.kernel.org입니다. 이 장치의 하드웨어 FIFO에 사용할 최소 워터마크 수준을 하나의 양의 정수로 지정합니다. 장치에 하드웨어 FIFO가 없으면 이 항목은 존재하지 않습니다.
사용자가 buffer/watermark를 이 값보다 작게 설정하면 하드웨어 워터마크는 설정되지 않은 상태로 남습니다.
하드웨어 FIFO 최대 워터마크
1870-1879/sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_maxKernelVersion은 4.2, Contact는 linux-iio@vger.kernel.org입니다. 이 장치의 하드웨어 FIFO에 사용할 최대 워터마크 수준을 하나의 양의 정수로 지정합니다. 장치에 하드웨어 FIFO가 없으면 이 항목은 존재하지 않습니다.
사용자가 buffer/watermark를 이 값보다 크게 설정하면 하드웨어 워터마크는 이 값으로 제한됩니다.
사용 가능한 하드웨어 FIFO 워터마크
1881-1893/sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_availableKernelVersion은 4.2, Contact는 linux-iio@vger.kernel.org입니다. 하드웨어 FIFO에 사용할 수 있는 워터마크 수준을 양의 정수 목록으로 지정합니다. 이 항목은 선택 사항이며, 없으면 hwfifo_watermark_min과 hwfifo_watermark_max 사이의 모든 값을 지원한다는 뜻입니다.
사용자가 buffer/watermark를 hwfifo_watermak_min보다 크지만 이 목록의 어떤 값과도 같지 않은 값으로 설정하면 드라이버가 하드웨어 FIFO 워터마크 수준에 적합한 값을 선택합니다.
비접촉 온도 센서 방사율 보정
1895-1904/sys/bus/iio/devices/iio:deviceX/in_temp_calibemissivity
/sys/bus/iio/devices/iio:deviceX/in_tempY_calibemissivity
/sys/bus/iio/devices/iio:deviceX/in_temp_object_calibemissivity
/sys/bus/iio/devices/iio:deviceX/in_tempY_object_calibemissivityKernelVersion은 4.1, Contact는 linux-iio@vger.kernel.org입니다. 비접촉 온도 센서의 시야에 들어오는 표면의 방사율 비율입니다. 방사율은 0에서 1까지이며, 1은 흑체의 방사율입니다.
자기장 오버샘플링 비율
1906-1916/sys/bus/iio/devices/iio:deviceX/in_magn_x_oversampling_ratio
/sys/bus/iio/devices/iio:deviceX/in_magn_y_oversampling_ratio
/sys/bus/iio/devices/iio:deviceX/in_magn_z_oversampling_ratioKernelVersion은 4.2, Contact는 linux-iio@vger.kernel.org입니다. 하나의 데이터 지점을 얻기 위해 하드웨어가 수행하는 측정 횟수입니다. 하드웨어는 <type>[_name]_oversampling_ratio번 측정하고 그 평균값을 출력 데이터로 반환합니다.
<type>[_name]_oversampling_ratio번 측정해 얻은 각 값은 <type>[_name]_sampling_frequency에서 하나의 샘플로 간주합니다.
물질 농도 원시값
1918-1934/sys/bus/iio/devices/iio:deviceX/in_concentration_raw
/sys/bus/iio/devices/iio:deviceX/in_concentrationY_raw
/sys/bus/iio/devices/iio:deviceX/in_concentration_co2_raw
/sys/bus/iio/devices/iio:deviceX/in_concentrationY_co2_raw
/sys/bus/iio/devices/iio:deviceX/in_concentration_ethanol_raw
/sys/bus/iio/devices/iio:deviceX/in_concentrationY_ethanol_raw
/sys/bus/iio/devices/iio:deviceX/in_concentration_h2_raw
/sys/bus/iio/devices/iio:deviceX/in_concentrationY_h2_raw
/sys/bus/iio/devices/iio:deviceX/in_concentration_o2_raw
/sys/bus/iio/devices/iio:deviceX/in_concentrationY_o2_raw
/sys/bus/iio/devices/iio:deviceX/in_concentration_voc_raw
/sys/bus/iio/devices/iio:deviceX/in_concentrationY_voc_rawKernelVersion은 4.3, Contact는 linux-iio@vger.kernel.org입니다. 물질의 원시값, 즉 스케일과 오프셋 등을 적용하지 않은 판독값입니다. 스케일과 오프셋 적용 후 단위는 백분율입니다.
저항 원시값
1936-1944/sys/bus/iio/devices/iio:deviceX/in_resistance_raw
/sys/bus/iio/devices/iio:deviceX/in_resistanceY_raw
/sys/bus/iio/devices/iio:deviceX/out_resistance_raw
/sys/bus/iio/devices/iio:deviceX/out_resistanceY_rawKernelVersion은 4.3, Contact는 linux-iio@vger.kernel.org입니다. 스케일과 오프셋 등을 적용하지 않은 저항 원시 판독값입니다. 스케일과 오프셋 적용 후 단위는 옴입니다.
센서 히터 활성화
1946-1955/sys/bus/iio/devices/iio:deviceX/heater_enableKernelVersion은 4.1.0, Contact는 linux-iio@vger.kernel.org입니다. '1'은 히터 기능 활성화, '0'은 비활성화를 지정하며 읽을 때도 같은 값이 적용됩니다.
이 ABI는 특히 습도 센서에서 장치를 가열해 특정 습도 환경에서 생긴 결로를 제거하는 데 적용됩니다.
pH 원시값
1957-1962/sys/bus/iio/devices/iio:deviceX/in_ph_rawKernelVersion은 4.5, Contact는 linux-iio@vger.kernel.org입니다. 물 1리터 안의 하이드로늄 이온을 밑이 10인 음의 로그로 나타낸 물질의 pH 원시값이며, 스케일과 오프셋 등을 적용하지 않은 값입니다.
IIO 센서 장착 행렬
1964-2024/sys/bus/iio/devices/iio:deviceX/mount_matrix
/sys/bus/iio/devices/iio:deviceX/in_mount_matrix
/sys/bus/iio/devices/iio:deviceX/out_mount_matrix
/sys/bus/iio/devices/iio:deviceX/in_anglvel_mount_matrix
/sys/bus/iio/devices/iio:deviceX/in_accel_mount_matrixKernelVersion은 4.6, Contact는 linux-iio@vger.kernel.org입니다. IIO 센서의 장착 행렬입니다. 센서 칩이 장착된 주 하드웨어에 대해 센서 칩이 어떻게 배치되었는지를 사용자 공간에 알려 주는 회전 행렬입니다.
주 하드웨어의 배치는 센서가 측정하는 물리량과 관련된 로컬 기준 좌표계에 따라 정의합니다. 회전 행렬은 플랫폼 데이터 및/또는 Device Tree를 통해 보드별 방식으로 정의하므로 주 하드웨어 기준 좌표계의 정의는 구현자가 선택합니다. 아래 자기계 예시가 그 선택을 보여 줍니다.
애플리케이션은 샘플에 이 회전 행렬을 적용해야 합니다. 그러면 주 하드웨어 기준 좌표계를 로컬 기준 좌표계에 맞췄을 때 센서 칩 기준 좌표계도 정확히 맞춰집니다.
| 행렬 | 의미 |
|---|---|
| [0, 1, 0; 1, 0, 0; 0, 0, -1] | 일반적인 3×3 유니터리 장착 행렬의 예입니다. |
| [1, 0, 0; 0, 1, 0; 0, 0, 1] | 센서 칩과 주 하드웨어가 서로 완전히 정렬된 항등 행렬입니다. |
자기계 센서의 장착 행렬은 주 하드웨어에 대한 센서 칩의 방향을 사용자 공간에 알려 줍니다. 더 구체적으로 주 하드웨어 방향은 로컬 지구 지자기 기준 좌표계를 기준으로 다음과 같이 정의합니다.
| 기준 좌표계 | X축 | Y축 | Z축 |
|---|---|---|---|
| 로컬 지구 지자기 | 지면에 있고 북쪽 축에 수직이며 동쪽이 양의 방향입니다. | 지면에 있고 자북 방향이 양의 방향입니다. | 지면에 수직이며 위쪽이 양의 방향입니다. |
| 휴대형 장치: 전면 카메라가 위쪽인 자연스러운 방향 | 화면 평면에 있고 Y축에 수직이며 화면 오른쪽이 양의 방향입니다. | 화면 평면에 있고 화면 위쪽이 양의 방향입니다. | 화면 평면에 수직이며 화면 바깥쪽이 양의 방향입니다. |
| 쿼드로터 UAV | 프로펠러 평면에 있고 Y축에 수직이며 UAV의 우현이 양의 방향입니다. | 프로펠러 평면에 있고 전방 카메라 방향이 양의 방향입니다. | 프로펠러 평면에 수직이며 위쪽이 양의 방향입니다. |
전기전도도 원시값
2026-2032/sys/bus/iio/devices/iio:deviceX/in_electricalconductivity_rawKernelVersion은 4.8, Contact는 linux-iio@vger.kernel.org입니다. 스케일과 오프셋 등을 적용하지 않은 전기전도도 원시 판독값입니다. 스케일과 오프셋 적용 후 단위는 지멘스/미터입니다.
카운터 채널 계수
2034-2042/sys/bus/iio/devices/iio:deviceX/in_countY_rawKernelVersion은 4.10, Contact는 linux-iio@vger.kernel.org입니다. 이 인터페이스는 폐기 예정이므로 Counter 서브시스템을 사용하십시오.
채널 Y에서 가져온 카운터 장치의 원시 계수입니다. 직교 카운터에서는 사용 가능한 [Y]_scale을 곱하면 채널 Y의 단일 직교 신호 위상에 대한 계수가 됩니다.
카운터 위치 기준 인덱스
2044-2053/sys/bus/iio/devices/iio:deviceX/in_indexY_rawKernelVersion은 4.10, Contact는 linux-iio@vger.kernel.org입니다. 이 인터페이스는 폐기 예정이므로 Counter 서브시스템을 사용하십시오.
채널 Y의 카운터 장치 원시 인덱스 값입니다. 이 속성은 회전당 한 번의 펄스 같은 절대 위치 기준을 제공하며, 필요에 따라 위치 시스템의 원점을 맞추는 데 사용할 수 있습니다.
사용 가능한 카운터 방향
2055-2064/sys/bus/iio/devices/iio:deviceX/in_count_count_direction_availableKernelVersion은 4.12, Contact는 linux-iio@vger.kernel.org입니다. 이 인터페이스는 폐기 예정이므로 Counter 서브시스템을 사용하십시오.
| 값 | 전문 번역 |
|---|---|
| up | 카운터 장치의 값이 증가합니다. |
| down | 카운터 장치의 값이 감소합니다. |
카운터 채널 방향
2066-2072/sys/bus/iio/devices/iio:deviceX/in_countY_count_directionKernelVersion은 4.12, Contact는 linux-iio@vger.kernel.org입니다. 이 인터페이스는 폐기 예정이므로 Counter 서브시스템을 사용하십시오. 채널 Y에 대한 카운터 장치 원시 카운터의 방향입니다.
전압 채널 심볼 라벨
2074-2082/sys/bus/iio/devices/iio:deviceX/in_voltageY_label
/sys/bus/iio/devices/iio:deviceX/out_voltageY_labelKernelVersion은 5.8, Contact는 linux-iio@vger.kernel.org입니다. 장치 채널에 붙이는 선택적 심볼 라벨입니다. 이 채널에 라벨이 정의되어 있다면 채널별 속성에 그 라벨을 추가합니다. 사용자 공간이 개별 채널을 더 잘 식별하는 데 유용합니다.
위상차 원시값
2084-2089/sys/bus/iio/devices/iio:deviceX/in_phaseY_rawKernelVersion은 4.18, Contact는 linux-iio@vger.kernel.org입니다. 채널 Y의 스케일 미적용 위상차 원시 판독값입니다. 스케일과 오프셋 적용 후 단위는 라디안입니다.
미세먼지 질량 농도
2091-2104/sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm1_input
/sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm1_input
/sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm2p5_input
/sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm2p5_input
/sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm4_input
/sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm4_input
/sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm10_input
/sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm10_inputKernelVersion은 4.22, Contact는 linux-iio@vger.kernel.org입니다. 입자상 물질의 질량 농도를 ug / m3 단위로 읽습니다. pmX는 공기역학적 직경이 X 마이크로미터 이하인 입자로 구성됩니다.
사용 가능한 조도 이벤트 유지 시간
2106-2112/sys/bus/iio/devices/iio:deviceX/events/in_illuminance_period_availableDate는 2019년 11월, KernelVersion은 5.4, Contact는 linux-iio@vger.kernel.org입니다. 인터럽트를 발생시키기 전에 광세기가 임계값보다 높게 유지되어야 하는 유효 시간 목록을 초 단위로 제공합니다.
노치 필터 중심 주파수
2114-2119/sys/bus/iio/devices/iio:deviceX/in_filter_notch_center_frequencyKernelVersion은 5.5, Contact는 linux-iio@vger.kernel.org입니다. 노치 필터의 중심 주파수를 Hz 단위로 지정합니다. 예를 들어 전원선 잡음을 억제하는 데 사용합니다.
열전대 유형
2121-2125/sys/bus/iio/devices/iio:deviceX/in_temp_thermocouple_typeKernelVersion은 5.5, Contact는 linux-iio@vger.kernel.org입니다. B, E, J, K, N, R, S, T 가운데 하나의 열전대 유형입니다.
물체 온도 계산용 보정 주변 온도
2127-2133/sys/bus/iio/devices/iio:deviceX/in_temp_object_calibambient
/sys/bus/iio/devices/iio:deviceX/in_tempY_object_calibambientKernelVersion은 5.10, Contact는 linux-iio@vger.kernel.org입니다. 물체 온도 계산에 사용하는 보정된 주변 온도이며 단위는 밀리도 섭씨입니다.
CIE 색 공간 광세기
2135-2142/sys/bus/iio/devices/iio:deviceX/in_intensity_x_raw
/sys/bus/iio/devices/iio:deviceX/in_intensity_y_raw
/sys/bus/iio/devices/iio:deviceX/in_intensity_z_rawKernelVersion은 5.10, Contact는 linux-iio@vger.kernel.org입니다. CIE 1931/DIN 5033 색 공간에 따른 스케일 미적용 광세기입니다. 스케일 적용 후 단위는 원문 표기상 nano nanowatts per square meter입니다.
각도 채널 라벨
2144-2152/sys/bus/iio/devices/iio:deviceX/in_anglY_labelKernelVersion은 5.12, Contact는 linux-iio@vger.kernel.org입니다. 채널 Y에 붙이는 선택적 심볼 라벨입니다. Intel HID 힌지 센서의 라벨 값은 hinge, keyboard, screen이며, 세 채널은 각각 힌지 각도, 키보드 각도, 화면 각도에 대응합니다.
광 센서 상대 히스테리시스
2154-2161/sys/bus/iio/devices/iio:deviceX/in_illuminance_hysteresis_relative
/sys/bus/iio/devices/iio:deviceX/in_intensity_hysteresis_relativeKernelVersion은 5.12, Contact는 linux-iio@vger.kernel.org입니다. 이벤트를 생성하기 전에 데이터 필드가 채널 절대값에 대해 얼마나 변해야 하는지를 광 센서용 백분율로 지정합니다. 단위는 이전 판독값에 대한 백분율입니다.
런타임 자동 교정
2163-2176/sys/bus/iio/devices/iio:deviceX/calibration_auto_enableDate는 2020년 6월, KernelVersion은 5.8, Contact는 linux-iio@vger.kernel.org입니다. 일부 센서는 런타임에 자동 교정을 적용할 수 있습니다. 예를 들어 측정 챔버에 오염 물질이 쌓이거나 광학 요소가 열화되어 센서 드리프트가 생기는 것을 보상해야 할 수 있습니다.
이 속성에 1을 쓰면 자동 교정 기능을 활성화하고 0을 쓰면 비활성화합니다. 읽으면 현재 상태를 반환합니다.
기준값을 이용한 강제 교정
2178-2194/sys/bus/iio/devices/iio:deviceX/calibration_forced_valueDate는 2020년 6월, KernelVersion은 5.8, Contact는 linux-iio@vger.kernel.org입니다. 일부 센서는 외부 기준 장치 등에서 얻은 알려진 측정값을 사용해 수동 교정을 적용할 수 있습니다.
이 속성에 값을 쓰면 해당 교정 변경을 강제로 수행합니다. scd30에서는 값이 [400 1 2000] 범위에 있어야 합니다.
scd30에서는 값을 한 번 쓴 뒤에야 유효한 값을 얻을 수 있습니다. 그 전에는 이 값을 다시 읽은 결과를 무시해야 합니다. scd4x에서는 수동 교정이 실패하면 즉시 오류를 반환합니다.
강제 교정값 가용 범위
2196-2203/sys/bus/iio/devices/iio:deviceX/calibration_forced_value_availableKernelVersion은 5.15, Contact는 linux-iio@vger.kernel.org입니다. 강제 교정값에 사용할 수 있는 범위를 [min step max] 형식으로 제공합니다.
채널별 샘플링 주파수
2204-2213/sys/bus/iio/devices/iio:deviceX/in_voltageY_sampling_frequency
/sys/bus/iio/devices/iio:deviceX/in_powerY_sampling_frequency
/sys/bus/iio/devices/iio:deviceX/in_currentY_sampling_frequencyKernelVersion은 5.20, Contact는 linux-iio@vger.kernel.org입니다. 일부 장치는 개별 채널의 샘플링 주파수를 따로 제어합니다. 하나의 스캔에서 여러 채널을 활성화하면 채널별 샘플링 주파수로부터 스캔의 sampling_frequency를 계산할 수 있습니다.
단일·이중 탭 이벤트 활성화
2215-2220/sys/.../events/in_accel_gesture_singletap_en
/sys/.../events/in_accel_gesture_doubletap_enKernelVersion은 6.1, Contact는 linux-iio@vger.kernel.org입니다. 장치는 단일 탭 또는 이중 탭을 감지하면 이벤트를 생성합니다.
탭 제스처 임계값
2222-2230/sys/.../events/in_accel_gesture_singletap_value
/sys/.../events/in_accel_gesture_doubletap_valueKernelVersion은 6.1, Contact는 linux-iio@vger.kernel.org입니다. 탭 제스처 이벤트를 생성하기 위해 장치가 비교할 임계값을 지정합니다. 임계값이 낮을수록 탭 감지 감도가 높아집니다. 단위와 값의 정확한 의미는 장치별로 다릅니다.
사용 가능한 탭 감지 임계값
2232-2237/sys/.../events/in_accel_gesture_tap_value_availableKernelVersion은 6.1, Contact는 linux-iio@vger.kernel.org입니다. 탭 감지 감도를 조절하는 데 사용할 수 있는 모든 임계값을 나열합니다.
탭 감지기 reset timeout
2239-2247/sys/.../events/in_accel_gesture_singletap_reset_timeout
/sys/.../events/in_accel_gesture_doubletap_reset_timeoutKernelVersion은 6.1, Contact는 linux-iio@vger.kernel.org입니다. 탭 이벤트가 발생한 뒤 탭 감지기가 다른 탭 이벤트를 찾지 않을 timeout을 초 단위로 지정합니다. 즉, 두 단일 탭 사이 또는 두 이중 탭 사이의 최소 정지 시간입니다.
사용 가능한 탭 reset timeout
2249-2253/sys/.../events/in_accel_gesture_tap_reset_timeout_availableKernelVersion은 6.1, Contact는 linux-iio@vger.kernel.org입니다. 사용할 수 있는 모든 탭 reset timeout 값을 나열하며 단위는 초입니다.
이중 탭의 두 번째 탭 최소 지연
2255-2260/sys/.../events/in_accel_gesture_doubletap_tap2_min_delayKernelVersion은 6.1, Contact는 linux-iio@vger.kernel.org입니다. 이중 탭을 이루는 두 탭 사이의 최소 정지 시간을 초 단위로 지정합니다.
사용 가능한 이중 탭 지연
2262-2267/sys/.../events/in_accel_gesture_doubletap_tap2_min_delay_availableKernelVersion은 6.1, Contact는 linux-iio@vger.kernel.org입니다. 이중 탭의 두 탭 사이에 사용할 수 있는 모든 지연 값을 나열하며 단위는 초입니다.
탭 상단·하단 peak 간 최대 시간
2269-2275/sys/.../events/in_accel_gesture_tap_maxtomin_timeKernelVersion은 6.1, Contact는 linux-iio@vger.kernel.org입니다. 탭을 유효한 이벤트로 간주하기 위해 허용할 상단 peak와 하단 peak 사이의 최대 시간 차이를 지정합니다. 단위는 초입니다.
사용 가능한 탭 peak 간 시간
2277-2282/sys/.../events/in_accel_gesture_tap_maxtomin_time_availableKernelVersion은 6.1, Contact는 linux-iio@vger.kernel.org입니다. 상단 peak에서 하단 peak까지 사용할 수 있는 모든 시간 값을 나열하며 단위는 초입니다.
Euler 각 원시값
2284-2291/sys/bus/iio/devices/iio:deviceX/in_rot_yaw_raw
/sys/bus/iio/devices/iio:deviceX/in_rot_pitch_raw
/sys/bus/iio/devices/iio:deviceX/in_rot_roll_rawKernelVersion은 6.1, Contact는 linux-iio@vger.kernel.org입니다. 스케일 미적용 Euler 각 원시 판독값입니다. 스케일 적용 후 단위는 도(deg)입니다.
센서 일련번호
2293-2298/sys/bus/iio/devices/iio:deviceX/serialnumberKernelVersion은 6.1, Contact는 linux-iio@vger.kernel.org입니다. 예시 형식은 센서의 고유 ID 번호를 나타내는 16바이트 HEX 문자열이며, 바이트마다 숫자 두 자리로 표현합니다.
사용 가능한 필터 모드
2300-2336/sys/bus/iio/devices/iio:deviceX/filter_type_available
/sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_filter_type_availableKernelVersion은 6.1, Contact는 linux-iio@vger.kernel.org입니다. 읽으면 사용할 수 있는 필터 모드 목록을 반환합니다. 속성의 선택지는 다음과 같습니다.
| 값 | 전문 번역 |
|---|---|
| none | 필터를 비활성화하거나 우회합니다. |
| sinc1 | 디지털 sinc1 필터입니다. 첫 변환 시간이 빠르지만 잡음 성능이 좋지 않습니다. |
| sinc3 | 디지털 sinc3 필터입니다. 첫 변환 시간이 중간 정도이고 잡음 성능이 좋습니다. |
| sinc3+pf1 | Sinc3 + 장치별 Post Filter 1입니다. |
| sinc3+pf2 | Sinc3 + 장치별 Post Filter 2입니다. |
| sinc3+pf3 | Sinc3 + 장치별 Post Filter 3입니다. |
| sinc3+pf4 | Sinc3 + 장치별 Post Filter 4입니다. |
| sinc3+rej60 | Sinc3 + 60 Hz 제거입니다. |
| sinc3+sinc1 | Sinc3 + 8회 평균입니다. 첫 변환 시간이 짧습니다. |
| sinc4 | Sinc4입니다. 잡음 성능이 매우 좋지만 첫 변환 시간이 깁니다. |
| sinc4+lp | Sinc4 + Low Pass Filter입니다. |
| sinc4+sinc1 | Sinc4 + 8회 평균입니다. 첫 변환 시간이 짧습니다. |
| sinc4+rej60 | Sinc4 + 60 Hz 제거입니다. |
| sinc5 | 디지털 sinc5 필터입니다. 잡음 성능이 매우 좋습니다. |
| sinc5+avg | Sinc5 + 4회 평균입니다. |
| sinc5+pf1 | Sinc5 + 장치별 Post Filter 1입니다. |
| sinc5+sinc1 | Sinc5 + Sinc1입니다. |
| sinc5+sinc1+pf1 | Sinc5 + Sinc1 + 장치별 Post Filter 1입니다. |
| sinc5+sinc1+pf2 | Sinc5 + Sinc1 + 장치별 Post Filter 2입니다. |
| sinc5+sinc1+pf3 | Sinc5 + Sinc1 + 장치별 Post Filter 3입니다. |
| sinc5+sinc1+pf4 | Sinc5 + Sinc1 + 장치별 Post Filter 4입니다. |
| wideband | 리플이 낮은 광대역 통과대역과 급격한 천이대역을 가진 필터입니다. |
채널 필터 유형
2338-2344/sys/bus/iio/devices/iio:deviceX/filter_type
/sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_filter_typeKernelVersion은 6.1, Contact는 linux-iio@vger.kernel.org입니다. 채널에 적용할 필터 유형을 지정합니다. 가능한 값은 filter_type_available 속성이 제공합니다.
근접 이벤트 누적 판정 시간
2346-2353/sys/.../events/in_proximity_thresh_either_runningperiodKernelVersion은 6.6, Contact는 linux-iio@vger.kernel.org입니다. 이벤트를 생성하기 전에 in_proximity_thresh_either_runningcount개의 조건이 발생해야 하는 진행 시간 구간을 초 단위로 지정합니다. 방향을 지정하지 않으면 이 시간 구간을 양쪽 방향 모두에 적용합니다.
근접 이벤트 누적 조건 수
2355-2360/sys/.../events/in_proximity_thresh_either_runningcountKernelVersion은 6.6, Contact는 linux-iio@vger.kernel.org입니다. 진행 시간 구간 안에 이벤트를 생성하기 위해 발생해야 하는 조건의 수입니다.
광원 색온도
2362-2367/sys/bus/iio/devices/iio:deviceX/in_colortemp_rawKernelVersion은 6.7, Contact는 linux-iio@vger.kernel.org입니다. 빛의 색온도를 나타내며 Kelvin 단위로 측정합니다.
CIE 1931 색도 좌표
2369-2375/sys/bus/iio/devices/iio:deviceX/in_chromaticity_x_raw
/sys/bus/iio/devices/iio:deviceX/in_chromaticity_y_rawKernelVersion은 6.7, Contact는 linux-iio@vger.kernel.org입니다. CIE 1931 색도도에서 빛의 x 및 y 색 좌표입니다.
장치 채널 이벤트 라벨
2377-2390/sys/bus/iio/devices/iio:deviceX/events/in_altvoltageY_mag_either_label
/sys/bus/iio/devices/iio:deviceX/events/in_altvoltageY_mag_rising_label
/sys/bus/iio/devices/iio:deviceX/events/in_altvoltageY_thresh_falling_label
/sys/bus/iio/devices/iio:deviceX/events/in_altvoltageY_thresh_rising_label
/sys/bus/iio/devices/iio:deviceX/events/in_anglvelY_mag_rising_label
/sys/bus/iio/devices/iio:deviceX/events/in_anglY_thresh_rising_label
/sys/bus/iio/devices/iio:deviceX/events/in_phaseY_mag_rising_labelKernelVersion은 6.7, Contact는 linux-iio@vger.kernel.org입니다. 장치 채널 이벤트에 붙이는 선택적 심볼 라벨입니다. 이벤트에 라벨이 정의되어 있다면 이벤트별 속성에 그 라벨을 추가합니다. 사용자 공간이 개별 이벤트를 더 잘 식별하는 데 유용합니다.
탭 제스처 확인 timeout 활성화
2392-2396/sys/.../events/in_accel_gesture_tap_wait_timeoutKernelVersion은 6.7, Contact는 linux-iio@vger.kernel.org입니다. timeout을 사용하는 탭 제스처 확인을 활성화합니다.
탭 제스처 확인 timeout
2398-2402/sys/.../events/in_accel_gesture_tap_wait_durKernelVersion은 6.7, Contact는 linux-iio@vger.kernel.org입니다. 탭 제스처 확인의 timeout 값을 초 단위로 지정합니다.
사용 가능한 탭 확인 timeout
2404-2408/sys/.../events/in_accel_gesture_tap_wait_dur_availableKernelVersion은 6.7, Contact는 linux-iio@vger.kernel.org입니다. 탭 제스처 확인에 사용할 수 있는 timeout 값의 목록입니다.
전류 감지 shunt 저항
2410-2416/sys/.../iio:deviceX/in_shunt_resistor
/sys/.../iio:deviceX/in_current_shunt_resistor
/sys/.../iio:deviceX/in_power_shunt_resistorKernelVersion은 6.10, Contact는 linux-iio@vger.kernel.org입니다. 전류 감지 저항의 값을 옴 단위로 나타냅니다.
사용자 attention 값
2418-2424/sys/.../iio:deviceX/in_attention_inputKernelVersion은 6.13, Contact는 linux-iio@vger.kernel.org입니다. 시스템에 대한 사용자의 attention을 백분율 단위로 나타내는 값입니다. 일반적으로 사용자가 화면을 보고 있는지를 의미합니다.
IIO objects and channel identity
sysfs-bus-iio:1-85IIO는 deviceX, triggerX와 buffer를 분리해 센서 채널, 캡처 시점, 저장을 구성합니다. name과 label은 물리 장치와 표준 위치·용도를 사용자 공간에서 안정적으로 식별하게 합니다.