//! Demonstrate the use of a blocking `Delay` using TIM2 general-purpose timer.
#![deny(unsafe_code)]
#![allow(clippy::empty_loop)]
#![no_main]
#![no_std]
// Halt on panic
use panic_halt as _; // panic handler
use cortex_m_rt::entry;
use stm32f1xx_hal as hal;
use crate::hal::{pac, prelude::*};
#[entry]
fn main() -> ! {
if let (Some(dp), Some(_cp)) = (
pac::Peripherals::take(),
cortex_m::peripheral::Peripherals::take(),
) {
let mut flash = dp.FLASH.constrain();
// Set up the LED. On the BluePill it's connected to pin PC13.
let mut gpioc = dp.GPIOC.split();
let mut led = gpioc.pc13.into_push_pull_output(&mut gpioc.crh);
// Set up the system clock. We want to run at 48MHz for this one.
let rcc = dp.RCC.constrain();
let clocks = rcc
.cfgr
.use_hse(8.MHz())
.sysclk(48.MHz())
.freeze(&mut flash.acr);
// Create a delay abstraction based on general-pupose 32-bit timer TIM2
//let mut delay = hal::timer::FTimerUs::new(dp.TIM2, &clocks).delay();
// or
let mut delay = dp.TIM2.delay_us(&clocks);
loop {
// On for 1s, off for 3s.
led.set_high();
// Use `embedded_hal::DelayMs` trait
delay.delay_ms(1000_u32);
led.set_low();
// or use `fugit` duration units
delay.delay(3.secs());
}
}
loop {}
}