#![no_std]
#![no_main]
use panic_halt as _;
use rp2040_hal as hal;
use hal::pac;
use core::fmt::Write;
use fugit::RateExtU32;
use rp2040_hal::clocks::Clock;
use hal::uart::{DataBits, StopBits, UartConfig};
#[link_section = ".boot2"]
#[used]
pub static BOOT2: [u8; 256] = rp2040_boot2::BOOT_LOADER_GENERIC_03H;
const XTAL_FREQ_HZ: u32 = 12_000_000u32;
#[rp2040_hal::entry]
fn main() -> ! {
let mut pac = pac::Peripherals::take().unwrap();
let core = pac::CorePeripherals::take().unwrap();
let mut watchdog = hal::Watchdog::new(pac.WATCHDOG);
let clocks = hal::clocks::init_clocks_and_plls(
XTAL_FREQ_HZ,
pac.XOSC,
pac.CLOCKS,
pac.PLL_SYS,
pac.PLL_USB,
&mut pac.RESETS,
&mut watchdog,
)
.ok()
.unwrap();
let mut delay = cortex_m::delay::Delay::new(core.SYST, clocks.system_clock.freq().to_Hz());
let sio = hal::Sio::new(pac.SIO);
let pins = hal::gpio::Pins::new(
pac.IO_BANK0,
pac.PADS_BANK0,
sio.gpio_bank0,
&mut pac.RESETS,
);
let uart_pins = (
pins.gpio0.into_mode::<hal::gpio::FunctionUart>(),
pins.gpio1.into_mode::<hal::gpio::FunctionUart>(),
);
let mut uart = hal::uart::UartPeripheral::new(pac.UART0, uart_pins, &mut pac.RESETS)
.enable(
UartConfig::new(9600.Hz(), DataBits::Eight, None, StopBits::One),
clocks.peripheral_clock.freq(),
)
.unwrap();
uart.write_full_blocking(b"UART example\r\n");
let mut value = 0u32;
loop {
writeln!(uart, "value: {:02}\r", value).unwrap();
delay.delay_ms(1000);
value += 1
}
}