From bab4277a8620e9a5e2347ff919d677e9c87528c9 Mon Sep 17 00:00:00 2001
From: Lucas Granberg <lukkeg@gmail.com>
Date: Wed, 8 Feb 2023 17:57:37 +0200
Subject: [PATCH] hack for STM32WL, rcc reset in case of seed error The STM32WL
 series has a more complicated rng device that gets stuck when there is a seed
 error.

---
 embassy-stm32/src/rng.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/embassy-stm32/src/rng.rs b/embassy-stm32/src/rng.rs
index c487b759f..abc625835 100644
--- a/embassy-stm32/src/rng.rs
+++ b/embassy-stm32/src/rng.rs
@@ -32,6 +32,11 @@ impl<'d, T: Instance> Rng<'d, T> {
     }
 
     pub fn reset(&mut self) {
+        //stm32wl gets stuck if there is a seed error
+        #[cfg(stm32wl)]
+        if unsafe { T::regs().sr().read().seis()} {
+            T::reset();
+        }
         unsafe {
             T::regs().cr().modify(|reg| {
                 reg.set_rngen(true);