#![deny(unsafe_code)]
#![no_std]
#![no_main]
use panic_halt as _;
use nb::block;
use cortex_m_rt::entry;
use stm32f1xx_hal::{pac, prelude::*, timer::Timer};
#[entry]
fn main() -> ! {
let cp = cortex_m::Peripherals::take().unwrap();
let dp = pac::Peripherals::take().unwrap();
let mut flash = dp.FLASH.constrain();
let rcc = dp.RCC.constrain();
let clocks = rcc.cfgr.freeze(&mut flash.acr);
let mut gpioa = dp.GPIOA.split();
let mut gpioc = dp.GPIOC.split();
let mut timer = Timer::syst(cp.SYST, &clocks).counter_hz();
timer.start(1.Hz()).unwrap();
let mut leds = [
gpioc.pc13.into_push_pull_output(&mut gpioc.crh).erase(),
gpioa.pa1.into_push_pull_output(&mut gpioa.crl).erase(),
];
loop {
block!(timer.wait()).unwrap();
for led in leds.iter_mut() {
led.set_high();
}
block!(timer.wait()).unwrap();
for led in leds.iter_mut() {
led.set_low();
}
}
}