1 What: /sys/bus/iio/devices/iio:deviceX
3 Contact: linux-iio@vger.kernel.org
5 Hardware chip or device accessed by one communication port.
6 Corresponds to a grouping of sensor channels. X is the IIO
9 What: /sys/bus/iio/devices/triggerX
11 Contact: linux-iio@vger.kernel.org
13 An event driven driver of data capture to an in kernel buffer.
14 May be provided by a device driver that also has an IIO device
15 based on hardware generated events (e.g. data ready) or
16 provided by a separate driver for other hardware (e.g.
17 periodic timer, GPIO or high resolution timer).
18 Contains trigger type specific elements. These do not
19 generalize well and hence are not documented in this file.
20 X is the IIO index of the trigger.
22 What: /sys/bus/iio/devices/iio:deviceX/buffer
24 Contact: linux-iio@vger.kernel.org
26 Directory of attributes relating to the buffer for the device.
28 What: /sys/bus/iio/devices/iio:deviceX/name
30 Contact: linux-iio@vger.kernel.org
32 Description of the physical chip / device for device X.
33 Typically a part number.
35 What: /sys/bus/iio/devices/iio:deviceX/current_timestamp_clock
37 Contact: linux-iio@vger.kernel.org
39 String identifying current posix clock used to timestamp
40 buffered samples and events for device X.
42 What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency
43 What: /sys/bus/iio/devices/iio:deviceX/buffer/sampling_frequency
44 What: /sys/bus/iio/devices/triggerX/sampling_frequency
46 Contact: linux-iio@vger.kernel.org
48 Some devices have internal clocks. This parameter sets the
49 resulting sampling frequency. In many devices this
50 parameter has an effect on input filters etc. rather than
51 simply controlling when the input is sampled. As this
52 effects data ready triggers, hardware buffers and the sysfs
53 direct access interfaces, it may be found in any of the
54 relevant directories. If it effects all of the above
55 then it is to be found in the base device directory.
57 What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency_available
58 What: /sys/bus/iio/devices/iio:deviceX/in_proximity_sampling_frequency_available
59 What: /sys/.../iio:deviceX/buffer/sampling_frequency_available
60 What: /sys/bus/iio/devices/triggerX/sampling_frequency_available
62 Contact: linux-iio@vger.kernel.org
64 When the internal sampling clock can only take a specific set of
65 frequencies, we can specify the available values with:
66 - a small discrete set of values like "0 2 4 6 8"
67 - a range with minimum, step and maximum frequencies like
70 What: /sys/bus/iio/devices/iio:deviceX/oversampling_ratio
72 Contact: linux-iio@vger.kernel.org
74 Hardware dependent ADC oversampling. Controls the sampling ratio
75 of the digital filter if available.
77 What: /sys/bus/iio/devices/iio:deviceX/oversampling_ratio_available
79 Contact: linux-iio@vger.kernel.org
81 Hardware dependent values supported by the oversampling filter.
83 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_raw
84 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_raw
85 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_raw
86 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_raw
88 Contact: linux-iio@vger.kernel.org
90 Raw (unscaled no bias removal etc.) voltage measurement from
91 channel Y. In special cases where the channel does not
92 correspond to externally available input one of the named
93 versions may be used. The number must always be specified and
94 unique to allow association with event codes. Units after
95 application of scale and offset are millivolts.
97 Channels with 'i' and 'q' modifiers always exist in pairs and both
98 channels refer to the same signal. The 'i' channel contains the in-phase
99 component of the signal while the 'q' channel contains the quadrature
102 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_raw
103 KernelVersion: 2.6.35
104 Contact: linux-iio@vger.kernel.org
106 Raw (unscaled) differential voltage measurement equivalent to
107 channel Y - channel Z where these channel numbers apply to the
108 physically equivalent inputs when non differential readings are
109 separately available. In differential only parts, then all that
110 is required is a consistent labeling. Units after application
111 of scale and offset are millivolts.
113 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_raw
114 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_raw
116 Contact: linux-iio@vger.kernel.org
118 Raw (unscaled no bias removal etc.) current measurement from
119 channel Y. In special cases where the channel does not
120 correspond to externally available input one of the named
121 versions may be used. The number must always be specified and
122 unique to allow association with event codes. Units after
123 application of scale and offset are milliamps.
125 What: /sys/bus/iio/devices/iio:deviceX/in_powerY_raw
127 Contact: linux-iio@vger.kernel.org
129 Raw (unscaled no bias removal etc.) power measurement from
130 channel Y. The number must always be specified and
131 unique to allow association with event codes. Units after
132 application of scale and offset are milliwatts.
134 What: /sys/bus/iio/devices/iio:deviceX/in_capacitanceY_raw
136 Contact: linux-iio@vger.kernel.org
138 Raw capacitance measurement from channel Y. Units after
139 application of scale and offset are nanofarads.
141 What: /sys/.../iio:deviceX/in_capacitanceY-in_capacitanceZ_raw
143 Contact: linux-iio@vger.kernel.org
145 Raw differential capacitance measurement equivalent to
146 channel Y - channel Z where these channel numbers apply to the
147 physically equivalent inputs when non differential readings are
148 separately available. In differential only parts, then all that
149 is required is a consistent labeling. Units after application
150 of scale and offset are nanofarads.
152 What: /sys/bus/iio/devices/iio:deviceX/in_temp_raw
153 What: /sys/bus/iio/devices/iio:deviceX/in_tempX_raw
154 What: /sys/bus/iio/devices/iio:deviceX/in_temp_x_raw
155 What: /sys/bus/iio/devices/iio:deviceX/in_temp_y_raw
156 What: /sys/bus/iio/devices/iio:deviceX/in_temp_ambient_raw
157 What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_raw
158 KernelVersion: 2.6.35
159 Contact: linux-iio@vger.kernel.org
161 Raw (unscaled no bias removal etc.) temperature measurement.
162 If an axis is specified it generally means that the temperature
163 sensor is associated with one part of a compound device (e.g.
164 a gyroscope axis). The ambient and object modifiers distinguish
165 between ambient (reference) and distant temperature for contact-
166 less measurements. Units after application of scale and offset
167 are milli degrees Celsius.
169 What: /sys/bus/iio/devices/iio:deviceX/in_tempX_input
170 KernelVersion: 2.6.38
171 Contact: linux-iio@vger.kernel.org
173 Scaled temperature measurement in milli degrees Celsius.
175 What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_raw
176 What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_raw
177 What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_raw
178 KernelVersion: 2.6.35
179 Contact: linux-iio@vger.kernel.org
181 Acceleration in direction x, y or z (may be arbitrarily assigned
182 but should match other such assignments on device).
183 Has all of the equivalent parameters as per voltageY. Units
184 after application of scale and offset are m/s^2.
186 What: /sys/bus/iio/devices/iio:deviceX/in_gravity_x_raw
187 What: /sys/bus/iio/devices/iio:deviceX/in_gravity_y_raw
188 What: /sys/bus/iio/devices/iio:deviceX/in_gravity_z_raw
190 Contact: linux-iio@vger.kernel.org
192 Gravity in direction x, y or z (may be arbitrarily assigned
193 but should match other such assignments on device).
194 Units after application of scale and offset are m/s^2.
196 What: /sys/bus/iio/devices/iio:deviceX/in_angl_raw
198 Contact: linux-iio@vger.kernel.org
200 Angle of rotation. Units after application of scale and offset
203 What: /sys/bus/iio/devices/iio:deviceX/in_positionrelative_x_raw
204 What: /sys/bus/iio/devices/iio:deviceX/in_positionrelative_y_raw
206 Contact: linux-iio@vger.kernel.org
208 Relative position in direction x or y on a pad (may be
209 arbitrarily assigned but should match other such assignments on
211 Units after application of scale and offset are milli percents
212 from the pad's size in both directions. Should be calibrated by
215 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_raw
216 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_raw
217 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_raw
218 KernelVersion: 2.6.35
219 Contact: linux-iio@vger.kernel.org
221 Angular velocity about axis x, y or z (may be arbitrarily
222 assigned). Has all the equivalent parameters as per voltageY.
223 Units after application of scale and offset are radians per
226 What: /sys/bus/iio/devices/iio:deviceX/in_incli_x_raw
227 What: /sys/bus/iio/devices/iio:deviceX/in_incli_y_raw
228 What: /sys/bus/iio/devices/iio:deviceX/in_incli_z_raw
229 KernelVersion: 2.6.35
230 Contact: linux-iio@vger.kernel.org
232 Inclination raw reading about axis x, y or z (may be
233 arbitrarily assigned). Data converted by application of offset
234 and scale to degrees.
236 What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_raw
237 What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_raw
238 What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_raw
239 KernelVersion: 2.6.35
240 Contact: linux-iio@vger.kernel.org
242 Magnetic field along axis x, y or z (may be arbitrarily
243 assigned). Data converted by application of offset
246 What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_peak_raw
247 What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_peak_raw
248 What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_peak_raw
249 KernelVersion: 2.6.36
250 Contact: linux-iio@vger.kernel.org
252 Highest value since some reset condition. These
253 attributes allow access to this and are otherwise
254 the direct equivalent of the <type>Y[_name]_raw attributes.
256 What: /sys/bus/iio/devices/iio:deviceX/in_accel_xyz_squared_peak_raw
257 KernelVersion: 2.6.36
258 Contact: linux-iio@vger.kernel.org
260 A computed peak value based on the sum squared magnitude of
261 the underlying value in the specified directions.
263 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_raw
264 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_raw
266 Contact: linux-iio@vger.kernel.org
268 Raw pressure measurement from channel Y. Units after
269 application of scale and offset are kilopascal.
271 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_input
272 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_input
274 Contact: linux-iio@vger.kernel.org
276 Scaled pressure measurement from channel Y, in kilopascal.
278 What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_raw
280 Contact: linux-iio@vger.kernel.org
282 Raw humidity measurement of air. Units after application of
283 scale and offset are milli percent.
285 What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_input
287 Contact: linux-iio@vger.kernel.org
289 Scaled humidity measurement in milli percent.
291 What: /sys/bus/iio/devices/iio:deviceX/in_X_mean_raw
293 Contact: linux-iio@vger.kernel.org
295 Averaged raw measurement from channel X. The number of values
296 used for averaging is device specific. The converting rules for
297 normal raw values also applies to the averaged raw values.
299 What: /sys/bus/iio/devices/iio:deviceX/in_accel_offset
300 What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_offset
301 What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_offset
302 What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_offset
303 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_offset
304 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_offset
305 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_offset
306 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_offset
307 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_offset
308 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_offset
309 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_offset
310 What: /sys/bus/iio/devices/iio:deviceX/in_current_offset
311 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_i_offset
312 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_q_offset
313 What: /sys/bus/iio/devices/iio:deviceX/in_current_q_offset
314 What: /sys/bus/iio/devices/iio:deviceX/in_current_i_offset
315 What: /sys/bus/iio/devices/iio:deviceX/in_tempY_offset
316 What: /sys/bus/iio/devices/iio:deviceX/in_temp_offset
317 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_offset
318 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_offset
319 What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_offset
320 What: /sys/bus/iio/devices/iio:deviceX/in_magn_offset
321 What: /sys/bus/iio/devices/iio:deviceX/in_rot_offset
322 What: /sys/bus/iio/devices/iio:deviceX/in_angl_offset
323 KernelVersion: 2.6.35
324 Contact: linux-iio@vger.kernel.org
326 If known for a device, offset to be added to <type>[Y]_raw prior
327 to scaling by <type>[Y]_scale in order to obtain value in the
328 <type> units as specified in <type>[Y]_raw documentation.
329 Not present if the offset is always 0 or unknown. If Y or
330 axis <x|y|z> is not present, then the offset applies to all
331 in channels of <type>.
332 May be writable if a variable offset can be applied on the
333 device. Note that this is different to calibbias which
334 is for devices (or drivers) that apply offsets to compensate
335 for variation between different instances of the part, typically
336 adjusted by using some hardware supported calibration procedure.
337 Calibbias is applied internally, offset is applied in userspace
340 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_scale
341 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_scale
342 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_scale
343 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_scale
344 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_scale
345 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_scale
346 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_scale
347 What: /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_scale
348 What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_scale
349 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_scale
350 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_scale
351 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_scale
352 What: /sys/bus/iio/devices/iio:deviceX/in_current_scale
353 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_i_scale
354 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_q_scale
355 What: /sys/bus/iio/devices/iio:deviceX/in_current_i_scale
356 What: /sys/bus/iio/devices/iio:deviceX/in_current_q_scale
357 What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale
358 What: /sys/bus/iio/devices/iio:deviceX/in_accel_peak_scale
359 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_scale
360 What: /sys/bus/iio/devices/iio:deviceX/in_energy_scale
361 What: /sys/bus/iio/devices/iio:deviceX/in_distance_scale
362 What: /sys/bus/iio/devices/iio:deviceX/in_magn_scale
363 What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_scale
364 What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_scale
365 What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_scale
366 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_scale
367 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_scale
368 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_scale
369 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_scale
370 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_scale
371 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_scale
372 What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_scale
373 What: /sys/bus/iio/devices/iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_scale
374 What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_scale
375 What: /sys/bus/iio/devices/iio:deviceX/in_countY_scale
376 What: /sys/bus/iio/devices/iio:deviceX/in_angl_scale
377 KernelVersion: 2.6.35
378 Contact: linux-iio@vger.kernel.org
380 If known for a device, scale to be applied to <type>Y[_name]_raw
381 post addition of <type>[Y][_name]_offset in order to obtain the
382 measured value in <type> units as specified in
383 <type>[Y][_name]_raw documentation. If shared across all in
384 channels then Y and <x|y|z> are not present and the value is
385 called <type>[Y][_name]_scale. The peak modifier means this
386 value is applied to <type>Y[_name]_peak_raw values.
388 What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibbias
389 What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibbias
390 What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibbias
391 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibbias
392 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibbias
393 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibbias
394 What: /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibbias
395 What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibbias
396 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibbias
397 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibbias
398 KernelVersion: 2.6.35
399 Contact: linux-iio@vger.kernel.org
401 Hardware applied calibration offset (assumed to fix production
404 What /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale
405 What /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_calibscale
406 What /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_calibscale
407 What /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_calibscale
408 What /sys/bus/iio/devices/iio:deviceX/in_voltage_i_calibscale
409 What /sys/bus/iio/devices/iio:deviceX/in_voltage_q_calibscale
410 What /sys/bus/iio/devices/iio:deviceX/in_voltage_calibscale
411 What /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibscale
412 What /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibscale
413 What /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibscale
414 What /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibscale
415 What /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibscale
416 What /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibscale
417 what /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibscale
418 what /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibscale
419 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibscale
420 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibscale
421 What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_calibscale
422 KernelVersion: 2.6.35
423 Contact: linux-iio@vger.kernel.org
425 Hardware applied calibration scale factor (assumed to fix
426 production inaccuracies). If shared across all channels,
427 <type>_calibscale is used.
429 What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender
430 What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender
431 What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender
432 What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender
434 Contact: linux-iio@vger.kernel.org
436 Gender of the user (e.g.: male, female) used by some pedometers
437 to compute the stride length, distance, speed and activity
440 What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender_available
441 What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender_available
442 What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender_available
443 What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender_available
445 Contact: linux-iio@vger.kernel.org
447 Lists all available gender values (e.g.: male, female).
449 What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibheight
450 What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibheight
451 What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibheight
452 What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibheight
454 Contact: linux-iio@vger.kernel.org
456 Height of the user (in meters) used by some pedometers
457 to compute the stride length, distance, speed and activity
460 What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibweight
462 Contact: linux-iio@vger.kernel.org
464 Weight of the user (in kg). It is needed by some pedometers
465 to compute the calories burnt by the user.
467 What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale_available
468 What: /sys/.../iio:deviceX/in_anglvel_scale_available
469 What: /sys/.../iio:deviceX/in_magn_scale_available
470 What: /sys/.../iio:deviceX/in_illuminance_scale_available
471 What: /sys/.../iio:deviceX/in_intensity_scale_available
472 What: /sys/.../iio:deviceX/in_proximity_scale_available
473 What: /sys/.../iio:deviceX/in_voltageX_scale_available
474 What: /sys/.../iio:deviceX/in_voltage-voltage_scale_available
475 What: /sys/.../iio:deviceX/out_voltageX_scale_available
476 What: /sys/.../iio:deviceX/out_altvoltageX_scale_available
477 What: /sys/.../iio:deviceX/in_capacitance_scale_available
478 What: /sys/.../iio:deviceX/in_pressure_scale_available
479 What: /sys/.../iio:deviceX/in_pressureY_scale_available
480 KernelVersion: 2.6.35
481 Contact: linux-iio@vger.kernel.org
483 If a discrete set of scale values is available, they
484 are listed in this attribute.
486 What /sys/bus/iio/devices/iio:deviceX/out_voltageY_hardwaregain
487 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_red_hardwaregain
488 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_green_hardwaregain
489 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_blue_hardwaregain
490 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_clear_hardwaregain
491 KernelVersion: 2.6.35
492 Contact: linux-iio@vger.kernel.org
494 Hardware applied gain factor. If shared across all channels,
495 <type>_hardwaregain is used.
497 What: /sys/.../in_accel_filter_low_pass_3db_frequency
498 What: /sys/.../in_magn_filter_low_pass_3db_frequency
499 What: /sys/.../in_anglvel_filter_low_pass_3db_frequency
501 Contact: linux-iio@vger.kernel.org
503 If a known or controllable low pass filter is applied
504 to the underlying data channel, then this parameter
505 gives the 3dB frequency of the filter in Hz.
507 What: /sys/.../in_accel_filter_high_pass_3db_frequency
508 What: /sys/.../in_anglvel_filter_high_pass_3db_frequency
509 What: /sys/.../in_magn_filter_high_pass_3db_frequency
511 Contact: linux-iio@vger.kernel.org
513 If a known or controllable high pass filter is applied
514 to the underlying data channel, then this parameter
515 gives the 3dB frequency of the filter in Hz.
517 What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_raw
518 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_raw
519 KernelVersion: 2.6.37
520 Contact: linux-iio@vger.kernel.org
522 Raw (unscaled, no bias etc.) output voltage for
523 channel Y. The number must always be specified and
524 unique if the output corresponds to a single channel.
525 While DAC like devices typically use out_voltage,
526 a continuous frequency generating device, such as
527 a DDS or PLL should use out_altvoltage.
529 What: /sys/bus/iio/devices/iio:deviceX/out_voltageY&Z_raw
530 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY&Z_raw
531 KernelVersion: 2.6.37
532 Contact: linux-iio@vger.kernel.org
534 Raw (unscaled, no bias etc.) output voltage for an aggregate of
535 channel Y, channel Z, etc. This interface is available in cases
536 where a single output sets the value for multiple channels
539 What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown_mode
540 What: /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown_mode
541 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown_mode
542 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown_mode
543 KernelVersion: 2.6.38
544 Contact: linux-iio@vger.kernel.org
546 Specifies the output powerdown mode.
547 DAC output stage is disconnected from the amplifier and
548 1kohm_to_gnd: connected to ground via an 1kOhm resistor,
549 2.5kohm_to_gnd: connected to ground via a 2.5kOhm resistor,
550 6kohm_to_gnd: connected to ground via a 6kOhm resistor,
551 20kohm_to_gnd: connected to ground via a 20kOhm resistor,
552 90kohm_to_gnd: connected to ground via a 90kOhm resistor,
553 100kohm_to_gnd: connected to ground via an 100kOhm resistor,
554 125kohm_to_gnd: connected to ground via an 125kOhm resistor,
555 500kohm_to_gnd: connected to ground via a 500kOhm resistor,
556 640kohm_to_gnd: connected to ground via a 640kOhm resistor,
557 three_state: left floating.
558 For a list of available output power down options read
559 outX_powerdown_mode_available. If Y is not present the
560 mode is shared across all outputs.
562 What: /sys/.../iio:deviceX/out_voltageY_powerdown_mode_available
563 What: /sys/.../iio:deviceX/out_voltage_powerdown_mode_available
564 What: /sys/.../iio:deviceX/out_altvoltageY_powerdown_mode_available
565 What: /sys/.../iio:deviceX/out_altvoltage_powerdown_mode_available
566 KernelVersion: 2.6.38
567 Contact: linux-iio@vger.kernel.org
569 Lists all available output power down modes.
570 If Y is not present the mode is shared across all outputs.
572 What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown
573 What: /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown
574 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown
575 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown
576 KernelVersion: 2.6.38
577 Contact: linux-iio@vger.kernel.org
579 Writing 1 causes output Y to enter the power down mode specified
580 by the corresponding outY_powerdown_mode. DAC output stage is
581 disconnected from the amplifier. Clearing returns to normal
582 operation. Y may be suppressed if all outputs are controlled
585 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency
587 Contact: linux-iio@vger.kernel.org
589 Output frequency for channel Y in Hz. The number must always be
590 specified and unique if the output corresponds to a single
593 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_phase
595 Contact: linux-iio@vger.kernel.org
597 Phase in radians of one frequency/clock output Y
598 (out_altvoltageY) relative to another frequency/clock output
599 (out_altvoltageZ) of the device X. The number must always be
600 specified and unique if the output corresponds to a single
603 What: /sys/bus/iio/devices/iio:deviceX/events
604 KernelVersion: 2.6.35
605 Contact: linux-iio@vger.kernel.org
607 Configuration of which hardware generated events are passed up
610 What: /sys/.../iio:deviceX/events/in_accel_x_thresh_rising_en
611 What: /sys/.../iio:deviceX/events/in_accel_x_thresh_falling_en
612 What: /sys/.../iio:deviceX/events/in_accel_y_thresh_rising_en
613 What: /sys/.../iio:deviceX/events/in_accel_y_thresh_falling_en
614 What: /sys/.../iio:deviceX/events/in_accel_z_thresh_rising_en
615 What: /sys/.../iio:deviceX/events/in_accel_z_thresh_falling_en
616 What: /sys/.../iio:deviceX/events/in_anglvel_x_thresh_rising_en
617 What: /sys/.../iio:deviceX/events/in_anglvel_x_thresh_falling_en
618 What: /sys/.../iio:deviceX/events/in_anglvel_y_thresh_rising_en
619 What: /sys/.../iio:deviceX/events/in_anglvel_y_thresh_falling_en
620 What: /sys/.../iio:deviceX/events/in_anglvel_z_thresh_rising_en
621 What: /sys/.../iio:deviceX/events/in_anglvel_z_thresh_falling_en
622 What: /sys/.../iio:deviceX/events/in_magn_x_thresh_rising_en
623 What: /sys/.../iio:deviceX/events/in_magn_x_thresh_falling_en
624 What: /sys/.../iio:deviceX/events/in_magn_y_thresh_rising_en
625 What: /sys/.../iio:deviceX/events/in_magn_y_thresh_falling_en
626 What: /sys/.../iio:deviceX/events/in_magn_z_thresh_rising_en
627 What: /sys/.../iio:deviceX/events/in_magn_z_thresh_falling_en
628 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_rising_en
629 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_falling_en
630 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_rising_en
631 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_falling_en
632 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_en
633 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_en
634 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_rising_en
635 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_falling_en
636 What: /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_rising_en
637 What: /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_falling_en
638 What: /sys/.../iio:deviceX/events/in_voltageY_thresh_rising_en
639 What: /sys/.../iio:deviceX/events/in_voltageY_thresh_falling_en
640 What: /sys/.../iio:deviceX/events/in_voltageY_thresh_either_en
641 What: /sys/.../iio:deviceX/events/in_tempY_thresh_rising_en
642 What: /sys/.../iio:deviceX/events/in_tempY_thresh_falling_en
643 KernelVersion: 2.6.37
644 Contact: linux-iio@vger.kernel.org
646 Event generated when channel passes a threshold in the specified
647 (_rising|_falling) direction. If the direction is not specified,
648 then either the device will report an event which ever direction
649 a single threshold value is passed in (e.g.
650 <type>[Y][_name]_<raw|input>_thresh_value) or
651 <type>[Y][_name]_<raw|input>_thresh_rising_value and
652 <type>[Y][_name]_<raw|input>_thresh_falling_value may take
653 different values, but the device can only enable both thresholds
655 Note the driver will assume the last p events requested are
656 to be enabled where p is how many it supports (which may vary
657 depending on the exact set requested. So if you want to be
658 sure you have set what you think you have, check the contents of
659 these attributes after everything is configured. Drivers may
660 have to buffer any parameters so that they are consistent when
661 a given event type is enabled at a future point (and not those for
662 whatever event was previously enabled).
664 What: /sys/.../iio:deviceX/events/in_accel_x_roc_rising_en
665 What: /sys/.../iio:deviceX/events/in_accel_x_roc_falling_en
666 What: /sys/.../iio:deviceX/events/in_accel_y_roc_rising_en
667 What: /sys/.../iio:deviceX/events/in_accel_y_roc_falling_en
668 What: /sys/.../iio:deviceX/events/in_accel_z_roc_rising_en
669 What: /sys/.../iio:deviceX/events/in_accel_z_roc_falling_en
670 What: /sys/.../iio:deviceX/events/in_anglvel_x_roc_rising_en
671 What: /sys/.../iio:deviceX/events/in_anglvel_x_roc_falling_en
672 What: /sys/.../iio:deviceX/events/in_anglvel_y_roc_rising_en
673 What: /sys/.../iio:deviceX/events/in_anglvel_y_roc_falling_en
674 What: /sys/.../iio:deviceX/events/in_anglvel_z_roc_rising_en
675 What: /sys/.../iio:deviceX/events/in_anglvel_z_roc_falling_en
676 What: /sys/.../iio:deviceX/events/in_magn_x_roc_rising_en
677 What: /sys/.../iio:deviceX/events/in_magn_x_roc_falling_en
678 What: /sys/.../iio:deviceX/events/in_magn_y_roc_rising_en
679 What: /sys/.../iio:deviceX/events/in_magn_y_roc_falling_en
680 What: /sys/.../iio:deviceX/events/in_magn_z_roc_rising_en
681 What: /sys/.../iio:deviceX/events/in_magn_z_roc_falling_en
682 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_rising_en
683 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_falling_en
684 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_rising_en
685 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_falling_en
686 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_rising_en
687 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_falling_en
688 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_rising_en
689 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_falling_en
690 What: /sys/.../iio:deviceX/events/in_voltageY_supply_roc_rising_en
691 What: /sys/.../iio:deviceX/events/in_voltageY_supply_roc_falling_en
692 What: /sys/.../iio:deviceX/events/in_voltageY_roc_rising_en
693 What: /sys/.../iio:deviceX/events/in_voltageY_roc_falling_en
694 What: /sys/.../iio:deviceX/events/in_tempY_roc_rising_en
695 What: /sys/.../iio:deviceX/events/in_tempY_roc_falling_en
696 KernelVersion: 2.6.37
697 Contact: linux-iio@vger.kernel.org
699 Event generated when channel passes a threshold on the rate of
700 change (1st differential) in the specified (_rising|_falling)
701 direction. If the direction is not specified, then either the
702 device will report an event which ever direction a single
703 threshold value is passed in (e.g.
704 <type>[Y][_name]_<raw|input>_roc_value) or
705 <type>[Y][_name]_<raw|input>_roc_rising_value and
706 <type>[Y][_name]_<raw|input>_roc_falling_value may take
707 different values, but the device can only enable both rate of
708 change thresholds or neither.
709 Note the driver will assume the last p events requested are
710 to be enabled where p is however many it supports (which may
711 vary depending on the exact set requested. So if you want to be
712 sure you have set what you think you have, check the contents of
713 these attributes after everything is configured. Drivers may
714 have to buffer any parameters so that they are consistent when
715 a given event type is enabled a future point (and not those for
716 whatever event was previously enabled).
718 What: /sys/.../events/in_accel_thresh_rising_value
719 What: /sys/.../events/in_accel_thresh_falling_value
720 What: /sys/.../events/in_accel_x_raw_thresh_rising_value
721 What: /sys/.../events/in_accel_x_raw_thresh_falling_value
722 What: /sys/.../events/in_accel_y_raw_thresh_rising_value
723 What: /sys/.../events/in_accel_y_raw_thresh_falling_value
724 What: /sys/.../events/in_accel_z_raw_thresh_rising_value
725 What: /sys/.../events/in_accel_z_raw_thresh_falling_value
726 What: /sys/.../events/in_anglvel_x_raw_thresh_rising_value
727 What: /sys/.../events/in_anglvel_x_raw_thresh_falling_value
728 What: /sys/.../events/in_anglvel_y_raw_thresh_rising_value
729 What: /sys/.../events/in_anglvel_y_raw_thresh_falling_value
730 What: /sys/.../events/in_anglvel_z_raw_thresh_rising_value
731 What: /sys/.../events/in_anglvel_z_raw_thresh_falling_value
732 What: /sys/.../events/in_magn_x_raw_thresh_rising_value
733 What: /sys/.../events/in_magn_x_raw_thresh_falling_value
734 What: /sys/.../events/in_magn_y_raw_thresh_rising_value
735 What: /sys/.../events/in_magn_y_raw_thresh_falling_value
736 What: /sys/.../events/in_magn_z_raw_thresh_rising_value
737 What: /sys/.../events/in_magn_z_raw_thresh_falling_value
738 What: /sys/.../events/in_rot_from_north_magnetic_raw_thresh_rising_value
739 What: /sys/.../events/in_rot_from_north_magnetic_raw_thresh_falling_value
740 What: /sys/.../events/in_rot_from_north_true_raw_thresh_rising_value
741 What: /sys/.../events/in_rot_from_north_true_raw_thresh_falling_value
742 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_rising_value
743 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_falling_value
744 What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_rising_value
745 What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_falling_value
746 What: /sys/.../events/in_voltageY_supply_raw_thresh_rising_value
747 What: /sys/.../events/in_voltageY_supply_raw_thresh_falling_value
748 What: /sys/.../events/in_voltageY_raw_thresh_rising_value
749 What: /sys/.../events/in_voltageY_raw_thresh_falling_value
750 What: /sys/.../events/in_tempY_raw_thresh_rising_value
751 What: /sys/.../events/in_tempY_raw_thresh_falling_value
752 What: /sys/.../events/in_illuminance0_thresh_falling_value
753 what: /sys/.../events/in_illuminance0_thresh_rising_value
754 what: /sys/.../events/in_proximity0_thresh_falling_value
755 what: /sys/.../events/in_proximity0_thresh_rising_value
756 What: /sys/.../events/in_illuminance_thresh_rising_value
757 What: /sys/.../events/in_illuminance_thresh_falling_value
758 KernelVersion: 2.6.37
759 Contact: linux-iio@vger.kernel.org
761 Specifies the value of threshold that the device is comparing
762 against for the events enabled by
763 <type>Y[_name]_thresh[_rising|falling]_en.
764 If separate attributes exist for the two directions, but
765 direction is not specified for this attribute, then a single
766 threshold value applies to both directions.
767 The raw or input element of the name indicates whether the
768 value is in raw device units or in processed units (as _raw
769 and _input do on sysfs direct channel read attributes).
771 What: /sys/.../events/in_accel_scale
772 What: /sys/.../events/in_accel_peak_scale
773 What: /sys/.../events/in_anglvel_scale
774 What: /sys/.../events/in_magn_scale
775 What: /sys/.../events/in_rot_from_north_magnetic_scale
776 What: /sys/.../events/in_rot_from_north_true_scale
777 What: /sys/.../events/in_voltage_scale
778 What: /sys/.../events/in_voltage_supply_scale
779 What: /sys/.../events/in_temp_scale
780 What: /sys/.../events/in_illuminance_scale
781 What: /sys/.../events/in_proximity_scale
783 Contact: linux-iio@vger.kernel.org
785 Specifies the conversion factor from the standard units
786 to device specific units used to set the event trigger
789 What: /sys/.../events/in_accel_x_thresh_rising_hysteresis
790 What: /sys/.../events/in_accel_x_thresh_falling_hysteresis
791 What: /sys/.../events/in_accel_x_thresh_either_hysteresis
792 What: /sys/.../events/in_accel_y_thresh_rising_hysteresis
793 What: /sys/.../events/in_accel_y_thresh_falling_hysteresis
794 What: /sys/.../events/in_accel_y_thresh_either_hysteresis
795 What: /sys/.../events/in_accel_z_thresh_rising_hysteresis
796 What: /sys/.../events/in_accel_z_thresh_falling_hysteresis
797 What: /sys/.../events/in_accel_z_thresh_either_hysteresis
798 What: /sys/.../events/in_anglvel_x_thresh_rising_hysteresis
799 What: /sys/.../events/in_anglvel_x_thresh_falling_hysteresis
800 What: /sys/.../events/in_anglvel_x_thresh_either_hysteresis
801 What: /sys/.../events/in_anglvel_y_thresh_rising_hysteresis
802 What: /sys/.../events/in_anglvel_y_thresh_falling_hysteresis
803 What: /sys/.../events/in_anglvel_y_thresh_either_hysteresis
804 What: /sys/.../events/in_anglvel_z_thresh_rising_hysteresis
805 What: /sys/.../events/in_anglvel_z_thresh_falling_hysteresis
806 What: /sys/.../events/in_anglvel_z_thresh_either_hysteresis
807 What: /sys/.../events/in_magn_x_thresh_rising_hysteresis
808 What: /sys/.../events/in_magn_x_thresh_falling_hysteresis
809 What: /sys/.../events/in_magn_x_thresh_either_hysteresis
810 What: /sys/.../events/in_magn_y_thresh_rising_hysteresis
811 What: /sys/.../events/in_magn_y_thresh_falling_hysteresis
812 What: /sys/.../events/in_magn_y_thresh_either_hysteresis
813 What: /sys/.../events/in_magn_z_thresh_rising_hysteresis
814 What: /sys/.../events/in_magn_z_thresh_falling_hysteresis
815 What: /sys/.../events/in_magn_z_thresh_either_hysteresis
816 What: /sys/.../events/in_rot_from_north_magnetic_thresh_rising_hysteresis
817 What: /sys/.../events/in_rot_from_north_magnetic_thresh_falling_hysteresis
818 What: /sys/.../events/in_rot_from_north_magnetic_thresh_either_hysteresis
819 What: /sys/.../events/in_rot_from_north_true_thresh_rising_hysteresis
820 What: /sys/.../events/in_rot_from_north_true_thresh_falling_hysteresis
821 What: /sys/.../events/in_rot_from_north_true_thresh_either_hysteresis
822 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_hysteresis
823 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_hysteresis
824 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_either_hysteresis
825 What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_hysteresis
826 What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_hysteresis
827 What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_either_hysteresis
828 What: /sys/.../events/in_voltageY_thresh_rising_hysteresis
829 What: /sys/.../events/in_voltageY_thresh_falling_hysteresis
830 What: /sys/.../events/in_voltageY_thresh_either_hysteresis
831 What: /sys/.../events/in_tempY_thresh_rising_hysteresis
832 What: /sys/.../events/in_tempY_thresh_falling_hysteresis
833 What: /sys/.../events/in_tempY_thresh_either_hysteresis
834 What: /sys/.../events/in_illuminance0_thresh_falling_hysteresis
835 what: /sys/.../events/in_illuminance0_thresh_rising_hysteresis
836 what: /sys/.../events/in_illuminance0_thresh_either_hysteresis
837 what: /sys/.../events/in_proximity0_thresh_falling_hysteresis
838 what: /sys/.../events/in_proximity0_thresh_rising_hysteresis
839 what: /sys/.../events/in_proximity0_thresh_either_hysteresis
841 Contact: linux-iio@vger.kernel.org
843 Specifies the hysteresis of threshold that the device is comparing
844 against for the events enabled by
845 <type>Y[_name]_thresh[_(rising|falling)]_hysteresis.
846 If separate attributes exist for the two directions, but
847 direction is not specified for this attribute, then a single
848 hysteresis value applies to both directions.
849 For falling events the hysteresis is added to the _value attribute for
850 this event to get the upper threshold for when the event goes back to
851 normal, for rising events the hysteresis is subtracted from the _value
852 attribute. E.g. if in_voltage0_raw_thresh_rising_value is set to 1200
853 and in_voltage0_raw_thresh_rising_hysteresis is set to 50. The event
854 will get activated once in_voltage0_raw goes above 1200 and will become
855 deactivated again once the value falls below 1150.
857 What: /sys/.../events/in_accel_x_raw_roc_rising_value
858 What: /sys/.../events/in_accel_x_raw_roc_falling_value
859 What: /sys/.../events/in_accel_y_raw_roc_rising_value
860 What: /sys/.../events/in_accel_y_raw_roc_falling_value
861 What: /sys/.../events/in_accel_z_raw_roc_rising_value
862 What: /sys/.../events/in_accel_z_raw_roc_falling_value
863 What: /sys/.../events/in_anglvel_x_raw_roc_rising_value
864 What: /sys/.../events/in_anglvel_x_raw_roc_falling_value
865 What: /sys/.../events/in_anglvel_y_raw_roc_rising_value
866 What: /sys/.../events/in_anglvel_y_raw_roc_falling_value
867 What: /sys/.../events/in_anglvel_z_raw_roc_rising_value
868 What: /sys/.../events/in_anglvel_z_raw_roc_falling_value
869 What: /sys/.../events/in_magn_x_raw_roc_rising_value
870 What: /sys/.../events/in_magn_x_raw_roc_falling_value
871 What: /sys/.../events/in_magn_y_raw_roc_rising_value
872 What: /sys/.../events/in_magn_y_raw_roc_falling_value
873 What: /sys/.../events/in_magn_z_raw_roc_rising_value
874 What: /sys/.../events/in_magn_z_raw_roc_falling_value
875 What: /sys/.../events/in_rot_from_north_magnetic_raw_roc_rising_value
876 What: /sys/.../events/in_rot_from_north_magnetic_raw_roc_falling_value
877 What: /sys/.../events/in_rot_from_north_true_raw_roc_rising_value
878 What: /sys/.../events/in_rot_from_north_true_raw_roc_falling_value
879 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_rising_value
880 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_falling_value
881 What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_rising_value
882 What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_falling_value
883 What: /sys/.../events/in_voltageY_supply_raw_roc_rising_value
884 What: /sys/.../events/in_voltageY_supply_raw_roc_falling_value
885 What: /sys/.../events/in_voltageY_raw_roc_rising_value
886 What: /sys/.../events/in_voltageY_raw_roc_falling_value
887 What: /sys/.../events/in_tempY_raw_roc_rising_value
888 What: /sys/.../events/in_tempY_raw_roc_falling_value
889 KernelVersion: 2.6.37
890 Contact: linux-iio@vger.kernel.org
892 Specifies the value of rate of change threshold that the
893 device is comparing against for the events enabled by
894 <type>[Y][_name]_roc[_rising|falling]_en.
895 If separate attributes exist for the two directions,
896 but direction is not specified for this attribute,
897 then a single threshold value applies to both directions.
898 The raw or input element of the name indicates whether the
899 value is in raw device units or in processed units (as _raw
900 and _input do on sysfs direct channel read attributes).
902 What: /sys/.../events/in_accel_x_thresh_rising_period
903 What: /sys/.../events/in_accel_x_thresh_falling_period
904 What: /sys/.../events/in_accel_x_roc_rising_period
905 What: /sys/.../events/in_accel_x_roc_falling_period
906 What: /sys/.../events/in_accel_y_thresh_rising_period
907 What: /sys/.../events/in_accel_y_thresh_falling_period
908 What: /sys/.../events/in_accel_y_roc_rising_period
909 What: /sys/.../events/in_accel_y_roc_falling_period
910 What: /sys/.../events/in_accel_z_thresh_rising_period
911 What: /sys/.../events/in_accel_z_thresh_falling_period
912 What: /sys/.../events/in_accel_z_roc_rising_period
913 What: /sys/.../events/in_accel_z_roc_falling_period
914 What: /sys/.../events/in_anglvel_x_thresh_rising_period
915 What: /sys/.../events/in_anglvel_x_thresh_falling_period
916 What: /sys/.../events/in_anglvel_x_roc_rising_period
917 What: /sys/.../events/in_anglvel_x_roc_falling_period
918 What: /sys/.../events/in_anglvel_y_thresh_rising_period
919 What: /sys/.../events/in_anglvel_y_thresh_falling_period
920 What: /sys/.../events/in_anglvel_y_roc_rising_period
921 What: /sys/.../events/in_anglvel_y_roc_falling_period
922 What: /sys/.../events/in_anglvel_z_thresh_rising_period
923 What: /sys/.../events/in_anglvel_z_thresh_falling_period
924 What: /sys/.../events/in_anglvel_z_roc_rising_period
925 What: /sys/.../events/in_anglvel_z_roc_falling_period
926 What: /sys/.../events/in_magn_x_thresh_rising_period
927 What: /sys/.../events/in_magn_x_thresh_falling_period
928 What: /sys/.../events/in_magn_x_roc_rising_period
929 What: /sys/.../events/in_magn_x_roc_falling_period
930 What: /sys/.../events/in_magn_y_thresh_rising_period
931 What: /sys/.../events/in_magn_y_thresh_falling_period
932 What: /sys/.../events/in_magn_y_roc_rising_period
933 What: /sys/.../events/in_magn_y_roc_falling_period
934 What: /sys/.../events/in_magn_z_thresh_rising_period
935 What: /sys/.../events/in_magn_z_thresh_falling_period
936 What: /sys/.../events/in_magn_z_roc_rising_period
937 What: /sys/.../events/in_magn_z_roc_falling_period
938 What: /sys/.../events/in_rot_from_north_magnetic_thresh_rising_period
939 What: /sys/.../events/in_rot_from_north_magnetic_thresh_falling_period
940 What: /sys/.../events/in_rot_from_north_magnetic_roc_rising_period
941 What: /sys/.../events/in_rot_from_north_magnetic_roc_falling_period
942 What: /sys/.../events/in_rot_from_north_true_thresh_rising_period
943 What: /sys/.../events/in_rot_from_north_true_thresh_falling_period
944 What: /sys/.../events/in_rot_from_north_true_roc_rising_period
945 What: /sys/.../events/in_rot_from_north_true_roc_falling_period
946 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_period
947 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_period
948 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_rising_period
949 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_falling_period
950 What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_period
951 What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_period
952 What: /sys/.../events/in_rot_from_north_true_tilt_comp_roc_rising_period
953 What: /sys/.../events/in_rot_from_north_true_tilt_comp_roc_falling_period
954 What: /sys/.../events/in_voltageY_supply_thresh_rising_period
955 What: /sys/.../events/in_voltageY_supply_thresh_falling_period
956 What: /sys/.../events/in_voltageY_supply_roc_rising_period
957 What: /sys/.../events/in_voltageY_supply_roc_falling_period
958 What: /sys/.../events/in_voltageY_thresh_rising_period
959 What: /sys/.../events/in_voltageY_thresh_falling_period
960 What: /sys/.../events/in_voltageY_roc_rising_period
961 What: /sys/.../events/in_voltageY_roc_falling_period
962 What: /sys/.../events/in_tempY_thresh_rising_period
963 What: /sys/.../events/in_tempY_thresh_falling_period
964 What: /sys/.../events/in_tempY_roc_rising_period
965 What: /sys/.../events/in_tempY_roc_falling_period
966 What: /sys/.../events/in_accel_x&y&z_mag_falling_period
967 What: /sys/.../events/in_intensity0_thresh_period
968 What: /sys/.../events/in_proximity0_thresh_period
969 What: /sys/.../events/in_activity_still_thresh_rising_period
970 What: /sys/.../events/in_activity_still_thresh_falling_period
971 What: /sys/.../events/in_activity_walking_thresh_rising_period
972 What: /sys/.../events/in_activity_walking_thresh_falling_period
973 What: /sys/.../events/in_activity_jogging_thresh_rising_period
974 What: /sys/.../events/in_activity_jogging_thresh_falling_period
975 What: /sys/.../events/in_activity_running_thresh_rising_period
976 What: /sys/.../events/in_activity_running_thresh_falling_period
977 What: /sys/.../events/in_illuminance_thresh_either_period
978 KernelVersion: 2.6.37
979 Contact: linux-iio@vger.kernel.org
981 Period of time (in seconds) for which the condition must be
982 met before an event is generated. If direction is not
983 specified then this period applies to both directions.
985 What: /sys/.../events/in_accel_thresh_rising_low_pass_filter_3db
986 What: /sys/.../events/in_anglvel_thresh_rising_low_pass_filter_3db
987 What: /sys/.../events/in_magn_thresh_rising_low_pass_filter_3db
989 Contact: linux-iio@vger.kernel.org
991 If a low pass filter can be applied to the event generation
992 this property gives its 3db frequency in Hz.
993 A value of zero disables the filter.
995 What: /sys/.../events/in_accel_thresh_rising_high_pass_filter_3db
996 What: /sys/.../events/in_anglvel_thresh_rising_high_pass_filter_3db
997 What: /sys/.../events/in_magn_thresh_rising_high_pass_filter_3db
999 Contact: linux-iio@vger.kernel.org
1001 If a high pass filter can be applied to the event generation
1002 this property gives its 3db frequency in Hz.
1003 A value of zero disables the filter.
1005 What: /sys/.../events/in_activity_still_thresh_rising_en
1006 What: /sys/.../events/in_activity_still_thresh_falling_en
1007 What: /sys/.../events/in_activity_walking_thresh_rising_en
1008 What: /sys/.../events/in_activity_walking_thresh_falling_en
1009 What: /sys/.../events/in_activity_jogging_thresh_rising_en
1010 What: /sys/.../events/in_activity_jogging_thresh_falling_en
1011 What: /sys/.../events/in_activity_running_thresh_rising_en
1012 What: /sys/.../events/in_activity_running_thresh_falling_en
1014 Contact: linux-iio@vger.kernel.org
1016 Enables or disables activitity events. Depending on direction
1017 an event is generated when sensor ENTERS or LEAVES a given state.
1019 What: /sys/.../events/in_activity_still_thresh_rising_value
1020 What: /sys/.../events/in_activity_still_thresh_falling_value
1021 What: /sys/.../events/in_activity_walking_thresh_rising_value
1022 What: /sys/.../events/in_activity_walking_thresh_falling_value
1023 What: /sys/.../events/in_activity_jogging_thresh_rising_value
1024 What: /sys/.../events/in_activity_jogging_thresh_falling_value
1025 What: /sys/.../events/in_activity_running_thresh_rising_value
1026 What: /sys/.../events/in_activity_running_thresh_falling_value
1028 Contact: linux-iio@vger.kernel.org
1030 Confidence value (in units as percentage) to be used
1031 for deciding when an event should be generated. E.g for
1032 running: If the confidence value reported by the sensor
1033 is greater than in_activity_running_thresh_rising_value
1034 then the sensor ENTERS running state. Conversely, if the
1035 confidence value reported by the sensor is lower than
1036 in_activity_running_thresh_falling_value then the sensor
1037 is LEAVING running state.
1039 What: /sys/.../iio:deviceX/events/in_accel_mag_en
1040 What: /sys/.../iio:deviceX/events/in_accel_mag_rising_en
1041 What: /sys/.../iio:deviceX/events/in_accel_mag_falling_en
1042 What: /sys/.../iio:deviceX/events/in_accel_x_mag_en
1043 What: /sys/.../iio:deviceX/events/in_accel_x_mag_rising_en
1044 What: /sys/.../iio:deviceX/events/in_accel_x_mag_falling_en
1045 What: /sys/.../iio:deviceX/events/in_accel_y_mag_en
1046 What: /sys/.../iio:deviceX/events/in_accel_y_mag_rising_en
1047 What: /sys/.../iio:deviceX/events/in_accel_y_mag_falling_en
1048 What: /sys/.../iio:deviceX/events/in_accel_z_mag_en
1049 What: /sys/.../iio:deviceX/events/in_accel_z_mag_rising_en
1050 What: /sys/.../iio:deviceX/events/in_accel_z_mag_falling_en
1051 What: /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_rising_en
1052 What: /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_falling_en
1053 KernelVersion: 2.6.37
1054 Contact: linux-iio@vger.kernel.org
1056 Similar to in_accel_x_thresh[_rising|_falling]_en, but here the
1057 magnitude of the channel is compared to the threshold, not its
1060 What: /sys/.../events/in_accel_raw_mag_value
1061 What: /sys/.../events/in_accel_x_raw_mag_rising_value
1062 What: /sys/.../events/in_accel_y_raw_mag_rising_value
1063 What: /sys/.../events/in_accel_z_raw_mag_rising_value
1064 KernelVersion: 2.6.37
1065 Contact: linux-iio@vger.kernel.org
1067 The value to which the magnitude of the channel is compared. If
1068 number or direction is not specified, applies to all channels of
1071 What: /sys/.../events/in_steps_change_en
1073 Contact: linux-iio@vger.kernel.org
1075 Event generated when channel passes a threshold on the absolute
1076 change in value. E.g. for steps: a step change event is
1077 generated each time the user takes N steps, where N is set using
1078 in_steps_change_value.
1080 What: /sys/.../events/in_steps_change_value
1082 Contact: linux-iio@vger.kernel.org
1084 Specifies the value of change threshold that the
1085 device is comparing against for the events enabled by
1086 <type>[Y][_name]_roc[_rising|falling|]_en. E.g. for steps:
1087 if set to 3, a step change event will be generated every 3
1090 What: /sys/bus/iio/devices/iio:deviceX/trigger/current_trigger
1091 KernelVersion: 2.6.35
1092 Contact: linux-iio@vger.kernel.org
1094 The name of the trigger source being used, as per string given
1095 in /sys/class/iio/triggerY/name.
1097 What: /sys/bus/iio/devices/iio:deviceX/buffer/length
1098 KernelVersion: 2.6.35
1099 Contact: linux-iio@vger.kernel.org
1101 Number of scans contained by the buffer.
1103 What: /sys/bus/iio/devices/iio:deviceX/buffer/enable
1104 KernelVersion: 2.6.35
1105 Contact: linux-iio@vger.kernel.org
1107 Actually start the buffer capture up. Will start trigger
1108 if first device and appropriate.
1110 What: /sys/bus/iio/devices/iio:deviceX/scan_elements
1111 KernelVersion: 2.6.37
1112 Contact: linux-iio@vger.kernel.org
1114 Directory containing interfaces for elements that will be
1115 captured for a single triggered sample set in the buffer.
1117 What: /sys/.../iio:deviceX/scan_elements/in_accel_x_en
1118 What: /sys/.../iio:deviceX/scan_elements/in_accel_y_en
1119 What: /sys/.../iio:deviceX/scan_elements/in_accel_z_en
1120 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_x_en
1121 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_y_en
1122 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_z_en
1123 What: /sys/.../iio:deviceX/scan_elements/in_magn_x_en
1124 What: /sys/.../iio:deviceX/scan_elements/in_magn_y_en
1125 What: /sys/.../iio:deviceX/scan_elements/in_magn_z_en
1126 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_en
1127 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_en
1128 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_en
1129 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_en
1130 What: /sys/.../iio:deviceX/scan_elements/in_timestamp_en
1131 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_en
1132 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_en
1133 What: /sys/.../iio:deviceX/scan_elements/in_voltageY-voltageZ_en
1134 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_en
1135 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_en
1136 What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_en
1137 What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_en
1138 What: /sys/.../iio:deviceX/scan_elements/in_incli_x_en
1139 What: /sys/.../iio:deviceX/scan_elements/in_incli_y_en
1140 What: /sys/.../iio:deviceX/scan_elements/in_pressureY_en
1141 What: /sys/.../iio:deviceX/scan_elements/in_pressure_en
1142 What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_en
1143 What: /sys/.../iio:deviceX/scan_elements/in_proximity_en
1144 KernelVersion: 2.6.37
1145 Contact: linux-iio@vger.kernel.org
1147 Scan element control for triggered data capture.
1149 What: /sys/.../iio:deviceX/scan_elements/in_accel_type
1150 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_type
1151 What: /sys/.../iio:deviceX/scan_elements/in_magn_type
1152 What: /sys/.../iio:deviceX/scan_elements/in_incli_type
1153 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_type
1154 What: /sys/.../iio:deviceX/scan_elements/in_voltage_type
1155 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_type
1156 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_type
1157 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_type
1158 What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_type
1159 What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_type
1160 What: /sys/.../iio:deviceX/scan_elements/in_timestamp_type
1161 What: /sys/.../iio:deviceX/scan_elements/in_pressureY_type
1162 What: /sys/.../iio:deviceX/scan_elements/in_pressure_type
1163 What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_type
1164 What: /sys/.../iio:deviceX/scan_elements/in_proximity_type
1165 KernelVersion: 2.6.37
1166 Contact: linux-iio@vger.kernel.org
1168 Description of the scan element data storage within the buffer
1169 and hence the form in which it is read from user-space.
1170 Form is [be|le]:[s|u]bits/storagebits[>>shift].
1171 be or le specifies big or little endian. s or u specifies if
1172 signed (2's complement) or unsigned. bits is the number of bits
1173 of data and storagebits is the space (after padding) that it
1174 occupies in the buffer. shift if specified, is the shift that
1175 needs to be applied prior to masking out unused bits. Some
1176 devices put their data in the middle of the transferred elements
1177 with additional information on both sides. Note that some
1178 devices will have additional information in the unused bits
1179 so to get a clean value, the bits value must be used to mask
1180 the buffer output value appropriately. The storagebits value
1181 also specifies the data alignment. So s48/64>>2 will be a
1182 signed 48 bit integer stored in a 64 bit location aligned to
1183 a 64 bit boundary. To obtain the clean value, shift right 2
1184 and apply a mask to zero the top 16 bits of the result.
1185 For other storage combinations this attribute will be extended
1188 What: /sys/.../iio:deviceX/scan_elements/in_accel_type_available
1189 KernelVersion: 2.6.37
1190 Contact: linux-iio@vger.kernel.org
1192 If the type parameter can take one of a small set of values,
1193 this attribute lists them.
1195 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_index
1196 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_index
1197 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_index
1198 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_index
1199 What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_index
1200 What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_index
1201 What: /sys/.../iio:deviceX/scan_elements/in_accel_x_index
1202 What: /sys/.../iio:deviceX/scan_elements/in_accel_y_index
1203 What: /sys/.../iio:deviceX/scan_elements/in_accel_z_index
1204 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_x_index
1205 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_y_index
1206 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_z_index
1207 What: /sys/.../iio:deviceX/scan_elements/in_magn_x_index
1208 What: /sys/.../iio:deviceX/scan_elements/in_magn_y_index
1209 What: /sys/.../iio:deviceX/scan_elements/in_magn_z_index
1210 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_index
1211 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_index
1212 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_index
1213 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_index
1214 What: /sys/.../iio:deviceX/scan_elements/in_incli_x_index
1215 What: /sys/.../iio:deviceX/scan_elements/in_incli_y_index
1216 What: /sys/.../iio:deviceX/scan_elements/in_timestamp_index
1217 What: /sys/.../iio:deviceX/scan_elements/in_pressureY_index
1218 What: /sys/.../iio:deviceX/scan_elements/in_pressure_index
1219 What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_index
1220 What: /sys/.../iio:deviceX/scan_elements/in_proximity_index
1221 KernelVersion: 2.6.37
1222 Contact: linux-iio@vger.kernel.org
1224 A single positive integer specifying the position of this
1225 scan element in the buffer. Note these are not dependent on
1226 what is enabled and may not be contiguous. Thus for user-space
1227 to establish the full layout these must be used in conjunction
1228 with all _en attributes to establish which channels are present,
1229 and the relevant _type attributes to establish the data storage
1232 What: /sys/.../iio:deviceX/in_activity_still_input
1233 What: /sys/.../iio:deviceX/in_activity_walking_input
1234 What: /sys/.../iio:deviceX/in_activity_jogging_input
1235 What: /sys/.../iio:deviceX/in_activity_running_input
1237 Contact: linux-iio@vger.kernel.org
1239 This attribute is used to read the confidence for an activity
1240 expressed in units as percentage.
1242 What: /sys/.../iio:deviceX/in_anglvel_z_quadrature_correction_raw
1243 KernelVersion: 2.6.38
1244 Contact: linux-iio@vger.kernel.org
1246 This attribute is used to read the amount of quadrature error
1247 present in the device at a given time.
1249 What: /sys/.../iio:deviceX/in_accelX_power_mode
1251 Contact: linux-iio@vger.kernel.org
1253 Specifies the chip power mode.
1254 low_noise: reduce noise level from ADC,
1255 low_power: enable low current consumption.
1256 For a list of available output power modes read
1257 in_accel_power_mode_available.
1259 What: /sys/.../iio:deviceX/in_energy_input
1260 What: /sys/.../iio:deviceX/in_energy_raw
1262 Contact: linux-iio@vger.kernel.org
1264 This attribute is used to read the energy value reported by the
1265 device (e.g.: human activity sensors report energy burnt by the
1266 user). Units after application of scale are Joules.
1268 What: /sys/.../iio:deviceX/in_distance_input
1269 What: /sys/.../iio:deviceX/in_distance_raw
1271 Contact: linux-iio@vger.kernel.org
1273 This attribute is used to read the measured distance to an object
1274 or the distance covered by the user since the last reboot while
1275 activated. Units after application of scale are meters.
1277 What: /sys/bus/iio/devices/iio:deviceX/store_eeprom
1278 KernelVersion: 3.4.0
1279 Contact: linux-iio@vger.kernel.org
1281 Writing '1' stores the current device configuration into
1282 on-chip EEPROM. After power-up or chip reset the device will
1283 automatically load the saved configuration.
1285 What: /sys/.../iio:deviceX/in_proximity_raw
1286 What: /sys/.../iio:deviceX/in_proximity_input
1287 What: /sys/.../iio:deviceX/in_proximityY_raw
1289 Contact: linux-iio@vger.kernel.org
1291 Proximity measurement indicating that some
1292 object is near the sensor, usually by observing
1293 reflectivity of infrared or ultrasound emitted.
1294 Often these sensors are unit less and as such conversion
1295 to SI units is not possible. Higher proximity measurements
1296 indicate closer objects, and vice versa. Units after
1297 application of scale and offset are meters.
1299 What: /sys/.../iio:deviceX/in_illuminance_input
1300 What: /sys/.../iio:deviceX/in_illuminance_raw
1301 What: /sys/.../iio:deviceX/in_illuminanceY_input
1302 What: /sys/.../iio:deviceX/in_illuminanceY_raw
1303 What: /sys/.../iio:deviceX/in_illuminanceY_mean_raw
1304 What: /sys/.../iio:deviceX/in_illuminance_ir_raw
1305 What: /sys/.../iio:deviceX/in_illuminance_clear_raw
1307 Contact: linux-iio@vger.kernel.org
1309 Illuminance measurement, units after application of scale
1312 What: /sys/.../iio:deviceX/in_intensityY_raw
1313 What: /sys/.../iio:deviceX/in_intensityY_ir_raw
1314 What: /sys/.../iio:deviceX/in_intensityY_both_raw
1315 What: /sys/.../iio:deviceX/in_intensityY_uv_raw
1316 What: /sys/.../iio:deviceX/in_intensityY_duv_raw
1318 Contact: linux-iio@vger.kernel.org
1320 Unit-less light intensity. Modifiers both and ir indicate
1321 that measurements contain visible and infrared light
1322 components or just infrared light, respectively. Modifier
1323 uv indicates that measurements contain ultraviolet light
1324 components. Modifier duv indicates that measurements
1325 contain deep ultraviolet light components.
1327 What: /sys/.../iio:deviceX/in_uvindex_input
1329 Contact: linux-iio@vger.kernel.org
1331 UV light intensity index measuring the human skin's response to
1332 different wavelength of sunlight weighted according to the
1333 standardised CIE Erythemal Action Spectrum. UV index values range
1334 from 0 (low) to >=11 (extreme).
1336 What: /sys/.../iio:deviceX/in_intensity_red_integration_time
1337 What: /sys/.../iio:deviceX/in_intensity_green_integration_time
1338 What: /sys/.../iio:deviceX/in_intensity_blue_integration_time
1339 What: /sys/.../iio:deviceX/in_intensity_clear_integration_time
1340 What: /sys/.../iio:deviceX/in_illuminance_integration_time
1342 Contact: linux-iio@vger.kernel.org
1344 This attribute is used to get/set the integration time in
1347 What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_integration_time
1349 Contact: linux-iio@vger.kernel.org
1351 Number of seconds in which to compute speed.
1353 What: /sys/bus/iio/devices/iio:deviceX/in_rot_quaternion_raw
1355 Contact: linux-iio@vger.kernel.org
1357 Raw value of quaternion components using a format
1358 x y z w. Here x, y, and z component represents the axis about
1359 which a rotation will occur and w component represents the
1362 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_raw
1363 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_raw
1364 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_raw
1365 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_raw
1367 Contact: linux-iio@vger.kernel.org
1369 Raw value of rotation from true/magnetic north measured with
1370 or without compensation from tilt sensors.
1372 What: /sys/bus/iio/devices/iio:deviceX/in_currentX_raw
1373 What: /sys/bus/iio/devices/iio:deviceX/in_currentX_i_raw
1374 What: /sys/bus/iio/devices/iio:deviceX/in_currentX_q_raw
1376 Contact: linux-iio@vger.kernel.org
1378 Raw current measurement from channel X. Units are in milliamps
1379 after application of scale and offset. If no offset or scale is
1380 present, output should be considered as processed with the
1383 Channels with 'i' and 'q' modifiers always exist in pairs and both
1384 channels refer to the same signal. The 'i' channel contains the in-phase
1385 component of the signal while the 'q' channel contains the quadrature
1388 What: /sys/.../iio:deviceX/in_energy_en
1389 What: /sys/.../iio:deviceX/in_distance_en
1390 What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_en
1391 What: /sys/.../iio:deviceX/in_steps_en
1393 Contact: linux-iio@vger.kernel.org
1395 Activates a device feature that runs in firmware/hardware.
1396 E.g. for steps: the pedometer saves power while not used;
1397 when activated, it will count the steps taken by the user in
1398 firmware and export them through in_steps_input.
1400 What: /sys/.../iio:deviceX/in_steps_input
1402 Contact: linux-iio@vger.kernel.org
1404 This attribute is used to read the number of steps taken by the user
1405 since the last reboot while activated.
1407 What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_input
1408 What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_raw
1410 Contact: linux-iio@vger.kernel.org
1412 This attribute is used to read the current speed value of the
1413 user (which is the norm or magnitude of the velocity vector).
1414 Units after application of scale are m/s.
1416 What: /sys/.../iio:deviceX/in_steps_debounce_count
1418 Contact: linux-iio@vger.kernel.org
1420 Specifies the number of steps that must occur within
1421 in_steps_filter_debounce_time for the pedometer to decide the
1422 consumer is making steps.
1424 What: /sys/.../iio:deviceX/in_steps_debounce_time
1426 Contact: linux-iio@vger.kernel.org
1428 Specifies number of seconds in which we compute the steps
1429 that occur in order to decide if the consumer is making steps.
1431 What: /sys/bus/iio/devices/iio:deviceX/buffer/watermark
1433 Contact: linux-iio@vger.kernel.org
1435 A single positive integer specifying the maximum number of scan
1436 elements to wait for.
1437 Poll will block until the watermark is reached.
1438 Blocking read will wait until the minimum between the requested
1439 read amount or the low water mark is available.
1440 Non-blocking read will retrieve the available samples from the
1441 buffer even if there are less samples then watermark level. This
1442 allows the application to block on poll with a timeout and read
1443 the available samples after the timeout expires and thus have a
1444 maximum delay guarantee.
1446 What: /sys/bus/iio/devices/iio:deviceX/buffer/data_available
1448 Contact: linux-iio@vger.kernel.org
1450 A read-only value indicating the bytes of data available in the
1451 buffer. In the case of an output buffer, this indicates the
1452 amount of empty space available to write data to. In the case of
1453 an input buffer, this indicates the amount of data available for
1456 What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_enabled
1458 Contact: linux-iio@vger.kernel.org
1460 A read-only boolean value that indicates if the hardware fifo is
1461 currently enabled or disabled. If the device does not have a
1462 hardware fifo this entry is not present.
1463 The hardware fifo is enabled when the buffer is enabled if the
1464 current hardware fifo watermark level is set and other current
1465 device settings allows it (e.g. if a trigger is set that samples
1466 data differently that the hardware fifo does then hardware fifo
1468 If the hardware fifo is enabled and the level of the hardware
1469 fifo reaches the hardware fifo watermark level the device will
1470 flush its hardware fifo to the device buffer. Doing a non
1471 blocking read on the device when no samples are present in the
1472 device buffer will also force a flush.
1473 When the hardware fifo is enabled there is no need to use a
1474 trigger to use buffer mode since the watermark settings
1475 guarantees that the hardware fifo is flushed to the device
1478 What: /sys/bus/iio/devices/iio:device*/buffer/hwfifo_timeout
1480 Contact: linux-iio@vger.kernel.org
1482 A read/write property to provide capability to delay reporting of
1483 samples till a timeout is reached. This allows host processors to
1484 sleep, while the sensor is storing samples in its internal fifo.
1485 The maximum timeout in seconds can be specified by setting
1486 hwfifo_timeout.The current delay can be read by reading
1487 hwfifo_timeout. A value of 0 means that there is no timeout.
1489 What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark
1491 Contact: linux-iio@vger.kernel.org
1493 Read-only entry that contains a single integer specifying the
1494 current watermark level for the hardware fifo. If the device
1495 does not have a hardware fifo this entry is not present.
1496 The watermark level for the hardware fifo is set by the driver
1497 based on the value set by the user in buffer/watermark but
1498 taking into account hardware limitations (e.g. most hardware
1499 buffers are limited to 32-64 samples, some hardware buffers
1500 watermarks are fixed or have minimum levels). A value of 0
1501 means that the hardware watermark is unset.
1503 What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_min
1505 Contact: linux-iio@vger.kernel.org
1507 A single positive integer specifying the minimum watermark level
1508 for the hardware fifo of this device. If the device does not
1509 have a hardware fifo this entry is not present.
1510 If the user sets buffer/watermark to a value less than this one,
1511 then the hardware watermark will remain unset.
1513 What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_max
1515 Contact: linux-iio@vger.kernel.org
1517 A single positive integer specifying the maximum watermark level
1518 for the hardware fifo of this device. If the device does not
1519 have a hardware fifo this entry is not present.
1520 If the user sets buffer/watermark to a value greater than this
1521 one, then the hardware watermark will be capped at this value.
1523 What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_available
1525 Contact: linux-iio@vger.kernel.org
1527 A list of positive integers specifying the available watermark
1528 levels for the hardware fifo. This entry is optional and if it
1529 is not present it means that all the values between
1530 hwfifo_watermark_min and hwfifo_watermark_max are supported.
1531 If the user sets buffer/watermark to a value greater than
1532 hwfifo_watermak_min but not equal to any of the values in this
1533 list, the driver will chose an appropriate value for the
1534 hardware fifo watermark level.
1536 What: /sys/bus/iio/devices/iio:deviceX/in_temp_calibemissivity
1537 What: /sys/bus/iio/devices/iio:deviceX/in_tempX_calibemissivity
1538 What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_calibemissivity
1539 What: /sys/bus/iio/devices/iio:deviceX/in_tempX_object_calibemissivity
1541 Contact: linux-iio@vger.kernel.org
1543 The emissivity ratio of the surface in the field of view of the
1544 contactless temperature sensor. Emissivity varies from 0 to 1,
1545 with 1 being the emissivity of a black body.
1547 What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_oversampling_ratio
1548 What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_oversampling_ratio
1549 What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_oversampling_ratio
1551 Contact: linux-iio@vger.kernel.org
1553 Hardware applied number of measurements for acquiring one
1554 data point. The HW will do <type>[_name]_oversampling_ratio
1555 measurements and return the average value as output data. Each
1556 value resulted from <type>[_name]_oversampling_ratio measurements
1557 is considered as one sample for <type>[_name]_sampling_frequency.
1559 What: /sys/bus/iio/devices/iio:deviceX/in_concentration_raw
1560 What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_raw
1561 What: /sys/bus/iio/devices/iio:deviceX/in_concentration_co2_raw
1562 What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_co2_raw
1563 What: /sys/bus/iio/devices/iio:deviceX/in_concentration_ethanol_raw
1564 What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_ethanol_raw
1565 What: /sys/bus/iio/devices/iio:deviceX/in_concentration_h2_raw
1566 What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_h2_raw
1567 What: /sys/bus/iio/devices/iio:deviceX/in_concentration_voc_raw
1568 What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_voc_raw
1570 Contact: linux-iio@vger.kernel.org
1572 Raw (unscaled no offset etc.) percentage reading of a substance.
1574 What: /sys/bus/iio/devices/iio:deviceX/in_resistance_raw
1575 What: /sys/bus/iio/devices/iio:deviceX/in_resistanceX_raw
1576 What: /sys/bus/iio/devices/iio:deviceX/out_resistance_raw
1577 What: /sys/bus/iio/devices/iio:deviceX/out_resistanceX_raw
1579 Contact: linux-iio@vger.kernel.org
1581 Raw (unscaled no offset etc.) resistance reading that can be processed
1584 What: /sys/bus/iio/devices/iio:deviceX/heater_enable
1585 KernelVersion: 4.1.0
1586 Contact: linux-iio@vger.kernel.org
1588 '1' (enable) or '0' (disable) specifying the enable
1589 of heater function. Same reading values apply
1590 This ABI is especially applicable for humidity sensors
1591 to heatup the device and get rid of any condensation
1592 in some humidity environment
1594 What: /sys/bus/iio/devices/iio:deviceX/in_ph_raw
1596 Contact: linux-iio@vger.kernel.org
1598 Raw (unscaled no offset etc.) pH reading of a substance as a negative
1599 base-10 logarithm of hydrodium ions in a litre of water.
1601 What: /sys/bus/iio/devices/iio:deviceX/mount_matrix
1602 What: /sys/bus/iio/devices/iio:deviceX/in_mount_matrix
1603 What: /sys/bus/iio/devices/iio:deviceX/out_mount_matrix
1604 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_mount_matrix
1605 What: /sys/bus/iio/devices/iio:deviceX/in_accel_mount_matrix
1607 Contact: linux-iio@vger.kernel.org
1609 Mounting matrix for IIO sensors. This is a rotation matrix which
1610 informs userspace about sensor chip's placement relative to the
1611 main hardware it is mounted on.
1612 Main hardware placement is defined according to the local
1613 reference frame related to the physical quantity the sensor
1615 Given that the rotation matrix is defined in a board specific
1616 way (platform data and / or device-tree), the main hardware
1617 reference frame definition is left to the implementor's choice
1618 (see below for a magnetometer example).
1619 Applications should apply this rotation matrix to samples so
1620 that when main hardware reference frame is aligned onto local
1621 reference frame, then sensor chip reference frame is also
1622 perfectly aligned with it.
1623 Matrix is a 3x3 unitary matrix and typically looks like
1624 [0, 1, 0; 1, 0, 0; 0, 0, -1]. Identity matrix
1625 [1, 0, 0; 0, 1, 0; 0, 0, 1] means sensor chip and main hardware
1626 are perfectly aligned with each other.
1628 For example, a mounting matrix for a magnetometer sensor informs
1629 userspace about sensor chip's ORIENTATION relative to the main
1631 More specifically, main hardware orientation is defined with
1632 respect to the LOCAL EARTH GEOMAGNETIC REFERENCE FRAME where :
1633 * Y is in the ground plane and positive towards magnetic North ;
1634 * X is in the ground plane, perpendicular to the North axis and
1635 positive towards the East ;
1636 * Z is perpendicular to the ground plane and positive upwards.
1638 An implementor might consider that for a hand-held device, a
1639 'natural' orientation would be 'front facing camera at the top'.
1640 The main hardware reference frame could then be described as :
1641 * Y is in the plane of the screen and is positive towards the
1643 * X is in the plane of the screen, perpendicular to Y axis, and
1644 positive towards the right hand side of the screen ;
1645 * Z is perpendicular to the screen plane and positive out of the
1647 Another example for a quadrotor UAV might be :
1648 * Y is in the plane of the propellers and positive towards the
1650 * X is in the plane of the propellers, perpendicular to Y axis,
1651 and positive towards the starboard side of the UAV ;
1652 * Z is perpendicular to propellers plane and positive upwards.
1654 What: /sys/bus/iio/devices/iio:deviceX/in_electricalconductivity_raw
1656 Contact: linux-iio@vger.kernel.org
1658 Raw (unscaled no offset etc.) electric conductivity reading that
1659 can be processed to siemens per meter.
1661 What: /sys/bus/iio/devices/iio:deviceX/in_countY_raw
1663 Contact: linux-iio@vger.kernel.org
1665 This interface is deprecated; please use the Counter subsystem.
1667 Raw counter device counts from channel Y. For quadrature
1668 counters, multiplication by an available [Y]_scale results in
1669 the counts of a single quadrature signal phase from channel Y.
1671 What: /sys/bus/iio/devices/iio:deviceX/in_indexY_raw
1673 Contact: linux-iio@vger.kernel.org
1675 This interface is deprecated; please use the Counter subsystem.
1677 Raw counter device index value from channel Y. This attribute
1678 provides an absolute positional reference (e.g. a pulse once per
1679 revolution) which may be used to home positional systems as
1682 What: /sys/bus/iio/devices/iio:deviceX/in_count_count_direction_available
1684 Contact: linux-iio@vger.kernel.org
1686 This interface is deprecated; please use the Counter subsystem.
1688 A list of possible counting directions which are:
1689 - "up" : counter device is increasing.
1690 - "down": counter device is decreasing.
1692 What: /sys/bus/iio/devices/iio:deviceX/in_countY_count_direction
1694 Contact: linux-iio@vger.kernel.org
1696 This interface is deprecated; please use the Counter subsystem.
1698 Raw counter device counters direction for channel Y.
1700 What: /sys/bus/iio/devices/iio:deviceX/in_phaseY_raw
1702 Contact: linux-iio@vger.kernel.org
1704 Raw (unscaled) phase difference reading from channel Y
1705 that can be processed to radians.
1707 What: /sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm1_input
1708 What: /sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm1_input
1709 What: /sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm2p5_input
1710 What: /sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm2p5_input
1711 What: /sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm4_input
1712 What: /sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm4_input
1713 What: /sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm10_input
1714 What: /sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm10_input
1716 Contact: linux-iio@vger.kernel.org
1718 Mass concentration reading of particulate matter in ug / m3.
1719 pmX consists of particles with aerodynamic diameter less or
1720 equal to X micrometers.
1722 What: /sys/bus/iio/devices/iio:deviceX/events/in_illuminance_period_available
1725 Contact: linux-iio@vger.kernel.org
1727 List of valid periods (in seconds) for which the light intensity
1728 must be above the threshold level before interrupt is asserted.
1730 What: /sys/bus/iio/devices/iio:deviceX/in_filter_notch_center_frequency
1732 Contact: linux-iio@vger.kernel.org
1734 Center frequency in Hz for a notch filter. Used i.e. for line
1737 What: /sys/bus/iio/devices/iio:deviceX/in_temp_thermocouple_type
1739 Contact: linux-iio@vger.kernel.org
1741 One of the following thermocouple types: B, E, J, K, N, R, S, T.
git.samba.org / sfrench / cifs-2.6.git / blob