250 lines
6.4 KiB
Rust
250 lines
6.4 KiB
Rust
#![macro_use]
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use core::mem::MaybeUninit;
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use crate::time::Hertz;
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mod bd;
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mod mco;
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pub use bd::*;
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pub use mco::*;
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#[cfg_attr(rcc_f0, path = "f0.rs")]
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#[cfg_attr(any(rcc_f1, rcc_f100, rcc_f1cl), path = "f1.rs")]
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#[cfg_attr(rcc_f2, path = "f2.rs")]
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#[cfg_attr(any(rcc_f3, rcc_f3_v2), path = "f3.rs")]
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#[cfg_attr(any(rcc_f4, rcc_f410, rcc_f7), path = "f4f7.rs")]
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#[cfg_attr(rcc_c0, path = "c0.rs")]
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#[cfg_attr(rcc_g0, path = "g0.rs")]
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#[cfg_attr(rcc_g4, path = "g4.rs")]
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#[cfg_attr(any(rcc_h5, rcc_h50, rcc_h7, rcc_h7rm0433, rcc_h7ab), path = "h.rs")]
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#[cfg_attr(any(rcc_l0, rcc_l0_v2, rcc_l1), path = "l0l1.rs")]
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#[cfg_attr(any(rcc_l4, rcc_l4plus, rcc_l5, rcc_wl5, rcc_wle), path = "l4l5.rs")]
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#[cfg_attr(rcc_u5, path = "u5.rs")]
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#[cfg_attr(rcc_wb, path = "wb.rs")]
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#[cfg_attr(rcc_wba, path = "wba.rs")]
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mod _version;
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#[cfg(feature = "low-power")]
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use core::sync::atomic::{AtomicU32, Ordering};
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pub use _version::*;
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// Model Clock Configuration
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//
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// pub struct Clocks {
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// hse: Option<Hertz>,
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// hsi: bool,
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// lse: Option<Hertz>,
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// lsi: bool,
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// rtc: RtcSource,
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// }
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#[derive(Clone, Copy, Debug)]
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#[cfg_attr(feature = "defmt", derive(defmt::Format))]
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pub struct Clocks {
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pub sys: Hertz,
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// APB
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pub pclk1: Hertz,
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pub pclk1_tim: Hertz,
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#[cfg(not(any(rcc_c0, rcc_g0)))]
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pub pclk2: Hertz,
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#[cfg(not(any(rcc_c0, rcc_g0)))]
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pub pclk2_tim: Hertz,
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#[cfg(any(rcc_wl5, rcc_wle, rcc_h5, rcc_h50, rcc_h7, rcc_h7rm0433, rcc_h7ab, rcc_u5))]
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pub pclk3: Hertz,
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#[cfg(any(rcc_h7, rcc_h7rm0433, rcc_h7ab, stm32h5))]
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pub pclk4: Hertz,
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#[cfg(any(rcc_wba))]
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pub pclk7: Hertz,
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// AHB
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pub hclk1: Hertz,
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#[cfg(any(
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rcc_l4,
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rcc_l4plus,
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rcc_l5,
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rcc_f2,
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rcc_f4,
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rcc_f410,
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rcc_f7,
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rcc_h5,
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rcc_h50,
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rcc_h7,
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rcc_h7rm0433,
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rcc_h7ab,
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rcc_g4,
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rcc_u5,
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rcc_wb,
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rcc_wba,
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rcc_wl5,
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rcc_wle
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))]
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pub hclk2: Hertz,
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#[cfg(any(
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rcc_l4,
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rcc_l4plus,
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rcc_l5,
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rcc_f2,
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rcc_f4,
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rcc_f410,
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rcc_f7,
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rcc_h5,
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rcc_h50,
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rcc_h7,
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rcc_h7rm0433,
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rcc_h7ab,
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rcc_u5,
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rcc_wb,
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rcc_wl5,
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rcc_wle
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))]
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pub hclk3: Hertz,
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#[cfg(any(rcc_h5, rcc_h50, rcc_h7, rcc_h7rm0433, rcc_h7ab, rcc_wba))]
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pub hclk4: Hertz,
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#[cfg(all(rcc_f4, not(stm32f410)))]
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pub plli2s1_q: Option<Hertz>,
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#[cfg(all(rcc_f4, not(stm32f410)))]
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pub plli2s1_r: Option<Hertz>,
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#[cfg(rcc_l4)]
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pub pllsai1_p: Option<Hertz>,
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#[cfg(any(stm32f427, stm32f429, stm32f437, stm32f439, stm32f446, stm32f469, stm32f479))]
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pub pllsai1_q: Option<Hertz>,
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#[cfg(any(stm32f427, stm32f429, stm32f437, stm32f439, stm32f446, stm32f469, stm32f479))]
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pub pllsai1_r: Option<Hertz>,
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#[cfg(rcc_l4)]
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pub pllsai2_p: Option<Hertz>,
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#[cfg(any(stm32g4, rcc_l4))]
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pub pll1_p: Option<Hertz>,
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#[cfg(any(stm32h5, stm32h7, rcc_f2, rcc_f4, rcc_f410, rcc_f7, rcc_l4))]
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pub pll1_q: Option<Hertz>,
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#[cfg(any(stm32h5, stm32h7))]
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pub pll2_p: Option<Hertz>,
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#[cfg(any(stm32h5, stm32h7))]
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pub pll2_q: Option<Hertz>,
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#[cfg(any(stm32h5, stm32h7))]
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pub pll2_r: Option<Hertz>,
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#[cfg(any(stm32h5, stm32h7))]
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pub pll3_p: Option<Hertz>,
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#[cfg(any(stm32h5, stm32h7))]
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pub pll3_q: Option<Hertz>,
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#[cfg(any(stm32h5, stm32h7))]
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pub pll3_r: Option<Hertz>,
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#[cfg(any(
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rcc_f1,
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rcc_f100,
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rcc_f1cl,
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rcc_h5,
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rcc_h50,
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rcc_h7,
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rcc_h7rm0433,
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rcc_h7ab,
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rcc_f3,
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rcc_g4
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))]
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pub adc: Option<Hertz>,
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#[cfg(any(rcc_f3, rcc_g4))]
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pub adc34: Option<Hertz>,
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#[cfg(stm32f334)]
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pub hrtim: Option<Hertz>,
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pub rtc: Option<Hertz>,
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#[cfg(any(stm32h5, stm32h7, rcc_l4, rcc_c0))]
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pub hsi: Option<Hertz>,
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#[cfg(stm32h5)]
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pub hsi48: Option<Hertz>,
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#[cfg(stm32h5)]
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pub lsi: Option<Hertz>,
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#[cfg(any(stm32h5, stm32h7))]
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pub csi: Option<Hertz>,
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#[cfg(any(stm32h5, stm32h7, rcc_l4, rcc_c0))]
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pub lse: Option<Hertz>,
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#[cfg(any(stm32h5, stm32h7))]
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pub hse: Option<Hertz>,
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#[cfg(stm32h5)]
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pub audioclk: Option<Hertz>,
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#[cfg(any(stm32h5, stm32h7))]
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pub per: Option<Hertz>,
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#[cfg(stm32h7)]
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pub rcc_pclk_d3: Option<Hertz>,
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#[cfg(rcc_l4)]
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pub sai1_extclk: Option<Hertz>,
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#[cfg(rcc_l4)]
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pub sai2_extclk: Option<Hertz>,
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}
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#[cfg(feature = "low-power")]
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static CLOCK_REFCOUNT: AtomicU32 = AtomicU32::new(0);
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#[cfg(feature = "low-power")]
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pub fn low_power_ready() -> bool {
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// trace!("clock refcount: {}", CLOCK_REFCOUNT.load(Ordering::SeqCst));
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CLOCK_REFCOUNT.load(Ordering::SeqCst) == 0
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}
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#[cfg(feature = "low-power")]
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pub(crate) fn clock_refcount_add(_cs: critical_section::CriticalSection) {
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// We don't check for overflow because constructing more than u32 peripherals is unlikely
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let n = CLOCK_REFCOUNT.load(Ordering::Relaxed);
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CLOCK_REFCOUNT.store(n + 1, Ordering::Relaxed);
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}
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#[cfg(feature = "low-power")]
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pub(crate) fn clock_refcount_sub(_cs: critical_section::CriticalSection) {
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let n = CLOCK_REFCOUNT.load(Ordering::Relaxed);
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assert!(n != 0);
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CLOCK_REFCOUNT.store(n - 1, Ordering::Relaxed);
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}
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/// Frozen clock frequencies
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///
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/// The existence of this value indicates that the clock configuration can no longer be changed
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static mut CLOCK_FREQS: MaybeUninit<Clocks> = MaybeUninit::uninit();
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/// Sets the clock frequencies
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///
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/// Safety: Sets a mutable global.
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pub(crate) unsafe fn set_freqs(freqs: Clocks) {
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debug!("rcc: {:?}", freqs);
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CLOCK_FREQS = MaybeUninit::new(freqs);
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}
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/// Safety: Reads a mutable global.
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pub(crate) unsafe fn get_freqs() -> &'static Clocks {
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CLOCK_FREQS.assume_init_ref()
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}
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#[cfg(feature = "unstable-pac")]
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pub mod low_level {
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pub use super::sealed::*;
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}
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pub(crate) mod sealed {
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use critical_section::CriticalSection;
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pub trait RccPeripheral {
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fn frequency() -> crate::time::Hertz;
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fn enable_and_reset_with_cs(cs: CriticalSection);
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fn disable_with_cs(cs: CriticalSection);
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fn enable_and_reset() {
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critical_section::with(|cs| Self::enable_and_reset_with_cs(cs))
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}
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fn disable() {
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critical_section::with(|cs| Self::disable_with_cs(cs))
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}
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}
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}
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pub trait RccPeripheral: sealed::RccPeripheral + 'static {}
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