From bf44adc4bcd4725f19ec99428acd70700b48e8cd Mon Sep 17 00:00:00 2001
From: eZio Pan <eziopan@qq.com>
Date: Tue, 27 Feb 2024 14:20:58 +0800
Subject: [PATCH] allow higher psc value for iwdg_v3
---
embassy-stm32/src/wdg/mod.rs | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/embassy-stm32/src/wdg/mod.rs b/embassy-stm32/src/wdg/mod.rs
index dc701ef64..2ff0db09e 100644
--- a/embassy-stm32/src/wdg/mod.rs
+++ b/embassy-stm32/src/wdg/mod.rs
@@ -42,9 +42,13 @@ impl<'d, T: Instance> IndependentWatchdog<'d, T> {
// Prescaler value
let psc = 2u16.pow(psc_power);
+ #[cfg(not(iwdg_v3))]
+ assert!(psc <= 256, "IWDG prescaler should be no more than 256");
+ #[cfg(iwdg_v3)] // H5, U5, WBA
+ assert!(psc <= 1024, "IWDG prescaler should be no more than 1024");
+
// Convert prescaler power to PR register value
let pr = psc_power as u8 - 2;
- assert!(pr <= 0b110);
// Reload value
let rl = reload_value(psc, timeout_us);