mirror of
https://github.com/italicsjenga/rp-hal-boards.git
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87 lines
2.4 KiB
Rust
87 lines
2.4 KiB
Rust
//! # Badger2040 Blinky Example
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//!
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//! Blinks the activity LED on a badger2040 board, using an RP2040 Timer in Count-down mode.
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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 pimoroni_badger2040::entry;
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// GPIO traits
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use embedded_hal::digital::v2::OutputPin;
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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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// A shorter alias for the Peripheral Access Crate, which provides low-level
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// register access
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use pimoroni_badger2040::hal::pac;
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use pimoroni_badger2040::hal::Timer;
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// A shorter alias for the Hardware Abstraction Layer, which provides
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// higher-level drivers.
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use pimoroni_badger2040::hal;
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// A few traits required for using the CountDown timer
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use embedded_hal::timer::CountDown;
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use fugit::ExtU32;
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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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// Set up the watchdog driver - needed by the clock setup code
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let mut watchdog = hal::Watchdog::new(pac.WATCHDOG);
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// Configure the clocks
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//
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// The default is to generate a 125 MHz system clock
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let _clocks = hal::clocks::init_clocks_and_plls(
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pimoroni_badger2040::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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// The single-cycle I/O block controls our GPIO pins
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let sio = hal::Sio::new(pac.SIO);
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// Set the pins up according to their function on this particular board
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let pins = pimoroni_badger2040::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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// Configure the timer peripheral to be a CountDown timer for our blinky delay
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let timer = Timer::new(pac.TIMER, &mut pac.RESETS);
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let mut delay = timer.count_down();
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// Set the LED to be an output
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let mut led_pin = pins.led.into_push_pull_output();
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// Blink the LED at 1 Hz
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loop {
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// LED on, and wait for 500ms
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led_pin.set_high().unwrap();
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delay.start(500.millis());
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let _ = nb::block!(delay.wait());
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// LED off, and wait for 500ms
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led_pin.set_low().unwrap();
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delay.start(500.millis());
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let _ = nb::block!(delay.wait());
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}
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}
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