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Makes the uarte endtx event available

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This commit allows event_endtx to be used outside of the Uarte itself. As a consequence, PPI can be used to drive tasks given the end of transmission on the Uarte. This is particularly useful for situations like RS485 where a GPIO must be set to high when transmitting then cleared when done. A non-ppi approach can cause a delay in the clearing of this GPIO as other Embassy tasks might become scheduled.
This commit is contained in:
huntc 2022-01-10 19:14:02 +11:00
parent 82e5edb940
commit c54303be75
1 changed files with 6 additions and 0 deletions
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6
embassy-nrf/src/uarte.rs
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@ -151,6 +151,12 @@ impl<'d, T: Instance> Uarte<'d, T> {
(self.tx, self.rx) (self.tx, self.rx)
} }
/// Return the endtx event for use with PPI
pub fn event_endtx(&self) -> Event {
let r = T::regs();
Event::from_reg(&r.events_endtx)
}
fn on_interrupt(_: *mut ()) { fn on_interrupt(_: *mut ()) {
let r = T::regs(); let r = T::regs();
let s = T::state(); let s = T::state();