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Refactor IWDG to use LSI frequency from RCC

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This commit is contained in:
chemicstry
2022-07-10 20:59:36 +03:00
parent bd01e90bfa
commit 1fd5022e72
17 changed files with 117 additions and 73 deletions
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8
embassy-stm32/src/rcc/f4.rs
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@ -4,7 +4,11 @@ use crate::pac::{FLASH, PWR, RCC};
use crate::rcc::{set_freqs, Clocks};
use crate::time::Hertz;
const HSI: u32 = 16_000_000;
/// HSI speed
pub const HSI_FREQ: Hertz = Hertz(16_000_000);
/// LSI speed
pub const LSI_FREQ: Hertz = Hertz(32_000);
/// Clocks configuration
#[non_exhaustive]
@ -108,7 +112,7 @@ unsafe fn flash_setup(sysclk: u32) {
pub(crate) unsafe fn init(config: Config) {
crate::peripherals::PWR::enable();
let pllsrcclk = config.hse.map(|hse| hse.0).unwrap_or(HSI);
let pllsrcclk = config.hse.map(|hse| hse.0).unwrap_or(HSI_FREQ.0);
let sysclk = config.sys_ck.map(|sys| sys.0).unwrap_or(pllsrcclk);
let sysclk_on_pll = sysclk != pllsrcclk;