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Add minimal RCC impls for L4 and F4

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This commit is contained in:
Ulf Lilleengen
2021-06-14 10:48:14 +02:00
parent a13e07625f
commit 95532726b2
9 changed files with 455 additions and 137 deletions
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26
embassy-stm32/src/rcc/h7/mod.rs
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@ -6,22 +6,13 @@ use crate::pac::rcc::vals::Timpre;
use crate::pac::{DBGMCU, RCC, SYSCFG};
use crate::peripherals;
use crate::pwr::{Power, VoltageScale};
use crate::rcc::{set_freqs, Clocks};
use crate::time::Hertz;
mod pll;
use pll::pll_setup;
pub use pll::PllConfig;
// Clock type used by peripherals
#[derive(Clone, Copy)]
pub struct Clocks {
pub apb1: Hertz,
pub apb2: Hertz,
pub apb4: Hertz,
pub ahb2: Hertz,
pub c1: Hertz,
}
const HSI: Hertz = Hertz(64_000_000);
const CSI: Hertz = Hertz(4_000_000);
const HSI48: Hertz = Hertz(48_000_000);
@ -532,5 +523,16 @@ impl<'d> Rcc<'d> {
}
}
// TODO
pub unsafe fn init(_config: Config) {}
pub unsafe fn init(config: Config) {
let mut power = Power::new(<peripherals::PWR as embassy::util::Steal>::steal(), false);
let rcc = Rcc::new(<peripherals::RCC as embassy::util::Steal>::steal(), config);
let core_clocks = rcc.freeze(&mut power);
set_freqs(Clocks {
sys: core_clocks.c_ck,
ahb1: core_clocks.hclk,
ahb2: core_clocks.hclk,
apb1: core_clocks.pclk1,
apb2: core_clocks.pclk2,
apb4: core_clocks.pclk4,
});
}