#![deny(unsafe_code)]
#![no_std]
#![no_main]
use panic_halt as _;
use nb::block;
use cortex_m_rt::entry;
use cortex_m_semihosting::hprintln;
use embedded_hal::digital::v2::{InputPin, OutputPin};
use stm32f1xx_hal::{pac, prelude::*};
#[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 gpioc = dp.GPIOC.split();
let mut pin = gpioc.pc13.into_dynamic(&mut gpioc.crh);
let mut timer = cp.SYST.counter_hz(&clocks);
timer.start(1.Hz()).unwrap();
loop {
pin.make_floating_input(&mut gpioc.crh);
block!(timer.wait()).unwrap();
hprintln!("{}", pin.is_high().unwrap());
pin.make_push_pull_output(&mut gpioc.crh);
pin.set_high().unwrap();
block!(timer.wait()).unwrap();
pin.set_low().unwrap();
block!(timer.wait()).unwrap();
}
}