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Merge pull request #2037 from embassy-rs/stm32-pac-pll-enums

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stm32/rcc: rename hse32 to hse, unify L0 and L1
This commit is contained in:
Dario Nieuwenhuis 2023-10-10 23:37:10 +00:00 committed by GitHub
commit 233aa1b53a
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GPG key ID: 4AEE18F83AFDEB23
14 changed files with 31 additions and 234 deletions
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4
embassy-stm32/Cargo.toml
View file

@ -59,7 +59,7 @@ sdio-host = "0.5.0"
embedded-sdmmc = { git = "https://github.com/embassy-rs/embedded-sdmmc-rs", rev = "a4f293d3a6f72158385f79c98634cb8a14d0d2fc", optional = true }
critical-section = "1.1"
atomic-polyfill = "1.0.1"
stm32-metapac = { git = "https://github.com/embassy-rs/stm32-data-generated", tag = "stm32-data-ff45aa382efb704dd2275dd69e71af73343f149d" }
stm32-metapac = { git = "https://github.com/embassy-rs/stm32-data-generated", tag = "stm32-data-9f45b0c48cc3de71ec6a66fe7e871b21aef0940c" }
vcell = "0.1.3"
bxcan = "0.7.0"
nb = "1.0.0"
@ -77,7 +77,7 @@ critical-section = { version = "1.1", features = ["std"] }
[build-dependencies]
proc-macro2 = "1.0.36"
quote = "1.0.15"
stm32-metapac = { git = "https://github.com/embassy-rs/stm32-data-generated", tag = "stm32-data-ff45aa382efb704dd2275dd69e71af73343f149d", default-features = false, features = ["metadata"]}
stm32-metapac = { git = "https://github.com/embassy-rs/stm32-data-generated", tag = "stm32-data-9f45b0c48cc3de71ec6a66fe7e871b21aef0940c", default-features = false, features = ["metadata"]}
[features]

2
embassy-stm32/src/rcc/bd.rs
View file

@ -163,7 +163,7 @@ impl BackupDomain {
}
// If not OK, reset backup domain and configure it.
#[cfg(not(any(rcc_l0, rcc_l1)))]
#[cfg(not(any(rcc_l0, rcc_l0_v2, rcc_l1)))]
{
Self::modify(|w| w.set_bdrst(true));
Self::modify(|w| w.set_bdrst(false));

28
embassy-stm32/src/rcc/l0.rs → embassy-stm32/src/rcc/l0l1.rs
View file

@ -95,7 +95,7 @@ pub(crate) unsafe fn init(config: Config) {
ClockSrc::HSI16 => {
// Enable HSI16
RCC.cr().write(|w| w.set_hsi16on(true));
while !RCC.cr().read().hsi16rdyf() {}
while !RCC.cr().read().hsi16rdy() {}
(HSI_FREQ, Sw::HSI16)
}
@ -117,7 +117,7 @@ pub(crate) unsafe fn init(config: Config) {
PLLSource::HSI16 => {
// Enable HSI
RCC.cr().write(|w| w.set_hsi16on(true));
while !RCC.cr().read().hsi16rdyf() {}
while !RCC.cr().read().hsi16rdy() {}
HSI_FREQ
}
};
@ -150,21 +150,17 @@ pub(crate) unsafe fn init(config: Config) {
config.lse.map(|_| Default::default()),
);
let wait_states = match config.voltage_scale {
VoltageScale::RANGE1 => match sys_clk.0 {
..=16_000_000 => 0,
_ => 1,
},
VoltageScale::RANGE2 => match sys_clk.0 {
..=8_000_000 => 0,
_ => 1,
},
VoltageScale::RANGE3 => 0,
_ => unreachable!(),
let wait_states = match (config.voltage_scale, sys_clk.0) {
(VoltageScale::RANGE1, ..=16_000_000) => 0,
(VoltageScale::RANGE2, ..=8_000_000) => 0,
(VoltageScale::RANGE3, ..=4_200_000) => 0,
_ => 1,
};
FLASH.acr().modify(|w| {
w.set_latency(wait_states != 0);
});
#[cfg(stm32l1)]
FLASH.acr().write(|w| w.set_acc64(true));
FLASH.acr().modify(|w| w.set_prften(true));
FLASH.acr().modify(|w| w.set_latency(wait_states != 0));
RCC.cfgr().modify(|w| {
w.set_sw(sw);

198
embassy-stm32/src/rcc/l1.rs
View file

@ -1,198 +0,0 @@
pub use crate::pac::rcc::vals::{
Hpre as AHBPrescaler, Msirange as MSIRange, Plldiv as PLLDiv, Pllmul as PLLMul, Ppre as APBPrescaler,
};
use crate::pac::rcc::vals::{Pllsrc, Sw};
use crate::pac::{FLASH, RCC};
use crate::rcc::{set_freqs, Clocks};
use crate::time::Hertz;
/// HSI speed
pub const HSI_FREQ: Hertz = Hertz(16_000_000);
/// LSI speed
pub const LSI_FREQ: Hertz = Hertz(32_000);
/// System clock mux source
#[derive(Clone, Copy)]
pub enum ClockSrc {
MSI(MSIRange),
PLL(PLLSource, PLLMul, PLLDiv),
HSE(Hertz),
HSI,
}
/// PLL clock input source
#[derive(Clone, Copy)]
pub enum PLLSource {
HSI,
HSE(Hertz),
}
impl From<PLLSource> for Pllsrc {
fn from(val: PLLSource) -> Pllsrc {
match val {
PLLSource::HSI => Pllsrc::HSI,
PLLSource::HSE(_) => Pllsrc::HSE,
}
}
}
/// Clocks configutation
pub struct Config {
pub mux: ClockSrc,
pub ahb_pre: AHBPrescaler,
pub apb1_pre: APBPrescaler,
pub apb2_pre: APBPrescaler,
}
impl Default for Config {
#[inline]
fn default() -> Config {
Config {
mux: ClockSrc::MSI(MSIRange::RANGE5),
ahb_pre: AHBPrescaler::DIV1,
apb1_pre: APBPrescaler::DIV1,
apb2_pre: APBPrescaler::DIV1,
}
}
}
pub(crate) unsafe fn init(config: Config) {
let (sys_clk, sw) = match config.mux {
ClockSrc::MSI(range) => {
// Set MSI range
RCC.icscr().write(|w| w.set_msirange(range));
// Enable MSI
RCC.cr().write(|w| w.set_msion(true));
while !RCC.cr().read().msirdy() {}
let freq = 32_768 * (1 << (range as u8 + 1));
(Hertz(freq), Sw::MSI)
}
ClockSrc::HSI => {
// Enable HSI
RCC.cr().write(|w| w.set_hsion(true));
while !RCC.cr().read().hsirdy() {}
(HSI_FREQ, Sw::HSI)
}
ClockSrc::HSE(freq) => {
// Enable HSE
RCC.cr().write(|w| w.set_hseon(true));
while !RCC.cr().read().hserdy() {}
(freq, Sw::HSE)
}
ClockSrc::PLL(src, mul, div) => {
let freq = match src {
PLLSource::HSE(freq) => {
// Enable HSE
RCC.cr().write(|w| w.set_hseon(true));
while !RCC.cr().read().hserdy() {}
freq
}
PLLSource::HSI => {
// Enable HSI
RCC.cr().write(|w| w.set_hsion(true));
while !RCC.cr().read().hsirdy() {}
HSI_FREQ
}
};
// Disable PLL
RCC.cr().modify(|w| w.set_pllon(false));
while RCC.cr().read().pllrdy() {}
let freq = freq * mul / div;
assert!(freq <= Hertz(32_000_000));
RCC.cfgr().write(move |w| {
w.set_pllmul(mul);
w.set_plldiv(div);
w.set_pllsrc(src.into());
});
// Enable PLL
RCC.cr().modify(|w| w.set_pllon(true));
while !RCC.cr().read().pllrdy() {}
(freq, Sw::PLL)
}
};
// Set flash 64-bit access, prefetch and wait states
if sys_clk >= Hertz(16_000_000) {
FLASH.acr().write(|w| w.set_acc64(true));
FLASH.acr().modify(|w| w.set_prften(true));
FLASH.acr().modify(|w| w.set_latency(true));
}
RCC.cfgr().modify(|w| {
w.set_sw(sw);
w.set_hpre(config.ahb_pre);
w.set_ppre1(config.apb1_pre);
w.set_ppre2(config.apb2_pre);
});
let ahb_freq = sys_clk / config.ahb_pre;
let (apb1_freq, apb1_tim_freq) = match config.apb1_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)]
if config.enable_hsi48 {
// Reset CRS peripheral
RCC.apb1rstr().modify(|w| w.set_crsrst(true));
RCC.apb1rstr().modify(|w| w.set_crsrst(false));
// Enable CRS peripheral
RCC.apb1enr().modify(|w| w.set_crsen(true));
// Initialize CRS
CRS.cfgr().write(|w|
// Select LSE as synchronization source
w.set_syncsrc(crs::vals::Syncsrc::LSE));
CRS.cr().modify(|w| {
w.set_autotrimen(true);
w.set_cen(true);
});
// Enable VREFINT reference for HSI48 oscillator
SYSCFG.cfgr3().modify(|w| {
w.set_enref_hsi48(true);
w.set_en_vrefint(true);
});
// Select HSI48 as USB clock
RCC.ccipr().modify(|w| w.set_hsi48msel(true));
// Enable dedicated USB clock
RCC.crrcr().modify(|w| w.set_hsi48on(true));
while !RCC.crrcr().read().hsi48rdy() {}
}
set_freqs(Clocks {
sys: sys_clk,
ahb1: ahb_freq,
apb1: apb1_freq,
apb2: apb2_freq,
apb1_tim: apb1_tim_freq,
apb2_tim: apb2_tim_freq,
});
}

3
embassy-stm32/src/rcc/mod.rs
View file

@ -19,8 +19,7 @@ pub use mco::*;
#[cfg_attr(rcc_g0, path = "g0.rs")]
#[cfg_attr(rcc_g4, path = "g4.rs")]
#[cfg_attr(any(rcc_h5, rcc_h50, rcc_h7, rcc_h7rm0433, rcc_h7ab), path = "h.rs")]
#[cfg_attr(rcc_l0, path = "l0.rs")]
#[cfg_attr(rcc_l1, path = "l1.rs")]
#[cfg_attr(any(rcc_l0, rcc_l0_v2, rcc_l1), path = "l0l1.rs")]
#[cfg_attr(rcc_l4, path = "l4.rs")]
#[cfg_attr(rcc_l5, path = "l5.rs")]
#[cfg_attr(rcc_u5, path = "u5.rs")]

4
embassy-stm32/src/rcc/wba.rs
View file

@ -28,7 +28,7 @@ pub enum PllSrc {
impl Into<Pllsrc> for PllSrc {
fn into(self) -> Pllsrc {
match self {
PllSrc::HSE(..) => Pllsrc::HSE32,
PllSrc::HSE(..) => Pllsrc::HSE,
PllSrc::HSI16 => Pllsrc::HSI16,
}
}
@ -37,7 +37,7 @@ impl Into<Pllsrc> for PllSrc {
impl Into<Sw> for ClockSrc {
fn into(self) -> Sw {
match self {
ClockSrc::HSE(..) => Sw::HSE32,
ClockSrc::HSE(..) => Sw::HSE,
ClockSrc::HSI16 => Sw::HSI16,
}
}

12
embassy-stm32/src/rcc/wl.rs
View file

@ -15,14 +15,14 @@ pub const HSI_FREQ: Hertz = Hertz(16_000_000);
/// LSI speed
pub const LSI_FREQ: Hertz = Hertz(32_000);
/// HSE32 speed
pub const HSE32_FREQ: Hertz = Hertz(32_000_000);
/// HSE speed
pub const HSE_FREQ: Hertz = Hertz(32_000_000);
/// System clock mux source
#[derive(Clone, Copy)]
pub enum ClockSrc {
MSI(MSIRange),
HSE32,
HSE,
HSI16,
}
@ -59,7 +59,7 @@ impl Default for Config {
pub(crate) unsafe fn init(config: Config) {
let (sys_clk, sw, vos) = match config.mux {
ClockSrc::HSI16 => (HSI_FREQ, Sw::HSI16, VoltageScale::RANGE2),
ClockSrc::HSE32 => (HSE32_FREQ, Sw::HSE32, VoltageScale::RANGE1),
ClockSrc::HSE => (HSE_FREQ, Sw::HSE, VoltageScale::RANGE1),
ClockSrc::MSI(range) => (msirange_to_hertz(range), Sw::MSI, msirange_to_vos(range)),
};
@ -113,8 +113,8 @@ pub(crate) unsafe fn init(config: Config) {
RCC.cr().write(|w| w.set_hsion(true));
while !RCC.cr().read().hsirdy() {}
}
ClockSrc::HSE32 => {
// Enable HSE32
ClockSrc::HSE => {
// Enable HSE
RCC.cr().write(|w| {
w.set_hsebyppwr(true);
w.set_hseon(true);

2
examples/stm32wl/src/bin/lora_lorawan.rs
View file

@ -33,7 +33,7 @@ bind_interrupts!(struct Irqs{
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let mut config = embassy_stm32::Config::default();
config.rcc.mux = embassy_stm32::rcc::ClockSrc::HSE32;
config.rcc.mux = embassy_stm32::rcc::ClockSrc::HSE;
config.rcc.rtc_mux = embassy_stm32::rcc::RtcClockSource::LSI;
let p = embassy_stm32::init(config);

2
examples/stm32wl/src/bin/lora_p2p_receive.rs
View file

@ -26,7 +26,7 @@ bind_interrupts!(struct Irqs{
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let mut config = embassy_stm32::Config::default();
config.rcc.mux = embassy_stm32::rcc::ClockSrc::HSE32;
config.rcc.mux = embassy_stm32::rcc::ClockSrc::HSE;
let p = embassy_stm32::init(config);
let spi = Spi::new_subghz(p.SUBGHZSPI, p.DMA1_CH1, p.DMA1_CH2);

2
examples/stm32wl/src/bin/lora_p2p_send.rs
View file

@ -26,7 +26,7 @@ bind_interrupts!(struct Irqs{
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let mut config = embassy_stm32::Config::default();
config.rcc.mux = embassy_stm32::rcc::ClockSrc::HSE32;
config.rcc.mux = embassy_stm32::rcc::ClockSrc::HSE;
let p = embassy_stm32::init(config);
let spi = Spi::new_subghz(p.SUBGHZSPI, p.DMA1_CH1, p.DMA1_CH2);

2
examples/stm32wl/src/bin/random.rs
View file

@ -15,7 +15,7 @@ bind_interrupts!(struct Irqs{
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let mut config = embassy_stm32::Config::default();
config.rcc.mux = embassy_stm32::rcc::ClockSrc::HSE32;
config.rcc.mux = embassy_stm32::rcc::ClockSrc::HSE;
config.rcc.rtc_mux = embassy_stm32::rcc::RtcClockSource::LSI;
let p = embassy_stm32::init(config);

2
examples/stm32wl/src/bin/rtc.rs
View file

@ -16,7 +16,7 @@ use {defmt_rtt as _, panic_probe as _};
async fn main(_spawner: Spawner) {
let p = {
let mut config = Config::default();
config.rcc.mux = ClockSrc::HSE32;
config.rcc.mux = ClockSrc::HSE;
config.rcc.lse = Some(Hertz(32_768));
config.rcc.rtc_mux = RtcClockSource::LSE;
embassy_stm32::init(config)

2
examples/stm32wl/src/bin/uart_async.rs
View file

@ -21,7 +21,7 @@ but can be surely changed for your needs.
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let mut config = embassy_stm32::Config::default();
config.rcc.mux = embassy_stm32::rcc::ClockSrc::HSE32;
config.rcc.mux = embassy_stm32::rcc::ClockSrc::HSE;
let p = embassy_stm32::init(config);
defmt::info!("Starting system");

2
tests/stm32/src/common.rs
View file

@ -332,7 +332,7 @@ pub fn config() -> Config {
use embassy_stm32::rcc::*;
config.rcc.mux = ClockSrc::PLL(
// 32Mhz clock (16 * 4 / 2)
PLLSource::HSI,
PLLSource::HSI16,
PLLMul::MUL4,
PLLDiv::DIV2,
);