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Stm32 timer prevent hardfault

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This commit is contained in:
Dion Dokter 2023-08-30 19:35:15 +02:00
parent 5adc80f6d9
commit 36ec9bcc1d
1 changed files with 2 additions and 0 deletions
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2
embassy-stm32/src/timer/mod.rs
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@ -211,6 +211,7 @@ macro_rules! impl_basic_16bit_timer {
use core::convert::TryInto; use core::convert::TryInto;
let f = frequency.0; let f = frequency.0;
let timer_f = Self::frequency().0; let timer_f = Self::frequency().0;
assert!(f > 0);
let pclk_ticks_per_timer_period = timer_f / f; let pclk_ticks_per_timer_period = timer_f / f;
let psc: u16 = unwrap!(((pclk_ticks_per_timer_period - 1) / (1 << 16)).try_into()); let psc: u16 = unwrap!(((pclk_ticks_per_timer_period - 1) / (1 << 16)).try_into());
let arr: u16 = unwrap!((pclk_ticks_per_timer_period / (u32::from(psc) + 1)).try_into()); let arr: u16 = unwrap!((pclk_ticks_per_timer_period / (u32::from(psc) + 1)).try_into());
@ -255,6 +256,7 @@ macro_rules! impl_32bit_timer {
fn set_frequency(&mut self, frequency: Hertz) { fn set_frequency(&mut self, frequency: Hertz) {
use core::convert::TryInto; use core::convert::TryInto;
let f = frequency.0; let f = frequency.0;
assert!(f > 0);
let timer_f = Self::frequency().0; let timer_f = Self::frequency().0;
let pclk_ticks_per_timer_period = (timer_f / f) as u64; let pclk_ticks_per_timer_period = (timer_f / f) as u64;
let psc: u16 = unwrap!(((pclk_ticks_per_timer_period - 1) / (1 << 32)).try_into()); let psc: u16 = unwrap!(((pclk_ticks_per_timer_period - 1) / (1 << 32)).try_into());