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interrupt on DMA1_CHANNEL4

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This commit is contained in:
Jörn-Michael Miehe 2024-03-23 23:38:30 +00:00
parent 415e6583a2
commit 20cdf7b6a6
1 changed files with 32 additions and 18 deletions
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50
bluepill-rs/src/main.rs
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@ -31,14 +31,14 @@ mod app {
struct Shared {
buffer: &'static mut [u8],
delay_us: timer::DelayUs<pac::TIM2>,
dmx: DMX<DMX_LEN>,
int_led: gpio::gpiob::PB0<gpio::Output<gpio::OpenDrain>>,
}
#[local]
struct Local {
dmx: DMX<DMX_LEN>,
led: gpio::gpioc::PC13<gpio::Output<gpio::PushPull>>,
int_pin: gpio::gpiob::PB10<gpio::Input<gpio::PullUp>>,
int_led: gpio::gpiob::PB0<gpio::Output<gpio::OpenDrain>>,
}
#[init]
@ -67,7 +67,7 @@ mod app {
let mut gpioc = cx.device.GPIOC.split();
let mut afio = cx.device.AFIO.constrain();
let dma1 = cx.device.DMA1.split();
let mut dma1 = cx.device.DMA1.split();
// setup EXTI10 for Pin B10
let mut int_pin = gpiob.pb10.into_pull_up_input(&mut gpiob.crh);
@ -76,6 +76,10 @@ mod app {
int_pin.trigger_on_edge(&mut cx.device.EXTI, gpio::Edge::Falling);
unsafe { cx.core.NVIC.set_priority(pac::Interrupt::EXTI15_10, 1) }; // EXTI10 priority
// setup DMA1_CHANNEL4 interrupt on TransferComplete
dma1.4.listen(stm32f1xx_hal::dma::Event::TransferComplete);
unsafe { cx.core.NVIC.set_priority(pac::Interrupt::DMA1_CHANNEL4, 1) };
// Serial config
let serial = serial::Serial::new(
cx.device.USART1,
@ -88,7 +92,7 @@ mod app {
&clocks,
);
foo::spawn().unwrap();
sender::spawn().unwrap();
(
Shared {
@ -96,10 +100,14 @@ mod app {
// Configure timer
delay_us: cx.device.TIM2.delay_us(&clocks),
},
Local {
dmx: DMX::new(serial, dma1.4, &clocks),
int_led: gpiob
.pb0
.into_open_drain_output_with_state(&mut gpiob.crl, gpio::PinState::Low),
},
Local {
// Configure gpio C pin 13 as a push-pull output. The `crh` register is passed to the function
// in order to configure the port. For pins 0-7, crl should be passed instead.
led: gpioc
@ -107,9 +115,6 @@ mod app {
.into_push_pull_output_with_state(&mut gpioc.crh, gpio::PinState::High),
int_pin: int_pin,
int_led: gpiob
.pb0
.into_open_drain_output_with_state(&mut gpiob.crl, gpio::PinState::Low),
},
init::Monotonics(mono),
)
@ -122,21 +127,30 @@ mod app {
}
}
#[task(local = [dmx, led], shared = [&buffer, delay_us])]
fn foo(mut cx: foo::Context) {
cx.local.dmx.send(cx.shared.buffer);
#[task(local = [led], shared = [&buffer, delay_us, dmx])]
fn sender(mut cx: sender::Context) {
cx.shared.dmx.lock(|dmx| dmx.send(cx.shared.buffer));
cx.local.led.toggle();
cx.shared.delay_us.lock(|d| d.delay(1.secs()));
// cx.local.dmx.wait();
foo::spawn().unwrap();
sender::spawn().unwrap();
}
#[task(binds = EXTI15_10, local = [int_pin, int_led], shared = [delay_us])]
fn bar(mut cx: bar::Context) {
cx.local.int_led.toggle();
cx.shared.delay_us.lock(|d| d.delay(100.millis()));
#[task(binds = DMA1_CHANNEL4, shared = [dmx, int_led])]
fn waiter(cx: waiter::Context) {
(cx.shared.dmx, cx.shared.int_led).lock(|dmx, int_led| {
dmx.wait();
int_led.toggle();
});
}
#[task(binds = EXTI15_10, local = [int_pin], shared = [delay_us, int_led])]
fn toggler(cx: toggler::Context) {
(cx.shared.delay_us, cx.shared.int_led).lock(|delay_us, int_led| {
int_led.toggle();
delay_us.delay(100.millis());
});
// clear EXTI10 pending status
cx.local.int_pin.clear_interrupt_pending_bit()