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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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10
embassy-stm32/src/rcc/f0.rs
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@ -3,7 +3,11 @@ use crate::pac::rcc::vals::{Hpre, Pllmul, Pllsrc, Ppre, Sw, Usbsw};
use crate::pac::{FLASH, RCC};
use crate::time::Hertz;
const HSI: u32 = 8_000_000;
/// HSI speed
pub const HSI_FREQ: Hertz = Hertz(8_000_000);
/// LSI speed
pub const LSI_FREQ: Hertz = Hertz(40_000);
/// Configuration of the clocks
///
@ -24,14 +28,14 @@ pub struct Config {
}
pub(crate) unsafe fn init(config: Config) {
let sysclk = config.sys_ck.map(|v| v.0).unwrap_or(HSI);
let sysclk = config.sys_ck.map(|v| v.0).unwrap_or(HSI_FREQ.0);
let (src_clk, use_hsi48) = config.hse.map(|v| (v.0, false)).unwrap_or_else(|| {
#[cfg(not(stm32f0x0))]
if config.hsi48 {
return (48_000_000, true);
}
(HSI, false)
(HSI_FREQ.0, false)
});
let (pllmul_bits, real_sysclk) = if sysclk == src_clk {