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stm32/rcc: misc cleanups.

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This commit is contained in:
Dario Nieuwenhuis 2023-10-23 01:48:09 +02:00
parent 0ef1cb29f7
commit a39ae12edc
21 changed files with 175 additions and 238 deletions
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13
embassy-stm32/src/rcc/f4f7.rs
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@ -166,8 +166,8 @@ pub(crate) unsafe fn init(config: Config) {
}; };
let hclk = sys / config.ahb_pre; let hclk = sys / config.ahb_pre;
let (pclk1, pclk1_tim) = calc_pclk(hclk, config.apb1_pre); let (pclk1, pclk1_tim) = super::util::calc_pclk(hclk, config.apb1_pre);
let (pclk2, pclk2_tim) = calc_pclk(hclk, config.apb2_pre); let (pclk2, pclk2_tim) = super::util::calc_pclk(hclk, config.apb2_pre);
assert!(max::SYSCLK.contains(&sys)); assert!(max::SYSCLK.contains(&sys));
assert!(max::HCLK.contains(&hclk)); assert!(max::HCLK.contains(&hclk));
@ -326,15 +326,6 @@ fn flash_setup(clk: Hertz) {
while FLASH.acr().read().latency() != latency {} while FLASH.acr().read().latency() != latency {}
} }
fn calc_pclk<D>(hclk: Hertz, ppre: D) -> (Hertz, Hertz)
where
Hertz: core::ops::Div<D, Output = Hertz>,
{
let pclk = hclk / ppre;
let pclk_tim = if hclk == pclk { pclk } else { pclk * 2u32 };
(pclk, pclk_tim)
}
#[cfg(stm32f7)] #[cfg(stm32f7)]
mod max { mod max {
use core::ops::RangeInclusive; use core::ops::RangeInclusive;

110
embassy-stm32/src/rcc/h.rs
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@ -6,8 +6,11 @@ use crate::pac::pwr::vals::Vos;
pub use crate::pac::rcc::vals::Adcdacsel as AdcClockSource; pub use crate::pac::rcc::vals::Adcdacsel as AdcClockSource;
#[cfg(stm32h7)] #[cfg(stm32h7)]
pub use crate::pac::rcc::vals::Adcsel as AdcClockSource; pub use crate::pac::rcc::vals::Adcsel as AdcClockSource;
use crate::pac::rcc::vals::{Ckpersel, Hsidiv, Pllrge, Pllsrc, Pllvcosel, Sw, Timpre}; pub use crate::pac::rcc::vals::{
pub use crate::pac::rcc::vals::{Ckpersel as PerClockSource, Plldiv as PllDiv, Pllm as PllPreDiv, Plln as PllMul}; Ckpersel as PerClockSource, Hsidiv as HSIPrescaler, Plldiv as PllDiv, Pllm as PllPreDiv, Plln as PllMul,
Pllsrc as PllSource, Sw as Sysclk,
};
use crate::pac::rcc::vals::{Ckpersel, Pllrge, Pllvcosel, Timpre};
use crate::pac::{FLASH, PWR, RCC}; use crate::pac::{FLASH, PWR, RCC};
use crate::rcc::{set_freqs, Clocks}; use crate::rcc::{set_freqs, Clocks};
use crate::time::Hertz; use crate::time::Hertz;
@ -58,41 +61,9 @@ pub struct Hse {
pub mode: HseMode, pub mode: HseMode,
} }
#[derive(Clone, Copy, Eq, PartialEq)]
pub enum Hsi {
/// 64Mhz
Mhz64,
/// 32Mhz (divided by 2)
Mhz32,
/// 16Mhz (divided by 4)
Mhz16,
/// 8Mhz (divided by 8)
Mhz8,
}
#[derive(Clone, Copy, Eq, PartialEq)]
pub enum Sysclk {
/// HSI selected as sysclk
HSI,
/// HSE selected as sysclk
HSE,
/// CSI selected as sysclk
CSI,
/// PLL1_P selected as sysclk
Pll1P,
}
#[derive(Clone, Copy, Eq, PartialEq)]
pub enum PllSource {
Hsi,
Csi,
Hse,
}
#[derive(Clone, Copy)] #[derive(Clone, Copy)]
pub struct Pll { pub struct Pll {
/// Source clock selection. /// Source clock selection.
#[cfg(stm32h5)]
pub source: PllSource, pub source: PllSource,
/// PLL pre-divider (DIVM). /// PLL pre-divider (DIVM).
@ -152,15 +123,12 @@ impl From<TimerPrescaler> for Timpre {
/// Configuration of the core clocks /// Configuration of the core clocks
#[non_exhaustive] #[non_exhaustive]
pub struct Config { pub struct Config {
pub hsi: Option<Hsi>, pub hsi: Option<HSIPrescaler>,
pub hse: Option<Hse>, pub hse: Option<Hse>,
pub csi: bool, pub csi: bool,
pub hsi48: bool, pub hsi48: bool,
pub sys: Sysclk, pub sys: Sysclk,
#[cfg(stm32h7)]
pub pll_src: PllSource,
pub pll1: Option<Pll>, pub pll1: Option<Pll>,
pub pll2: Option<Pll>, pub pll2: Option<Pll>,
#[cfg(any(rcc_h5, stm32h7))] #[cfg(any(rcc_h5, stm32h7))]
@ -184,13 +152,11 @@ pub struct Config {
impl Default for Config { impl Default for Config {
fn default() -> Self { fn default() -> Self {
Self { Self {
hsi: Some(Hsi::Mhz64), hsi: Some(HSIPrescaler::DIV1),
hse: None, hse: None,
csi: false, csi: false,
hsi48: false, hsi48: false,
sys: Sysclk::HSI, sys: Sysclk::HSI,
#[cfg(stm32h7)]
pll_src: PllSource::Hsi,
pll1: None, pll1: None,
pll2: None, pll2: None,
#[cfg(any(rcc_h5, stm32h7))] #[cfg(any(rcc_h5, stm32h7))]
@ -303,19 +269,13 @@ pub(crate) unsafe fn init(config: Config) {
RCC.cr().modify(|w| w.set_hsion(false)); RCC.cr().modify(|w| w.set_hsion(false));
None None
} }
Some(hsi) => { Some(hsidiv) => {
let (freq, hsidiv) = match hsi {
Hsi::Mhz64 => (HSI_FREQ / 1u32, Hsidiv::DIV1),
Hsi::Mhz32 => (HSI_FREQ / 2u32, Hsidiv::DIV2),
Hsi::Mhz16 => (HSI_FREQ / 4u32, Hsidiv::DIV4),
Hsi::Mhz8 => (HSI_FREQ / 8u32, Hsidiv::DIV8),
};
RCC.cr().modify(|w| { RCC.cr().modify(|w| {
w.set_hsidiv(hsidiv); w.set_hsidiv(hsidiv);
w.set_hsion(true); w.set_hsion(true);
}); });
while !RCC.cr().read().hsirdy() {} while !RCC.cr().read().hsirdy() {}
Some(freq) Some(HSI_FREQ / hsidiv)
} }
}; };
@ -360,25 +320,29 @@ pub(crate) unsafe fn init(config: Config) {
} }
}; };
// H7 has shared PLLSRC, check it's equal in all PLLs.
#[cfg(stm32h7)]
{
let plls = [&config.pll1, &config.pll2, &config.pll3];
if !super::util::all_equal(plls.into_iter().flatten().map(|p| p.source)) {
panic!("Source must be equal across all enabled PLLs.")
};
}
// Configure PLLs. // Configure PLLs.
let pll_input = PllInput { let pll_input = PllInput { csi, hse, hsi };
csi,
hse,
hsi,
#[cfg(stm32h7)]
source: config.pll_src,
};
let pll1 = init_pll(0, config.pll1, &pll_input); let pll1 = init_pll(0, config.pll1, &pll_input);
let pll2 = init_pll(1, config.pll2, &pll_input); let pll2 = init_pll(1, config.pll2, &pll_input);
#[cfg(any(rcc_h5, stm32h7))] #[cfg(any(rcc_h5, stm32h7))]
let pll3 = init_pll(2, config.pll3, &pll_input); let pll3 = init_pll(2, config.pll3, &pll_input);
// Configure sysclk // Configure sysclk
let (sys, sw) = match config.sys { let sys = match config.sys {
Sysclk::HSI => (unwrap!(hsi), Sw::HSI), Sysclk::HSI => unwrap!(hsi),
Sysclk::HSE => (unwrap!(hse), Sw::HSE), Sysclk::HSE => unwrap!(hse),
Sysclk::CSI => (unwrap!(csi), Sw::CSI), Sysclk::CSI => unwrap!(csi),
Sysclk::Pll1P => (unwrap!(pll1.p), Sw::PLL1_P), Sysclk::PLL1_P => unwrap!(pll1.p),
_ => unreachable!(),
}; };
// Check limits. // Check limits.
@ -502,8 +466,8 @@ pub(crate) unsafe fn init(config: Config) {
RCC.cfgr().modify(|w| w.set_timpre(config.timer_prescaler.into())); RCC.cfgr().modify(|w| w.set_timpre(config.timer_prescaler.into()));
RCC.cfgr().modify(|w| w.set_sw(sw)); RCC.cfgr().modify(|w| w.set_sw(config.sys));
while RCC.cfgr().read().sws() != sw {} while RCC.cfgr().read().sws() != config.sys {}
// IO compensation cell - Requires CSI clock and SYSCFG // IO compensation cell - Requires CSI clock and SYSCFG
#[cfg(stm32h7)] // TODO h5 #[cfg(stm32h7)] // TODO h5
@ -588,8 +552,6 @@ struct PllInput {
hsi: Option<Hertz>, hsi: Option<Hertz>,
hse: Option<Hertz>, hse: Option<Hertz>,
csi: Option<Hertz>, csi: Option<Hertz>,
#[cfg(stm32h7)]
source: PllSource,
} }
struct PllOutput { struct PllOutput {
@ -619,15 +581,11 @@ fn init_pll(num: usize, config: Option<Pll>, input: &PllInput) -> PllOutput {
}; };
}; };
#[cfg(stm32h5)] let in_clk = match config.source {
let source = config.source; PllSource::DISABLE => panic!("must not set PllSource::Disable"),
#[cfg(stm32h7)] PllSource::HSI => unwrap!(input.hsi),
let source = input.source; PllSource::HSE => unwrap!(input.hse),
PllSource::CSI => unwrap!(input.csi),
let (in_clk, src) = match source {
PllSource::Hsi => (unwrap!(input.hsi), Pllsrc::HSI),
PllSource::Hse => (unwrap!(input.hse), Pllsrc::HSE),
PllSource::Csi => (unwrap!(input.csi), Pllsrc::CSI),
}; };
let ref_clk = in_clk / config.prediv as u32; let ref_clk = in_clk / config.prediv as u32;
@ -667,7 +625,7 @@ fn init_pll(num: usize, config: Option<Pll>, input: &PllInput) -> PllOutput {
#[cfg(stm32h5)] #[cfg(stm32h5)]
RCC.pllcfgr(num).write(|w| { RCC.pllcfgr(num).write(|w| {
w.set_pllsrc(src); w.set_pllsrc(config.source);
w.set_divm(config.prediv); w.set_divm(config.prediv);
w.set_pllvcosel(vco_range); w.set_pllvcosel(vco_range);
w.set_pllrge(ref_range); w.set_pllrge(ref_range);
@ -681,7 +639,7 @@ fn init_pll(num: usize, config: Option<Pll>, input: &PllInput) -> PllOutput {
{ {
RCC.pllckselr().modify(|w| { RCC.pllckselr().modify(|w| {
w.set_divm(num, config.prediv); w.set_divm(num, config.prediv);
w.set_pllsrc(src); w.set_pllsrc(config.source);
}); });
RCC.pllcfgr().modify(|w| { RCC.pllcfgr().modify(|w| {
w.set_pllvcosel(num, vco_range); w.set_pllvcosel(num, vco_range);

30
embassy-stm32/src/rcc/l0l1.rs
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@ -156,23 +156,9 @@ pub(crate) unsafe fn init(config: Config) {
w.set_ppre2(config.apb2_pre); w.set_ppre2(config.apb2_pre);
}); });
let ahb_freq = sys_clk / config.ahb_pre; let hclk1 = sys_clk / config.ahb_pre;
let (pclk1, pclk1_tim) = super::util::calc_pclk(hclk1, config.apb1_pre);
let (apb1_freq, apb1_tim_freq) = match config.apb1_pre { let (pclk2, pclk2_tim) = super::util::calc_pclk(hclk1, config.apb2_pre);
APBPrescaler::DIV1 => (ahb_freq, ahb_freq),
pre => {
let freq = ahb_freq / pre;
(freq, freq * 2u32)
}
};
let (apb2_freq, apb2_tim_freq) = match config.apb2_pre {
APBPrescaler::DIV1 => (ahb_freq, ahb_freq),
pre => {
let freq = ahb_freq / pre;
(freq, freq * 2u32)
}
};
#[cfg(crs)] #[cfg(crs)]
if config.enable_hsi48 { if config.enable_hsi48 {
@ -209,11 +195,11 @@ pub(crate) unsafe fn init(config: Config) {
set_freqs(Clocks { set_freqs(Clocks {
sys: sys_clk, sys: sys_clk,
hclk1: ahb_freq, hclk1,
pclk1: apb1_freq, pclk1,
pclk2: apb2_freq, pclk2,
pclk1_tim: apb1_tim_freq, pclk1_tim,
pclk2_tim: apb2_tim_freq, pclk2_tim,
rtc, rtc,
}); });
} }

123
embassy-stm32/src/rcc/l4l5.rs
View File

@ -235,7 +235,7 @@ pub(crate) unsafe fn init(config: Config) {
// L4 has shared PLLSRC, PLLM, check it's equal in all PLLs. // L4 has shared PLLSRC, PLLM, check it's equal in all PLLs.
#[cfg(all(stm32l4, not(rcc_l4plus)))] #[cfg(all(stm32l4, not(rcc_l4plus)))]
match get_equal(_plls.into_iter().flatten().map(|p| (p.source, p.prediv))) { match super::util::get_equal(_plls.into_iter().flatten().map(|p| (p.source, p.prediv))) {
Err(()) => panic!("Source must be equal across all enabled PLLs."), Err(()) => panic!("Source must be equal across all enabled PLLs."),
Ok(None) => {} Ok(None) => {}
Ok(Some((source, prediv))) => RCC.pllcfgr().write(|w| { Ok(Some((source, prediv))) => RCC.pllcfgr().write(|w| {
@ -246,7 +246,7 @@ pub(crate) unsafe fn init(config: Config) {
// L4+, WL has shared PLLSRC, check it's equal in all PLLs. // L4+, WL has shared PLLSRC, check it's equal in all PLLs.
#[cfg(any(rcc_l4plus, stm32wl))] #[cfg(any(rcc_l4plus, stm32wl))]
match get_equal(_plls.into_iter().flatten().map(|p| p.source)) { match super::util::get_equal(_plls.into_iter().flatten().map(|p| p.source)) {
Err(()) => panic!("Source must be equal across all enabled PLLs."), Err(()) => panic!("Source must be equal across all enabled PLLs."),
Ok(None) => {} Ok(None) => {}
Ok(Some(source)) => RCC.pllcfgr().write(|w| { Ok(Some(source)) => RCC.pllcfgr().write(|w| {
@ -265,7 +265,7 @@ pub(crate) unsafe fn init(config: Config) {
ClockSrc::HSE => hse.unwrap(), ClockSrc::HSE => hse.unwrap(),
ClockSrc::HSI => hsi.unwrap(), ClockSrc::HSI => hsi.unwrap(),
ClockSrc::MSI => msi.unwrap(), ClockSrc::MSI => msi.unwrap(),
ClockSrc::PLL1_R => pll._r.unwrap(), ClockSrc::PLL1_R => pll.r.unwrap(),
}; };
#[cfg(stm32l4)] #[cfg(stm32l4)]
@ -276,8 +276,8 @@ pub(crate) unsafe fn init(config: Config) {
let _clk48 = match config.clk48_src { let _clk48 = match config.clk48_src {
Clk48Src::HSI48 => hsi48, Clk48Src::HSI48 => hsi48,
Clk48Src::MSI => msi, Clk48Src::MSI => msi,
Clk48Src::PLLSAI1_Q => pllsai1._q, Clk48Src::PLLSAI1_Q => pllsai1.q,
Clk48Src::PLL1_Q => pll._q, Clk48Src::PLL1_Q => pll.q,
}; };
#[cfg(rcc_l4plus)] #[cfg(rcc_l4plus)]
@ -285,32 +285,21 @@ pub(crate) unsafe fn init(config: Config) {
#[cfg(all(stm32l4, not(rcc_l4plus)))] #[cfg(all(stm32l4, not(rcc_l4plus)))]
assert!(sys_clk.0 <= 80_000_000); assert!(sys_clk.0 <= 80_000_000);
let ahb_freq = sys_clk / config.ahb_pre; let hclk1 = sys_clk / config.ahb_pre;
let (pclk1, pclk1_tim) = super::util::calc_pclk(hclk1, config.apb1_pre);
let (apb1_freq, apb1_tim_freq) = match config.apb1_pre { let (pclk2, pclk2_tim) = super::util::calc_pclk(hclk1, config.apb2_pre);
APBPrescaler::DIV1 => (ahb_freq, ahb_freq), #[cfg(not(any(stm32wl5x, stm32wb)))]
pre => { let hclk2 = hclk1;
let freq = ahb_freq / pre;
(freq, freq * 2u32)
}
};
let (apb2_freq, apb2_tim_freq) = match config.apb2_pre {
APBPrescaler::DIV1 => (ahb_freq, ahb_freq),
pre => {
let freq = ahb_freq / pre;
(freq, freq * 2u32)
}
};
#[cfg(any(stm32wl5x, stm32wb))] #[cfg(any(stm32wl5x, stm32wb))]
let _ahb2_freq = sys_clk / config.core2_ahb_pre; let hclk2 = sys_clk / config.core2_ahb_pre;
#[cfg(not(any(stm32wl, stm32wb)))]
let hclk3 = hclk1;
#[cfg(any(stm32wl, stm32wb))] #[cfg(any(stm32wl, stm32wb))]
let ahb3_freq = sys_clk / config.shared_ahb_pre; let hclk3 = sys_clk / config.shared_ahb_pre;
// Set flash wait states // Set flash wait states
#[cfg(stm32l4)] #[cfg(stm32l4)]
let latency = match sys_clk.0 { let latency = match hclk1.0 {
0..=16_000_000 => 0, 0..=16_000_000 => 0,
0..=32_000_000 => 1, 0..=32_000_000 => 1,
0..=48_000_000 => 2, 0..=48_000_000 => 2,
@ -318,7 +307,7 @@ pub(crate) unsafe fn init(config: Config) {
_ => 4, _ => 4,
}; };
#[cfg(stm32l5)] #[cfg(stm32l5)]
let latency = match sys_clk.0 { let latency = match hclk1.0 {
// VCORE Range 0 (performance), others TODO // VCORE Range 0 (performance), others TODO
0..=20_000_000 => 0, 0..=20_000_000 => 0,
0..=40_000_000 => 1, 0..=40_000_000 => 1,
@ -328,14 +317,14 @@ pub(crate) unsafe fn init(config: Config) {
_ => 5, _ => 5,
}; };
#[cfg(stm32wl)] #[cfg(stm32wl)]
let latency = match ahb3_freq.0 { let latency = match hclk3.0 {
// VOS RANGE1, others TODO. // VOS RANGE1, others TODO.
..=18_000_000 => 0, ..=18_000_000 => 0,
..=36_000_000 => 1, ..=36_000_000 => 1,
_ => 2, _ => 2,
}; };
#[cfg(stm32wb)] #[cfg(stm32wb)]
let latency = match ahb3_freq.0 { let latency = match hclk3.0 {
// VOS RANGE1, others TODO. // VOS RANGE1, others TODO.
..=18_000_000 => 0, ..=18_000_000 => 0,
..=36_000_000 => 1, ..=36_000_000 => 1,
@ -369,18 +358,15 @@ pub(crate) unsafe fn init(config: Config) {
set_freqs(Clocks { set_freqs(Clocks {
sys: sys_clk, sys: sys_clk,
hclk1: ahb_freq, hclk1,
hclk2: ahb_freq, hclk2,
#[cfg(not(stm32wl))] hclk3,
hclk3: ahb_freq, pclk1,
pclk1: apb1_freq, pclk2,
pclk2: apb2_freq, pclk1_tim,
pclk1_tim: apb1_tim_freq, pclk2_tim,
pclk2_tim: apb2_tim_freq,
#[cfg(stm32wl)] #[cfg(stm32wl)]
hclk3: ahb3_freq, pclk3: hclk3,
#[cfg(stm32wl)]
pclk3: ahb3_freq,
#[cfg(rcc_l4)] #[cfg(rcc_l4)]
hsi: None, hsi: None,
#[cfg(rcc_l4)] #[cfg(rcc_l4)]
@ -419,26 +405,18 @@ fn msirange_to_hertz(range: MSIRange) -> Hertz {
} }
} }
#[allow(unused)]
fn get_equal<T: Eq>(mut iter: impl Iterator<Item = T>) -> Result<Option<T>, ()> {
let Some(x) = iter.next() else { return Ok(None) };
if !iter.all(|y| y == x) {
return Err(());
}
return Ok(Some(x));
}
struct PllInput { struct PllInput {
hsi: Option<Hertz>, hsi: Option<Hertz>,
hse: Option<Hertz>, hse: Option<Hertz>,
msi: Option<Hertz>, msi: Option<Hertz>,
} }
#[allow(unused)]
#[derive(Default)] #[derive(Default)]
struct PllOutput { struct PllOutput {
_p: Option<Hertz>, p: Option<Hertz>,
_q: Option<Hertz>, q: Option<Hertz>,
_r: Option<Hertz>, r: Option<Hertz>,
} }
#[derive(PartialEq, Eq, Clone, Copy)] #[derive(PartialEq, Eq, Clone, Copy)]
@ -450,29 +428,33 @@ enum PllInstance {
Pllsai2, Pllsai2,
} }
fn init_pll(instance: PllInstance, config: Option<Pll>, input: &PllInput) -> PllOutput { fn pll_enable(instance: PllInstance, enabled: bool) {
// Disable PLL
match instance { match instance {
PllInstance::Pll => { PllInstance::Pll => {
RCC.cr().modify(|w| w.set_pllon(false)); RCC.cr().modify(|w| w.set_pllon(enabled));
while RCC.cr().read().pllrdy() {} while RCC.cr().read().pllrdy() != enabled {}
} }
#[cfg(any(stm32l4, stm32l5, stm32wb))] #[cfg(any(stm32l4, stm32l5, stm32wb))]
PllInstance::Pllsai1 => { PllInstance::Pllsai1 => {
RCC.cr().modify(|w| w.set_pllsai1on(false)); RCC.cr().modify(|w| w.set_pllsai1on(enabled));
while RCC.cr().read().pllsai1rdy() {} while RCC.cr().read().pllsai1rdy() != enabled {}
} }
#[cfg(any(stm32l47x, stm32l48x, stm32l49x, stm32l4ax, rcc_l4plus, stm32l5))] #[cfg(any(stm32l47x, stm32l48x, stm32l49x, stm32l4ax, rcc_l4plus, stm32l5))]
PllInstance::Pllsai2 => { PllInstance::Pllsai2 => {
RCC.cr().modify(|w| w.set_pllsai2on(false)); RCC.cr().modify(|w| w.set_pllsai2on(enabled));
while RCC.cr().read().pllsai2rdy() {} while RCC.cr().read().pllsai2rdy() != enabled {}
} }
} }
}
fn init_pll(instance: PllInstance, config: Option<Pll>, input: &PllInput) -> PllOutput {
// Disable PLL
pll_enable(instance, false);
let Some(pll) = config else { return PllOutput::default() }; let Some(pll) = config else { return PllOutput::default() };
let pll_src = match pll.source { let pll_src = match pll.source {
PLLSource::DISABLE => panic!("must not select PLL source as NONE"), PLLSource::DISABLE => panic!("must not select PLL source as DISABLE"),
PLLSource::HSE => input.hse, PLLSource::HSE => input.hse,
PLLSource::HSI => input.hsi, PLLSource::HSI => input.hsi,
PLLSource::MSI => input.msi, PLLSource::MSI => input.msi,
@ -535,22 +517,7 @@ fn init_pll(instance: PllInstance, config: Option<Pll>, input: &PllInput) -> Pll
} }
// Enable PLL // Enable PLL
match instance { pll_enable(instance, true);
PllInstance::Pll => {
RCC.cr().modify(|w| w.set_pllon(true));
while !RCC.cr().read().pllrdy() {}
}
#[cfg(any(stm32l4, stm32l5, stm32wb))]
PllInstance::Pllsai1 => {
RCC.cr().modify(|w| w.set_pllsai1on(true));
while !RCC.cr().read().pllsai1rdy() {}
}
#[cfg(any(stm32l47x, stm32l48x, stm32l49x, stm32l4ax, rcc_l4plus, stm32l5))]
PllInstance::Pllsai2 => {
RCC.cr().modify(|w| w.set_pllsai2on(true));
while !RCC.cr().read().pllsai2rdy() {}
}
}
PllOutput { _p: p, _q: q, _r: r } PllOutput { p, q, r }
} }

30
embassy-stm32/src/rcc/mod.rs
View File

@ -246,3 +246,33 @@ pub(crate) mod sealed {
} }
pub trait RccPeripheral: sealed::RccPeripheral + 'static {} pub trait RccPeripheral: sealed::RccPeripheral + 'static {}
#[allow(unused)]
mod util {
use crate::time::Hertz;
pub fn calc_pclk<D>(hclk: Hertz, ppre: D) -> (Hertz, Hertz)
where
Hertz: core::ops::Div<D, Output = Hertz>,
{
let pclk = hclk / ppre;
let pclk_tim = if hclk == pclk { pclk } else { pclk * 2u32 };
(pclk, pclk_tim)
}
pub fn all_equal<T: Eq>(mut iter: impl Iterator<Item = T>) -> bool {
let Some(x) = iter.next() else { return true };
if !iter.all(|y| y == x) {
return false;
}
true
}
pub fn get_equal<T: Eq>(mut iter: impl Iterator<Item = T>) -> Result<Option<T>, ()> {
let Some(x) = iter.next() else { return Ok(None) };
if !iter.all(|y| y == x) {
return Err(());
}
Ok(Some(x))
}
}

4
examples/stm32h5/src/bin/eth.rs
View File

@ -43,7 +43,7 @@ async fn main(spawner: Spawner) -> ! {
mode: HseMode::BypassDigital, mode: HseMode::BypassDigital,
}); });
config.rcc.pll1 = Some(Pll { config.rcc.pll1 = Some(Pll {
source: PllSource::Hse, source: PllSource::HSE,
prediv: PllPreDiv::DIV2, prediv: PllPreDiv::DIV2,
mul: PllMul::MUL125, mul: PllMul::MUL125,
divp: Some(PllDiv::DIV2), divp: Some(PllDiv::DIV2),
@ -54,7 +54,7 @@ async fn main(spawner: Spawner) -> ! {
config.rcc.apb1_pre = APBPrescaler::DIV1; config.rcc.apb1_pre = APBPrescaler::DIV1;
config.rcc.apb2_pre = APBPrescaler::DIV1; config.rcc.apb2_pre = APBPrescaler::DIV1;
config.rcc.apb3_pre = APBPrescaler::DIV1; config.rcc.apb3_pre = APBPrescaler::DIV1;
config.rcc.sys = Sysclk::Pll1P; config.rcc.sys = Sysclk::PLL1_P;
config.rcc.voltage_scale = VoltageScale::Scale0; config.rcc.voltage_scale = VoltageScale::Scale0;
let p = embassy_stm32::init(config); let p = embassy_stm32::init(config);
info!("Hello World!"); info!("Hello World!");

4
examples/stm32h5/src/bin/usb_serial.rs
View File

@ -30,7 +30,7 @@ async fn main(_spawner: Spawner) {
mode: HseMode::BypassDigital, mode: HseMode::BypassDigital,
}); });
config.rcc.pll1 = Some(Pll { config.rcc.pll1 = Some(Pll {
source: PllSource::Hse, source: PllSource::HSE,
prediv: PllPreDiv::DIV2, prediv: PllPreDiv::DIV2,
mul: PllMul::MUL125, mul: PllMul::MUL125,
divp: Some(PllDiv::DIV2), // 250mhz divp: Some(PllDiv::DIV2), // 250mhz
@ -41,7 +41,7 @@ async fn main(_spawner: Spawner) {
config.rcc.apb1_pre = APBPrescaler::DIV4; config.rcc.apb1_pre = APBPrescaler::DIV4;
config.rcc.apb2_pre = APBPrescaler::DIV2; config.rcc.apb2_pre = APBPrescaler::DIV2;
config.rcc.apb3_pre = APBPrescaler::DIV4; config.rcc.apb3_pre = APBPrescaler::DIV4;
config.rcc.sys = Sysclk::Pll1P; config.rcc.sys = Sysclk::PLL1_P;
config.rcc.voltage_scale = VoltageScale::Scale0; config.rcc.voltage_scale = VoltageScale::Scale0;
let p = embassy_stm32::init(config); let p = embassy_stm32::init(config);

7
examples/stm32h7/src/bin/adc.rs
View File

@ -14,10 +14,10 @@ async fn main(_spawner: Spawner) {
let mut config = Config::default(); let mut config = Config::default();
{ {
use embassy_stm32::rcc::*; use embassy_stm32::rcc::*;
config.rcc.hsi = Some(Hsi::Mhz64); config.rcc.hsi = Some(HSIPrescaler::DIV1);
config.rcc.csi = true; config.rcc.csi = true;
config.rcc.pll_src = PllSource::Hsi;
config.rcc.pll1 = Some(Pll { config.rcc.pll1 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4, prediv: PllPreDiv::DIV4,
mul: PllMul::MUL50, mul: PllMul::MUL50,
divp: Some(PllDiv::DIV2), divp: Some(PllDiv::DIV2),
@ -25,13 +25,14 @@ async fn main(_spawner: Spawner) {
divr: None, divr: None,
}); });
config.rcc.pll2 = Some(Pll { config.rcc.pll2 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4, prediv: PllPreDiv::DIV4,
mul: PllMul::MUL50, mul: PllMul::MUL50,
divp: Some(PllDiv::DIV8), // 100mhz divp: Some(PllDiv::DIV8), // 100mhz
divq: None, divq: None,
divr: None, divr: None,
}); });
config.rcc.sys = Sysclk::Pll1P; // 400 Mhz config.rcc.sys = Sysclk::PLL1_P; // 400 Mhz
config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz
config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz
config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz

6
examples/stm32h7/src/bin/camera.rs
View File

@ -28,17 +28,17 @@ async fn main(_spawner: Spawner) {
let mut config = Config::default(); let mut config = Config::default();
{ {
use embassy_stm32::rcc::*; use embassy_stm32::rcc::*;
config.rcc.hsi = Some(Hsi::Mhz64); config.rcc.hsi = Some(HSIPrescaler::DIV1);
config.rcc.csi = true; config.rcc.csi = true;
config.rcc.pll_src = PllSource::Hsi;
config.rcc.pll1 = Some(Pll { config.rcc.pll1 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4, prediv: PllPreDiv::DIV4,
mul: PllMul::MUL50, mul: PllMul::MUL50,
divp: Some(PllDiv::DIV2), divp: Some(PllDiv::DIV2),
divq: Some(PllDiv::DIV8), // 100mhz divq: Some(PllDiv::DIV8), // 100mhz
divr: None, divr: None,
}); });
config.rcc.sys = Sysclk::Pll1P; // 400 Mhz config.rcc.sys = Sysclk::PLL1_P; // 400 Mhz
config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz
config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz
config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz

7
examples/stm32h7/src/bin/dac.rs
View File

@ -16,10 +16,10 @@ fn main() -> ! {
let mut config = Config::default(); let mut config = Config::default();
{ {
use embassy_stm32::rcc::*; use embassy_stm32::rcc::*;
config.rcc.hsi = Some(Hsi::Mhz64); config.rcc.hsi = Some(HSIPrescaler::DIV1);
config.rcc.csi = true; config.rcc.csi = true;
config.rcc.pll_src = PllSource::Hsi;
config.rcc.pll1 = Some(Pll { config.rcc.pll1 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4, prediv: PllPreDiv::DIV4,
mul: PllMul::MUL50, mul: PllMul::MUL50,
divp: Some(PllDiv::DIV2), divp: Some(PllDiv::DIV2),
@ -27,13 +27,14 @@ fn main() -> ! {
divr: None, divr: None,
}); });
config.rcc.pll2 = Some(Pll { config.rcc.pll2 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4, prediv: PllPreDiv::DIV4,
mul: PllMul::MUL50, mul: PllMul::MUL50,
divp: Some(PllDiv::DIV8), // 100mhz divp: Some(PllDiv::DIV8), // 100mhz
divq: None, divq: None,
divr: None, divr: None,
}); });
config.rcc.sys = Sysclk::Pll1P; // 400 Mhz config.rcc.sys = Sysclk::PLL1_P; // 400 Mhz
config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz
config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz
config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz

7
examples/stm32h7/src/bin/dac_dma.rs
View File

@ -24,10 +24,10 @@ async fn main(spawner: Spawner) {
let mut config = embassy_stm32::Config::default(); let mut config = embassy_stm32::Config::default();
{ {
use embassy_stm32::rcc::*; use embassy_stm32::rcc::*;
config.rcc.hsi = Some(Hsi::Mhz64); config.rcc.hsi = Some(HSIPrescaler::DIV1);
config.rcc.csi = true; config.rcc.csi = true;
config.rcc.pll_src = PllSource::Hsi;
config.rcc.pll1 = Some(Pll { config.rcc.pll1 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4, prediv: PllPreDiv::DIV4,
mul: PllMul::MUL50, mul: PllMul::MUL50,
divp: Some(PllDiv::DIV2), divp: Some(PllDiv::DIV2),
@ -35,13 +35,14 @@ async fn main(spawner: Spawner) {
divr: None, divr: None,
}); });
config.rcc.pll2 = Some(Pll { config.rcc.pll2 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4, prediv: PllPreDiv::DIV4,
mul: PllMul::MUL50, mul: PllMul::MUL50,
divp: Some(PllDiv::DIV8), // 100mhz divp: Some(PllDiv::DIV8), // 100mhz
divq: None, divq: None,
divr: None, divr: None,
}); });
config.rcc.sys = Sysclk::Pll1P; // 400 Mhz config.rcc.sys = Sysclk::PLL1_P; // 400 Mhz
config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz
config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz
config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz

6
examples/stm32h7/src/bin/eth.rs
View File

@ -34,18 +34,18 @@ async fn main(spawner: Spawner) -> ! {
let mut config = Config::default(); let mut config = Config::default();
{ {
use embassy_stm32::rcc::*; use embassy_stm32::rcc::*;
config.rcc.hsi = Some(Hsi::Mhz64); config.rcc.hsi = Some(HSIPrescaler::DIV1);
config.rcc.csi = true; config.rcc.csi = true;
config.rcc.hsi48 = true; // needed for RNG config.rcc.hsi48 = true; // needed for RNG
config.rcc.pll_src = PllSource::Hsi;
config.rcc.pll1 = Some(Pll { config.rcc.pll1 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4, prediv: PllPreDiv::DIV4,
mul: PllMul::MUL50, mul: PllMul::MUL50,
divp: Some(PllDiv::DIV2), divp: Some(PllDiv::DIV2),
divq: None, divq: None,
divr: None, divr: None,
}); });
config.rcc.sys = Sysclk::Pll1P; // 400 Mhz config.rcc.sys = Sysclk::PLL1_P; // 400 Mhz
config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz
config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz
config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz

6
examples/stm32h7/src/bin/eth_client.rs
View File

@ -35,18 +35,18 @@ async fn main(spawner: Spawner) -> ! {
let mut config = Config::default(); let mut config = Config::default();
{ {
use embassy_stm32::rcc::*; use embassy_stm32::rcc::*;
config.rcc.hsi = Some(Hsi::Mhz64); config.rcc.hsi = Some(HSIPrescaler::DIV1);
config.rcc.csi = true; config.rcc.csi = true;
config.rcc.hsi48 = true; // needed for RNG config.rcc.hsi48 = true; // needed for RNG
config.rcc.pll_src = PllSource::Hsi;
config.rcc.pll1 = Some(Pll { config.rcc.pll1 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4, prediv: PllPreDiv::DIV4,
mul: PllMul::MUL50, mul: PllMul::MUL50,
divp: Some(PllDiv::DIV2), divp: Some(PllDiv::DIV2),
divq: None, divq: None,
divr: None, divr: None,
}); });
config.rcc.sys = Sysclk::Pll1P; // 400 Mhz config.rcc.sys = Sysclk::PLL1_P; // 400 Mhz
config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz
config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz
config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz

6
examples/stm32h7/src/bin/fmc.rs
View File

@ -14,17 +14,17 @@ async fn main(_spawner: Spawner) {
let mut config = Config::default(); let mut config = Config::default();
{ {
use embassy_stm32::rcc::*; use embassy_stm32::rcc::*;
config.rcc.hsi = Some(Hsi::Mhz64); config.rcc.hsi = Some(HSIPrescaler::DIV1);
config.rcc.csi = true; config.rcc.csi = true;
config.rcc.pll_src = PllSource::Hsi;
config.rcc.pll1 = Some(Pll { config.rcc.pll1 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4, prediv: PllPreDiv::DIV4,
mul: PllMul::MUL50, mul: PllMul::MUL50,
divp: Some(PllDiv::DIV2), divp: Some(PllDiv::DIV2),
divq: Some(PllDiv::DIV8), // 100mhz divq: Some(PllDiv::DIV8), // 100mhz
divr: None, divr: None,
}); });
config.rcc.sys = Sysclk::Pll1P; // 400 Mhz config.rcc.sys = Sysclk::PLL1_P; // 400 Mhz
config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz
config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz
config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz

6
examples/stm32h7/src/bin/low_level_timer_api.rs
View File

@ -17,18 +17,18 @@ async fn main(_spawner: Spawner) {
let mut config = Config::default(); let mut config = Config::default();
{ {
use embassy_stm32::rcc::*; use embassy_stm32::rcc::*;
config.rcc.hsi = Some(Hsi::Mhz64); config.rcc.hsi = Some(HSIPrescaler::DIV1);
config.rcc.csi = true; config.rcc.csi = true;
config.rcc.hsi48 = true; // needed for RNG config.rcc.hsi48 = true; // needed for RNG
config.rcc.pll_src = PllSource::Hsi;
config.rcc.pll1 = Some(Pll { config.rcc.pll1 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4, prediv: PllPreDiv::DIV4,
mul: PllMul::MUL50, mul: PllMul::MUL50,
divp: Some(PllDiv::DIV2), divp: Some(PllDiv::DIV2),
divq: Some(PllDiv::DIV8), // 100mhz divq: Some(PllDiv::DIV8), // 100mhz
divr: None, divr: None,
}); });
config.rcc.sys = Sysclk::Pll1P; // 400 Mhz config.rcc.sys = Sysclk::PLL1_P; // 400 Mhz
config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz
config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz
config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz

6
examples/stm32h7/src/bin/pwm.rs
View File

@ -17,17 +17,17 @@ async fn main(_spawner: Spawner) {
let mut config = Config::default(); let mut config = Config::default();
{ {
use embassy_stm32::rcc::*; use embassy_stm32::rcc::*;
config.rcc.hsi = Some(Hsi::Mhz64); config.rcc.hsi = Some(HSIPrescaler::DIV1);
config.rcc.csi = true; config.rcc.csi = true;
config.rcc.pll_src = PllSource::Hsi;
config.rcc.pll1 = Some(Pll { config.rcc.pll1 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4, prediv: PllPreDiv::DIV4,
mul: PllMul::MUL50, mul: PllMul::MUL50,
divp: Some(PllDiv::DIV2), divp: Some(PllDiv::DIV2),
divq: None, divq: None,
divr: None, divr: None,
}); });
config.rcc.sys = Sysclk::Pll1P; // 400 Mhz config.rcc.sys = Sysclk::PLL1_P; // 400 Mhz
config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz
config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz
config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz

6
examples/stm32h7/src/bin/sdmmc.rs
View File

@ -18,17 +18,17 @@ async fn main(_spawner: Spawner) -> ! {
let mut config = Config::default(); let mut config = Config::default();
{ {
use embassy_stm32::rcc::*; use embassy_stm32::rcc::*;
config.rcc.hsi = Some(Hsi::Mhz64); config.rcc.hsi = Some(HSIPrescaler::DIV1);
config.rcc.csi = true; config.rcc.csi = true;
config.rcc.pll_src = PllSource::Hsi;
config.rcc.pll1 = Some(Pll { config.rcc.pll1 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4, prediv: PllPreDiv::DIV4,
mul: PllMul::MUL50, mul: PllMul::MUL50,
divp: Some(PllDiv::DIV2), divp: Some(PllDiv::DIV2),
divq: Some(PllDiv::DIV4), // default clock chosen by SDMMCSEL. 200 Mhz divq: Some(PllDiv::DIV4), // default clock chosen by SDMMCSEL. 200 Mhz
divr: None, divr: None,
}); });
config.rcc.sys = Sysclk::Pll1P; // 400 Mhz config.rcc.sys = Sysclk::PLL1_P; // 400 Mhz
config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz
config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz
config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz

6
examples/stm32h7/src/bin/spi.rs
View File

@ -40,17 +40,17 @@ fn main() -> ! {
let mut config = Config::default(); let mut config = Config::default();
{ {
use embassy_stm32::rcc::*; use embassy_stm32::rcc::*;
config.rcc.hsi = Some(Hsi::Mhz64); config.rcc.hsi = Some(HSIPrescaler::DIV1);
config.rcc.csi = true; config.rcc.csi = true;
config.rcc.pll_src = PllSource::Hsi;
config.rcc.pll1 = Some(Pll { config.rcc.pll1 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4, prediv: PllPreDiv::DIV4,
mul: PllMul::MUL50, mul: PllMul::MUL50,
divp: Some(PllDiv::DIV2), divp: Some(PllDiv::DIV2),
divq: Some(PllDiv::DIV8), // used by SPI3. 100Mhz. divq: Some(PllDiv::DIV8), // used by SPI3. 100Mhz.
divr: None, divr: None,
}); });
config.rcc.sys = Sysclk::Pll1P; // 400 Mhz config.rcc.sys = Sysclk::PLL1_P; // 400 Mhz
config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz
config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz
config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz

6
examples/stm32h7/src/bin/spi_dma.rs
View File

@ -36,17 +36,17 @@ fn main() -> ! {
let mut config = Config::default(); let mut config = Config::default();
{ {
use embassy_stm32::rcc::*; use embassy_stm32::rcc::*;
config.rcc.hsi = Some(Hsi::Mhz64); config.rcc.hsi = Some(HSIPrescaler::DIV1);
config.rcc.csi = true; config.rcc.csi = true;
config.rcc.pll_src = PllSource::Hsi;
config.rcc.pll1 = Some(Pll { config.rcc.pll1 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4, prediv: PllPreDiv::DIV4,
mul: PllMul::MUL50, mul: PllMul::MUL50,
divp: Some(PllDiv::DIV2), divp: Some(PllDiv::DIV2),
divq: Some(PllDiv::DIV8), // used by SPI3. 100Mhz. divq: Some(PllDiv::DIV8), // used by SPI3. 100Mhz.
divr: None, divr: None,
}); });
config.rcc.sys = Sysclk::Pll1P; // 400 Mhz config.rcc.sys = Sysclk::PLL1_P; // 400 Mhz
config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz
config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz
config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz

6
examples/stm32h7/src/bin/usb_serial.rs
View File

@ -23,18 +23,18 @@ async fn main(_spawner: Spawner) {
let mut config = Config::default(); let mut config = Config::default();
{ {
use embassy_stm32::rcc::*; use embassy_stm32::rcc::*;
config.rcc.hsi = Some(Hsi::Mhz64); config.rcc.hsi = Some(HSIPrescaler::DIV1);
config.rcc.csi = true; config.rcc.csi = true;
config.rcc.hsi48 = true; // needed for USB config.rcc.hsi48 = true; // needed for USB
config.rcc.pll_src = PllSource::Hsi;
config.rcc.pll1 = Some(Pll { config.rcc.pll1 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4, prediv: PllPreDiv::DIV4,
mul: PllMul::MUL50, mul: PllMul::MUL50,
divp: Some(PllDiv::DIV2), divp: Some(PllDiv::DIV2),
divq: None, divq: None,
divr: None, divr: None,
}); });
config.rcc.sys = Sysclk::Pll1P; // 400 Mhz config.rcc.sys = Sysclk::PLL1_P; // 400 Mhz
config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz
config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz
config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz

18
tests/stm32/src/common.rs
View File

@ -312,7 +312,7 @@ pub fn config() -> Config {
mode: HseMode::BypassDigital, mode: HseMode::BypassDigital,
}); });
config.rcc.pll1 = Some(Pll { config.rcc.pll1 = Some(Pll {
source: PllSource::Hse, source: PllSource::HSE,
prediv: PllPreDiv::DIV2, prediv: PllPreDiv::DIV2,
mul: PllMul::MUL125, mul: PllMul::MUL125,
divp: Some(PllDiv::DIV2), divp: Some(PllDiv::DIV2),
@ -323,18 +323,18 @@ pub fn config() -> Config {
config.rcc.apb1_pre = APBPrescaler::DIV1; config.rcc.apb1_pre = APBPrescaler::DIV1;
config.rcc.apb2_pre = APBPrescaler::DIV1; config.rcc.apb2_pre = APBPrescaler::DIV1;
config.rcc.apb3_pre = APBPrescaler::DIV1; config.rcc.apb3_pre = APBPrescaler::DIV1;
config.rcc.sys = Sysclk::Pll1P; config.rcc.sys = Sysclk::PLL1_P;
config.rcc.voltage_scale = VoltageScale::Scale0; config.rcc.voltage_scale = VoltageScale::Scale0;
} }
#[cfg(any(feature = "stm32h755zi", feature = "stm32h753zi"))] #[cfg(any(feature = "stm32h755zi", feature = "stm32h753zi"))]
{ {
use embassy_stm32::rcc::*; use embassy_stm32::rcc::*;
config.rcc.hsi = Some(Hsi::Mhz64); config.rcc.hsi = Some(HSIPrescaler::DIV1);
config.rcc.csi = true; config.rcc.csi = true;
config.rcc.hsi48 = true; // needed for RNG config.rcc.hsi48 = true; // needed for RNG
config.rcc.pll_src = PllSource::Hsi;
config.rcc.pll1 = Some(Pll { config.rcc.pll1 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4, prediv: PllPreDiv::DIV4,
mul: PllMul::MUL50, mul: PllMul::MUL50,
divp: Some(PllDiv::DIV2), divp: Some(PllDiv::DIV2),
@ -342,13 +342,14 @@ pub fn config() -> Config {
divr: None, divr: None,
}); });
config.rcc.pll2 = Some(Pll { config.rcc.pll2 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4, prediv: PllPreDiv::DIV4,
mul: PllMul::MUL50, mul: PllMul::MUL50,
divp: Some(PllDiv::DIV8), // 100mhz divp: Some(PllDiv::DIV8), // 100mhz
divq: None, divq: None,
divr: None, divr: None,
}); });
config.rcc.sys = Sysclk::Pll1P; // 400 Mhz config.rcc.sys = Sysclk::PLL1_P; // 400 Mhz
config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz
config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz
config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz
@ -361,11 +362,11 @@ pub fn config() -> Config {
#[cfg(any(feature = "stm32h7a3zi"))] #[cfg(any(feature = "stm32h7a3zi"))]
{ {
use embassy_stm32::rcc::*; use embassy_stm32::rcc::*;
config.rcc.hsi = Some(Hsi::Mhz64); config.rcc.hsi = Some(HSIPrescaler::DIV1);
config.rcc.csi = true; config.rcc.csi = true;
config.rcc.hsi48 = true; // needed for RNG config.rcc.hsi48 = true; // needed for RNG
config.rcc.pll_src = PllSource::Hsi;
config.rcc.pll1 = Some(Pll { config.rcc.pll1 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4, prediv: PllPreDiv::DIV4,
mul: PllMul::MUL35, mul: PllMul::MUL35,
divp: Some(PllDiv::DIV2), // 280 Mhz divp: Some(PllDiv::DIV2), // 280 Mhz
@ -373,13 +374,14 @@ pub fn config() -> Config {
divr: None, divr: None,
}); });
config.rcc.pll2 = Some(Pll { config.rcc.pll2 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4, prediv: PllPreDiv::DIV4,
mul: PllMul::MUL35, mul: PllMul::MUL35,
divp: Some(PllDiv::DIV8), // 70 Mhz divp: Some(PllDiv::DIV8), // 70 Mhz
divq: None, divq: None,
divr: None, divr: None,
}); });
config.rcc.sys = Sysclk::Pll1P; // 280 Mhz config.rcc.sys = Sysclk::PLL1_P; // 280 Mhz
config.rcc.ahb_pre = AHBPrescaler::DIV1; // 280 Mhz config.rcc.ahb_pre = AHBPrescaler::DIV1; // 280 Mhz
config.rcc.apb1_pre = APBPrescaler::DIV2; // 140 Mhz config.rcc.apb1_pre = APBPrescaler::DIV2; // 140 Mhz
config.rcc.apb2_pre = APBPrescaler::DIV2; // 140 Mhz config.rcc.apb2_pre = APBPrescaler::DIV2; // 140 Mhz