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+What: /sys/bus/iio/devices/iio:deviceX/in_concentration_co2_calibration_factory
+Date: August 2021
+KernelVersion: 5.16
+Contact: Jacopo Mondi <jacopo@jmondi.org>
+Description:
+ Writing '1' triggers a 'Factory' calibration cycle.
+
+What: /sys/bus/iio/devices/iio:deviceX/in_concentration_co2_calibration_background
+Date: August 2021
+KernelVersion: 5.16
+Contact: Jacopo Mondi <jacopo@jmondi.org>
+Description:
+ Writing '1' triggers a 'Background' calibration cycle.
+
+What: /sys/bus/iio/devices/iio:deviceX/error_status_available
+Date: August 2021
+KernelVersion: 5.16
+Contact: Jacopo Mondi <jacopo@jmondi.org>
+Description:
+ Reading returns the list of possible chip error status.
+ Available options are:
+ - 'error_fatal': Analog front-end initialization error
+ - 'error_i2c': Read/write to non-existing register
+ - 'error_algorithm': Corrupted parameters
+ - 'error_calibration': Calibration has failed
+ - 'error_self_diagnostic': Internal interface failure
+ - 'error_out_of_range': Measured concentration out of scale
+ - 'error_memory': Error during memory operations
+ - 'error_no_measurement': Cleared at first measurement
+ - 'error_low_voltage': Sensor regulated voltage too low
+ - 'error_measurement_timeout': Unable to complete measurement
+
+What: /sys/bus/iio/devices/iio:deviceX/error_status
+Date: August 2021
+KernelVersion: 5.16
+Contact: Jacopo Mondi <jacopo@jmondi.org>
+Description:
+ Reading returns the current chip error status.