| What: /sys/bus/iio/devices/iio:deviceX |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Hardware chip or device accessed by one communication port. |
| Corresponds to a grouping of sensor channels. X is the IIO |
| index of the device. |
| |
| What: /sys/bus/iio/devices/triggerX |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| An event driven driver of data capture to an in kernel buffer. |
| May be provided by a device driver that also has an IIO device |
| based on hardware generated events (e.g. data ready) or |
| provided by a separate driver for other hardware (e.g. |
| periodic timer, GPIO or high resolution timer). |
| Contains trigger type specific elements. These do not |
| generalize well and hence are not documented in this file. |
| X is the IIO index of the trigger. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/buffer |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Directory of attributes relating to the buffer for the device. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/name |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Description of the physical chip / device for device X. |
| Typically a part number. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/current_timestamp_clock |
| KernelVersion: 4.5 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| String identifying current posix clock used to timestamp |
| buffered samples and events for device X. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency |
| What: /sys/bus/iio/devices/iio:deviceX/buffer/sampling_frequency |
| What: /sys/bus/iio/devices/triggerX/sampling_frequency |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Some devices have internal clocks. This parameter sets the |
| resulting sampling frequency. In many devices this |
| parameter has an effect on input filters etc. rather than |
| simply controlling when the input is sampled. As this |
| effects data ready triggers, hardware buffers and the sysfs |
| direct access interfaces, it may be found in any of the |
| relevant directories. If it effects all of the above |
| then it is to be found in the base device directory. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency_available |
| What: /sys/bus/iio/devices/iio:deviceX/in_proximity_sampling_frequency_available |
| What: /sys/.../iio:deviceX/buffer/sampling_frequency_available |
| What: /sys/bus/iio/devices/triggerX/sampling_frequency_available |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| When the internal sampling clock can only take a small |
| discrete set of values, this file lists those available. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/oversampling_ratio |
| KernelVersion: 2.6.38 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Hardware dependent ADC oversampling. Controls the sampling ratio |
| of the digital filter if available. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/oversampling_ratio_available |
| KernelVersion: 2.6.38 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Hardware dependent values supported by the oversampling filter. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_raw |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Raw (unscaled no bias removal etc.) voltage measurement from |
| channel Y. In special cases where the channel does not |
| correspond to externally available input one of the named |
| versions may be used. The number must always be specified and |
| unique to allow association with event codes. Units after |
| application of scale and offset are millivolts. |
| |
| Channels with 'i' and 'q' modifiers always exist in pairs and both |
| channels refer to the same signal. The 'i' channel contains the in-phase |
| component of the signal while the 'q' channel contains the quadrature |
| component. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_raw |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Raw (unscaled) differential voltage measurement equivalent to |
| channel Y - channel Z where these channel numbers apply to the |
| physically equivalent inputs when non differential readings are |
| separately available. In differential only parts, then all that |
| is required is a consistent labeling. Units after application |
| of scale and offset are millivolts. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_currentY_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_raw |
| KernelVersion: 3.17 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Raw (unscaled no bias removal etc.) current measurement from |
| channel Y. In special cases where the channel does not |
| correspond to externally available input one of the named |
| versions may be used. The number must always be specified and |
| unique to allow association with event codes. Units after |
| application of scale and offset are milliamps. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_powerY_raw |
| KernelVersion: 4.5 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Raw (unscaled no bias removal etc.) power measurement from |
| channel Y. The number must always be specified and |
| unique to allow association with event codes. Units after |
| application of scale and offset are milliwatts. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_capacitanceY_raw |
| KernelVersion: 3.2 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Raw capacitance measurement from channel Y. Units after |
| application of scale and offset are nanofarads. |
| |
| What: /sys/.../iio:deviceX/in_capacitanceY-in_capacitanceZ_raw |
| KernelVersion: 3.2 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Raw differential capacitance measurement equivalent to |
| channel Y - channel Z where these channel numbers apply to the |
| physically equivalent inputs when non differential readings are |
| separately available. In differential only parts, then all that |
| is required is a consistent labeling. Units after application |
| of scale and offset are nanofarads. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_temp_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_tempX_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_temp_x_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_temp_y_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_temp_ambient_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_raw |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Raw (unscaled no bias removal etc.) temperature measurement. |
| If an axis is specified it generally means that the temperature |
| sensor is associated with one part of a compound device (e.g. |
| a gyroscope axis). The ambient and object modifiers distinguish |
| between ambient (reference) and distant temperature for contact- |
| less measurements. Units after application of scale and offset |
| are milli degrees Celsius. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_tempX_input |
| KernelVersion: 2.6.38 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Scaled temperature measurement in milli degrees Celsius. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_raw |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Acceleration in direction x, y or z (may be arbitrarily assigned |
| but should match other such assignments on device). |
| Has all of the equivalent parameters as per voltageY. Units |
| after application of scale and offset are m/s^2. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_gravity_x_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_gravity_y_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_gravity_z_raw |
| KernelVersion: 4.11 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Gravity in direction x, y or z (may be arbitrarily assigned |
| but should match other such assignments on device). |
| Units after application of scale and offset are m/s^2. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_raw |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Angular velocity about axis x, y or z (may be arbitrarily |
| assigned). Has all the equivalent parameters as per voltageY. |
| Units after application of scale and offset are radians per |
| second. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_incli_x_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_incli_y_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_incli_z_raw |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Inclination raw reading about axis x, y or z (may be |
| arbitrarily assigned). Data converted by application of offset |
| and scale to degrees. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_raw |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Magnetic field along axis x, y or z (may be arbitrarily |
| assigned). Data converted by application of offset |
| then scale to Gauss. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_peak_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_peak_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_peak_raw |
| KernelVersion: 2.6.36 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Highest value since some reset condition. These |
| attributes allow access to this and are otherwise |
| the direct equivalent of the <type>Y[_name]_raw attributes. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_accel_xyz_squared_peak_raw |
| KernelVersion: 2.6.36 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| A computed peak value based on the sum squared magnitude of |
| the underlying value in the specified directions. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_pressure_raw |
| KernelVersion: 3.8 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Raw pressure measurement from channel Y. Units after |
| application of scale and offset are kilopascal. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_input |
| What: /sys/bus/iio/devices/iio:deviceX/in_pressure_input |
| KernelVersion: 3.8 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Scaled pressure measurement from channel Y, in kilopascal. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_raw |
| KernelVersion: 3.14 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Raw humidity measurement of air. Units after application of |
| scale and offset are milli percent. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_input |
| KernelVersion: 3.14 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Scaled humidity measurement in milli percent. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_X_mean_raw |
| KernelVersion: 3.5 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Averaged raw measurement from channel X. The number of values |
| used for averaging is device specific. The converting rules for |
| normal raw values also applies to the averaged raw values. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_accel_offset |
| What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_offset |
| What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_offset |
| What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_offset |
| What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_offset |
| What: /sys/bus/iio/devices/iio:deviceX/in_voltage_offset |
| What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_offset |
| What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_offset |
| What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_offset |
| What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_offset |
| What: /sys/bus/iio/devices/iio:deviceX/in_currentY_offset |
| What: /sys/bus/iio/devices/iio:deviceX/in_current_offset |
| What: /sys/bus/iio/devices/iio:deviceX/in_currentY_i_offset |
| What: /sys/bus/iio/devices/iio:deviceX/in_currentY_q_offset |
| What: /sys/bus/iio/devices/iio:deviceX/in_current_q_offset |
| What: /sys/bus/iio/devices/iio:deviceX/in_current_i_offset |
| What: /sys/bus/iio/devices/iio:deviceX/in_tempY_offset |
| What: /sys/bus/iio/devices/iio:deviceX/in_temp_offset |
| What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_offset |
| What: /sys/bus/iio/devices/iio:deviceX/in_pressure_offset |
| What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_offset |
| What: /sys/bus/iio/devices/iio:deviceX/in_magn_offset |
| What: /sys/bus/iio/devices/iio:deviceX/in_rot_offset |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| If known for a device, offset to be added to <type>[Y]_raw prior |
| to scaling by <type>[Y]_scale in order to obtain value in the |
| <type> units as specified in <type>[Y]_raw documentation. |
| Not present if the offset is always 0 or unknown. If Y or |
| axis <x|y|z> is not present, then the offset applies to all |
| in channels of <type>. |
| May be writable if a variable offset can be applied on the |
| device. Note that this is different to calibbias which |
| is for devices (or drivers) that apply offsets to compensate |
| for variation between different instances of the part, typically |
| adjusted by using some hardware supported calibration procedure. |
| Calibbias is applied internally, offset is applied in userspace |
| to the _raw output. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_voltage_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_scale |
| What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_scale |
| What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_currentY_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_current_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_currentY_i_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_currentY_q_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_current_i_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_current_q_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_accel_peak_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_energy_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_distance_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_magn_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_pressure_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_scale |
| What: /sys/bus/iio/devices/iio:deviceX/in_countY_scale |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| If known for a device, scale to be applied to <type>Y[_name]_raw |
| post addition of <type>[Y][_name]_offset in order to obtain the |
| measured value in <type> units as specified in |
| <type>[Y][_name]_raw documentation. If shared across all in |
| channels then Y and <x|y|z> are not present and the value is |
| called <type>[Y][_name]_scale. The peak modifier means this |
| value is applied to <type>Y[_name]_peak_raw values. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibbias |
| What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibbias |
| What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibbias |
| What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibbias |
| What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibbias |
| What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibbias |
| What: /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibbias |
| What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibbias |
| What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibbias |
| What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibbias |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Hardware applied calibration offset (assumed to fix production |
| inaccuracies). |
| |
| What /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale |
| What /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_calibscale |
| What /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_calibscale |
| What /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_calibscale |
| What /sys/bus/iio/devices/iio:deviceX/in_voltage_i_calibscale |
| What /sys/bus/iio/devices/iio:deviceX/in_voltage_q_calibscale |
| What /sys/bus/iio/devices/iio:deviceX/in_voltage_calibscale |
| What /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibscale |
| What /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibscale |
| What /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibscale |
| What /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibscale |
| What /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibscale |
| What /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibscale |
| what /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibscale |
| what /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibscale |
| What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibscale |
| What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibscale |
| What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_calibscale |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Hardware applied calibration scale factor (assumed to fix |
| production inaccuracies). If shared across all channels, |
| <type>_calibscale is used. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender |
| What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender |
| What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender |
| What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender |
| KernelVersion: 4.0 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Gender of the user (e.g.: male, female) used by some pedometers |
| to compute the stride length, distance, speed and activity |
| type. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender_available |
| What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender_available |
| What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender_available |
| What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender_available |
| KernelVersion: 4.0 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Lists all available gender values (e.g.: male, female). |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibheight |
| What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibheight |
| What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibheight |
| What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibheight |
| KernelVersion: 3.19 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Height of the user (in meters) used by some pedometers |
| to compute the stride length, distance, speed and activity |
| type. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibweight |
| KernelVersion: 4.0 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Weight of the user (in kg). It is needed by some pedometers |
| to compute the calories burnt by the user. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale_available |
| What: /sys/.../iio:deviceX/in_anglvel_scale_available |
| What: /sys/.../iio:deviceX/in_magn_scale_available |
| What: /sys/.../iio:deviceX/in_illuminance_scale_available |
| What: /sys/.../iio:deviceX/in_intensity_scale_available |
| What: /sys/.../iio:deviceX/in_proximity_scale_available |
| What: /sys/.../iio:deviceX/in_voltageX_scale_available |
| What: /sys/.../iio:deviceX/in_voltage-voltage_scale_available |
| What: /sys/.../iio:deviceX/out_voltageX_scale_available |
| What: /sys/.../iio:deviceX/out_altvoltageX_scale_available |
| What: /sys/.../iio:deviceX/in_capacitance_scale_available |
| What: /sys/.../iio:deviceX/in_pressure_scale_available |
| What: /sys/.../iio:deviceX/in_pressureY_scale_available |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| If a discrete set of scale values is available, they |
| are listed in this attribute. |
| |
| What /sys/bus/iio/devices/iio:deviceX/out_voltageY_hardwaregain |
| What: /sys/bus/iio/devices/iio:deviceX/in_intensity_red_hardwaregain |
| What: /sys/bus/iio/devices/iio:deviceX/in_intensity_green_hardwaregain |
| What: /sys/bus/iio/devices/iio:deviceX/in_intensity_blue_hardwaregain |
| What: /sys/bus/iio/devices/iio:deviceX/in_intensity_clear_hardwaregain |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Hardware applied gain factor. If shared across all channels, |
| <type>_hardwaregain is used. |
| |
| What: /sys/.../in_accel_filter_low_pass_3db_frequency |
| What: /sys/.../in_magn_filter_low_pass_3db_frequency |
| What: /sys/.../in_anglvel_filter_low_pass_3db_frequency |
| KernelVersion: 3.2 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| If a known or controllable low pass filter is applied |
| to the underlying data channel, then this parameter |
| gives the 3dB frequency of the filter in Hz. |
| |
| What: /sys/.../in_accel_filter_high_pass_3db_frequency |
| What: /sys/.../in_anglvel_filter_high_pass_3db_frequency |
| What: /sys/.../in_magn_filter_high_pass_3db_frequency |
| KernelVersion: 4.2 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| If a known or controllable high pass filter is applied |
| to the underlying data channel, then this parameter |
| gives the 3dB frequency of the filter in Hz. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_raw |
| What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_raw |
| KernelVersion: 2.6.37 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Raw (unscaled, no bias etc.) output voltage for |
| channel Y. The number must always be specified and |
| unique if the output corresponds to a single channel. |
| While DAC like devices typically use out_voltage, |
| a continuous frequency generating device, such as |
| a DDS or PLL should use out_altvoltage. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/out_voltageY&Z_raw |
| What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY&Z_raw |
| KernelVersion: 2.6.37 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Raw (unscaled, no bias etc.) output voltage for an aggregate of |
| channel Y, channel Z, etc. This interface is available in cases |
| where a single output sets the value for multiple channels |
| simultaneously. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown_mode |
| What: /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown_mode |
| What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown_mode |
| What: /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown_mode |
| KernelVersion: 2.6.38 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Specifies the output powerdown mode. |
| DAC output stage is disconnected from the amplifier and |
| 1kohm_to_gnd: connected to ground via an 1kOhm resistor, |
| 6kohm_to_gnd: connected to ground via a 6kOhm resistor, |
| 20kohm_to_gnd: connected to ground via a 20kOhm resistor, |
| 90kohm_to_gnd: connected to ground via a 90kOhm resistor, |
| 100kohm_to_gnd: connected to ground via an 100kOhm resistor, |
| 125kohm_to_gnd: connected to ground via an 125kOhm resistor, |
| 500kohm_to_gnd: connected to ground via a 500kOhm resistor, |
| 640kohm_to_gnd: connected to ground via a 640kOhm resistor, |
| three_state: left floating. |
| For a list of available output power down options read |
| outX_powerdown_mode_available. If Y is not present the |
| mode is shared across all outputs. |
| |
| What: /sys/.../iio:deviceX/out_voltageY_powerdown_mode_available |
| What: /sys/.../iio:deviceX/out_voltage_powerdown_mode_available |
| What: /sys/.../iio:deviceX/out_altvoltageY_powerdown_mode_available |
| What: /sys/.../iio:deviceX/out_altvoltage_powerdown_mode_available |
| KernelVersion: 2.6.38 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Lists all available output power down modes. |
| If Y is not present the mode is shared across all outputs. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown |
| What: /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown |
| What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown |
| What: /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown |
| KernelVersion: 2.6.38 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Writing 1 causes output Y to enter the power down mode specified |
| by the corresponding outY_powerdown_mode. DAC output stage is |
| disconnected from the amplifier. Clearing returns to normal |
| operation. Y may be suppressed if all outputs are controlled |
| together. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency |
| KernelVersion: 3.4.0 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Output frequency for channel Y in Hz. The number must always be |
| specified and unique if the output corresponds to a single |
| channel. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_phase |
| KernelVersion: 3.4.0 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Phase in radians of one frequency/clock output Y |
| (out_altvoltageY) relative to another frequency/clock output |
| (out_altvoltageZ) of the device X. The number must always be |
| specified and unique if the output corresponds to a single |
| channel. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/events |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Configuration of which hardware generated events are passed up |
| to user-space. |
| |
| What: /sys/.../iio:deviceX/events/in_accel_x_thresh_rising_en |
| What: /sys/.../iio:deviceX/events/in_accel_x_thresh_falling_en |
| What: /sys/.../iio:deviceX/events/in_accel_y_thresh_rising_en |
| What: /sys/.../iio:deviceX/events/in_accel_y_thresh_falling_en |
| What: /sys/.../iio:deviceX/events/in_accel_z_thresh_rising_en |
| What: /sys/.../iio:deviceX/events/in_accel_z_thresh_falling_en |
| What: /sys/.../iio:deviceX/events/in_anglvel_x_thresh_rising_en |
| What: /sys/.../iio:deviceX/events/in_anglvel_x_thresh_falling_en |
| What: /sys/.../iio:deviceX/events/in_anglvel_y_thresh_rising_en |
| What: /sys/.../iio:deviceX/events/in_anglvel_y_thresh_falling_en |
| What: /sys/.../iio:deviceX/events/in_anglvel_z_thresh_rising_en |
| What: /sys/.../iio:deviceX/events/in_anglvel_z_thresh_falling_en |
| What: /sys/.../iio:deviceX/events/in_magn_x_thresh_rising_en |
| What: /sys/.../iio:deviceX/events/in_magn_x_thresh_falling_en |
| What: /sys/.../iio:deviceX/events/in_magn_y_thresh_rising_en |
| What: /sys/.../iio:deviceX/events/in_magn_y_thresh_falling_en |
| What: /sys/.../iio:deviceX/events/in_magn_z_thresh_rising_en |
| What: /sys/.../iio:deviceX/events/in_magn_z_thresh_falling_en |
| What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_rising_en |
| What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_falling_en |
| What: /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_rising_en |
| What: /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_falling_en |
| What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_en |
| What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_en |
| What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_rising_en |
| What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_falling_en |
| What: /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_rising_en |
| What: /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_falling_en |
| What: /sys/.../iio:deviceX/events/in_voltageY_thresh_rising_en |
| What: /sys/.../iio:deviceX/events/in_voltageY_thresh_falling_en |
| What: /sys/.../iio:deviceX/events/in_voltageY_thresh_either_en |
| What: /sys/.../iio:deviceX/events/in_tempY_thresh_rising_en |
| What: /sys/.../iio:deviceX/events/in_tempY_thresh_falling_en |
| KernelVersion: 2.6.37 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Event generated when channel passes a threshold in the specified |
| (_rising|_falling) direction. If the direction is not specified, |
| then either the device will report an event which ever direction |
| a single threshold value is passed in (e.g. |
| <type>[Y][_name]_<raw|input>_thresh_value) or |
| <type>[Y][_name]_<raw|input>_thresh_rising_value and |
| <type>[Y][_name]_<raw|input>_thresh_falling_value may take |
| different values, but the device can only enable both thresholds |
| or neither. |
| Note the driver will assume the last p events requested are |
| to be enabled where p is how many it supports (which may vary |
| depending on the exact set requested. So if you want to be |
| sure you have set what you think you have, check the contents of |
| these attributes after everything is configured. Drivers may |
| have to buffer any parameters so that they are consistent when |
| a given event type is enabled at a future point (and not those for |
| whatever event was previously enabled). |
| |
| What: /sys/.../iio:deviceX/events/in_accel_x_roc_rising_en |
| What: /sys/.../iio:deviceX/events/in_accel_x_roc_falling_en |
| What: /sys/.../iio:deviceX/events/in_accel_y_roc_rising_en |
| What: /sys/.../iio:deviceX/events/in_accel_y_roc_falling_en |
| What: /sys/.../iio:deviceX/events/in_accel_z_roc_rising_en |
| What: /sys/.../iio:deviceX/events/in_accel_z_roc_falling_en |
| What: /sys/.../iio:deviceX/events/in_anglvel_x_roc_rising_en |
| What: /sys/.../iio:deviceX/events/in_anglvel_x_roc_falling_en |
| What: /sys/.../iio:deviceX/events/in_anglvel_y_roc_rising_en |
| What: /sys/.../iio:deviceX/events/in_anglvel_y_roc_falling_en |
| What: /sys/.../iio:deviceX/events/in_anglvel_z_roc_rising_en |
| What: /sys/.../iio:deviceX/events/in_anglvel_z_roc_falling_en |
| What: /sys/.../iio:deviceX/events/in_magn_x_roc_rising_en |
| What: /sys/.../iio:deviceX/events/in_magn_x_roc_falling_en |
| What: /sys/.../iio:deviceX/events/in_magn_y_roc_rising_en |
| What: /sys/.../iio:deviceX/events/in_magn_y_roc_falling_en |
| What: /sys/.../iio:deviceX/events/in_magn_z_roc_rising_en |
| What: /sys/.../iio:deviceX/events/in_magn_z_roc_falling_en |
| What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_rising_en |
| What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_falling_en |
| What: /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_rising_en |
| What: /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_falling_en |
| What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_rising_en |
| What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_falling_en |
| What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_rising_en |
| What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_falling_en |
| What: /sys/.../iio:deviceX/events/in_voltageY_supply_roc_rising_en |
| What: /sys/.../iio:deviceX/events/in_voltageY_supply_roc_falling_en |
| What: /sys/.../iio:deviceX/events/in_voltageY_roc_rising_en |
| What: /sys/.../iio:deviceX/events/in_voltageY_roc_falling_en |
| What: /sys/.../iio:deviceX/events/in_tempY_roc_rising_en |
| What: /sys/.../iio:deviceX/events/in_tempY_roc_falling_en |
| KernelVersion: 2.6.37 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Event generated when channel passes a threshold on the rate of |
| change (1st differential) in the specified (_rising|_falling) |
| direction. If the direction is not specified, then either the |
| device will report an event which ever direction a single |
| threshold value is passed in (e.g. |
| <type>[Y][_name]_<raw|input>_roc_value) or |
| <type>[Y][_name]_<raw|input>_roc_rising_value and |
| <type>[Y][_name]_<raw|input>_roc_falling_value may take |
| different values, but the device can only enable both rate of |
| change thresholds or neither. |
| Note the driver will assume the last p events requested are |
| to be enabled where p is however many it supports (which may |
| vary depending on the exact set requested. So if you want to be |
| sure you have set what you think you have, check the contents of |
| these attributes after everything is configured. Drivers may |
| have to buffer any parameters so that they are consistent when |
| a given event type is enabled a future point (and not those for |
| whatever event was previously enabled). |
| |
| What: /sys/.../events/in_accel_thresh_rising_value |
| What: /sys/.../events/in_accel_thresh_falling_value |
| What: /sys/.../events/in_accel_x_raw_thresh_rising_value |
| What: /sys/.../events/in_accel_x_raw_thresh_falling_value |
| What: /sys/.../events/in_accel_y_raw_thresh_rising_value |
| What: /sys/.../events/in_accel_y_raw_thresh_falling_value |
| What: /sys/.../events/in_accel_z_raw_thresh_rising_value |
| What: /sys/.../events/in_accel_z_raw_thresh_falling_value |
| What: /sys/.../events/in_anglvel_x_raw_thresh_rising_value |
| What: /sys/.../events/in_anglvel_x_raw_thresh_falling_value |
| What: /sys/.../events/in_anglvel_y_raw_thresh_rising_value |
| What: /sys/.../events/in_anglvel_y_raw_thresh_falling_value |
| What: /sys/.../events/in_anglvel_z_raw_thresh_rising_value |
| What: /sys/.../events/in_anglvel_z_raw_thresh_falling_value |
| What: /sys/.../events/in_magn_x_raw_thresh_rising_value |
| What: /sys/.../events/in_magn_x_raw_thresh_falling_value |
| What: /sys/.../events/in_magn_y_raw_thresh_rising_value |
| What: /sys/.../events/in_magn_y_raw_thresh_falling_value |
| What: /sys/.../events/in_magn_z_raw_thresh_rising_value |
| What: /sys/.../events/in_magn_z_raw_thresh_falling_value |
| What: /sys/.../events/in_rot_from_north_magnetic_raw_thresh_rising_value |
| What: /sys/.../events/in_rot_from_north_magnetic_raw_thresh_falling_value |
| What: /sys/.../events/in_rot_from_north_true_raw_thresh_rising_value |
| What: /sys/.../events/in_rot_from_north_true_raw_thresh_falling_value |
| What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_rising_value |
| What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_falling_value |
| What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_rising_value |
| What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_falling_value |
| What: /sys/.../events/in_voltageY_supply_raw_thresh_rising_value |
| What: /sys/.../events/in_voltageY_supply_raw_thresh_falling_value |
| What: /sys/.../events/in_voltageY_raw_thresh_rising_value |
| What: /sys/.../events/in_voltageY_raw_thresh_falling_value |
| What: /sys/.../events/in_tempY_raw_thresh_rising_value |
| What: /sys/.../events/in_tempY_raw_thresh_falling_value |
| What: /sys/.../events/in_illuminance0_thresh_falling_value |
| what: /sys/.../events/in_illuminance0_thresh_rising_value |
| what: /sys/.../events/in_proximity0_thresh_falling_value |
| what: /sys/.../events/in_proximity0_thresh_rising_value |
| KernelVersion: 2.6.37 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Specifies the value of threshold that the device is comparing |
| against for the events enabled by |
| <type>Y[_name]_thresh[_rising|falling]_en. |
| If separate attributes exist for the two directions, but |
| direction is not specified for this attribute, then a single |
| threshold value applies to both directions. |
| The raw or input element of the name indicates whether the |
| value is in raw device units or in processed units (as _raw |
| and _input do on sysfs direct channel read attributes). |
| |
| What: /sys/.../events/in_accel_scale |
| What: /sys/.../events/in_accel_peak_scale |
| What: /sys/.../events/in_anglvel_scale |
| What: /sys/.../events/in_magn_scale |
| What: /sys/.../events/in_rot_from_north_magnetic_scale |
| What: /sys/.../events/in_rot_from_north_true_scale |
| What: /sys/.../events/in_voltage_scale |
| What: /sys/.../events/in_voltage_supply_scale |
| What: /sys/.../events/in_temp_scale |
| What: /sys/.../events/in_illuminance_scale |
| What: /sys/.../events/in_proximity_scale |
| KernelVersion: 3.21 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Specifies the conversion factor from the standard units |
| to device specific units used to set the event trigger |
| threshold. |
| |
| What: /sys/.../events/in_accel_x_thresh_rising_hysteresis |
| What: /sys/.../events/in_accel_x_thresh_falling_hysteresis |
| What: /sys/.../events/in_accel_x_thresh_either_hysteresis |
| What: /sys/.../events/in_accel_y_thresh_rising_hysteresis |
| What: /sys/.../events/in_accel_y_thresh_falling_hysteresis |
| What: /sys/.../events/in_accel_y_thresh_either_hysteresis |
| What: /sys/.../events/in_accel_z_thresh_rising_hysteresis |
| What: /sys/.../events/in_accel_z_thresh_falling_hysteresis |
| What: /sys/.../events/in_accel_z_thresh_either_hysteresis |
| What: /sys/.../events/in_anglvel_x_thresh_rising_hysteresis |
| What: /sys/.../events/in_anglvel_x_thresh_falling_hysteresis |
| What: /sys/.../events/in_anglvel_x_thresh_either_hysteresis |
| What: /sys/.../events/in_anglvel_y_thresh_rising_hysteresis |
| What: /sys/.../events/in_anglvel_y_thresh_falling_hysteresis |
| What: /sys/.../events/in_anglvel_y_thresh_either_hysteresis |
| What: /sys/.../events/in_anglvel_z_thresh_rising_hysteresis |
| What: /sys/.../events/in_anglvel_z_thresh_falling_hysteresis |
| What: /sys/.../events/in_anglvel_z_thresh_either_hysteresis |
| What: /sys/.../events/in_magn_x_thresh_rising_hysteresis |
| What: /sys/.../events/in_magn_x_thresh_falling_hysteresis |
| What: /sys/.../events/in_magn_x_thresh_either_hysteresis |
| What: /sys/.../events/in_magn_y_thresh_rising_hysteresis |
| What: /sys/.../events/in_magn_y_thresh_falling_hysteresis |
| What: /sys/.../events/in_magn_y_thresh_either_hysteresis |
| What: /sys/.../events/in_magn_z_thresh_rising_hysteresis |
| What: /sys/.../events/in_magn_z_thresh_falling_hysteresis |
| What: /sys/.../events/in_magn_z_thresh_either_hysteresis |
| What: /sys/.../events/in_rot_from_north_magnetic_thresh_rising_hysteresis |
| What: /sys/.../events/in_rot_from_north_magnetic_thresh_falling_hysteresis |
| What: /sys/.../events/in_rot_from_north_magnetic_thresh_either_hysteresis |
| What: /sys/.../events/in_rot_from_north_true_thresh_rising_hysteresis |
| What: /sys/.../events/in_rot_from_north_true_thresh_falling_hysteresis |
| What: /sys/.../events/in_rot_from_north_true_thresh_either_hysteresis |
| What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_hysteresis |
| What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_hysteresis |
| What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_either_hysteresis |
| What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_hysteresis |
| What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_hysteresis |
| What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_either_hysteresis |
| What: /sys/.../events/in_voltageY_thresh_rising_hysteresis |
| What: /sys/.../events/in_voltageY_thresh_falling_hysteresis |
| What: /sys/.../events/in_voltageY_thresh_either_hysteresis |
| What: /sys/.../events/in_tempY_thresh_rising_hysteresis |
| What: /sys/.../events/in_tempY_thresh_falling_hysteresis |
| What: /sys/.../events/in_tempY_thresh_either_hysteresis |
| What: /sys/.../events/in_illuminance0_thresh_falling_hysteresis |
| what: /sys/.../events/in_illuminance0_thresh_rising_hysteresis |
| what: /sys/.../events/in_illuminance0_thresh_either_hysteresis |
| what: /sys/.../events/in_proximity0_thresh_falling_hysteresis |
| what: /sys/.../events/in_proximity0_thresh_rising_hysteresis |
| what: /sys/.../events/in_proximity0_thresh_either_hysteresis |
| KernelVersion: 3.13 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Specifies the hysteresis of threshold that the device is comparing |
| against for the events enabled by |
| <type>Y[_name]_thresh[_(rising|falling)]_hysteresis. |
| If separate attributes exist for the two directions, but |
| direction is not specified for this attribute, then a single |
| hysteresis value applies to both directions. |
| For falling events the hysteresis is added to the _value attribute for |
| this event to get the upper threshold for when the event goes back to |
| normal, for rising events the hysteresis is subtracted from the _value |
| attribute. E.g. if in_voltage0_raw_thresh_rising_value is set to 1200 |
| and in_voltage0_raw_thresh_rising_hysteresis is set to 50. The event |
| will get activated once in_voltage0_raw goes above 1200 and will become |
| deactivated again once the value falls below 1150. |
| |
| What: /sys/.../events/in_accel_x_raw_roc_rising_value |
| What: /sys/.../events/in_accel_x_raw_roc_falling_value |
| What: /sys/.../events/in_accel_y_raw_roc_rising_value |
| What: /sys/.../events/in_accel_y_raw_roc_falling_value |
| What: /sys/.../events/in_accel_z_raw_roc_rising_value |
| What: /sys/.../events/in_accel_z_raw_roc_falling_value |
| What: /sys/.../events/in_anglvel_x_raw_roc_rising_value |
| What: /sys/.../events/in_anglvel_x_raw_roc_falling_value |
| What: /sys/.../events/in_anglvel_y_raw_roc_rising_value |
| What: /sys/.../events/in_anglvel_y_raw_roc_falling_value |
| What: /sys/.../events/in_anglvel_z_raw_roc_rising_value |
| What: /sys/.../events/in_anglvel_z_raw_roc_falling_value |
| What: /sys/.../events/in_magn_x_raw_roc_rising_value |
| What: /sys/.../events/in_magn_x_raw_roc_falling_value |
| What: /sys/.../events/in_magn_y_raw_roc_rising_value |
| What: /sys/.../events/in_magn_y_raw_roc_falling_value |
| What: /sys/.../events/in_magn_z_raw_roc_rising_value |
| What: /sys/.../events/in_magn_z_raw_roc_falling_value |
| What: /sys/.../events/in_rot_from_north_magnetic_raw_roc_rising_value |
| What: /sys/.../events/in_rot_from_north_magnetic_raw_roc_falling_value |
| What: /sys/.../events/in_rot_from_north_true_raw_roc_rising_value |
| What: /sys/.../events/in_rot_from_north_true_raw_roc_falling_value |
| What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_rising_value |
| What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_falling_value |
| What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_rising_value |
| What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_falling_value |
| What: /sys/.../events/in_voltageY_supply_raw_roc_rising_value |
| What: /sys/.../events/in_voltageY_supply_raw_roc_falling_value |
| What: /sys/.../events/in_voltageY_raw_roc_rising_value |
| What: /sys/.../events/in_voltageY_raw_roc_falling_value |
| What: /sys/.../events/in_tempY_raw_roc_rising_value |
| What: /sys/.../events/in_tempY_raw_roc_falling_value |
| KernelVersion: 2.6.37 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Specifies the value of rate of change threshold that the |
| device is comparing against for the events enabled by |
| <type>[Y][_name]_roc[_rising|falling]_en. |
| If separate attributes exist for the two directions, |
| but direction is not specified for this attribute, |
| then a single threshold value applies to both directions. |
| The raw or input element of the name indicates whether the |
| value is in raw device units or in processed units (as _raw |
| and _input do on sysfs direct channel read attributes). |
| |
| What: /sys/.../events/in_accel_x_thresh_rising_period |
| What: /sys/.../events/in_accel_x_thresh_falling_period |
| What: /sys/.../events/in_accel_x_roc_rising_period |
| What: /sys/.../events/in_accel_x_roc_falling_period |
| What: /sys/.../events/in_accel_y_thresh_rising_period |
| What: /sys/.../events/in_accel_y_thresh_falling_period |
| What: /sys/.../events/in_accel_y_roc_rising_period |
| What: /sys/.../events/in_accel_y_roc_falling_period |
| What: /sys/.../events/in_accel_z_thresh_rising_period |
| What: /sys/.../events/in_accel_z_thresh_falling_period |
| What: /sys/.../events/in_accel_z_roc_rising_period |
| What: /sys/.../events/in_accel_z_roc_falling_period |
| What: /sys/.../events/in_anglvel_x_thresh_rising_period |
| What: /sys/.../events/in_anglvel_x_thresh_falling_period |
| What: /sys/.../events/in_anglvel_x_roc_rising_period |
| What: /sys/.../events/in_anglvel_x_roc_falling_period |
| What: /sys/.../events/in_anglvel_y_thresh_rising_period |
| What: /sys/.../events/in_anglvel_y_thresh_falling_period |
| What: /sys/.../events/in_anglvel_y_roc_rising_period |
| What: /sys/.../events/in_anglvel_y_roc_falling_period |
| What: /sys/.../events/in_anglvel_z_thresh_rising_period |
| What: /sys/.../events/in_anglvel_z_thresh_falling_period |
| What: /sys/.../events/in_anglvel_z_roc_rising_period |
| What: /sys/.../events/in_anglvel_z_roc_falling_period |
| What: /sys/.../events/in_magn_x_thresh_rising_period |
| What: /sys/.../events/in_magn_x_thresh_falling_period |
| What: /sys/.../events/in_magn_x_roc_rising_period |
| What: /sys/.../events/in_magn_x_roc_falling_period |
| What: /sys/.../events/in_magn_y_thresh_rising_period |
| What: /sys/.../events/in_magn_y_thresh_falling_period |
| What: /sys/.../events/in_magn_y_roc_rising_period |
| What: /sys/.../events/in_magn_y_roc_falling_period |
| What: /sys/.../events/in_magn_z_thresh_rising_period |
| What: /sys/.../events/in_magn_z_thresh_falling_period |
| What: /sys/.../events/in_magn_z_roc_rising_period |
| What: /sys/.../events/in_magn_z_roc_falling_period |
| What: /sys/.../events/in_rot_from_north_magnetic_thresh_rising_period |
| What: /sys/.../events/in_rot_from_north_magnetic_thresh_falling_period |
| What: /sys/.../events/in_rot_from_north_magnetic_roc_rising_period |
| What: /sys/.../events/in_rot_from_north_magnetic_roc_falling_period |
| What: /sys/.../events/in_rot_from_north_true_thresh_rising_period |
| What: /sys/.../events/in_rot_from_north_true_thresh_falling_period |
| What: /sys/.../events/in_rot_from_north_true_roc_rising_period |
| What: /sys/.../events/in_rot_from_north_true_roc_falling_period |
| What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_period |
| What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_period |
| What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_rising_period |
| What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_falling_period |
| What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_period |
| What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_period |
| What: /sys/.../events/in_rot_from_north_true_tilt_comp_roc_rising_period |
| What: /sys/.../events/in_rot_from_north_true_tilt_comp_roc_falling_period |
| What: /sys/.../events/in_voltageY_supply_thresh_rising_period |
| What: /sys/.../events/in_voltageY_supply_thresh_falling_period |
| What: /sys/.../events/in_voltageY_supply_roc_rising_period |
| What: /sys/.../events/in_voltageY_supply_roc_falling_period |
| What: /sys/.../events/in_voltageY_thresh_rising_period |
| What: /sys/.../events/in_voltageY_thresh_falling_period |
| What: /sys/.../events/in_voltageY_roc_rising_period |
| What: /sys/.../events/in_voltageY_roc_falling_period |
| What: /sys/.../events/in_tempY_thresh_rising_period |
| What: /sys/.../events/in_tempY_thresh_falling_period |
| What: /sys/.../events/in_tempY_roc_rising_period |
| What: /sys/.../events/in_tempY_roc_falling_period |
| What: /sys/.../events/in_accel_x&y&z_mag_falling_period |
| What: /sys/.../events/in_intensity0_thresh_period |
| What: /sys/.../events/in_proximity0_thresh_period |
| What: /sys/.../events/in_activity_still_thresh_rising_period |
| What: /sys/.../events/in_activity_still_thresh_falling_period |
| What: /sys/.../events/in_activity_walking_thresh_rising_period |
| What: /sys/.../events/in_activity_walking_thresh_falling_period |
| What: /sys/.../events/in_activity_jogging_thresh_rising_period |
| What: /sys/.../events/in_activity_jogging_thresh_falling_period |
| What: /sys/.../events/in_activity_running_thresh_rising_period |
| What: /sys/.../events/in_activity_running_thresh_falling_period |
| KernelVersion: 2.6.37 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Period of time (in seconds) for which the condition must be |
| met before an event is generated. If direction is not |
| specified then this period applies to both directions. |
| |
| What: /sys/.../events/in_accel_thresh_rising_low_pass_filter_3db |
| What: /sys/.../events/in_anglvel_thresh_rising_low_pass_filter_3db |
| What: /sys/.../events/in_magn_thresh_rising_low_pass_filter_3db |
| KernelVersion: 4.2 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| If a low pass filter can be applied to the event generation |
| this property gives its 3db frequency in Hz. |
| A value of zero disables the filter. |
| |
| What: /sys/.../events/in_accel_thresh_rising_high_pass_filter_3db |
| What: /sys/.../events/in_anglvel_thresh_rising_high_pass_filter_3db |
| What: /sys/.../events/in_magn_thresh_rising_high_pass_filter_3db |
| KernelVersion: 4.2 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| If a high pass filter can be applied to the event generation |
| this property gives its 3db frequency in Hz. |
| A value of zero disables the filter. |
| |
| What: /sys/.../events/in_activity_still_thresh_rising_en |
| What: /sys/.../events/in_activity_still_thresh_falling_en |
| What: /sys/.../events/in_activity_walking_thresh_rising_en |
| What: /sys/.../events/in_activity_walking_thresh_falling_en |
| What: /sys/.../events/in_activity_jogging_thresh_rising_en |
| What: /sys/.../events/in_activity_jogging_thresh_falling_en |
| What: /sys/.../events/in_activity_running_thresh_rising_en |
| What: /sys/.../events/in_activity_running_thresh_falling_en |
| KernelVersion: 3.19 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Enables or disables activitity events. Depending on direction |
| an event is generated when sensor ENTERS or LEAVES a given state. |
| |
| What: /sys/.../events/in_activity_still_thresh_rising_value |
| What: /sys/.../events/in_activity_still_thresh_falling_value |
| What: /sys/.../events/in_activity_walking_thresh_rising_value |
| What: /sys/.../events/in_activity_walking_thresh_falling_value |
| What: /sys/.../events/in_activity_jogging_thresh_rising_value |
| What: /sys/.../events/in_activity_jogging_thresh_falling_value |
| What: /sys/.../events/in_activity_running_thresh_rising_value |
| What: /sys/.../events/in_activity_running_thresh_falling_value |
| KernelVersion: 3.19 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Confidence value (in units as percentage) to be used |
| for deciding when an event should be generated. E.g for |
| running: If the confidence value reported by the sensor |
| is greater than in_activity_running_thresh_rising_value |
| then the sensor ENTERS running state. Conversely, if the |
| confidence value reported by the sensor is lower than |
| in_activity_running_thresh_falling_value then the sensor |
| is LEAVING running state. |
| |
| What: /sys/.../iio:deviceX/events/in_accel_mag_en |
| What: /sys/.../iio:deviceX/events/in_accel_mag_rising_en |
| What: /sys/.../iio:deviceX/events/in_accel_mag_falling_en |
| What: /sys/.../iio:deviceX/events/in_accel_x_mag_en |
| What: /sys/.../iio:deviceX/events/in_accel_x_mag_rising_en |
| What: /sys/.../iio:deviceX/events/in_accel_x_mag_falling_en |
| What: /sys/.../iio:deviceX/events/in_accel_y_mag_en |
| What: /sys/.../iio:deviceX/events/in_accel_y_mag_rising_en |
| What: /sys/.../iio:deviceX/events/in_accel_y_mag_falling_en |
| What: /sys/.../iio:deviceX/events/in_accel_z_mag_en |
| What: /sys/.../iio:deviceX/events/in_accel_z_mag_rising_en |
| What: /sys/.../iio:deviceX/events/in_accel_z_mag_falling_en |
| What: /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_rising_en |
| What: /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_falling_en |
| KernelVersion: 2.6.37 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Similar to in_accel_x_thresh[_rising|_falling]_en, but here the |
| magnitude of the channel is compared to the threshold, not its |
| signed value. |
| |
| What: /sys/.../events/in_accel_raw_mag_value |
| What: /sys/.../events/in_accel_x_raw_mag_rising_value |
| What: /sys/.../events/in_accel_y_raw_mag_rising_value |
| What: /sys/.../events/in_accel_z_raw_mag_rising_value |
| KernelVersion: 2.6.37 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| The value to which the magnitude of the channel is compared. If |
| number or direction is not specified, applies to all channels of |
| this type. |
| |
| What: /sys/.../events/in_steps_change_en |
| KernelVersion: 4.0 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Event generated when channel passes a threshold on the absolute |
| change in value. E.g. for steps: a step change event is |
| generated each time the user takes N steps, where N is set using |
| in_steps_change_value. |
| |
| What: /sys/.../events/in_steps_change_value |
| KernelVersion: 4.0 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Specifies the value of change threshold that the |
| device is comparing against for the events enabled by |
| <type>[Y][_name]_roc[_rising|falling|]_en. E.g. for steps: |
| if set to 3, a step change event will be generated every 3 |
| steps. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/trigger/current_trigger |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| The name of the trigger source being used, as per string given |
| in /sys/class/iio/triggerY/name. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/buffer/length |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Number of scans contained by the buffer. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/buffer/enable |
| KernelVersion: 2.6.35 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Actually start the buffer capture up. Will start trigger |
| if first device and appropriate. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/scan_elements |
| KernelVersion: 2.6.37 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Directory containing interfaces for elements that will be |
| captured for a single triggered sample set in the buffer. |
| |
| What: /sys/.../iio:deviceX/scan_elements/in_accel_x_en |
| What: /sys/.../iio:deviceX/scan_elements/in_accel_y_en |
| What: /sys/.../iio:deviceX/scan_elements/in_accel_z_en |
| What: /sys/.../iio:deviceX/scan_elements/in_anglvel_x_en |
| What: /sys/.../iio:deviceX/scan_elements/in_anglvel_y_en |
| What: /sys/.../iio:deviceX/scan_elements/in_anglvel_z_en |
| What: /sys/.../iio:deviceX/scan_elements/in_magn_x_en |
| What: /sys/.../iio:deviceX/scan_elements/in_magn_y_en |
| What: /sys/.../iio:deviceX/scan_elements/in_magn_z_en |
| What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_en |
| What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_en |
| What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_en |
| What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_en |
| What: /sys/.../iio:deviceX/scan_elements/in_timestamp_en |
| What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_en |
| What: /sys/.../iio:deviceX/scan_elements/in_voltageY_en |
| What: /sys/.../iio:deviceX/scan_elements/in_voltageY-voltageZ_en |
| What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_en |
| What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_en |
| What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_en |
| What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_en |
| What: /sys/.../iio:deviceX/scan_elements/in_incli_x_en |
| What: /sys/.../iio:deviceX/scan_elements/in_incli_y_en |
| What: /sys/.../iio:deviceX/scan_elements/in_pressureY_en |
| What: /sys/.../iio:deviceX/scan_elements/in_pressure_en |
| What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_en |
| What: /sys/.../iio:deviceX/scan_elements/in_proximity_en |
| KernelVersion: 2.6.37 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Scan element control for triggered data capture. |
| |
| What: /sys/.../iio:deviceX/scan_elements/in_accel_type |
| What: /sys/.../iio:deviceX/scan_elements/in_anglvel_type |
| What: /sys/.../iio:deviceX/scan_elements/in_magn_type |
| What: /sys/.../iio:deviceX/scan_elements/in_incli_type |
| What: /sys/.../iio:deviceX/scan_elements/in_voltageY_type |
| What: /sys/.../iio:deviceX/scan_elements/in_voltage_type |
| What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_type |
| What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_type |
| What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_type |
| What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_type |
| What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_type |
| What: /sys/.../iio:deviceX/scan_elements/in_timestamp_type |
| What: /sys/.../iio:deviceX/scan_elements/in_pressureY_type |
| What: /sys/.../iio:deviceX/scan_elements/in_pressure_type |
| What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_type |
| What: /sys/.../iio:deviceX/scan_elements/in_proximity_type |
| KernelVersion: 2.6.37 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Description of the scan element data storage within the buffer |
| and hence the form in which it is read from user-space. |
| Form is [be|le]:[s|u]bits/storagebits[>>shift]. |
| be or le specifies big or little endian. s or u specifies if |
| signed (2's complement) or unsigned. bits is the number of bits |
| of data and storagebits is the space (after padding) that it |
| occupies in the buffer. shift if specified, is the shift that |
| needs to be applied prior to masking out unused bits. Some |
| devices put their data in the middle of the transferred elements |
| with additional information on both sides. Note that some |
| devices will have additional information in the unused bits |
| so to get a clean value, the bits value must be used to mask |
| the buffer output value appropriately. The storagebits value |
| also specifies the data alignment. So s48/64>>2 will be a |
| signed 48 bit integer stored in a 64 bit location aligned to |
| a 64 bit boundary. To obtain the clean value, shift right 2 |
| and apply a mask to zero the top 16 bits of the result. |
| For other storage combinations this attribute will be extended |
| appropriately. |
| |
| What: /sys/.../iio:deviceX/scan_elements/in_accel_type_available |
| KernelVersion: 2.6.37 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| If the type parameter can take one of a small set of values, |
| this attribute lists them. |
| |
| What: /sys/.../iio:deviceX/scan_elements/in_voltageY_index |
| What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_index |
| What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_index |
| What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_index |
| What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_index |
| What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_index |
| What: /sys/.../iio:deviceX/scan_elements/in_accel_x_index |
| What: /sys/.../iio:deviceX/scan_elements/in_accel_y_index |
| What: /sys/.../iio:deviceX/scan_elements/in_accel_z_index |
| What: /sys/.../iio:deviceX/scan_elements/in_anglvel_x_index |
| What: /sys/.../iio:deviceX/scan_elements/in_anglvel_y_index |
| What: /sys/.../iio:deviceX/scan_elements/in_anglvel_z_index |
| What: /sys/.../iio:deviceX/scan_elements/in_magn_x_index |
| What: /sys/.../iio:deviceX/scan_elements/in_magn_y_index |
| What: /sys/.../iio:deviceX/scan_elements/in_magn_z_index |
| What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_index |
| What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_index |
| What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_index |
| What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_index |
| What: /sys/.../iio:deviceX/scan_elements/in_incli_x_index |
| What: /sys/.../iio:deviceX/scan_elements/in_incli_y_index |
| What: /sys/.../iio:deviceX/scan_elements/in_timestamp_index |
| What: /sys/.../iio:deviceX/scan_elements/in_pressureY_index |
| What: /sys/.../iio:deviceX/scan_elements/in_pressure_index |
| What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_index |
| What: /sys/.../iio:deviceX/scan_elements/in_proximity_index |
| KernelVersion: 2.6.37 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| A single positive integer specifying the position of this |
| scan element in the buffer. Note these are not dependent on |
| what is enabled and may not be contiguous. Thus for user-space |
| to establish the full layout these must be used in conjunction |
| with all _en attributes to establish which channels are present, |
| and the relevant _type attributes to establish the data storage |
| format. |
| |
| What: /sys/.../iio:deviceX/in_activity_still_input |
| What: /sys/.../iio:deviceX/in_activity_walking_input |
| What: /sys/.../iio:deviceX/in_activity_jogging_input |
| What: /sys/.../iio:deviceX/in_activity_running_input |
| KernelVersion: 3.19 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| This attribute is used to read the confidence for an activity |
| expressed in units as percentage. |
| |
| What: /sys/.../iio:deviceX/in_anglvel_z_quadrature_correction_raw |
| KernelVersion: 2.6.38 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| This attribute is used to read the amount of quadrature error |
| present in the device at a given time. |
| |
| What: /sys/.../iio:deviceX/in_accelX_power_mode |
| KernelVersion: 3.11 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Specifies the chip power mode. |
| low_noise: reduce noise level from ADC, |
| low_power: enable low current consumption. |
| For a list of available output power modes read |
| in_accel_power_mode_available. |
| |
| What: /sys/.../iio:deviceX/in_energy_input |
| What: /sys/.../iio:deviceX/in_energy_raw |
| KernelVersion: 4.0 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| This attribute is used to read the energy value reported by the |
| device (e.g.: human activity sensors report energy burnt by the |
| user). Units after application of scale are Joules. |
| |
| What: /sys/.../iio:deviceX/in_distance_input |
| What: /sys/.../iio:deviceX/in_distance_raw |
| KernelVersion: 4.0 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| This attribute is used to read the distance covered by the user |
| since the last reboot while activated. Units after application |
| of scale are meters. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/store_eeprom |
| KernelVersion: 3.4.0 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Writing '1' stores the current device configuration into |
| on-chip EEPROM. After power-up or chip reset the device will |
| automatically load the saved configuration. |
| |
| What: /sys/.../iio:deviceX/in_proximity_raw |
| What: /sys/.../iio:deviceX/in_proximity_input |
| What: /sys/.../iio:deviceX/in_proximityY_raw |
| KernelVersion: 3.4 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Proximity measurement indicating that some |
| object is near the sensor, usually by observing |
| reflectivity of infrared or ultrasound emitted. |
| Often these sensors are unit less and as such conversion |
| to SI units is not possible. Higher proximity measurements |
| indicate closer objects, and vice versa. Units after |
| application of scale and offset are meters. |
| |
| What: /sys/.../iio:deviceX/in_illuminance_input |
| What: /sys/.../iio:deviceX/in_illuminance_raw |
| What: /sys/.../iio:deviceX/in_illuminanceY_input |
| What: /sys/.../iio:deviceX/in_illuminanceY_raw |
| What: /sys/.../iio:deviceX/in_illuminanceY_mean_raw |
| What: /sys/.../iio:deviceX/in_illuminance_ir_raw |
| What: /sys/.../iio:deviceX/in_illuminance_clear_raw |
| KernelVersion: 3.4 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Illuminance measurement, units after application of scale |
| and offset are lux. |
| |
| What: /sys/.../iio:deviceX/in_intensityY_raw |
| What: /sys/.../iio:deviceX/in_intensityY_ir_raw |
| What: /sys/.../iio:deviceX/in_intensityY_both_raw |
| What: /sys/.../iio:deviceX/in_intensityY_uv_raw |
| KernelVersion: 3.4 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Unit-less light intensity. Modifiers both and ir indicate |
| that measurements contains visible and infrared light |
| components or just infrared light, respectively. Modifier uv indicates |
| that measurements contain ultraviolet light components. |
| |
| What: /sys/.../iio:deviceX/in_uvindex_input |
| KernelVersion: 4.6 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| UV light intensity index measuring the human skin's response to |
| different wavelength of sunlight weighted according to the |
| standardised CIE Erythemal Action Spectrum. UV index values range |
| from 0 (low) to >=11 (extreme). |
| |
| What: /sys/.../iio:deviceX/in_intensity_red_integration_time |
| What: /sys/.../iio:deviceX/in_intensity_green_integration_time |
| What: /sys/.../iio:deviceX/in_intensity_blue_integration_time |
| What: /sys/.../iio:deviceX/in_intensity_clear_integration_time |
| What: /sys/.../iio:deviceX/in_illuminance_integration_time |
| KernelVersion: 3.12 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| This attribute is used to get/set the integration time in |
| seconds. |
| |
| What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_integration_time |
| KernelVersion: 4.0 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Number of seconds in which to compute speed. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_rot_quaternion_raw |
| KernelVersion: 3.15 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Raw value of quaternion components using a format |
| x y z w. Here x, y, and z component represents the axis about |
| which a rotation will occur and w component represents the |
| amount of rotation. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_raw |
| KernelVersion: 3.15 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Raw value of rotation from true/magnetic north measured with |
| or without compensation from tilt sensors. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_currentX_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_currentX_i_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_currentX_q_raw |
| KernelVersion: 3.18 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Raw current measurement from channel X. Units are in milliamps |
| after application of scale and offset. If no offset or scale is |
| present, output should be considered as processed with the |
| unit in milliamps. |
| |
| Channels with 'i' and 'q' modifiers always exist in pairs and both |
| channels refer to the same signal. The 'i' channel contains the in-phase |
| component of the signal while the 'q' channel contains the quadrature |
| component. |
| |
| What: /sys/.../iio:deviceX/in_energy_en |
| What: /sys/.../iio:deviceX/in_distance_en |
| What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_en |
| What: /sys/.../iio:deviceX/in_steps_en |
| KernelVersion: 3.19 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Activates a device feature that runs in firmware/hardware. |
| E.g. for steps: the pedometer saves power while not used; |
| when activated, it will count the steps taken by the user in |
| firmware and export them through in_steps_input. |
| |
| What: /sys/.../iio:deviceX/in_steps_input |
| KernelVersion: 3.19 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| This attribute is used to read the number of steps taken by the user |
| since the last reboot while activated. |
| |
| What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_input |
| What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_raw |
| KernelVersion: 3.19 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| This attribute is used to read the current speed value of the |
| user (which is the norm or magnitude of the velocity vector). |
| Units after application of scale are m/s. |
| |
| What: /sys/.../iio:deviceX/in_steps_debounce_count |
| KernelVersion: 4.0 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Specifies the number of steps that must occur within |
| in_steps_filter_debounce_time for the pedometer to decide the |
| consumer is making steps. |
| |
| What: /sys/.../iio:deviceX/in_steps_debounce_time |
| KernelVersion: 4.0 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Specifies number of seconds in which we compute the steps |
| that occur in order to decide if the consumer is making steps. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/buffer/watermark |
| KernelVersion: 4.2 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| A single positive integer specifying the maximum number of scan |
| elements to wait for. |
| Poll will block until the watermark is reached. |
| Blocking read will wait until the minimum between the requested |
| read amount or the low water mark is available. |
| Non-blocking read will retrieve the available samples from the |
| buffer even if there are less samples then watermark level. This |
| allows the application to block on poll with a timeout and read |
| the available samples after the timeout expires and thus have a |
| maximum delay guarantee. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_enabled |
| KernelVersion: 4.2 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| A read-only boolean value that indicates if the hardware fifo is |
| currently enabled or disabled. If the device does not have a |
| hardware fifo this entry is not present. |
| The hardware fifo is enabled when the buffer is enabled if the |
| current hardware fifo watermark level is set and other current |
| device settings allows it (e.g. if a trigger is set that samples |
| data differently that the hardware fifo does then hardware fifo |
| will not enabled). |
| If the hardware fifo is enabled and the level of the hardware |
| fifo reaches the hardware fifo watermark level the device will |
| flush its hardware fifo to the device buffer. Doing a non |
| blocking read on the device when no samples are present in the |
| device buffer will also force a flush. |
| When the hardware fifo is enabled there is no need to use a |
| trigger to use buffer mode since the watermark settings |
| guarantees that the hardware fifo is flushed to the device |
| buffer. |
| |
| What: /sys/bus/iio/devices/iio:device*/buffer/hwfifo_timeout |
| KernelVersion: 4.12 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| A read/write property to provide capability to delay reporting of |
| samples till a timeout is reached. This allows host processors to |
| sleep, while the sensor is storing samples in its internal fifo. |
| The maximum timeout in seconds can be specified by setting |
| hwfifo_timeout.The current delay can be read by reading |
| hwfifo_timeout. A value of 0 means that there is no timeout. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark |
| KernelVersion: 4.2 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Read-only entry that contains a single integer specifying the |
| current watermark level for the hardware fifo. If the device |
| does not have a hardware fifo this entry is not present. |
| The watermark level for the hardware fifo is set by the driver |
| based on the value set by the user in buffer/watermark but |
| taking into account hardware limitations (e.g. most hardware |
| buffers are limited to 32-64 samples, some hardware buffers |
| watermarks are fixed or have minimum levels). A value of 0 |
| means that the hardware watermark is unset. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_min |
| KernelVersion: 4.2 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| A single positive integer specifying the minimum watermark level |
| for the hardware fifo of this device. If the device does not |
| have a hardware fifo this entry is not present. |
| If the user sets buffer/watermark to a value less than this one, |
| then the hardware watermark will remain unset. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_max |
| KernelVersion: 4.2 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| A single positive integer specifying the maximum watermark level |
| for the hardware fifo of this device. If the device does not |
| have a hardware fifo this entry is not present. |
| If the user sets buffer/watermark to a value greater than this |
| one, then the hardware watermark will be capped at this value. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_available |
| KernelVersion: 4.2 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| A list of positive integers specifying the available watermark |
| levels for the hardware fifo. This entry is optional and if it |
| is not present it means that all the values between |
| hwfifo_watermark_min and hwfifo_watermark_max are supported. |
| If the user sets buffer/watermark to a value greater than |
| hwfifo_watermak_min but not equal to any of the values in this |
| list, the driver will chose an appropriate value for the |
| hardware fifo watermark level. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_temp_calibemissivity |
| What: /sys/bus/iio/devices/iio:deviceX/in_tempX_calibemissivity |
| What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_calibemissivity |
| What: /sys/bus/iio/devices/iio:deviceX/in_tempX_object_calibemissivity |
| KernelVersion: 4.1 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| The emissivity ratio of the surface in the field of view of the |
| contactless temperature sensor. Emissivity varies from 0 to 1, |
| with 1 being the emissivity of a black body. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_oversampling_ratio |
| What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_oversampling_ratio |
| What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_oversampling_ratio |
| KernelVersion: 4.2 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Hardware applied number of measurements for acquiring one |
| data point. The HW will do <type>[_name]_oversampling_ratio |
| measurements and return the average value as output data. Each |
| value resulted from <type>[_name]_oversampling_ratio measurements |
| is considered as one sample for <type>[_name]_sampling_frequency. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_concentration_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_concentration_co2_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_co2_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_concentration_voc_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_voc_raw |
| KernelVersion: 4.3 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Raw (unscaled no offset etc.) percentage reading of a substance. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_resistance_raw |
| What: /sys/bus/iio/devices/iio:deviceX/in_resistanceX_raw |
| What: /sys/bus/iio/devices/iio:deviceX/out_resistance_raw |
| What: /sys/bus/iio/devices/iio:deviceX/out_resistanceX_raw |
| KernelVersion: 4.3 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Raw (unscaled no offset etc.) resistance reading that can be processed |
| into an ohm value. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/heater_enable |
| KernelVersion: 4.1.0 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| '1' (enable) or '0' (disable) specifying the enable |
| of heater function. Same reading values apply |
| This ABI is especially applicable for humidity sensors |
| to heatup the device and get rid of any condensation |
| in some humidity environment |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_ph_raw |
| KernelVersion: 4.5 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Raw (unscaled no offset etc.) pH reading of a substance as a negative |
| base-10 logarithm of hydrodium ions in a litre of water. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/mount_matrix |
| What: /sys/bus/iio/devices/iio:deviceX/in_mount_matrix |
| What: /sys/bus/iio/devices/iio:deviceX/out_mount_matrix |
| What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_mount_matrix |
| What: /sys/bus/iio/devices/iio:deviceX/in_accel_mount_matrix |
| KernelVersion: 4.6 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Mounting matrix for IIO sensors. This is a rotation matrix which |
| informs userspace about sensor chip's placement relative to the |
| main hardware it is mounted on. |
| Main hardware placement is defined according to the local |
| reference frame related to the physical quantity the sensor |
| measures. |
| Given that the rotation matrix is defined in a board specific |
| way (platform data and / or device-tree), the main hardware |
| reference frame definition is left to the implementor's choice |
| (see below for a magnetometer example). |
| Applications should apply this rotation matrix to samples so |
| that when main hardware reference frame is aligned onto local |
| reference frame, then sensor chip reference frame is also |
| perfectly aligned with it. |
| Matrix is a 3x3 unitary matrix and typically looks like |
| [0, 1, 0; 1, 0, 0; 0, 0, -1]. Identity matrix |
| [1, 0, 0; 0, 1, 0; 0, 0, 1] means sensor chip and main hardware |
| are perfectly aligned with each other. |
| |
| For example, a mounting matrix for a magnetometer sensor informs |
| userspace about sensor chip's ORIENTATION relative to the main |
| hardware. |
| More specifically, main hardware orientation is defined with |
| respect to the LOCAL EARTH GEOMAGNETIC REFERENCE FRAME where : |
| * Y is in the ground plane and positive towards magnetic North ; |
| * X is in the ground plane, perpendicular to the North axis and |
| positive towards the East ; |
| * Z is perpendicular to the ground plane and positive upwards. |
| |
| An implementor might consider that for a hand-held device, a |
| 'natural' orientation would be 'front facing camera at the top'. |
| The main hardware reference frame could then be described as : |
| * Y is in the plane of the screen and is positive towards the |
| top of the screen ; |
| * X is in the plane of the screen, perpendicular to Y axis, and |
| positive towards the right hand side of the screen ; |
| * Z is perpendicular to the screen plane and positive out of the |
| screen. |
| Another example for a quadrotor UAV might be : |
| * Y is in the plane of the propellers and positive towards the |
| front-view camera; |
| * X is in the plane of the propellers, perpendicular to Y axis, |
| and positive towards the starboard side of the UAV ; |
| * Z is perpendicular to propellers plane and positive upwards. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_electricalconductivity_raw |
| KernelVersion: 4.8 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Raw (unscaled no offset etc.) electric conductivity reading that |
| can be processed to siemens per meter. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_countY_raw |
| KernelVersion: 4.10 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Raw counter device counts from channel Y. For quadrature |
| counters, multiplication by an available [Y]_scale results in |
| the counts of a single quadrature signal phase from channel Y. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_indexY_raw |
| KernelVersion: 4.10 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Raw counter device index value from channel Y. This attribute |
| provides an absolute positional reference (e.g. a pulse once per |
| revolution) which may be used to home positional systems as |
| required. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_count_count_direction_available |
| KernelVersion: 4.12 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| A list of possible counting directions which are: |
| - "up" : counter device is increasing. |
| - "down": counter device is decreasing. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_countY_count_direction |
| KernelVersion: 4.12 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Raw counter device counters direction for channel Y. |
