> >> + case IIO_CHAN_INFO_SCALE: > >> + /* Returns raw lux value */ > >> + *val = 1; > > > > not needed to scale by 1.0 > > > >> + *val2 = 0; > >> + return IIO_VAL_INT; > > How do you mean? > If I don't implement this (just let this function return negative) > this happens: > > iio:device1 ls > dev of_node > in_illuminance_integration_time power > in_illuminance_raw subsystem > in_illuminance_scale uevent > > iio:device1 cat in_illuminance_scale > cat: read error: Invalid argument > > Do you mean all userspace programs should assume scale by 1x > if they get an error when they try to read the scale file, or is there > a bug in IIO such that this file should return "1" if the callback asking for > IIO_CHAN_INFO_SCALE returns negative? IIO_CHAN_INFO_SCALE is optional, if it is not given 1.0 is to be assumed you do not give _OFFSET as well and assume that offset is 0.0 when interpreting _RAW p. -- Peter Meerwald-Stadler +43-664-2444418 (mobile) -- 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
