#![deny(warnings)]
#![no_main]
#![no_std]
use cortex_m_rt::entry;
#[macro_use]
mod utilities;
use stm32h7xx_hal::{pac, prelude::*};
use log::info;
use nb::block;
#[entry]
fn main() -> ! {
utilities::logger::init();
let dp = pac::Peripherals::take().expect("Cannot take peripherals");
info!("Setup PWR... ");
let pwr = dp.PWR.constrain();
let pwrcfg = example_power!(pwr).freeze();
info!("Setup RCC... ");
let rcc = dp.RCC.constrain();
let ccdr = rcc
.sys_ck(100.MHz())
.pll1_q_ck(20_480.kHz()) .freeze(pwrcfg, &dp.SYSCFG);
let gpioc = dp.GPIOC.split(ccdr.peripheral.GPIOC);
let gpioe = dp.GPIOE.split(ccdr.peripheral.GPIOE);
let d1 = gpioc.pc1.into_alternate();
let ck1 = gpioe.pe2.into_alternate();
let pins = (ck1, d1);
info!("");
info!("stm32h7xx-hal example - SAI PDM");
info!("");
let mut sai =
dp.SAI1
.pdm(pins, 1_024.kHz(), ccdr.peripheral.SAI1, &ccdr.clocks);
loop {
info!("0x{:04x}", 0xFFFF & block!(sai.read_data()).unwrap());
}
}