On Tue, 22 Mar 2022 11:30:12 +0100 Andrea Merello <andrea.merello@xxxxxxxxx> wrote: > [...] > > > > +IIO attributes for unavailable measurements (e.g. Euler angles when fusion > > > +mode is disabled) just read zero. > > > > Hmm. Should probably return -EBUSY as 0 could be a valid value. > > > > While it seems reasonable, that can be easily done while reading from > sysfs, but how do we handle this when reading from buffer? > Right now both sysfs and buffer read zero from unused chans, which it > is at least consistent.. Can't we refuse to start the buffer if we have a channel enabled that makes no sense in the current mode? If seems very odd to allow capture of 'nothing'. Jonathan
