diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-bus-iio-chemical-sgp40')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-iio-chemical-sgp40 | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-chemical-sgp40 b/Documentation/ABI/testing/sysfs-bus-iio-chemical-sgp40 new file mode 100644 index 000000000000..469a7c00fad4 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-iio-chemical-sgp40 @@ -0,0 +1,31 @@ +What: /sys/bus/iio/devices/iio:deviceX/out_temp_raw +Date: August 2021 +KernelVersion: 5.15 +Contact: Andreas Klinger <ak@it-klinger.de> +Description: + Set the temperature. This value is sent to the sensor for + temperature compensation. + Default value: 25000 (25 °C) + +What: /sys/bus/iio/devices/iio:deviceX/out_humidityrelative_raw +Date: August 2021 +KernelVersion: 5.15 +Contact: Andreas Klinger <ak@it-klinger.de> +Description: + Set the relative humidity. This value is sent to the sensor for + humidity compensation. + Default value: 50000 (50 % relative humidity) + +What: /sys/bus/iio/devices/iio:deviceX/in_resistance_calibbias +Date: August 2021 +KernelVersion: 5.15 +Contact: Andreas Klinger <ak@it-klinger.de> +Description: + Set the bias value for the resistance which is used for + calculation of in_concentration_input as follows: + + x = (in_resistance_raw - in_resistance_calibbias) * 0.65 + + in_concentration_input = 500 / (1 + e^x) + + Default value: 30000 |