pounder: add comment on channel enum
@@ -44,6 +44,8 @@ pub enum Error {
Adc,
}
+/// The numerical value (discriminant) of the Channel enum is the index in the attenuator shift
+/// register as well as the attenuator latch enable signal index on the GPIO extender.
#[derive(Debug, Copy, Clone)]
#[allow(dead_code)]
pub enum Channel {
