On 02/20, Bagas Sanjaya wrote: > On Wed, Feb 19, 2025 at 06:00:56PM -0300, Marcelo Schmitt wrote: > > +For a **single-ended bipolar** channel, the analog voltage input can go from > > +-VREF to +VREF (where -VREF is the voltage reference that has the lower > > +electrical potential while +VREF is the reference with the higher one). Some ADC > > +chips derive the lower reference from +VREF, others get it from a separate > "... obtain it ..." Ack. Maybe, if there are no additional suggestions to the docs, Jonathan can tweak this while applying the patch? Otherwise I'll change accordingly on v5. > > +input. Often, +VREF and -VREF are symmetric but they don't need to be so. When > > +-VREF is lower than system ground, these inputs are also called single-ended > > +true bipolar. Also, while there is a relevant difference between bipolar and > > +true bipolar from the electrical perspective, IIO makes no explicit distinction > > +between them. > > + > > <snipped>... > > +In the ADC driver, ``differential = 1`` is set into ``struct iio_chan_spec`` for > > +the channel. Even though, there are three general input types, ``differential`` > > +is only used to distinguish between differential and not differential (either > "... non-differential ..." Ack. Same as the other suggestion. > > +single-ended or pseudo-differential) input types. See > > +``include/linux/iio/iio.h`` for more information. > > Thanks. > > -- > An old man doll... just what I always wanted! - Clara Thanks, Marcelo
