742 lines
33 KiB
Plaintext
742 lines
33 KiB
Plaintext
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/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 datardy 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/.../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
|
|
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 microvolts.
|
|
|
|
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 microvolts.
|
|
|
|
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_z_raw
|
|
KernelVersion: 2.6.35
|
|
Contact: linux-iio@vger.kernel.org
|
|
Description:
|
|
Raw (unscaled no bias removal etc) temperature measurement.
|
|
It 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). Units after application of scale and offset
|
|
are milli degrees Celsuis.
|
|
|
|
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_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) Data converted by application of offset then scale to
|
|
radians per second. 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_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_tempY_offset
|
|
What: /sys/bus/iio/devices/iio:deviceX/in_temp_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_supply_scale
|
|
What: /sys/bus/iio/devices/iio:deviceX/in_voltage_scale
|
|
What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_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_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
|
|
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
|
|
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_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
|
|
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_accel_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/in_capacitance_scale_available
|
|
KernelVersion: 2.635
|
|
Contact: linux-iio@vger.kernel.org
|
|
Description:
|
|
If a discrete set of scale values are available, they
|
|
are listed in this attribute.
|
|
|
|
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/bus/iio/devices/iio:deviceX/out_voltageY_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.
|
|
|
|
What: /sys/bus/iio/devices/iio:deviceX/out_voltageY&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
|
|
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
|
|
100kohm_to_gnd: connected to ground via an 100kOhm 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_votlageY_powerdown_mode_available
|
|
What: /sys/.../iio:deviceX/out_voltage_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
|
|
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. Clearing returns to
|
|
normal operation. Y may be suppressed if all outputs are
|
|
controlled together.
|
|
|
|
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_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_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 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/.../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_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_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_voltageY_supply_raw_thresh_rising_value
|
|
What: /sys/.../events/in_voltageY_supply_raw_thresh_falling_value
|
|
What: /sys/.../events/in_voltageY_raw_thresh_falling_value
|
|
What: /sys/.../events/in_voltageY_raw_thresh_falling_value
|
|
What: /sys/.../events/in_tempY_raw_thresh_falling_value
|
|
What: /sys/.../events/in_tempY_raw_thresh_falling_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_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_voltageY_supply_raw_roc_rising_value
|
|
What: /sys/.../events/in_voltageY_supply_raw_roc_falling_value
|
|
What: /sys/.../events/in_voltageY_raw_roc_falling_value
|
|
What: /sys/.../events/in_voltageY_raw_roc_falling_value
|
|
What: /sys/.../events/in_tempY_raw_roc_falling_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
|
|
hat: /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_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
|
|
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/.../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/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/bytes_per_datum
|
|
KernelVersion: 2.6.37
|
|
Contact: linux-iio@vger.kernel.org
|
|
Description:
|
|
Bytes per scan. Due to alignment fun, the scan may be larger
|
|
than implied directly by the scan_element parameters.
|
|
|
|
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/buffer/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/.../buffer/scan_elements/in_accel_x_en
|
|
What: /sys/.../buffer/scan_elements/in_accel_y_en
|
|
What: /sys/.../buffer/scan_elements/in_accel_z_en
|
|
What: /sys/.../buffer/scan_elements/in_anglvel_x_en
|
|
What: /sys/.../buffer/scan_elements/in_anglvel_y_en
|
|
What: /sys/.../buffer/scan_elements/in_anglvel_z_en
|
|
What: /sys/.../buffer/scan_elements/in_magn_x_en
|
|
What: /sys/.../buffer/scan_elements/in_magn_y_en
|
|
What: /sys/.../buffer/scan_elements/in_magn_z_en
|
|
What: /sys/.../buffer/scan_elements/in_timestamp_en
|
|
What: /sys/.../buffer/scan_elements/in_voltageY_supply_en
|
|
What: /sys/.../buffer/scan_elements/in_voltageY_en
|
|
What: /sys/.../buffer/scan_elements/in_voltageY-voltageZ_en
|
|
What: /sys/.../buffer/scan_elements/in_incli_x_en
|
|
What: /sys/.../buffer/scan_elements/in_incli_y_en
|
|
KernelVersion: 2.6.37
|
|
Contact: linux-iio@vger.kernel.org
|
|
Description:
|
|
Scan element control for triggered data capture.
|
|
|
|
What: /sys/.../buffer/scan_elements/in_accel_type
|
|
What: /sys/.../buffer/scan_elements/in_anglvel_type
|
|
What: /sys/.../buffer/scan_elements/in_magn_type
|
|
What: /sys/.../buffer/scan_elements/in_incli_type
|
|
What: /sys/.../buffer/scan_elements/in_voltageY_type
|
|
What: /sys/.../buffer/scan_elements/in_voltage-in_type
|
|
What: /sys/.../buffer/scan_elements/in_voltageY_supply_type
|
|
What: /sys/.../buffer/scan_elements/in_timestamp_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 a64 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/.../buffer/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/.../buffer/scan_elements/in_voltageY_index
|
|
What: /sys/.../buffer/scan_elements/in_voltageY_supply_index
|
|
What: /sys/.../buffer/scan_elements/in_accel_x_index
|
|
What: /sys/.../buffer/scan_elements/in_accel_y_index
|
|
What: /sys/.../buffer/scan_elements/in_accel_z_index
|
|
What: /sys/.../buffer/scan_elements/in_anglvel_x_index
|
|
What: /sys/.../buffer/scan_elements/in_anglvel_y_index
|
|
What: /sys/.../buffer/scan_elements/in_anglvel_z_index
|
|
What: /sys/.../buffer/scan_elements/in_magn_x_index
|
|
What: /sys/.../buffer/scan_elements/in_magn_y_index
|
|
What: /sys/.../buffer/scan_elements/in_magn_z_index
|
|
What: /sys/.../buffer/scan_elements/in_incli_x_index
|
|
What: /sys/.../buffer/scan_elements/in_incli_y_index
|
|
What: /sys/.../buffer/scan_elements/in_timestamp_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_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/ac_excitation_en
|
|
KernelVersion: 3.1.0
|
|
Contact: linux-iio@vger.kernel.org
|
|
Description:
|
|
This attribute, if available, is used to enable the AC
|
|
excitation mode found on some converters. In ac excitation mode,
|
|
the polarity of the excitation voltage is reversed on
|
|
alternate cycles, to eliminate DC errors.
|
|
|
|
What: /sys/.../iio:deviceX/bridge_switch_en
|
|
KernelVersion: 3.1.0
|
|
Contact: linux-iio@vger.kernel.org
|
|
Description:
|
|
This attribute, if available, is used to close or open the
|
|
bridge power down switch found on some converters.
|
|
In bridge applications, such as strain gauges and load cells,
|
|
the bridge itself consumes the majority of the current in the
|
|
system. To minimize the current consumption of the system,
|
|
the bridge can be disconnected (when it is not being used
|
|
using the bridge_switch_en attribute.
|