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exti interrupt working

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This commit is contained in:
Jörn-Michael Miehe 2024-03-23 14:55:03 +00:00
parent 2553740729
commit d7c906684c
1 changed files with 29 additions and 7 deletions
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36
bluepill-rs/src/main.rs
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@ -1,4 +1,4 @@
#![deny(unsafe_code)] // #![deny(unsafe_code)]
#![no_std] #![no_std]
#![no_main] #![no_main]
@ -36,7 +36,7 @@ mod app {
} }
#[init] #[init]
fn init(cx: init::Context) -> (Shared, Local, init::Monotonics) { fn init(mut cx: init::Context) -> (Shared, Local, init::Monotonics) {
// Take ownership over the raw flash and rcc devices and convert them into the corresponding // Take ownership over the raw flash and rcc devices and convert them into the corresponding
// HAL structs // HAL structs
let mut flash = cx.device.FLASH.constrain(); let mut flash = cx.device.FLASH.constrain();
@ -63,10 +63,23 @@ mod app {
let mut afio = cx.device.AFIO.constrain(); let mut afio = cx.device.AFIO.constrain();
let dma1 = cx.device.DMA1.split(); let dma1 = cx.device.DMA1.split();
cx.device.EXTI.imr.write(|w| w.mr1().set_bit());
let _ = gpiob.pb10.into_pull_up_input(&mut gpiob.crh); let _ = gpiob.pb10.into_pull_up_input(&mut gpiob.crh);
// enable EXTI10 for port B
afio.exticr3
.exticr3()
.write(|w| unsafe { w.exti10().bits(0b0001) });
// mask EXTI10
cx.device.EXTI.imr.write(|w| w.mr10().set_bit());
// EXTI10 on falling edge
cx.device.EXTI.ftsr.write(|w| w.tr10().set_bit());
// set EXTI10 priority
unsafe {
// pac::NVIC::unmask(pac::Interrupt::EXTI15_10);
cx.core.NVIC.set_priority(pac::Interrupt::EXTI15_10, 1);
}
// Serial config // Serial config
let serial = serial::Serial::new( let serial = serial::Serial::new(
cx.device.USART1, cx.device.USART1,
@ -80,6 +93,7 @@ mod app {
); );
// rtic::pend(pac::Interrupt::DMA1_CHANNEL4); // ??? // rtic::pend(pac::Interrupt::DMA1_CHANNEL4); // ???
// let nvic = cx.device.NVIC_STIR;
foo::spawn().unwrap(); foo::spawn().unwrap();
( (
@ -124,9 +138,17 @@ mod app {
foo::spawn().unwrap(); foo::spawn().unwrap();
} }
#[task(binds=EXTI0, local = [int_led], shared = [delay_us])] #[task(binds=EXTI15_10, local = [int_led], shared = [delay_us])]
fn bar(mut cx: bar::Context) { fn bar(mut cx: bar::Context) {
cx.local.int_led.toggle(); let dp = unsafe { pac::Peripherals::steal() };
cx.shared.delay_us.lock(|d| d.delay(1.secs()));
// EXTI10 must be pending
if dp.EXTI.pr.read().pr10().bit() {
cx.local.int_led.toggle();
cx.shared.delay_us.lock(|d| d.delay(100.millis()));
// clear EXTI10 pending status
dp.EXTI.pr.write(|w| w.pr10().set_bit());
}
} }
} }