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Use write closure to clear idle flag, only read rdr on usart versions which need it

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This commit is contained in:
Tobias Naumann 2025-03-21 13:27:29 +01:00
parent 1e6192ffa5
commit ac7c44c1d1
1 changed files with 6 additions and 7 deletions
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13
embassy-stm32/src/usart/ringbuffered.rs
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@ -261,14 +261,13 @@ fn clear_idle_flag(r: Regs) -> Sr {
let sr = sr(r).read(); let sr = sr(r).read();
// This read also clears the error and idle interrupt flags on v1.
unsafe { rdr(r).read_volatile() };
#[cfg(any(usart_v3, usart_v4))] #[cfg(any(usart_v3, usart_v4))]
{ r.icr().write(|w| w.set_idle(true));
let mut clear_idle = regs::Icr(0); #[cfg(not(any(usart_v3, usart_v4)))]
clear_idle.set_idle(true); unsafe {
r.icr().write_value(clear_idle); // This read also clears the error and idle interrupt flags on v1.
} rdr(r).read_volatile()
};
r.cr1().modify(|w| w.set_idleie(true)); r.cr1().modify(|w| w.set_idleie(true));