Module f3::examples::_03_blinky [−][src]
Blinks an LED
#![deny(unsafe_code)] #![deny(warnings)] #![no_std] #![no_main] extern crate cortex_m; #[macro_use(entry, exception)] extern crate cortex_m_rt as rt; extern crate f3; extern crate panic_semihosting; use f3::hal::delay::Delay; use f3::hal::prelude::*; use f3::hal::stm32f30x; use f3::led::Led; use rt::ExceptionFrame; entry!(main); fn main() -> ! { let cp = cortex_m::Peripherals::take().unwrap(); let dp = stm32f30x::Peripherals::take().unwrap(); let mut flash = dp.FLASH.constrain(); let mut rcc = dp.RCC.constrain(); let mut gpioe = dp.GPIOE.split(&mut rcc.ahb); // clock configuration using the default settings (all clocks run at 8 MHz) let clocks = rcc.cfgr.freeze(&mut flash.acr); // TRY this alternate clock configuration (all clocks run at 16 MHz) // let clocks = rcc.cfgr.sysclk(16.mhz()).freeze(&mut flash.acr); let mut led: Led = gpioe .pe9 .into_push_pull_output(&mut gpioe.moder, &mut gpioe.otyper) .into(); let mut delay = Delay::new(cp.SYST, clocks); loop { led.on(); delay.delay_ms(1_000_u16); led.off(); delay.delay_ms(1_000_u16); } } exception!(HardFault, hard_fault); fn hard_fault(ef: &ExceptionFrame) -> ! { panic!("{:#?}", ef); } exception!(*, default_handler); fn default_handler(irqn: i16) { panic!("Unhandled exception (IRQn = {})", irqn); }