Add wdt and flash

1 files changed, 41 insertions, 0 deletions

diff --git a/examples/stm32u0/src/bin/wdt.rs b/examples/stm32u0/src/bin/wdt.rs
new file mode 100644
index 000000000..f6276e2e9
--- /dev/null
+++ b/examples/stm32u0/src/bin/wdt.rs
@@ -0,0 +1,41 @@
+#![no_std]
+#![no_main]
+
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_stm32::gpio::{Level, Output, Speed};
+use embassy_stm32::wdg::IndependentWatchdog;
+use embassy_time::Timer;
+use {defmt_rtt as _, panic_probe as _};
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    let p = embassy_stm32::init(Default::default());
+    info!("Hello World!");
+
+    let mut led = Output::new(p.PA5, Level::High, Speed::Low);
+
+    let mut wdt = IndependentWatchdog::new(p.IWDG, 1_000_000);
+    wdt.unleash();
+
+    let mut i = 0;
+
+    loop {
+        info!("high");
+        led.set_high();
+        Timer::after_millis(300).await;
+
+        info!("low");
+        led.set_low();
+        Timer::after_millis(300).await;
+
+        // Pet watchdog for 5 iterations and then stop.
+        // MCU should restart in 1 second after the last pet.
+        if i < 5 {
+            info!("Petting watchdog");
+            wdt.pet();
+        }
+
+        i += 1;
+    }
+}