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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
Reyad Attiyat
committed
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
Reyad Attiyat
committed
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
Reyad Attiyat
committed
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
What: /sys/.../events/in_illuminance_thresh_either_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 activity events. Depending on direction
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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.
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What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_en
What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_rising_en
What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_falling_en
What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_en
What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_rising_en
What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_falling_en
KernelVersion: 5.18
Contact: linux-iio@vger.kernel.org
Description:
Similar to in_accel_mag[_y][_rising|_falling]_en, but the event
value is relative to a reference magnitude. The reference magnitude
includes the graviational acceleration.
What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_value
What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_rising_value
What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_falling_value
What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_value
What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_rising_value
What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_falling_value
KernelVersion: 5.18
Contact: linux-iio@vger.kernel.org
Description:
The value to which the reference magnitude of the channel is
compared. If the axis is not specified, it 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/bufferY/length
KernelVersion: 5.11
Contact: linux-iio@vger.kernel.org
Description:
Number of scans contained by the buffer.
What: /sys/bus/iio/devices/iio:deviceX/bufferY/enable
KernelVersion: 5.11
Contact: linux-iio@vger.kernel.org
Description:
Actually start the buffer capture up. Will start trigger
if first device and appropriate.
Cosmin Tanislav
committed
Note that it might be impossible to configure other attributes,
(e.g.: events, scale, sampling rate) if they impact the currently
active buffer capture session.
What: /sys/bus/iio/devices/iio:deviceX/bufferY
KernelVersion: 5.11
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.
Since kernel 5.11 the scan_elements attributes are merged into
the bufferY directory, to be configurable per buffer.
What: /sys/.../iio:deviceX/bufferY/in_accel_x_en
What: /sys/.../iio:deviceX/bufferY/in_accel_y_en
What: /sys/.../iio:deviceX/bufferY/in_accel_z_en
What: /sys/.../iio:deviceX/bufferY/in_deltaangl_x_en
What: /sys/.../iio:deviceX/bufferY/in_deltaangl_y_en
What: /sys/.../iio:deviceX/bufferY/in_deltaangl_z_en
What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_x_en
What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_y_en
What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_z_en
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What: /sys/.../iio:deviceX/bufferY/in_anglvel_x_en
What: /sys/.../iio:deviceX/bufferY/in_anglvel_y_en
What: /sys/.../iio:deviceX/bufferY/in_anglvel_z_en
What: /sys/.../iio:deviceX/bufferY/in_magn_x_en
What: /sys/.../iio:deviceX/bufferY/in_magn_y_en
What: /sys/.../iio:deviceX/bufferY/in_magn_z_en
What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_en
What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_true_en
What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_tilt_comp_en
What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_true_tilt_comp_en
What: /sys/.../iio:deviceX/bufferY/in_timestamp_en
What: /sys/.../iio:deviceX/bufferY/in_voltageY_supply_en
What: /sys/.../iio:deviceX/bufferY/in_voltageY_en
What: /sys/.../iio:deviceX/bufferY/in_voltageY-voltageZ_en
What: /sys/.../iio:deviceX/bufferY/in_voltageY_i_en
What: /sys/.../iio:deviceX/bufferY/in_voltageY_q_en
What: /sys/.../iio:deviceX/bufferY/in_voltage_i_en
What: /sys/.../iio:deviceX/bufferY/in_voltage_q_en
What: /sys/.../iio:deviceX/bufferY/in_incli_x_en
What: /sys/.../iio:deviceX/bufferY/in_incli_y_en
What: /sys/.../iio:deviceX/bufferY/in_pressureY_en
What: /sys/.../iio:deviceX/bufferY/in_pressure_en
What: /sys/.../iio:deviceX/bufferY/in_rot_quaternion_en
What: /sys/.../iio:deviceX/bufferY/in_proximity_en
KernelVersion: 5.11
Contact: linux-iio@vger.kernel.org
Description:
Scan element control for triggered data capture.
What: /sys/.../iio:deviceX/bufferY/in_accel_type
What: /sys/.../iio:deviceX/bufferY/in_deltaangl_type
What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_type
What: /sys/.../iio:deviceX/bufferY/in_anglvel_type
What: /sys/.../iio:deviceX/bufferY/in_magn_type
What: /sys/.../iio:deviceX/bufferY/in_incli_type
What: /sys/.../iio:deviceX/bufferY/in_voltageY_type
What: /sys/.../iio:deviceX/bufferY/in_voltage_type
What: /sys/.../iio:deviceX/bufferY/in_voltageY_supply_type
What: /sys/.../iio:deviceX/bufferY/in_voltageY_i_type
What: /sys/.../iio:deviceX/bufferY/in_voltageY_q_type
What: /sys/.../iio:deviceX/bufferY/in_voltage_i_type
What: /sys/.../iio:deviceX/bufferY/in_voltage_q_type
What: /sys/.../iio:deviceX/bufferY/in_timestamp_type
What: /sys/.../iio:deviceX/bufferY/in_pressureY_type
What: /sys/.../iio:deviceX/bufferY/in_pressure_type
What: /sys/.../iio:deviceX/bufferY/in_rot_quaternion_type
What: /sys/.../iio:deviceX/bufferY/in_proximity_type
KernelVersion: 5.11
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/bufferY/in_voltageY_index
What: /sys/.../iio:deviceX/bufferY/in_voltageY_supply_index
What: /sys/.../iio:deviceX/bufferY/in_voltageY_i_index
What: /sys/.../iio:deviceX/bufferY/in_voltageY_q_index
What: /sys/.../iio:deviceX/bufferY/in_voltage_i_index
What: /sys/.../iio:deviceX/bufferY/in_voltage_q_index
What: /sys/.../iio:deviceX/bufferY/in_accel_x_index
What: /sys/.../iio:deviceX/bufferY/in_accel_y_index
What: /sys/.../iio:deviceX/bufferY/in_accel_z_index
What: /sys/.../iio:deviceX/bufferY/in_deltaangl_x_index
What: /sys/.../iio:deviceX/bufferY/in_deltaangl_y_index
What: /sys/.../iio:deviceX/bufferY/in_deltaangl_z_index
What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_x_index
What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_y_index
What: /sys/.../iio:deviceX/bufferY/in_deltavelocity_z_index
What: /sys/.../iio:deviceX/bufferY/in_anglvel_x_index
What: /sys/.../iio:deviceX/bufferY/in_anglvel_y_index
What: /sys/.../iio:deviceX/bufferY/in_anglvel_z_index
What: /sys/.../iio:deviceX/bufferY/in_magn_x_index
What: /sys/.../iio:deviceX/bufferY/in_magn_y_index
What: /sys/.../iio:deviceX/bufferY/in_magn_z_index
What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_index
What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_true_index
What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_tilt_comp_index
What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_true_tilt_comp_index
What: /sys/.../iio:deviceX/bufferY/in_incli_x_index
What: /sys/.../iio:deviceX/bufferY/in_incli_y_index
What: /sys/.../iio:deviceX/bufferY/in_timestamp_index
What: /sys/.../iio:deviceX/bufferY/in_pressureY_index
What: /sys/.../iio:deviceX/bufferY/in_pressure_index
What: /sys/.../iio:deviceX/bufferY/in_rot_quaternion_index
What: /sys/.../iio:deviceX/bufferY/in_proximity_index
KernelVersion: 5.11
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.
Peter Meerwald
committed
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 measured distance to an object
or the distance covered by the user since the last reboot while
activated. Units after application of scale are meters.
Peter Meerwald
committed
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.
Darshana Padmadas
committed
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
Darshana Padmadas
committed
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.
Peter Meerwald
committed
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
What: /sys/.../iio:deviceX/in_intensityY_duv_raw
Peter Meerwald
committed
KernelVersion: 3.4
Contact: linux-iio@vger.kernel.org
Description:
Unit-less light intensity. Modifiers both and ir indicate
that measurements contain visible and infrared light
components or just infrared light, respectively. Modifier
uv indicates that measurements contain ultraviolet light
components. Modifier duv indicates that measurements
contain deep ultraviolet light components.
Peter Meerwald
committed
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_integration_time
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. If shared across all channels of a given type,
<type>_integration_time is used.
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.
Reyad Attiyat
committed
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/bufferY/watermark
KernelVersion: 5.11
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/bufferY/data_available
KernelVersion: 5.11
Contact: linux-iio@vger.kernel.org
Description:
A read-only value indicating the bytes of data available in the
buffer. In the case of an output buffer, this indicates the
amount of empty space available to write data to. In the case of
an input buffer, this indicates the amount of data available for
reading.
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.
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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_ethanol_raw
What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_ethanol_raw
What: /sys/bus/iio/devices/iio:deviceX/in_concentration_h2_raw
What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_h2_raw
What: /sys/bus/iio/devices/iio:deviceX/in_concentration_o2_raw
What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_o2_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.) reading of a substance. Units
after application of scale and offset are percents.
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.
Units after application of scale and offset are ohms.
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.
Units after application of scale and offset are siemens per
meter.
What: /sys/bus/iio/devices/iio:deviceX/in_countY_raw
William Breathitt Gray
committed
KernelVersion: 4.10
Contact: linux-iio@vger.kernel.org
Description:
This interface is deprecated; please use the Counter subsystem.
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
William Breathitt Gray
committed
KernelVersion: 4.10
Contact: linux-iio@vger.kernel.org
Description:
This interface is deprecated; please use the Counter subsystem.
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:
This interface is deprecated; please use the Counter subsystem.
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:
This interface is deprecated; please use the Counter subsystem.
Raw counter device counters direction for channel Y.
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_label
What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_label
KernelVersion: 5.8
Contact: linux-iio@vger.kernel.org
Description:
Optional symbolic label to a device channel.
If a label is defined for this channel add that to the channel
specific attributes. This is useful for userspace to be able to
better identify an individual channel.
What: /sys/bus/iio/devices/iio:deviceX/in_phaseY_raw
KernelVersion: 4.18
Contact: linux-iio@vger.kernel.org
Description:
Raw (unscaled) phase difference reading from channel Y.