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STM32WBA's high speed external clock has to run at 32 MHz

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This commit is contained in:
Romain Goyet 2024-02-01 13:39:14 -05:00
parent 9769d29c22
commit aa767272a8
1 changed files with 8 additions and 6 deletions
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14
embassy-stm32/src/rcc/wba.rs
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@ -6,26 +6,28 @@ use crate::time::Hertz;
/// HSI speed
pub const HSI_FREQ: Hertz = Hertz(16_000_000);
// HSE speed
pub const HSE_FREQ: Hertz = Hertz(32_000_000);
pub use crate::pac::pwr::vals::Vos as VoltageScale;
pub use crate::pac::rcc::vals::{Hpre as AHBPrescaler, Ppre as APBPrescaler};
#[derive(Copy, Clone)]
pub enum ClockSrc {
HSE(Hertz),
HSE,
HSI,
}
#[derive(Clone, Copy, Debug)]
pub enum PllSource {
HSE(Hertz),
HSE,
HSI,
}
impl Into<Pllsrc> for PllSource {
fn into(self) -> Pllsrc {
match self {
PllSource::HSE(..) => Pllsrc::HSE,
PllSource::HSE => Pllsrc::HSE,
PllSource::HSI => Pllsrc::HSI,
}
}
@ -34,7 +36,7 @@ impl Into<Pllsrc> for PllSource {
impl Into<Sw> for ClockSrc {
fn into(self) -> Sw {
match self {
ClockSrc::HSE(..) => Sw::HSE,
ClockSrc::HSE => Sw::HSE,
ClockSrc::HSI => Sw::HSI,
}
}
@ -64,11 +66,11 @@ impl Default for Config {
pub(crate) unsafe fn init(config: Config) {
let sys_clk = match config.mux {
ClockSrc::HSE(freq) => {
ClockSrc::HSE => {
RCC.cr().write(|w| w.set_hseon(true));
while !RCC.cr().read().hserdy() {}
freq
HSE_FREQ
}
ClockSrc::HSI => {
RCC.cr().write(|w| w.set_hsion(true));