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Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-iio-scd30 | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-scd30 b/Documentation/ABI/testing/sysfs-bus-iio-scd30 new file mode 100644 index 000000000000..b9712f390bec --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-iio-scd30 @@ -0,0 +1,34 @@ +What: /sys/bus/iio/devices/iio:deviceX/calibration_auto_enable +Date: June 2020 +KernelVersion: 5.8 +Contact: linux-iio@vger.kernel.org +Description: + Contaminants build-up in the measurement chamber or optical + elements deterioration leads to sensor drift. + + One can compensate for sensor drift by using automatic self + calibration procedure (asc). + + Writing 1 or 0 to this attribute will respectively activate or + deactivate asc. + + Upon reading current asc status is returned. + +What: /sys/bus/iio/devices/iio:deviceX/calibration_forced_value +Date: June 2020 +KernelVersion: 5.8 +Contact: linux-iio@vger.kernel.org +Description: + Contaminants build-up in the measurement chamber or optical + elements deterioration leads to sensor drift. + + One can compensate for sensor drift by using forced + recalibration (frc). This is useful in case there's known + co2 reference available nearby the sensor. + + Picking value from the range [400 1 2000] and writing it to the + sensor will set frc. + + Upon reading current frc value is returned. Note that after + power cycling default value (i.e 400) is returned even though + internally sensor had recalibrated itself. |