mirror of
https://github.com/italicsjenga/rp-hal-boards.git
synced 2024-12-25 21:41:31 +11:00
62 lines
1.5 KiB
Rust
62 lines
1.5 KiB
Rust
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//! Blinks the LED on a Pico board
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//!
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//! This will blink an LED attached to GP25, which is the pin the Pico uses for the on-board LED.
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#![no_std]
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#![no_main]
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use cortex_m::prelude::_embedded_hal_timer_CountDown;
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use cortex_m_rt::entry;
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use embedded_hal::digital::v2::OutputPin;
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use embedded_time::duration::Extensions;
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use panic_halt as _;
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use pico::{
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hal::{self as hal, clocks::init_clocks_and_plls, pac, sio::Sio, watchdog::Watchdog},
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XOSC_CRYSTAL_FREQ,
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};
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#[link_section = ".boot2"]
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#[used]
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pub static BOOT2: [u8; 256] = rp2040_boot2::BOOT_LOADER;
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#[entry]
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fn main() -> ! {
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let mut pac = pac::Peripherals::take().unwrap();
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let mut watchdog = Watchdog::new(pac.WATCHDOG);
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let _clocks = init_clocks_and_plls(
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XOSC_CRYSTAL_FREQ,
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pac.XOSC,
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pac.CLOCKS,
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pac.PLL_SYS,
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pac.PLL_USB,
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&mut pac.RESETS,
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&mut watchdog,
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)
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.ok()
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.unwrap();
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let timer = hal::timer::Timer::new(pac.TIMER);
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let mut count_down = timer.count_down();
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let sio = Sio::new(pac.SIO);
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let pins = hal::gpio::Pins::new(
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pac.IO_BANK0,
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pac.PADS_BANK0,
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sio.gpio_bank0,
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&mut pac.RESETS,
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);
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let mut led_pin = pins.gpio25.into_push_pull_output();
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loop {
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led_pin.set_high().unwrap();
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// wait for 500ms
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count_down.start(500.milliseconds());
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let _ = nb::block!(count_down.wait());
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led_pin.set_low().unwrap();
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// wait for 500ms
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count_down.start(500.milliseconds());
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let _ = nb::block!(count_down.wait());
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}
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}
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