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stm32/rcc: convert bus prescalers to pac enums

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This commit is contained in:
xoviat
2023-09-16 17:41:11 -05:00
parent 044b837caa
commit de2773afdd
19 changed files with 174 additions and 347 deletions
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25
embassy-stm32/src/rcc/c0.rs
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@@ -58,8 +58,8 @@ impl Default for Config {
fn default() -> Config {
Config {
mux: ClockSrc::HSI(HSIPrescaler::NotDivided),
ahb_pre: AHBPrescaler::NotDivided,
apb_pre: APBPrescaler::NotDivided,
ahb_pre: AHBPrescaler::DIV1,
apb_pre: APBPrescaler::DIV1,
}
}
}
@@ -151,20 +151,21 @@ pub(crate) unsafe fn init(config: Config) {
}
let ahb_div = match config.ahb_pre {
AHBPrescaler::NotDivided => 1,
AHBPrescaler::Div2 => 2,
AHBPrescaler::Div4 => 4,
AHBPrescaler::Div8 => 8,
AHBPrescaler::Div16 => 16,
AHBPrescaler::Div64 => 64,
AHBPrescaler::Div128 => 128,
AHBPrescaler::Div256 => 256,
AHBPrescaler::Div512 => 512,
AHBPrescaler::DIV1 => 1,
AHBPrescaler::DIV2 => 2,
AHBPrescaler::DIV4 => 4,
AHBPrescaler::DIV8 => 8,
AHBPrescaler::DIV16 => 16,
AHBPrescaler::DIV64 => 64,
AHBPrescaler::DIV128 => 128,
AHBPrescaler::DIV256 => 256,
AHBPrescaler::DIV512 => 512,
_ => unreachable!(),
};
let ahb_freq = sys_clk / ahb_div;
let (apb_freq, apb_tim_freq) = match config.apb_pre {
APBPrescaler::NotDivided => (ahb_freq, ahb_freq),
APBPrescaler::DIV1 => (ahb_freq, ahb_freq),
pre => {
let pre: Ppre = pre.into();
let pre: u8 = 1 << (pre.to_bits() - 3);