Hi Lars, 2016-09-06 12:31 GMT+02:00 Lars-Peter Clausen <lars@xxxxxxxxxx>: > On 09/06/2016 12:25 PM, Enric Balletbo i Serra wrote: >> From: Bryan Freed <bfreed@xxxxxxxxxxxx> >> >> Add IIO_CHAN_INFO_CALIBSCALE to the channel to scale up or down >> the raw measurements through the IIO framework. >> >> Add IIO_CHAN_INFO_PROCESSED to provide the interface to read the >> scaled measurements through the in_illuminance_input file. > > What is the use-case for this, how is this interface supposed to be used? The idea behind this is be able to do a per-device calibration. The use case we're thinking is: 1. Read raw measurements from sensor in controlled environment (at 30, 500 and 1000 lux) 2. do some math to calculate the calibration value. 3. write the value to calibscale (in_illuminance_calibscale) 4. read the calibrated measurement (in_illuminance_input) Regards, Enric -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
