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stm32: Add support for read_until_idle on UART

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This commit is contained in:
Guillaume MICHEL
2022-10-26 18:58:22 +02:00
committed by Dario Nieuwenhuis
parent ff76fde299
commit 9cac649fcf
16 changed files with 500 additions and 68 deletions
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34
embassy-stm32/src/usart/buffered.rs
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@ -46,16 +46,44 @@ impl<'d, T: BasicInstance> Unpin for BufferedUart<'d, T> {}
impl<'d, T: BasicInstance> BufferedUart<'d, T> {
pub fn new(
state: &'d mut State<'d, T>,
_uart: Uart<'d, T, NoDma, NoDma>,
_peri: impl Peripheral<P = T> + 'd,
rx: impl Peripheral<P = impl RxPin<T>> + 'd,
tx: impl Peripheral<P = impl TxPin<T>> + 'd,
irq: impl Peripheral<P = T::Interrupt> + 'd,
tx_buffer: &'d mut [u8],
rx_buffer: &'d mut [u8],
config: Config,
) -> BufferedUart<'d, T> {
into_ref!(irq);
into_ref!(_peri, rx, tx, irq);
T::enable();
T::reset();
let r = T::regs();
configure(r, &config, T::frequency(), T::MULTIPLIER);
unsafe {
r.cr1().modify(|w| {
rx.set_as_af(rx.af_num(), AFType::Input);
tx.set_as_af(tx.af_num(), AFType::OutputPushPull);
r.cr2().write(|_w| {});
r.cr3().write(|_w| {});
r.cr1().write(|w| {
w.set_ue(true);
w.set_te(true);
w.set_re(true);
w.set_m0(if config.parity != Parity::ParityNone {
vals::M0::BIT9
} else {
vals::M0::BIT8
});
w.set_pce(config.parity != Parity::ParityNone);
w.set_ps(match config.parity {
Parity::ParityOdd => vals::Ps::ODD,
Parity::ParityEven => vals::Ps::EVEN,
_ => vals::Ps::EVEN,
});
w.set_rxneie(true);
w.set_idleie(true);
});