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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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31
embassy-stm32/src/rcc/h7.rs
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@ -12,10 +12,17 @@ use crate::rcc::{set_freqs, Clocks};
use crate::time::Hertz;
use crate::{peripherals, Unborrow};
const HSI: Hertz = Hertz(64_000_000);
const CSI: Hertz = Hertz(4_000_000);
const HSI48: Hertz = Hertz(48_000_000);
const LSI: Hertz = Hertz(32_000);
/// HSI speed
pub const HSI_FREQ: Hertz = Hertz(64_000_000);
/// CSI speed
pub const CSI_FREQ: Hertz = Hertz(4_000_000);
/// HSI48 speed
pub const HSI48_FREQ: Hertz = Hertz(48_000_000);
/// LSI speed
pub const LSI_FREQ: Hertz = Hertz(32_000);
/// Voltage Scale
///
@ -461,7 +468,7 @@ pub(crate) unsafe fn init(mut config: Config) {
// achieved, but the mechanism for doing so is not yet
// implemented here.
let srcclk = config.hse.unwrap_or(HSI); // Available clocks
let srcclk = config.hse.unwrap_or(HSI_FREQ); // Available clocks
let (sys_ck, sys_use_pll1_p) = sys_ck_setup(&mut config, srcclk);
// Configure traceclk from PLL if needed
@ -490,9 +497,9 @@ pub(crate) unsafe fn init(mut config: Config) {
// per_ck from HSI by default
let (per_ck, ckpersel) = match (config.per_ck == config.hse, config.per_ck) {
(true, Some(hse)) => (hse, Ckpersel::HSE), // HSE
(_, Some(CSI)) => (CSI, Ckpersel::CSI), // CSI
_ => (HSI, Ckpersel::HSI), // HSI
(true, Some(hse)) => (hse, Ckpersel::HSE), // HSE
(_, Some(HSI_FREQ)) => (CSI_FREQ, Ckpersel::CSI), // CSI
_ => (HSI_FREQ, Ckpersel::HSI), // HSI
};
// D1 Core Prescaler
@ -664,10 +671,10 @@ pub(crate) unsafe fn init(mut config: Config) {
ppre2,
ppre3,
ppre4,
csi_ck: Some(CSI),
hsi_ck: Some(HSI),
hsi48_ck: Some(HSI48),
lsi_ck: Some(LSI),
csi_ck: Some(CSI_FREQ),
hsi_ck: Some(HSI_FREQ),
hsi48_ck: Some(HSI48_FREQ),
lsi_ck: Some(LSI_FREQ),
per_ck: Some(per_ck),
hse_ck,
pll1_p_ck: pll1_p_ck.map(Hertz),