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embassy-stm32: Add support for hardware flow control for BufferedUart

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This commit is contained in:
Guillaume MICHEL 2022-10-27 11:03:37 +02:00
parent 9423987ac5
commit f053bf742c
1 changed files with 45 additions and 4 deletions
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49
embassy-stm32/src/usart/buffered.rs
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@ -45,6 +45,51 @@ 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>,
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> {
T::enable();
T::reset();
Self::new_inner(state, peri, rx, tx, irq, tx_buffer, rx_buffer, config)
}
pub fn new_with_rtscts(
state: &'d mut State<'d, T>,
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,
rts: impl Peripheral<P = impl RtsPin<T>> + 'd,
cts: impl Peripheral<P = impl CtsPin<T>> + 'd,
tx_buffer: &'d mut [u8],
rx_buffer: &'d mut [u8],
config: Config,
) -> BufferedUart<'d, T> {
into_ref!(cts, rts);
T::enable();
T::reset();
unsafe {
rts.set_as_af(rts.af_num(), AFType::OutputPushPull);
cts.set_as_af(cts.af_num(), AFType::Input);
T::regs().cr3().write(|w| {
w.set_rtse(true);
w.set_ctse(true);
});
}
Self::new_inner(state, peri, rx, tx, irq, tx_buffer, rx_buffer, config)
}
fn new_inner(
state: &'d mut State<'d, T>,
_peri: impl Peripheral<P = T> + 'd,
rx: impl Peripheral<P = impl RxPin<T>> + 'd,
@ -56,9 +101,6 @@ impl<'d, T: BasicInstance> BufferedUart<'d, T> {
) -> BufferedUart<'d, T> {
into_ref!(_peri, rx, tx, irq);
T::enable();
T::reset();
let r = T::regs();
configure(r, &config, T::frequency(), T::MULTIPLIER);
@ -68,7 +110,6 @@ impl<'d, T: BasicInstance> BufferedUart<'d, T> {
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);