>From: Nathan Hartman <hartman.nat...@gmail.com> >Sent: 16 September 2022 12:31 >To: dev@nuttx.apache.org >Subject: Re: ADC device close and IRQ > >On Fri, Sep 16, 2022 at 7:20 AM TimH <t...@jti.uk.com.invalid> wrote: > >> Actually a little more complicated as the detach and disable in adc >> close then kills the touch screen driver as well (it uses the ADC). >> l'll figure out a way, I'm sure! > > > >I haven't looked at the code, but it sounds like any driver being closed shuts >down the ADC for all drivers. > >Instead, the driver should keep a reference count. The underlying hardware >should be initialized when the first instance of the driver is opened and un- >initialized only when the last instance of the driver is closed. > >Cheers >Nathan
At present (by default/out of the box) there are two drivers - one for the TS, registered as /dev/input0, the other for the ADC, as /dev/adc0. There are, indeed, counts for each separate driver, but no "cross-coupling". Perhaps the TS driver needs to be rolled into the ADC driver for this chip?
