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embassy/embassy-stm32/src/exti.rs

800 lines
19 KiB
Rust
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use core::future::Future;
use core::mem;
use core::pin::Pin;
use cortex_m;
use crate::hal::gpio;
#[cfg(any(
feature = "stm32f401",
feature = "stm32f405",
feature = "stm32f407",
feature = "stm32f410",
feature = "stm32f411",
feature = "stm32f412",
feature = "stm32f413",
feature = "stm32f415",
feature = "stm32f417",
feature = "stm32f423",
feature = "stm32f427",
feature = "stm32f429",
feature = "stm32f437",
feature = "stm32f439",
feature = "stm32f446",
feature = "stm32f469",
feature = "stm32f479",
))]
use crate::hal::syscfg::SysCfg;
#[cfg(any(feature = "stm32l0x1", feature = "stm32l0x2", feature = "stm32l0x3",))]
use crate::hal::syscfg::SYSCFG as SysCfg;
use embassy::traits::gpio::{
WaitForAnyEdge, WaitForFallingEdge, WaitForHigh, WaitForLow, WaitForRisingEdge,
};
use embassy::util::InterruptFuture;
use embedded_hal::digital::v2 as digital;
use crate::interrupt;
pub struct ExtiPin<T: Instance> {
pin: T,
interrupt: T::Interrupt,
}
impl<T: Instance> ExtiPin<T> {
pub fn new(mut pin: T, interrupt: T::Interrupt, syscfg: &mut SysCfg) -> Self {
cortex_m::interrupt::free(|_| {
pin.make_source(syscfg);
});
Self { pin, interrupt }
}
}
impl<T: Instance + digital::OutputPin> digital::OutputPin for ExtiPin<T> {
type Error = T::Error;
fn set_low(&mut self) -> Result<(), Self::Error> {
self.pin.set_low()
}
fn set_high(&mut self) -> Result<(), Self::Error> {
self.pin.set_high()
}
}
impl<T: Instance + digital::StatefulOutputPin> digital::StatefulOutputPin for ExtiPin<T> {
fn is_set_low(&self) -> Result<bool, Self::Error> {
self.pin.is_set_low()
}
fn is_set_high(&self) -> Result<bool, Self::Error> {
self.pin.is_set_high()
}
}
impl<T: Instance + digital::ToggleableOutputPin> digital::ToggleableOutputPin for ExtiPin<T> {
type Error = T::Error;
fn toggle(&mut self) -> Result<(), Self::Error> {
self.pin.toggle()
}
}
impl<T: Instance + digital::InputPin> digital::InputPin for ExtiPin<T> {
type Error = T::Error;
fn is_high(&self) -> Result<bool, Self::Error> {
self.pin.is_high()
}
fn is_low(&self) -> Result<bool, Self::Error> {
self.pin.is_low()
}
}
impl<T: Instance + digital::InputPin + 'static> ExtiPin<T> {
fn wait_for_state<'a>(self: Pin<&'a mut Self>, state: bool) -> impl Future<Output = ()> + 'a {
let s = unsafe { self.get_unchecked_mut() };
s.pin.clear_pending_bit();
async move {
let fut = InterruptFuture::new(&mut s.interrupt);
let pin = &mut s.pin;
cortex_m::interrupt::free(|_| {
pin.trigger_edge(if state {
EdgeOption::Rising
} else {
EdgeOption::Falling
});
});
if (state && s.pin.is_high().unwrap_or(false))
|| (!state && s.pin.is_low().unwrap_or(false))
{
return;
}
fut.await;
s.pin.clear_pending_bit();
}
}
}
impl<T: Instance + 'static> ExtiPin<T> {
fn wait_for_edge<'a>(
self: Pin<&'a mut Self>,
state: EdgeOption,
) -> impl Future<Output = ()> + 'a {
let s = unsafe { self.get_unchecked_mut() };
s.pin.clear_pending_bit();
async move {
let fut = InterruptFuture::new(&mut s.interrupt);
let pin = &mut s.pin;
cortex_m::interrupt::free(|_| {
pin.trigger_edge(state);
});
fut.await;
s.pin.clear_pending_bit();
}
}
}
impl<T: Instance + digital::InputPin + 'static> WaitForHigh for ExtiPin<T> {
type Future<'a> = impl Future<Output = ()> + 'a;
fn wait_for_high<'a>(self: Pin<&'a mut Self>) -> Self::Future<'a> {
self.wait_for_state(true)
}
}
impl<T: Instance + digital::InputPin + 'static> WaitForLow for ExtiPin<T> {
type Future<'a> = impl Future<Output = ()> + 'a;
fn wait_for_low<'a>(self: Pin<&'a mut Self>) -> Self::Future<'a> {
self.wait_for_state(false)
}
}
/*
Irq Handler Description
EXTI0_IRQn EXTI0_IRQHandler Handler for pins connected to line 0
EXTI1_IRQn EXTI1_IRQHandler Handler for pins connected to line 1
EXTI2_IRQn EXTI2_IRQHandler Handler for pins connected to line 2
EXTI3_IRQn EXTI3_IRQHandler Handler for pins connected to line 3
EXTI4_IRQn EXTI4_IRQHandler Handler for pins connected to line 4
EXTI9_5_IRQn EXTI9_5_IRQHandler Handler for pins connected to line 5 to 9
EXTI15_10_IRQn EXTI15_10_IRQHandler Handler for pins connected to line 10 to 15
*/
impl<T: Instance + 'static> WaitForRisingEdge for ExtiPin<T> {
type Future<'a> = impl Future<Output = ()> + 'a;
fn wait_for_rising_edge<'a>(self: Pin<&'a mut Self>) -> Self::Future<'a> {
self.wait_for_edge(EdgeOption::Rising)
}
}
impl<T: Instance + 'static> WaitForFallingEdge for ExtiPin<T> {
type Future<'a> = impl Future<Output = ()> + 'a;
fn wait_for_falling_edge<'a>(self: Pin<&'a mut Self>) -> Self::Future<'a> {
self.wait_for_edge(EdgeOption::Falling)
}
}
impl<T: Instance + 'static> WaitForAnyEdge for ExtiPin<T> {
type Future<'a> = impl Future<Output = ()> + 'a;
fn wait_for_any_edge<'a>(self: Pin<&'a mut Self>) -> Self::Future<'a> {
self.wait_for_edge(EdgeOption::RisingFalling)
}
}
mod private {
pub trait Sealed {}
}
#[derive(Copy, Clone)]
pub enum EdgeOption {
Rising,
Falling,
RisingFalling,
}
pub trait WithInterrupt: private::Sealed {
type Interrupt: interrupt::Interrupt;
}
pub trait Instance: WithInterrupt {
fn make_source(&mut self, syscfg: &mut SysCfg);
fn clear_pending_bit(&mut self);
fn trigger_edge(&mut self, edge: EdgeOption);
}
macro_rules! exti {
($set:ident, [
$($INT:ident => $pin:ident,)+
]) => {
$(
impl<T> private::Sealed for gpio::$set::$pin<T> {}
impl<T> WithInterrupt for gpio::$set::$pin<T> {
type Interrupt = interrupt::$INT;
}
#[cfg(any(
feature = "stm32f401",
feature = "stm32f405",
feature = "stm32f407",
feature = "stm32f410",
feature = "stm32f411",
feature = "stm32f412",
feature = "stm32f413",
feature = "stm32f415",
feature = "stm32f417",
feature = "stm32f423",
feature = "stm32f427",
feature = "stm32f429",
feature = "stm32f437",
feature = "stm32f439",
feature = "stm32f446",
feature = "stm32f469",
feature = "stm32f479",
))]
impl<T> Instance for gpio::$set::$pin<gpio::Input<T>> {
fn make_source(&mut self, syscfg: &mut SysCfg) {
use crate::hal::gpio::ExtiPin;
self.make_interrupt_source(syscfg);
}
fn clear_pending_bit(&mut self) {
use crate::hal::{gpio::Edge, gpio::ExtiPin, syscfg::SysCfg};
self.clear_interrupt_pending_bit();
}
fn trigger_edge(&mut self, edge: EdgeOption) {
use crate::hal::{gpio::Edge, gpio::ExtiPin, syscfg::SysCfg};
use crate::pac::EXTI;
let mut exti: EXTI = unsafe { mem::transmute(()) };
let edge = match edge {
EdgeOption::Falling => Edge::FALLING,
EdgeOption::Rising => Edge::RISING,
EdgeOption::RisingFalling => Edge::RISING_FALLING,
};
self.trigger_on_edge(&mut exti, edge);
self.enable_interrupt(&mut exti);
}
}
#[cfg(any(feature = "stm32l0x1", feature = "stm32l0x2", feature = "stm32l0x3",))]
impl<T> Instance for gpio::$set::$pin<T> {
fn make_source(&mut self, syscfg: &mut SysCfg) {}
fn clear_pending_bit(&mut self) {
use crate::hal::{
exti::{Exti, ExtiLine, GpioLine, TriggerEdge},
syscfg::SYSCFG,
};
Exti::unpend(GpioLine::from_raw_line(self.pin_number()).unwrap());
}
fn trigger_edge(&mut self, edge: EdgeOption) {
use crate::hal::{
exti::{Exti, ExtiLine, GpioLine, TriggerEdge},
syscfg::SYSCFG,
};
use crate::pac::EXTI;
let edge = match edge {
EdgeOption::Falling => TriggerEdge::Falling,
EdgeOption::Rising => TriggerEdge::Rising,
EdgeOption::RisingFalling => TriggerEdge::Both,
};
let exti: EXTI = unsafe { mem::transmute(()) };
let mut exti = Exti::new(exti);
let port = self.port();
let mut syscfg: SYSCFG = unsafe { mem::transmute(()) };
let line = GpioLine::from_raw_line(self.pin_number()).unwrap();
exti.listen_gpio(&mut syscfg, port, line, edge);
}
}
)+
};
}
#[cfg(any(
feature = "stm32f401",
feature = "stm32f405",
feature = "stm32f407",
feature = "stm32f410",
feature = "stm32f411",
feature = "stm32f412",
feature = "stm32f413",
feature = "stm32f415",
feature = "stm32f417",
feature = "stm32f423",
feature = "stm32f427",
feature = "stm32f429",
feature = "stm32f437",
feature = "stm32f439",
feature = "stm32f446",
feature = "stm32f469",
feature = "stm32f479"
))]
exti!(gpioa, [
EXTI0 => PA0,
EXTI1 => PA1,
EXTI2 => PA2,
EXTI3 => PA3,
EXTI4 => PA4,
EXTI9_5 => PA5,
EXTI9_5 => PA6,
EXTI9_5 => PA7,
EXTI9_5 => PA8,
EXTI9_5 => PA9,
EXTI15_10 => PA10,
EXTI15_10 => PA11,
EXTI15_10 => PA12,
EXTI15_10 => PA13,
EXTI15_10 => PA14,
EXTI15_10 => PA15,
]);
#[cfg(any(
feature = "stm32f401",
feature = "stm32f405",
feature = "stm32f407",
feature = "stm32f410",
feature = "stm32f411",
feature = "stm32f412",
feature = "stm32f413",
feature = "stm32f415",
feature = "stm32f417",
feature = "stm32f423",
feature = "stm32f427",
feature = "stm32f429",
feature = "stm32f437",
feature = "stm32f439",
feature = "stm32f446",
feature = "stm32f469",
feature = "stm32f479"
))]
exti!(gpiob, [
EXTI0 => PB0,
EXTI1 => PB1,
EXTI2 => PB2,
EXTI3 => PB3,
EXTI4 => PB4,
EXTI9_5 => PB5,
EXTI9_5 => PB6,
EXTI9_5 => PB7,
EXTI9_5 => PB8,
EXTI9_5 => PB9,
EXTI15_10 => PB10,
EXTI15_10 => PB11,
EXTI15_10 => PB12,
EXTI15_10 => PB13,
EXTI15_10 => PB14,
EXTI15_10 => PB15,
]);
#[cfg(any(
feature = "stm32f401",
feature = "stm32f405",
feature = "stm32f407",
feature = "stm32f410",
feature = "stm32f411",
feature = "stm32f412",
feature = "stm32f413",
feature = "stm32f415",
feature = "stm32f417",
feature = "stm32f423",
feature = "stm32f427",
feature = "stm32f429",
feature = "stm32f437",
feature = "stm32f439",
feature = "stm32f446",
feature = "stm32f469",
feature = "stm32f479"
))]
exti!(gpioc, [
EXTI0 => PC0,
EXTI1 => PC1,
EXTI2 => PC2,
EXTI3 => PC3,
EXTI4 => PC4,
EXTI9_5 => PC5,
EXTI9_5 => PC6,
EXTI9_5 => PC7,
EXTI9_5 => PC8,
EXTI9_5 => PC9,
EXTI15_10 => PC10,
EXTI15_10 => PC11,
EXTI15_10 => PC12,
EXTI15_10 => PC13,
EXTI15_10 => PC14,
EXTI15_10 => PC15,
]);
#[cfg(any(
feature = "stm32f401",
feature = "stm32f405",
feature = "stm32f407",
feature = "stm32f411",
feature = "stm32f412",
feature = "stm32f413",
feature = "stm32f415",
feature = "stm32f417",
feature = "stm32f423",
feature = "stm32f427",
feature = "stm32f429",
feature = "stm32f437",
feature = "stm32f439",
feature = "stm32f446",
feature = "stm32f469",
feature = "stm32f479"
))]
exti!(gpiod, [
EXTI0 => PD0,
EXTI1 => PD1,
EXTI2 => PD2,
EXTI3 => PD3,
EXTI4 => PD4,
EXTI9_5 => PD5,
EXTI9_5 => PD6,
EXTI9_5 => PD7,
EXTI9_5 => PD8,
EXTI9_5 => PD9,
EXTI15_10 => PD10,
EXTI15_10 => PD11,
EXTI15_10 => PD12,
EXTI15_10 => PD13,
EXTI15_10 => PD14,
EXTI15_10 => PD15,
]);
#[cfg(any(
feature = "stm32f401",
feature = "stm32f405",
feature = "stm32f407",
feature = "stm32f411",
feature = "stm32f412",
feature = "stm32f413",
feature = "stm32f415",
feature = "stm32f417",
feature = "stm32f423",
feature = "stm32f427",
feature = "stm32f429",
feature = "stm32f437",
feature = "stm32f439",
feature = "stm32f446",
feature = "stm32f469",
feature = "stm32f479"
))]
exti!(gpioe, [
EXTI0 => PE0,
EXTI1 => PE1,
EXTI2 => PE2,
EXTI3 => PE3,
EXTI4 => PE4,
EXTI9_5 => PE5,
EXTI9_5 => PE6,
EXTI9_5 => PE7,
EXTI9_5 => PE8,
EXTI9_5 => PE9,
EXTI15_10 => PE10,
EXTI15_10 => PE11,
EXTI15_10 => PE12,
EXTI15_10 => PE13,
EXTI15_10 => PE14,
EXTI15_10 => PE15,
]);
#[cfg(any(
feature = "stm32f405",
feature = "stm32f407",
feature = "stm32f412",
feature = "stm32f413",
feature = "stm32f415",
feature = "stm32f417",
feature = "stm32f423",
feature = "stm32f427",
feature = "stm32f429",
feature = "stm32f437",
feature = "stm32f439",
feature = "stm32f446",
feature = "stm32f469",
feature = "stm32f479"
))]
exti!(gpiof, [
EXTI0 => PF0,
EXTI1 => PF1,
EXTI2 => PF2,
EXTI3 => PF3,
EXTI4 => PF4,
EXTI9_5 => PF5,
EXTI9_5 => PF6,
EXTI9_5 => PF7,
EXTI9_5 => PF8,
EXTI9_5 => PF9,
EXTI15_10 => PF10,
EXTI15_10 => PF11,
EXTI15_10 => PF12,
EXTI15_10 => PF13,
EXTI15_10 => PF14,
EXTI15_10 => PF15,
]);
#[cfg(any(
feature = "stm32f405",
feature = "stm32f407",
feature = "stm32f412",
feature = "stm32f413",
feature = "stm32f415",
feature = "stm32f417",
feature = "stm32f423",
feature = "stm32f427",
feature = "stm32f429",
feature = "stm32f437",
feature = "stm32f439",
feature = "stm32f446",
feature = "stm32f469",
feature = "stm32f479"
))]
exti!(gpiog, [
EXTI0 => PG0,
EXTI1 => PG1,
EXTI2 => PG2,
EXTI3 => PG3,
EXTI4 => PG4,
EXTI9_5 => PG5,
EXTI9_5 => PG6,
EXTI9_5 => PG7,
EXTI9_5 => PG8,
EXTI9_5 => PG9,
EXTI15_10 => PG10,
EXTI15_10 => PG11,
EXTI15_10 => PG12,
EXTI15_10 => PG13,
EXTI15_10 => PG14,
EXTI15_10 => PG15,
]);
#[cfg(any(
feature = "stm32f405",
feature = "stm32f407",
feature = "stm32f410",
feature = "stm32f411",
feature = "stm32f412",
feature = "stm32f413",
feature = "stm32f415",
feature = "stm32f417",
feature = "stm32f423",
feature = "stm32f427",
feature = "stm32f429",
feature = "stm32f437",
feature = "stm32f439",
feature = "stm32f446",
feature = "stm32f469",
feature = "stm32f479"
))]
exti!(gpioh, [
EXTI0 => PH0,
EXTI1 => PH1,
EXTI2 => PH2,
EXTI3 => PH3,
EXTI4 => PH4,
EXTI9_5 => PH5,
EXTI9_5 => PH6,
EXTI9_5 => PH7,
EXTI9_5 => PH8,
EXTI9_5 => PH9,
EXTI15_10 => PH10,
EXTI15_10 => PH11,
EXTI15_10 => PH12,
EXTI15_10 => PH13,
EXTI15_10 => PH14,
EXTI15_10 => PH15,
]);
#[cfg(any(feature = "stm32f401"))]
exti!(gpioh, [
EXTI0 => PH0,
EXTI1 => PH1,
]);
#[cfg(any(
feature = "stm32f405",
feature = "stm32f407",
feature = "stm32f415",
feature = "stm32f417",
feature = "stm32f427",
feature = "stm32f429",
feature = "stm32f437",
feature = "stm32f439",
feature = "stm32f469",
feature = "stm32f479"
))]
exti!(gpioi, [
EXTI0 => PI0,
EXTI1 => PI1,
EXTI2 => PI2,
EXTI3 => PI3,
EXTI4 => PI4,
EXTI9_5 => PI5,
EXTI9_5 => PI6,
EXTI9_5 => PI7,
EXTI9_5 => PI8,
EXTI9_5 => PI9,
EXTI15_10 => PI10,
EXTI15_10 => PI11,
EXTI15_10 => PI12,
EXTI15_10 => PI13,
EXTI15_10 => PI14,
EXTI15_10 => PI15,
]);
#[cfg(any(
feature = "stm32f427",
feature = "stm32f429",
feature = "stm32f437",
feature = "stm32f439",
feature = "stm32f469",
feature = "stm32f479"
))]
exti!(gpioj, [
EXTI0 => PJ0,
EXTI1 => PJ1,
EXTI2 => PJ2,
EXTI3 => PJ3,
EXTI4 => PJ4,
EXTI9_5 => PJ5,
EXTI9_5 => PJ6,
EXTI9_5 => PJ7,
EXTI9_5 => PJ8,
EXTI9_5 => PJ9,
EXTI15_10 => PJ10,
EXTI15_10 => PJ11,
EXTI15_10 => PJ12,
EXTI15_10 => PJ13,
EXTI15_10 => PJ14,
EXTI15_10 => PJ15,
]);
#[cfg(any(
feature = "stm32f427",
feature = "stm32f429",
feature = "stm32f437",
feature = "stm32f439",
feature = "stm32f469",
feature = "stm32f479"
))]
exti!(gpiok, [
EXTI0 => PK0,
EXTI1 => PK1,
EXTI2 => PK2,
EXTI3 => PK3,
EXTI4 => PK4,
EXTI9_5 => PK5,
EXTI9_5 => PK6,
EXTI9_5 => PK7,
]);
#[cfg(any(feature = "stm32l0x1", feature = "stm32l0x2", feature = "stm32l0x3",))]
exti!(gpioa, [
EXTI0_1 => PA0,
EXTI0_1 => PA1,
EXTI2_3 => PA2,
EXTI2_3 => PA3,
EXTI4_15 => PA4,
EXTI4_15 => PA5,
EXTI4_15 => PA6,
EXTI4_15 => PA7,
EXTI4_15 => PA8,
EXTI4_15 => PA9,
EXTI4_15 => PA10,
EXTI4_15 => PA11,
EXTI4_15 => PA12,
EXTI4_15 => PA13,
EXTI4_15 => PA14,
EXTI4_15 => PA15,
]);
#[cfg(any(feature = "stm32l0x1", feature = "stm32l0x2", feature = "stm32l0x3",))]
exti!(gpiob, [
EXTI0_1 => PB0,
EXTI0_1 => PB1,
EXTI2_3 => PB2,
EXTI2_3 => PB3,
EXTI4_15 => PB4,
EXTI4_15 => PB5,
EXTI4_15 => PB6,
EXTI4_15 => PB7,
EXTI4_15 => PB8,
EXTI4_15 => PB9,
EXTI4_15 => PB10,
EXTI4_15 => PB11,
EXTI4_15 => PB12,
EXTI4_15 => PB13,
EXTI4_15 => PB14,
EXTI4_15 => PB15,
]);
#[cfg(any(feature = "stm32l0x1", feature = "stm32l0x2", feature = "stm32l0x3",))]
exti!(gpioc, [
EXTI0_1 => PC0,
EXTI0_1 => PC1,
EXTI2_3 => PC2,
EXTI2_3 => PC3,
EXTI4_15 => PC4,
EXTI4_15 => PC5,
EXTI4_15 => PC6,
EXTI4_15 => PC7,
EXTI4_15 => PC8,
EXTI4_15 => PC9,
EXTI4_15 => PC10,
EXTI4_15 => PC11,
EXTI4_15 => PC12,
EXTI4_15 => PC13,
EXTI4_15 => PC14,
EXTI4_15 => PC15,
]);
#[cfg(any(feature = "stm32l0x1", feature = "stm32l0x2", feature = "stm32l0x3",))]
exti!(gpiod, [
EXTI0_1 => PD0,
EXTI0_1 => PD1,
EXTI2_3 => PD2,
EXTI2_3 => PD3,
EXTI4_15 => PD4,
EXTI4_15 => PD5,
EXTI4_15 => PD6,
EXTI4_15 => PD7,
EXTI4_15 => PD8,
EXTI4_15 => PD9,
EXTI4_15 => PD10,
EXTI4_15 => PD11,
EXTI4_15 => PD12,
EXTI4_15 => PD13,
EXTI4_15 => PD14,
EXTI4_15 => PD15,
]);
#[cfg(any(feature = "stm32l0x1", feature = "stm32l0x2", feature = "stm32l0x3",))]
exti!(gpioe, [
EXTI0_1 => PE0,
EXTI0_1 => PE1,
EXTI2_3 => PE2,
EXTI2_3 => PE3,
EXTI4_15 => PE4,
EXTI4_15 => PE5,
EXTI4_15 => PE6,
EXTI4_15 => PE7,
EXTI4_15 => PE8,
EXTI4_15 => PE9,
EXTI4_15 => PE10,
EXTI4_15 => PE11,
EXTI4_15 => PE12,
EXTI4_15 => PE13,
EXTI4_15 => PE14,
EXTI4_15 => PE15,
]);
#[cfg(any(feature = "stm32l0x1", feature = "stm32l0x2", feature = "stm32l0x3",))]
exti!(gpioh, [
EXTI0_1 => PH0,
EXTI0_1 => PH1,
EXTI4_15 => PH9,
EXTI4_15 => PH10,
]);
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