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rcc.rs
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rcc.rs
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#![deny(warnings)]
#![no_main]
#![no_std]
#[macro_use]
mod utilities;
use log::info;
use cortex_m_rt::entry;
use stm32h7xx_hal::{pac, prelude::*};
#[entry]
fn main() -> ! {
utilities::logger::init();
let dp = pac::Peripherals::take().unwrap();
// Constrain and Freeze power
info!("Setup PWR... ");
let pwr = dp.PWR.constrain();
let pwrcfg = example_power!(pwr).freeze();
// Constrain and Freeze clock
info!("Setup RCC... ");
let rcc = dp.RCC.constrain();
let ccdr = rcc.sys_ck(100.mhz()).freeze(pwrcfg, &dp.SYSCFG);
info!("");
info!("stm32h7xx-hal example - RCC");
info!("");
// HCLK
info!("hclk = {} MHz", ccdr.clocks.hclk().0 as f32 / 1e6);
assert_eq!(ccdr.clocks.hclk().0, 50_000_000);
// SYS_CK
info!("sys_ck = {} MHz", ccdr.clocks.sys_ck().0 as f32 / 1e6);
assert_eq!(ccdr.clocks.sys_ck().0, 100_000_000);
loop {
cortex_m::asm::nop()
}
}