On Sat, 4 Nov 2017 21:51:34 +0100 "Enrico Weigelt, metux IT consult" <info@xxxxxxxxx> wrote: > On 04.11.2017 21:38, Jonathan Cameron wrote: > > >> How should I implement the sampling rate setting w/ separate devices ? > >> Maybe some master-slave concept where settings on the master > >> automatically affect the slaves ? > > > > Yes it will be a bit ugly. Probably do it as a set of peers where writing any will change them all. Sorry, been a busy week - now have beer and am on right side of airport security ;) > > Ok. By the way: how to set the sampling-rate via iio ? > Is there a callback or device field for that ? Yes - the raw_write callback will do it but you will also need to add the IIO_CHAN_SPEC_SAMP_FREQ bit to the appropriate infomask_shared_by* > > where should i tell the adc to start capture w/ ? > in pre- or post-enable buffer ops ? Conceptually in the post-enable. The pre / post divide is rather vague now as it the original plan to do it nice and cleanly was flawed by some race conditions. Now they both occur in a very similar state... > > > --mtx > > -- 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
