mirror of
https://github.com/italicsjenga/rp-hal-boards.git
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37e7d2e7b6
Crate names now have hyphens, to match rp2040-hal. Every BSP has its own CHANGELOG. Embassy stuff is removed (it blocks publishing on crates.io)
86 lines
2.1 KiB
Rust
86 lines
2.1 KiB
Rust
//! # GPIO 'Blinky' Example
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//!
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//! Blinks the LED on a Adafruit itsy-bitsy RP2040 board
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//!
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//! It may need to be adapted to your particular board layout and/or pin assignment.
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//!
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//! See the `Cargo.toml` file for Copyright and licence details.
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#![no_std]
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#![no_main]
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// The macro for our start-up function
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use cortex_m_rt::entry;
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// Ensure we halt the program on panic (if we don't mention this crate it won't
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// be linked)
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use panic_halt as _;
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// Some traits we need
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use embedded_hal::digital::v2::OutputPin;
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use embedded_time::fixed_point::FixedPoint;
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use itsy_bitsy_rp2040::{
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hal::{
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clocks::{init_clocks_and_plls, Clock},
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pac,
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sio::Sio,
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watchdog::Watchdog,
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},
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Pins, XOSC_CRYSTAL_FREQ,
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};
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use cortex_m::delay::Delay;
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/// Entry point to our bare-metal application.
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///
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/// The `#[entry]` macro ensures the Cortex-M start-up code calls this function
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/// as soon as all global variables are initialised.
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///
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/// The function configures the RP2040 peripherals, then toggles a GPIO pin in
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/// an infinite loop. If there is an LED connected to that pin, it will blink.
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#[entry]
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fn main() -> ! {
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// Grab our singleton objects
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let mut pac = pac::Peripherals::take().unwrap();
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let core = pac::CorePeripherals::take().unwrap();
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// Set up the watchdog driver - needed by the clock setup code
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let mut watchdog = Watchdog::new(pac.WATCHDOG);
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// Configure the clocks
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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 mut delay = Delay::new(core.SYST, clocks.system_clock.freq().integer());
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// The single-cycle I/O block controls our GPIO pins
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let sio = Sio::new(pac.SIO);
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let pins = 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.d13.into_push_pull_output();
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loop {
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led_pin.set_high().unwrap();
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delay.delay_ms(500);
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led_pin.set_low().unwrap();
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delay.delay_ms(500);
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}
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}
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// End of file
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