From bd01e90bfa4895b45e41ad538cb24a959b0b58ab Mon Sep 17 00:00:00 2001
From: chemicstry <chemicstry@gmail.com>
Date: Sun, 10 Jul 2022 20:38:30 +0300
Subject: Implement IWDG timeout calculation

---
 examples/stm32f4/src/bin/wdt.rs | 44 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 examples/stm32f4/src/bin/wdt.rs

(limited to 'examples')

diff --git a/examples/stm32f4/src/bin/wdt.rs b/examples/stm32f4/src/bin/wdt.rs
new file mode 100644
index 000000000..41e1f4c7b
--- /dev/null
+++ b/examples/stm32f4/src/bin/wdt.rs
@@ -0,0 +1,44 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+use defmt::*;
+use embassy::executor::Spawner;
+use embassy::time::{Duration, Timer};
+use embassy_stm32::gpio::{Level, Output, Speed};
+use embassy_stm32::wdg::IndependentWatchdog;
+use embassy_stm32::Peripherals;
+use {defmt_rtt as _, panic_probe as _};
+
+#[embassy::main]
+async fn main(_spawner: Spawner, p: Peripherals) {
+    info!("Hello World!");
+
+    let mut led = Output::new(p.PB7, Level::High, Speed::Low);
+
+    let mut wdt = IndependentWatchdog::new(p.IWDG, Duration::from_secs(1));
+    unsafe {
+        wdt.unleash();
+    }
+
+    let mut i = 0;
+
+    loop {
+        info!("high");
+        led.set_high();
+        Timer::after(Duration::from_millis(300)).await;
+
+        info!("low");
+        led.set_low();
+        Timer::after(Duration::from_millis(300)).await;
+
+        if i < 5 {
+            info!("Petting watchdog");
+            unsafe {
+                wdt.pet();
+            }
+        }
+
+        i += 1;
+    }
+}
-- 
cgit 


From bd741a40191d127e804d668366e92a8fc43c5b18 Mon Sep 17 00:00:00 2001
From: chemicstry <chemicstry@gmail.com>
Date: Sun, 10 Jul 2022 21:08:30 +0300
Subject: Add comments to watchdog example

---
 examples/stm32f4/src/bin/wdt.rs | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'examples')

diff --git a/examples/stm32f4/src/bin/wdt.rs b/examples/stm32f4/src/bin/wdt.rs
index 41e1f4c7b..a23cfe9c0 100644
--- a/examples/stm32f4/src/bin/wdt.rs
+++ b/examples/stm32f4/src/bin/wdt.rs
@@ -32,6 +32,8 @@ async fn main(_spawner: Spawner, p: Peripherals) {
         led.set_low();
         Timer::after(Duration::from_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");
             unsafe {
-- 
cgit 


From d7d1e46a5fb115b0993d4ac37c0152b1dd5f78c3 Mon Sep 17 00:00:00 2001
From: chemicstry <chemicstry@gmail.com>
Date: Mon, 11 Jul 2022 00:00:33 +0300
Subject: Use u32 instead of Duration for IWDG

---
 examples/stm32f4/src/bin/wdt.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'examples')

diff --git a/examples/stm32f4/src/bin/wdt.rs b/examples/stm32f4/src/bin/wdt.rs
index a23cfe9c0..bfc487c31 100644
--- a/examples/stm32f4/src/bin/wdt.rs
+++ b/examples/stm32f4/src/bin/wdt.rs
@@ -16,7 +16,7 @@ async fn main(_spawner: Spawner, p: Peripherals) {
 
     let mut led = Output::new(p.PB7, Level::High, Speed::Low);
 
-    let mut wdt = IndependentWatchdog::new(p.IWDG, Duration::from_secs(1));
+    let mut wdt = IndependentWatchdog::new(p.IWDG, 1_000_000);
     unsafe {
         wdt.unleash();
     }
-- 
cgit