| 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. |
