Add example for STM32WL55

embassy-stm32/src/exti/mod.rs

@@ -37,6 +37,7 @@ macro_rules! foreach_exti_irq {
 #[cfg_attr(exti_v1, path = "v1.rs")]
 #[cfg_attr(exti_h7, path = "v1.rs")]
 #[cfg_attr(exti_wb55, path = "v2.rs")]
+#[cfg_attr(exti_wl5x, path = "v2.rs")]
 mod _version;
 
 #[allow(unused)]
@@ -110,6 +111,6 @@ pub(crate) unsafe fn init() {
 
     foreach_exti_irq!(enable_irq);
 
-    #[cfg(not(rcc_wb55))]
+    #[cfg(not(any(rcc_wb55, rcc_wl5x)))]
     <crate::peripherals::SYSCFG as crate::rcc::sealed::RccPeripheral>::enable();
 }

embassy-stm32/src/rcc/wl5x/mod.rs

@@ -116,15 +116,6 @@ impl<'d> Rcc<'d> {
     pub fn clocks(&self) -> &'static Clocks {
         unsafe { get_freqs() }
     }
-
-    pub fn enable_debug_wfe(&mut self, _dbg: &mut peripherals::DBGMCU, enable_dma: bool) {
-        // NOTE(unsafe) We have exclusive access to the RCC and DBGMCU
-        unsafe {
-            pac::RCC.ahb1enr().modify(|w| w.set_dma1en(enable_dma));
-
-            Dbgmcu::enable_all();
-        }
-    }
 }
 
 /// Extension trait that freezes the `RCC` peripheral with provided clocks configuration

examples/stm32wl55/Cargo.toml

@@ -0,0 +1,34 @@
+[package]
+authors = ["Dario Nieuwenhuis <dirbaio@dirbaio.net>", "Ulf Lilleengen <ulf.lilleengen@gmail.com>"]
+edition = "2018"
+name = "embassy-stm32wl55-examples"
+version = "0.1.0"
+resolver = "2"
+
+[features]
+default = [
+    "defmt-default",
+]
+defmt-default = []
+defmt-trace = []
+defmt-debug = []
+defmt-info = []
+defmt-warn = []
+defmt-error = []
+
+[dependencies]
+embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-trace"] }
+embassy-traits = { version = "0.1.0", path = "../../embassy-traits", features = ["defmt"] }
+embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["defmt", "defmt-trace", "stm32wl55jc_cm4", "time-driver-tim2", "memory-x"]  }
+embassy-hal-common = {version = "0.1.0", path = "../../embassy-hal-common" }
+
+defmt = "0.2.0"
+defmt-rtt = "0.2.0"
+
+cortex-m = "0.7.1"
+cortex-m-rt = "0.6.14"
+embedded-hal = { version = "0.2.4" }
+panic-probe = { version = "0.2.0", features= ["print-defmt"] }
+futures = { version = "0.3.8", default-features = false, features = ["async-await"] }
+rtt-target = { version = "0.3", features = ["cortex-m"] }
+heapless = { version = "0.7.1", default-features = false }

examples/stm32wl55/memory.x

@@ -0,0 +1,5 @@
+MEMORY
+{
+  FLASH : ORIGIN = 0x08000000, LENGTH = 256K
+  RAM : ORIGIN = 0x20000000, LENGTH = 64K
+}

examples/stm32wl55/src/bin/blinky.rs

@@ -0,0 +1,34 @@
+#![no_std]
+#![no_main]
+#![feature(trait_alias)]
+#![feature(type_alias_impl_trait)]
+#![allow(incomplete_features)]
+
+#[path = "../example_common.rs"]
+mod example_common;
+use embassy::executor::Spawner;
+use embassy::time::{Duration, Timer};
+use embassy_stm32::dbgmcu::Dbgmcu;
+use embassy_stm32::gpio::{Level, Output, Speed};
+use embassy_stm32::Peripherals;
+use embedded_hal::digital::v2::OutputPin;
+use example_common::*;
+
+#[embassy::main]
+async fn main(_spawner: Spawner, p: Peripherals) {
+    info!("Hello World!");
+
+    unsafe { Dbgmcu::enable_all() };
+
+    let mut led = Output::new(p.PB15, Level::High, Speed::Low);
+
+    loop {
+        info!("high");
+        unwrap!(led.set_high());
+        Timer::after(Duration::from_millis(500)).await;
+
+        info!("low");
+        unwrap!(led.set_low());
+        Timer::after(Duration::from_millis(500)).await;
+    }
+}

examples/stm32wl55/src/bin/button.rs

@@ -0,0 +1,40 @@
+#![no_std]
+#![no_main]
+#![feature(trait_alias)]
+#![feature(type_alias_impl_trait)]
+#![allow(incomplete_features)]
+
+#[path = "../example_common.rs"]
+mod example_common;
+use embassy_stm32::{
+    dbgmcu::Dbgmcu,
+    gpio::{Input, Level, Output, Pull, Speed},
+    rcc::*,
+};
+use embedded_hal::digital::v2::{InputPin, OutputPin};
+use example_common::*;
+
+use cortex_m_rt::entry;
+
+#[entry]
+fn main() -> ! {
+    info!("Hello World!");
+
+    let mut p = embassy_stm32::init(Default::default());
+
+    unsafe { Dbgmcu::enable_all() };
+
+    let button = Input::new(p.PA0, Pull::Up);
+    let mut led1 = Output::new(p.PB15, Level::High, Speed::Low);
+    let mut led2 = Output::new(p.PB9, Level::High, Speed::Low);
+
+    loop {
+        if button.is_high().unwrap() {
+            led1.set_high().unwrap();
+            led2.set_low().unwrap();
+        } else {
+            led1.set_low().unwrap();
+            led2.set_high().unwrap();
+        }
+    }
+}

examples/stm32wl55/src/example_common.rs

@@ -0,0 +1,17 @@
+#![macro_use]
+
+use defmt_rtt as _; // global logger
+use panic_probe as _;
+
+pub use defmt::*;
+
+use core::sync::atomic::{AtomicUsize, Ordering};
+
+defmt::timestamp! {"{=u64}", {
+        static COUNT: AtomicUsize = AtomicUsize::new(0);
+        // NOTE(no-CAS) `timestamps` runs with interrupts disabled
+        let n = COUNT.load(Ordering::Relaxed);
+        COUNT.store(n + 1, Ordering::Relaxed);
+        n as u64
+    }
+}

stm32-data

@@ -1 +1 @@
-Subproject commit 75a76596c37f07cbbdaa3a689c1776297063b651
+Subproject commit bfd4797d1278c3e0b4611bc79e12346dedbde7c9