diff --git a/embassy-stm32/src/adc/v3.rs b/embassy-stm32/src/adc/v3.rs index 7d63b0cee..011ecc281 100644 --- a/embassy-stm32/src/adc/v3.rs +++ b/embassy-stm32/src/adc/v3.rs @@ -13,7 +13,7 @@ pub const VREF_CALIB_MV: u32 = 3000; /// configuration. fn enable() { critical_section::with(|_| { - #[cfg(stm32h7)] + #[cfg(any(stm32h7, stm32wl))] crate::pac::RCC.apb2enr().modify(|w| w.set_adcen(true)); #[cfg(stm32g0)] crate::pac::RCC.apbenr2().modify(|w| w.set_adcen(true)); diff --git a/embassy-stm32/src/rcc/wl.rs b/embassy-stm32/src/rcc/wl.rs index e33690d10..47be00ad8 100644 --- a/embassy-stm32/src/rcc/wl.rs +++ b/embassy-stm32/src/rcc/wl.rs @@ -1,4 +1,5 @@ pub use super::bus::{AHBPrescaler, APBPrescaler, VoltageScale}; +use crate::pac::rcc::vals::Adcsel; use crate::pac::{FLASH, PWR, RCC}; use crate::rcc::bd::{BackupDomain, RtcClockSource}; use crate::rcc::{set_freqs, Clocks}; @@ -106,6 +107,29 @@ impl Into for MSIRange { } } +#[derive(Clone, Copy)] +pub enum AdcClockSource { + HSI16, + PLLPCLK, + SYSCLK, +} + +impl AdcClockSource { + pub fn adcsel(&self) -> Adcsel { + match self { + AdcClockSource::HSI16 => Adcsel::HSI16, + AdcClockSource::PLLPCLK => Adcsel::PLLPCLK, + AdcClockSource::SYSCLK => Adcsel::SYSCLK, + } + } +} + +impl Default for AdcClockSource { + fn default() -> Self { + Self::HSI16 + } +} + /// Clocks configutation pub struct Config { pub mux: ClockSrc, @@ -116,6 +140,7 @@ pub struct Config { pub enable_lsi: bool, pub enable_rtc_apb: bool, pub rtc_mux: RtcClockSource, + pub adc_clock_source: AdcClockSource, } impl Default for Config { @@ -130,6 +155,7 @@ impl Default for Config { enable_lsi: false, enable_rtc_apb: false, rtc_mux: RtcClockSource::LSI, + adc_clock_source: AdcClockSource::default(), } } } @@ -299,6 +325,9 @@ pub(crate) unsafe fn init(config: Config) { w.set_ppre2(config.apb2_pre.into()); }); + // ADC clock MUX + RCC.ccipr().modify(|w| w.set_adcsel(config.adc_clock_source.adcsel())); + // TODO: switch voltage range if config.enable_lsi {