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Merge pull request #1716 from xoviat/rcc-p

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stm32/rcc: extract and combine ahb/apb prescalers
This commit is contained in:
Dario Nieuwenhuis 2023-07-30 20:43:54 +00:00 committed by GitHub
commit 3aef5999d5
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15 changed files with 222 additions and 785 deletions
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55
embassy-stm32/src/rcc/c0.rs
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@ -1,5 +1,6 @@
pub use super::common::{AHBPrescaler, APBPrescaler};
use crate::pac::flash::vals::Latency;
use crate::pac::rcc::vals::{Hpre, Hsidiv, Ppre, Sw};
use crate::pac::rcc::vals::{Hsidiv, Ppre, Sw};
use crate::pac::{FLASH, RCC};
use crate::rcc::{set_freqs, Clocks};
use crate::time::Hertz;
@ -45,58 +46,6 @@ impl Into<Hsidiv> for HSIPrescaler {
}
}
/// AHB prescaler
#[derive(Clone, Copy, PartialEq)]
pub enum AHBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
Div64,
Div128,
Div256,
Div512,
}
/// APB prescaler
#[derive(Clone, Copy)]
pub enum APBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
}
impl Into<Ppre> for APBPrescaler {
fn into(self) -> Ppre {
match self {
APBPrescaler::NotDivided => Ppre::DIV1,
APBPrescaler::Div2 => Ppre::DIV2,
APBPrescaler::Div4 => Ppre::DIV4,
APBPrescaler::Div8 => Ppre::DIV8,
APBPrescaler::Div16 => Ppre::DIV16,
}
}
}
impl Into<Hpre> for AHBPrescaler {
fn into(self) -> Hpre {
match self {
AHBPrescaler::NotDivided => Hpre::DIV1,
AHBPrescaler::Div2 => Hpre::DIV2,
AHBPrescaler::Div4 => Hpre::DIV4,
AHBPrescaler::Div8 => Hpre::DIV8,
AHBPrescaler::Div16 => Hpre::DIV16,
AHBPrescaler::Div64 => Hpre::DIV64,
AHBPrescaler::Div128 => Hpre::DIV128,
AHBPrescaler::Div256 => Hpre::DIV256,
AHBPrescaler::Div512 => Hpre::DIV512,
}
}
}
/// Clocks configutation
pub struct Config {
pub mux: ClockSrc,

174
embassy-stm32/src/rcc/common.rs Normal file
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@ -0,0 +1,174 @@
use core::ops::Div;
#[allow(unused_imports)]
use crate::pac::rcc;
use crate::time::Hertz;
/// Voltage Scale
///
/// Represents the voltage range feeding the CPU core. The maximum core
/// clock frequency depends on this value.
///
/// Scale0 represents the highest voltage range
#[derive(Copy, Clone, PartialEq)]
pub enum VoltageScale {
Scale0,
Scale1,
#[cfg(not(any(rcc_wl5, rcc_wle)))]
Scale2,
#[cfg(not(any(rcc_wl5, rcc_wle)))]
Scale3,
}
/// AHB prescaler
#[derive(Clone, Copy, PartialEq)]
pub enum AHBPrescaler {
NotDivided,
Div2,
#[cfg(any(rcc_wb, rcc_wl5, rcc_wle))]
Div3,
Div4,
#[cfg(any(rcc_wb, rcc_wl5, rcc_wle))]
Div5,
#[cfg(any(rcc_wb, rcc_wl5, rcc_wle))]
Div6,
Div8,
#[cfg(any(rcc_wb, rcc_wl5, rcc_wle))]
Div10,
Div16,
#[cfg(any(rcc_wb, rcc_wl5, rcc_wle))]
Div32,
Div64,
Div128,
Div256,
Div512,
}
impl Div<AHBPrescaler> for Hertz {
type Output = Hertz;
fn div(self, rhs: AHBPrescaler) -> Self::Output {
let divisor = match rhs {
AHBPrescaler::NotDivided => 1,
AHBPrescaler::Div2 => 2,
#[cfg(any(rcc_wb, rcc_wl5, rcc_wle))]
AHBPrescaler::Div3 => 3,
AHBPrescaler::Div4 => 4,
#[cfg(any(rcc_wb, rcc_wl5, rcc_wle))]
AHBPrescaler::Div5 => 5,
#[cfg(any(rcc_wb, rcc_wl5, rcc_wle))]
AHBPrescaler::Div6 => 6,
AHBPrescaler::Div8 => 8,
#[cfg(any(rcc_wb, rcc_wl5, rcc_wle))]
AHBPrescaler::Div10 => 10,
AHBPrescaler::Div16 => 16,
#[cfg(any(rcc_wb, rcc_wl5, rcc_wle))]
AHBPrescaler::Div32 => 32,
AHBPrescaler::Div64 => 64,
AHBPrescaler::Div128 => 128,
AHBPrescaler::Div256 => 256,
AHBPrescaler::Div512 => 512,
};
Hertz(self.0 / divisor)
}
}
#[cfg(not(any(rcc_g4, rcc_wb, rcc_wl5, rcc_wle)))]
impl From<AHBPrescaler> for rcc::vals::Hpre {
fn from(val: AHBPrescaler) -> rcc::vals::Hpre {
use rcc::vals::Hpre;
match val {
#[cfg(not(rcc_u5))]
AHBPrescaler::NotDivided => Hpre::DIV1,
#[cfg(rcc_u5)]
AHBPrescaler::NotDivided => Hpre::NONE,
AHBPrescaler::Div2 => Hpre::DIV2,
AHBPrescaler::Div4 => Hpre::DIV4,
AHBPrescaler::Div8 => Hpre::DIV8,
AHBPrescaler::Div16 => Hpre::DIV16,
AHBPrescaler::Div64 => Hpre::DIV64,
AHBPrescaler::Div128 => Hpre::DIV128,
AHBPrescaler::Div256 => Hpre::DIV256,
AHBPrescaler::Div512 => Hpre::DIV512,
}
}
}
#[cfg(any(rcc_wb, rcc_wl5, rcc_wle))]
impl From<AHBPrescaler> for u8 {
fn from(val: AHBPrescaler) -> u8 {
match val {
AHBPrescaler::NotDivided => 0x0,
AHBPrescaler::Div2 => 0x08,
AHBPrescaler::Div3 => 0x01,
AHBPrescaler::Div4 => 0x09,
AHBPrescaler::Div5 => 0x02,
AHBPrescaler::Div6 => 0x05,
AHBPrescaler::Div8 => 0x0a,
AHBPrescaler::Div10 => 0x06,
AHBPrescaler::Div16 => 0x0b,
AHBPrescaler::Div32 => 0x07,
AHBPrescaler::Div64 => 0x0c,
AHBPrescaler::Div128 => 0x0d,
AHBPrescaler::Div256 => 0x0e,
AHBPrescaler::Div512 => 0x0f,
}
}
}
/// APB prescaler
#[derive(Clone, Copy)]
pub enum APBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
}
impl Div<APBPrescaler> for Hertz {
type Output = Hertz;
fn div(self, rhs: APBPrescaler) -> Self::Output {
let divisor = match rhs {
APBPrescaler::NotDivided => 1,
APBPrescaler::Div2 => 2,
APBPrescaler::Div4 => 4,
APBPrescaler::Div8 => 8,
APBPrescaler::Div16 => 16,
};
Hertz(self.0 / divisor)
}
}
#[cfg(not(any(rcc_f1, rcc_f100, rcc_f1cl, rcc_g4, rcc_h7, rcc_h7ab, rcc_wb, rcc_wl5, rcc_wle)))]
impl From<APBPrescaler> for rcc::vals::Ppre {
fn from(val: APBPrescaler) -> rcc::vals::Ppre {
use rcc::vals::Ppre;
match val {
#[cfg(not(rcc_u5))]
APBPrescaler::NotDivided => Ppre::DIV1,
#[cfg(rcc_u5)]
APBPrescaler::NotDivided => Ppre::NONE,
APBPrescaler::Div2 => Ppre::DIV2,
APBPrescaler::Div4 => Ppre::DIV4,
APBPrescaler::Div8 => Ppre::DIV8,
APBPrescaler::Div16 => Ppre::DIV16,
}
}
}
#[cfg(any(rcc_wb, rcc_wl5, rcc_wle))]
impl From<APBPrescaler> for u8 {
fn from(val: APBPrescaler) -> u8 {
match val {
APBPrescaler::NotDivided => 1,
APBPrescaler::Div2 => 0x04,
APBPrescaler::Div4 => 0x05,
APBPrescaler::Div8 => 0x06,
APBPrescaler::Div16 => 0x07,
}
}
}

118
embassy-stm32/src/rcc/f2.rs
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@ -1,8 +1,9 @@
use core::convert::TryFrom;
use core::ops::{Div, Mul};
pub use super::common::{AHBPrescaler, APBPrescaler};
use crate::pac::flash::vals::Latency;
use crate::pac::rcc::vals::{Hpre, Pllp, Pllsrc, Ppre, Sw};
use crate::pac::rcc::vals::{Pllp, Pllsrc, Sw};
use crate::pac::{FLASH, RCC};
use crate::rcc::{set_freqs, Clocks};
use crate::time::Hertz;
@ -200,114 +201,15 @@ pub struct PLLClocks {
pub pll48_freq: Hertz,
}
/// AHB prescaler
#[derive(Clone, Copy, PartialEq)]
pub enum AHBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
Div64,
Div128,
Div256,
Div512,
}
pub use super::common::VoltageScale;
impl Div<AHBPrescaler> for Hertz {
type Output = Hertz;
fn div(self, rhs: AHBPrescaler) -> Self::Output {
let divisor = match rhs {
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,
};
Hertz(self.0 / divisor)
}
}
/// APB prescaler
#[derive(Clone, Copy)]
pub enum APBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
}
impl Div<APBPrescaler> for Hertz {
type Output = Hertz;
fn div(self, rhs: APBPrescaler) -> Self::Output {
let divisor = match rhs {
APBPrescaler::NotDivided => 1,
APBPrescaler::Div2 => 2,
APBPrescaler::Div4 => 4,
APBPrescaler::Div8 => 8,
APBPrescaler::Div16 => 16,
};
Hertz(self.0 / divisor)
}
}
impl Into<Ppre> for APBPrescaler {
fn into(self) -> Ppre {
match self {
APBPrescaler::NotDivided => Ppre::DIV1,
APBPrescaler::Div2 => Ppre::DIV2,
APBPrescaler::Div4 => Ppre::DIV4,
APBPrescaler::Div8 => Ppre::DIV8,
APBPrescaler::Div16 => Ppre::DIV16,
}
}
}
impl Into<Hpre> for AHBPrescaler {
fn into(self) -> Hpre {
match self {
AHBPrescaler::NotDivided => Hpre::DIV1,
AHBPrescaler::Div2 => Hpre::DIV2,
AHBPrescaler::Div4 => Hpre::DIV4,
AHBPrescaler::Div8 => Hpre::DIV8,
AHBPrescaler::Div16 => Hpre::DIV16,
AHBPrescaler::Div64 => Hpre::DIV64,
AHBPrescaler::Div128 => Hpre::DIV128,
AHBPrescaler::Div256 => Hpre::DIV256,
AHBPrescaler::Div512 => Hpre::DIV512,
}
}
}
/// Voltage Range
///
/// Represents the system supply voltage range
#[derive(Copy, Clone, PartialEq)]
pub enum VoltageRange {
/// 1.8 to 3.6 V
Min1V8,
/// 2.1 to 3.6 V
Min2V1,
/// 2.4 to 3.6 V
Min2V4,
/// 2.7 to 3.6 V
Min2V7,
}
impl VoltageRange {
impl VoltageScale {
const fn wait_states(&self, ahb_freq: Hertz) -> Option<Latency> {
let ahb_freq = ahb_freq.0;
// Reference: RM0033 - Table 3. Number of wait states according to Cortex®-M3 clock
// frequency
match self {
VoltageRange::Min1V8 => {
VoltageScale::Scale3 => {
if ahb_freq <= 16_000_000 {
Some(Latency::WS0)
} else if ahb_freq <= 32_000_000 {
@ -328,7 +230,7 @@ impl VoltageRange {
None
}
}
VoltageRange::Min2V1 => {
VoltageScale::Scale2 => {
if ahb_freq <= 18_000_000 {
Some(Latency::WS0)
} else if ahb_freq <= 36_000_000 {
@ -347,7 +249,7 @@ impl VoltageRange {
None
}
}
VoltageRange::Min2V4 => {
VoltageScale::Scale1 => {
if ahb_freq <= 24_000_000 {
Some(Latency::WS0)
} else if ahb_freq <= 48_000_000 {
@ -362,7 +264,7 @@ impl VoltageRange {
None
}
}
VoltageRange::Min2V7 => {
VoltageScale::Scale0 => {
if ahb_freq <= 30_000_000 {
Some(Latency::WS0)
} else if ahb_freq <= 60_000_000 {
@ -386,7 +288,7 @@ pub struct Config {
pub pll_mux: PLLSrc,
pub pll: PLLConfig,
pub mux: ClockSrc,
pub voltage: VoltageRange,
pub voltage: VoltageScale,
pub ahb_pre: AHBPrescaler,
pub apb1_pre: APBPrescaler,
pub apb2_pre: APBPrescaler,
@ -400,7 +302,7 @@ impl Default for Config {
hsi: true,
pll_mux: PLLSrc::HSI,
pll: PLLConfig::default(),
voltage: VoltageRange::Min1V8,
voltage: VoltageScale::Scale3,
mux: ClockSrc::HSI,
ahb_pre: AHBPrescaler::NotDivided,
apb1_pre: APBPrescaler::NotDivided,

74
embassy-stm32/src/rcc/g0.rs
View File

@ -1,5 +1,6 @@
pub use super::common::{AHBPrescaler, APBPrescaler};
use crate::pac::flash::vals::Latency;
use crate::pac::rcc::vals::{self, Hpre, Hsidiv, Ppre, Sw};
use crate::pac::rcc::vals::{self, Hsidiv, Ppre, Sw};
use crate::pac::{FLASH, PWR, RCC};
use crate::rcc::{set_freqs, Clocks};
use crate::time::Hertz;
@ -172,58 +173,6 @@ impl From<Pllr> for u32 {
}
}
/// AHB prescaler
#[derive(Clone, Copy, PartialEq)]
pub enum AHBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
Div64,
Div128,
Div256,
Div512,
}
/// APB prescaler
#[derive(Clone, Copy)]
pub enum APBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
}
impl Into<Ppre> for APBPrescaler {
fn into(self) -> Ppre {
match self {
APBPrescaler::NotDivided => Ppre::DIV1,
APBPrescaler::Div2 => Ppre::DIV2,
APBPrescaler::Div4 => Ppre::DIV4,
APBPrescaler::Div8 => Ppre::DIV8,
APBPrescaler::Div16 => Ppre::DIV16,
}
}
}
impl Into<Hpre> for AHBPrescaler {
fn into(self) -> Hpre {
match self {
AHBPrescaler::NotDivided => Hpre::DIV1,
AHBPrescaler::Div2 => Hpre::DIV2,
AHBPrescaler::Div4 => Hpre::DIV4,
AHBPrescaler::Div8 => Hpre::DIV8,
AHBPrescaler::Div16 => Hpre::DIV16,
AHBPrescaler::Div64 => Hpre::DIV64,
AHBPrescaler::Div128 => Hpre::DIV128,
AHBPrescaler::Div256 => Hpre::DIV256,
AHBPrescaler::Div512 => Hpre::DIV512,
}
}
}
/// Clocks configutation
pub struct Config {
pub mux: ClockSrc,
@ -425,25 +374,14 @@ pub(crate) unsafe fn init(config: Config) {
FLASH.acr().modify(|w| w.set_latency(target_flash_latency));
}
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,
};
let ahb_freq = sys_clk / ahb_div;
let ahb_freq = Hertz(sys_clk) / config.ahb_pre;
let (apb_freq, apb_tim_freq) = match config.apb_pre {
APBPrescaler::NotDivided => (ahb_freq, ahb_freq),
APBPrescaler::NotDivided => (ahb_freq.0, ahb_freq.0),
pre => {
let pre: Ppre = pre.into();
let pre: u8 = 1 << (pre.to_bits() - 3);
let freq = ahb_freq / pre as u32;
let freq = ahb_freq.0 / pre as u32;
(freq, freq * 2)
}
};
@ -455,7 +393,7 @@ pub(crate) unsafe fn init(config: Config) {
set_freqs(Clocks {
sys: Hertz(sys_clk),
ahb1: Hertz(ahb_freq),
ahb1: ahb_freq,
apb1: Hertz(apb_freq),
apb1_tim: Hertz(apb_tim_freq),
});

25
embassy-stm32/src/rcc/g4.rs
View File

@ -2,6 +2,7 @@ use stm32_metapac::flash::vals::Latency;
use stm32_metapac::rcc::vals::{Hpre, Pllsrc, Ppre, Sw};
use stm32_metapac::FLASH;
pub use super::common::{AHBPrescaler, APBPrescaler};
use crate::pac::{PWR, RCC};
use crate::rcc::sealed::RccPeripheral;
use crate::rcc::{set_freqs, Clocks};
@ -21,30 +22,6 @@ pub enum ClockSrc {
PLL,
}
/// AHB prescaler
#[derive(Clone, Copy, PartialEq)]
pub enum AHBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
Div64,
Div128,
Div256,
Div512,
}
/// APB prescaler
#[derive(Clone, Copy)]
pub enum APBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
}
/// PLL clock input source
#[derive(Clone, Copy, Debug)]
pub enum PllSrc {

104
embassy-stm32/src/rcc/h5.rs
View File

@ -1,6 +1,6 @@
use core::marker::PhantomData;
use stm32_metapac::rcc::vals::{Hpre, Ppre, Timpre};
use stm32_metapac::rcc::vals::Timpre;
use crate::pac::pwr::vals::Vos;
use crate::pac::rcc::vals::{Hseext, Hsidiv, Mco1, Mco2, Pllrge, Pllsrc, Pllvcosel, Sw};
@ -26,21 +26,7 @@ const VCO_MAX: u32 = 420_000_000;
const VCO_WIDE_MIN: u32 = 128_000_000;
const VCO_WIDE_MAX: u32 = 560_000_000;
/// Voltage Scale
///
/// Represents the voltage range feeding the CPU core. The maximum core
/// clock frequency depends on this value.
#[derive(Copy, Clone, PartialEq)]
pub enum VoltageScale {
/// VOS 0 range VCORE 1.30V - 1.40V
Scale0,
/// VOS 1 range VCORE 1.15V - 1.26V
Scale1,
/// VOS 2 range VCORE 1.05V - 1.15V
Scale2,
/// VOS 3 range VCORE 0.95V - 1.05V
Scale3,
}
pub use super::common::{AHBPrescaler, APBPrescaler, VoltageScale};
pub enum HseMode {
/// crystal/ceramic oscillator (HSEBYP=0)
@ -105,57 +91,7 @@ pub struct Pll {
pub divr: Option<u16>,
}
/// AHB prescaler
#[derive(Clone, Copy, PartialEq)]
pub enum AHBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
Div64,
Div128,
Div256,
Div512,
}
impl AHBPrescaler {
fn div(&self, clk: Hertz) -> Hertz {
match self {
Self::NotDivided => clk,
Self::Div2 => clk / 2u32,
Self::Div4 => clk / 4u32,
Self::Div8 => clk / 8u32,
Self::Div16 => clk / 16u32,
Self::Div64 => clk / 64u32,
Self::Div128 => clk / 128u32,
Self::Div256 => clk / 256u32,
Self::Div512 => clk / 512u32,
}
}
}
/// APB prescaler
#[derive(Clone, Copy)]
pub enum APBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
}
impl APBPrescaler {
fn div(&self, clk: Hertz) -> Hertz {
match self {
Self::NotDivided => clk,
Self::Div2 => clk / 2u32,
Self::Div4 => clk / 4u32,
Self::Div8 => clk / 8u32,
Self::Div16 => clk / 16u32,
}
}
fn div_tim(&self, clk: Hertz, tim: TimerPrescaler) -> Hertz {
match (tim, self) {
// The timers kernel clock is equal to rcc_hclk1 if PPRE1 or PPRE2 corresponds to a
@ -193,34 +129,6 @@ impl From<TimerPrescaler> for Timpre {
}
}
impl From<APBPrescaler> for Ppre {
fn from(val: APBPrescaler) -> Ppre {
match val {
APBPrescaler::NotDivided => Ppre::DIV1,
APBPrescaler::Div2 => Ppre::DIV2,
APBPrescaler::Div4 => Ppre::DIV4,
APBPrescaler::Div8 => Ppre::DIV8,
APBPrescaler::Div16 => Ppre::DIV16,
}
}
}
impl From<AHBPrescaler> for Hpre {
fn from(val: AHBPrescaler) -> Hpre {
match val {
AHBPrescaler::NotDivided => Hpre::DIV1,
AHBPrescaler::Div2 => Hpre::DIV2,
AHBPrescaler::Div4 => Hpre::DIV4,
AHBPrescaler::Div8 => Hpre::DIV8,
AHBPrescaler::Div16 => Hpre::DIV16,
AHBPrescaler::Div64 => Hpre::DIV64,
AHBPrescaler::Div128 => Hpre::DIV128,
AHBPrescaler::Div256 => Hpre::DIV256,
AHBPrescaler::Div512 => Hpre::DIV512,
}
}
}
/// Configuration of the core clocks
#[non_exhaustive]
pub struct Config {
@ -406,13 +314,13 @@ pub(crate) unsafe fn init(config: Config) {
};
assert!(sys <= max_clk);
let hclk = config.ahb_pre.div(sys);
let hclk = sys / config.ahb_pre;
let apb1 = config.apb1_pre.div(hclk);
let apb1 = hclk / config.apb1_pre;
let apb1_tim = config.apb1_pre.div_tim(hclk, config.timer_prescaler);
let apb2 = config.apb2_pre.div(hclk);
let apb2 = hclk / config.apb2_pre;
let apb2_tim = config.apb2_pre.div_tim(hclk, config.timer_prescaler);
let apb3 = config.apb3_pre.div(hclk);
let apb3 = hclk / config.apb3_pre;
flash_setup(hclk, config.voltage_scale);

16
embassy-stm32/src/rcc/h7.rs
View File

@ -24,21 +24,7 @@ pub const HSI48_FREQ: Hertz = Hertz(48_000_000);
/// LSI speed
pub const LSI_FREQ: Hertz = Hertz(32_000);
/// Voltage Scale
///
/// Represents the voltage range feeding the CPU core. The maximum core
/// clock frequency depends on this value.
#[derive(Copy, Clone, PartialEq)]
pub enum VoltageScale {
/// VOS 0 range VCORE 1.26V - 1.40V
Scale0,
/// VOS 1 range VCORE 1.15V - 1.26V
Scale1,
/// VOS 2 range VCORE 1.05V - 1.15V
Scale2,
/// VOS 3 range VCORE 0.95V - 1.05V
Scale3,
}
pub use super::common::VoltageScale;
#[derive(Clone, Copy)]
pub enum AdcClockSource {

53
embassy-stm32/src/rcc/l0.rs
View File

@ -1,3 +1,4 @@
pub use super::common::{AHBPrescaler, APBPrescaler};
use crate::pac::rcc::vals::{Hpre, Msirange, Plldiv, Pllmul, Pllsrc, Ppre, Sw};
use crate::pac::RCC;
#[cfg(crs)]
@ -70,30 +71,6 @@ pub enum PLLMul {
Mul48,
}
/// AHB prescaler
#[derive(Clone, Copy, PartialEq)]
pub enum AHBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
Div64,
Div128,
Div256,
Div512,
}
/// APB prescaler
#[derive(Clone, Copy)]
pub enum APBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
}
/// PLL clock input source
#[derive(Clone, Copy)]
pub enum PLLSource {
@ -136,34 +113,6 @@ impl From<PLLSource> for Pllsrc {
}
}
impl From<APBPrescaler> for Ppre {
fn from(val: APBPrescaler) -> Ppre {
match val {
APBPrescaler::NotDivided => Ppre::DIV1,
APBPrescaler::Div2 => Ppre::DIV2,
APBPrescaler::Div4 => Ppre::DIV4,
APBPrescaler::Div8 => Ppre::DIV8,
APBPrescaler::Div16 => Ppre::DIV16,
}
}
}
impl From<AHBPrescaler> for Hpre {
fn from(val: AHBPrescaler) -> Hpre {
match val {
AHBPrescaler::NotDivided => Hpre::DIV1,
AHBPrescaler::Div2 => Hpre::DIV2,
AHBPrescaler::Div4 => Hpre::DIV4,
AHBPrescaler::Div8 => Hpre::DIV8,
AHBPrescaler::Div16 => Hpre::DIV16,
AHBPrescaler::Div64 => Hpre::DIV64,
AHBPrescaler::Div128 => Hpre::DIV128,
AHBPrescaler::Div256 => Hpre::DIV256,
AHBPrescaler::Div512 => Hpre::DIV512,
}
}
}
impl From<MSIRange> for Msirange {
fn from(val: MSIRange) -> Msirange {
match val {

53
embassy-stm32/src/rcc/l1.rs
View File

@ -1,3 +1,4 @@
pub use super::common::{AHBPrescaler, APBPrescaler};
use crate::pac::rcc::vals::{Hpre, Msirange, Plldiv, Pllmul, Pllsrc, Ppre, Sw};
use crate::pac::{FLASH, RCC};
use crate::rcc::{set_freqs, Clocks};
@ -68,30 +69,6 @@ pub enum PLLMul {
Mul48,
}
/// AHB prescaler
#[derive(Clone, Copy, PartialEq)]
pub enum AHBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
Div64,
Div128,
Div256,
Div512,
}
/// APB prescaler
#[derive(Clone, Copy)]
pub enum APBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
}
/// PLL clock input source
#[derive(Clone, Copy)]
pub enum PLLSource {
@ -134,34 +111,6 @@ impl From<PLLSource> for Pllsrc {
}
}
impl From<APBPrescaler> for Ppre {
fn from(val: APBPrescaler) -> Ppre {
match val {
APBPrescaler::NotDivided => Ppre::DIV1,
APBPrescaler::Div2 => Ppre::DIV2,
APBPrescaler::Div4 => Ppre::DIV4,
APBPrescaler::Div8 => Ppre::DIV8,
APBPrescaler::Div16 => Ppre::DIV16,
}
}
}
impl From<AHBPrescaler> for Hpre {
fn from(val: AHBPrescaler) -> Hpre {
match val {
AHBPrescaler::NotDivided => Hpre::DIV1,
AHBPrescaler::Div2 => Hpre::DIV2,
AHBPrescaler::Div4 => Hpre::DIV4,
AHBPrescaler::Div8 => Hpre::DIV8,
AHBPrescaler::Div16 => Hpre::DIV16,
AHBPrescaler::Div64 => Hpre::DIV64,
AHBPrescaler::Div128 => Hpre::DIV128,
AHBPrescaler::Div256 => Hpre::DIV256,
AHBPrescaler::Div512 => Hpre::DIV512,
}
}
}
impl From<MSIRange> for Msirange {
fn from(val: MSIRange) -> Msirange {
match val {

53
embassy-stm32/src/rcc/l4.rs
View File

@ -4,6 +4,7 @@ use embassy_hal_internal::into_ref;
use stm32_metapac::rcc::regs::Cfgr;
use stm32_metapac::rcc::vals::{Lsedrv, Mcopre, Mcosel};
pub use super::common::{AHBPrescaler, APBPrescaler};
use crate::gpio::sealed::AFType;
use crate::gpio::Speed;
use crate::pac::rcc::vals::{Hpre, Msirange, Pllsrc, Ppre, Sw};
@ -78,30 +79,6 @@ pub enum PLLDiv {
Div4,
}
/// AHB prescaler
#[derive(Clone, Copy, PartialEq)]
pub enum AHBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
Div64,
Div128,
Div256,
Div512,
}
/// APB prescaler
#[derive(Clone, Copy)]
pub enum APBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
}
/// PLL clock input source
#[derive(Clone, Copy)]
pub enum PLLSource {
@ -209,34 +186,6 @@ impl From<PLLSource> for Pllsrc {
}
}
impl From<APBPrescaler> for Ppre {
fn from(val: APBPrescaler) -> Ppre {
match val {
APBPrescaler::NotDivided => Ppre::DIV1,
APBPrescaler::Div2 => Ppre::DIV2,
APBPrescaler::Div4 => Ppre::DIV4,
APBPrescaler::Div8 => Ppre::DIV8,
APBPrescaler::Div16 => Ppre::DIV16,
}
}
}
impl From<AHBPrescaler> for Hpre {
fn from(val: AHBPrescaler) -> Hpre {
match val {
AHBPrescaler::NotDivided => Hpre::DIV1,
AHBPrescaler::Div2 => Hpre::DIV2,
AHBPrescaler::Div4 => Hpre::DIV4,
AHBPrescaler::Div8 => Hpre::DIV8,
AHBPrescaler::Div16 => Hpre::DIV16,
AHBPrescaler::Div64 => Hpre::DIV64,
AHBPrescaler::Div128 => Hpre::DIV128,
AHBPrescaler::Div256 => Hpre::DIV256,
AHBPrescaler::Div512 => Hpre::DIV512,
}
}
}
impl From<MSIRange> for Msirange {
fn from(val: MSIRange) -> Msirange {
match val {

53
embassy-stm32/src/rcc/l5.rs
View File

@ -1,5 +1,6 @@
use stm32_metapac::PWR;
pub use super::common::{AHBPrescaler, APBPrescaler};
use crate::pac::rcc::vals::{Hpre, Msirange, Pllsrc, Ppre, Sw};
use crate::pac::{FLASH, RCC};
use crate::rcc::{set_freqs, Clocks};
@ -71,30 +72,6 @@ pub enum PLLDiv {
Div4,
}
/// AHB prescaler
#[derive(Clone, Copy, PartialEq)]
pub enum AHBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
Div64,
Div128,
Div256,
Div512,
}
/// APB prescaler
#[derive(Clone, Copy)]
pub enum APBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
}
/// PLL clock input source
#[derive(Clone, Copy)]
pub enum PLLSource {
@ -202,34 +179,6 @@ impl From<PLLSource> for Pllsrc {
}
}
impl From<APBPrescaler> for Ppre {
fn from(val: APBPrescaler) -> Ppre {
match val {
APBPrescaler::NotDivided => Ppre::DIV1,
APBPrescaler::Div2 => Ppre::DIV2,
APBPrescaler::Div4 => Ppre::DIV4,
APBPrescaler::Div8 => Ppre::DIV8,
APBPrescaler::Div16 => Ppre::DIV16,
}
}
}
impl From<AHBPrescaler> for Hpre {
fn from(val: AHBPrescaler) -> Hpre {
match val {
AHBPrescaler::NotDivided => Hpre::DIV1,
AHBPrescaler::Div2 => Hpre::DIV2,
AHBPrescaler::Div4 => Hpre::DIV4,
AHBPrescaler::Div8 => Hpre::DIV8,
AHBPrescaler::Div16 => Hpre::DIV16,
AHBPrescaler::Div64 => Hpre::DIV64,
AHBPrescaler::Div128 => Hpre::DIV128,
AHBPrescaler::Div256 => Hpre::DIV256,
AHBPrescaler::Div512 => Hpre::DIV512,
}
}
}
impl From<MSIRange> for Msirange {
fn from(val: MSIRange) -> Msirange {
match val {

2
embassy-stm32/src/rcc/mod.rs
View File

@ -1,5 +1,7 @@
#![macro_use]
pub mod common;
use core::mem::MaybeUninit;
use crate::time::Hertz;

79
embassy-stm32/src/rcc/u5.rs
View File

@ -1,5 +1,6 @@
use stm32_metapac::rcc::vals::{Hpre, Msirange, Msirgsel, Pllm, Pllsrc, Ppre, Sw};
use stm32_metapac::rcc::vals::{Msirange, Msirgsel, Pllm, Pllsrc, Sw};
pub use super::common::{AHBPrescaler, APBPrescaler};
use crate::pac::{FLASH, RCC};
use crate::rcc::{set_freqs, Clocks};
use crate::time::Hertz;
@ -10,19 +11,7 @@ pub const HSI_FREQ: Hertz = Hertz(16_000_000);
/// LSI speed
pub const LSI_FREQ: Hertz = Hertz(32_000);
/// Voltage Scale
///
/// Represents the voltage range feeding the CPU core. The maximum core
/// clock frequency depends on this value.
#[derive(Copy, Clone, PartialEq)]
pub enum VoltageScale {
// Highest frequency
Range1,
Range2,
Range3,
// Lowest power
Range4,
}
pub use super::common::VoltageScale;
#[derive(Copy, Clone)]
pub enum ClockSrc {
@ -130,36 +119,6 @@ impl Into<Pllm> for PllM {
}
}
/// AHB prescaler
#[derive(Clone, Copy, PartialEq)]
pub enum AHBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
Div64,
Div128,
Div256,
Div512,
}
impl Into<Hpre> for AHBPrescaler {
fn into(self) -> Hpre {
match self {
AHBPrescaler::NotDivided => Hpre::NONE,
AHBPrescaler::Div2 => Hpre::DIV2,
AHBPrescaler::Div4 => Hpre::DIV4,
AHBPrescaler::Div8 => Hpre::DIV8,
AHBPrescaler::Div16 => Hpre::DIV16,
AHBPrescaler::Div64 => Hpre::DIV64,
AHBPrescaler::Div128 => Hpre::DIV128,
AHBPrescaler::Div256 => Hpre::DIV256,
AHBPrescaler::Div512 => Hpre::DIV512,
}
}
}
impl Into<u8> for AHBPrescaler {
fn into(self) -> u8 {
match self {
@ -182,28 +141,6 @@ impl Default for AHBPrescaler {
}
}
/// APB prescaler
#[derive(Clone, Copy)]
pub enum APBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
}
impl Into<Ppre> for APBPrescaler {
fn into(self) -> Ppre {
match self {
APBPrescaler::NotDivided => Ppre::NONE,
APBPrescaler::Div2 => Ppre::DIV2,
APBPrescaler::Div4 => Ppre::DIV4,
APBPrescaler::Div8 => Ppre::DIV8,
APBPrescaler::Div16 => Ppre::DIV16,
}
}
}
impl Default for APBPrescaler {
fn default() -> Self {
APBPrescaler::NotDivided
@ -389,12 +326,12 @@ pub(crate) unsafe fn init(config: Config) {
}
// TODO make configurable
let power_vos = VoltageScale::Range4;
let power_vos = VoltageScale::Scale3;
// states and programming delay
let wait_states = match power_vos {
// VOS 0 range VCORE 1.26V - 1.40V
VoltageScale::Range1 => {
VoltageScale::Scale0 => {
if sys_clk < 32_000_000 {
0
} else if sys_clk < 64_000_000 {
@ -408,7 +345,7 @@ pub(crate) unsafe fn init(config: Config) {
}
}
// VOS 1 range VCORE 1.15V - 1.26V
VoltageScale::Range2 => {
VoltageScale::Scale1 => {
if sys_clk < 30_000_000 {
0
} else if sys_clk < 60_000_000 {
@ -420,7 +357,7 @@ pub(crate) unsafe fn init(config: Config) {
}
}
// VOS 2 range VCORE 1.05V - 1.15V
VoltageScale::Range3 => {
VoltageScale::Scale2 => {
if sys_clk < 24_000_000 {
0
} else if sys_clk < 48_000_000 {
@ -430,7 +367,7 @@ pub(crate) unsafe fn init(config: Config) {
}
}
// VOS 3 range VCORE 0.95V - 1.05V
VoltageScale::Range4 => {
VoltageScale::Scale3 => {
if sys_clk < 12_000_000 {
0
} else {

63
embassy-stm32/src/rcc/wb.rs
View File

@ -1,3 +1,4 @@
pub use super::common::{AHBPrescaler, APBPrescaler};
use crate::rcc::Clocks;
use crate::time::{khz, mhz, Hertz};
@ -102,68 +103,6 @@ pub struct Pll {
pub divr: Option<u16>,
}
/// AHB prescaler
#[derive(Clone, Copy, PartialEq)]
pub enum AHBPrescaler {
NotDivided,
Div2,
Div3,
Div4,
Div5,
Div6,
Div8,
Div10,
Div16,
Div32,
Div64,
Div128,
Div256,
Div512,
}
/// APB prescaler
#[derive(Clone, Copy)]
pub enum APBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
}
impl Into<u8> for APBPrescaler {
fn into(self) -> u8 {
match self {
APBPrescaler::NotDivided => 1,
APBPrescaler::Div2 => 0x04,
APBPrescaler::Div4 => 0x05,
APBPrescaler::Div8 => 0x06,
APBPrescaler::Div16 => 0x07,
}
}
}
impl Into<u8> for AHBPrescaler {
fn into(self) -> u8 {
match self {
AHBPrescaler::NotDivided => 0x0,
AHBPrescaler::Div2 => 0x08,
AHBPrescaler::Div3 => 0x01,
AHBPrescaler::Div4 => 0x09,
AHBPrescaler::Div5 => 0x02,
AHBPrescaler::Div6 => 0x05,
AHBPrescaler::Div8 => 0x0a,
AHBPrescaler::Div10 => 0x06,
AHBPrescaler::Div16 => 0x0b,
AHBPrescaler::Div32 => 0x07,
AHBPrescaler::Div64 => 0x0c,
AHBPrescaler::Div128 => 0x0d,
AHBPrescaler::Div256 => 0x0e,
AHBPrescaler::Div512 => 0x0f,
}
}
}
/// Clocks configutation
pub struct Config {
pub hse: Option<Hse>,

85
embassy-stm32/src/rcc/wl.rs
View File

@ -1,3 +1,4 @@
pub use super::common::{AHBPrescaler, APBPrescaler, VoltageScale};
use crate::pac::pwr::vals::Dbp;
use crate::pac::{FLASH, PWR, RCC};
use crate::rcc::{set_freqs, Clocks};
@ -73,9 +74,9 @@ impl MSIRange {
fn vos(&self) -> VoltageScale {
if self > &MSIRange::Range8 {
VoltageScale::Range1
VoltageScale::Scale0
} else {
VoltageScale::Range2
VoltageScale::Scale1
}
}
}
@ -105,78 +106,6 @@ impl Into<u8> for MSIRange {
}
}
/// Voltage Scale
///
/// Represents the voltage range feeding the CPU core. The maximum core
/// clock frequency depends on this value.
#[derive(Copy, Clone, PartialEq)]
pub enum VoltageScale {
Range1,
Range2,
}
/// AHB prescaler
#[derive(Clone, Copy, PartialEq)]
pub enum AHBPrescaler {
NotDivided,
Div2,
Div3,
Div4,
Div5,
Div6,
Div8,
Div10,
Div16,
Div32,
Div64,
Div128,
Div256,
Div512,
}
/// APB prescaler
#[derive(Clone, Copy)]
pub enum APBPrescaler {
NotDivided,
Div2,
Div4,
Div8,
Div16,
}
impl Into<u8> for APBPrescaler {
fn into(self) -> u8 {
match self {
APBPrescaler::NotDivided => 1,
APBPrescaler::Div2 => 0x04,
APBPrescaler::Div4 => 0x05,
APBPrescaler::Div8 => 0x06,
APBPrescaler::Div16 => 0x07,
}
}
}
impl Into<u8> for AHBPrescaler {
fn into(self) -> u8 {
match self {
AHBPrescaler::NotDivided => 0x0,
AHBPrescaler::Div2 => 0x08,
AHBPrescaler::Div3 => 0x01,
AHBPrescaler::Div4 => 0x09,
AHBPrescaler::Div5 => 0x02,
AHBPrescaler::Div6 => 0x05,
AHBPrescaler::Div8 => 0x0a,
AHBPrescaler::Div10 => 0x06,
AHBPrescaler::Div16 => 0x0b,
AHBPrescaler::Div32 => 0x07,
AHBPrescaler::Div64 => 0x0c,
AHBPrescaler::Div128 => 0x0d,
AHBPrescaler::Div256 => 0x0e,
AHBPrescaler::Div512 => 0x0f,
}
}
}
/// Clocks configutation
pub struct Config {
pub mux: ClockSrc,
@ -220,8 +149,8 @@ pub enum Lsedrv {
pub(crate) unsafe fn init(config: Config) {
let (sys_clk, sw, vos) = match config.mux {
ClockSrc::HSI16 => (HSI_FREQ.0, 0x01, VoltageScale::Range2),
ClockSrc::HSE32 => (HSE32_FREQ.0, 0x02, VoltageScale::Range1),
ClockSrc::HSI16 => (HSI_FREQ.0, 0x01, VoltageScale::Scale1),
ClockSrc::HSE32 => (HSE32_FREQ.0, 0x02, VoltageScale::Scale0),
ClockSrc::MSI(range) => (range.freq(), 0x00, range.vos()),
};
@ -266,12 +195,12 @@ pub(crate) unsafe fn init(config: Config) {
// Adjust flash latency
let flash_clk_src_freq: u32 = shd_ahb_freq;
let ws = match vos {
VoltageScale::Range1 => match flash_clk_src_freq {
VoltageScale::Scale0 => match flash_clk_src_freq {
0..=18_000_000 => 0b000,
18_000_001..=36_000_000 => 0b001,
_ => 0b010,
},
VoltageScale::Range2 => match flash_clk_src_freq {
VoltageScale::Scale1 => match flash_clk_src_freq {
0..=6_000_000 => 0b000,
6_000_001..=12_000_000 => 0b001,
_ => 0b010,