#![no_std]
#![no_main]
use panic_halt as _;
use rp2040_hal as hal;
use hd44780_driver as hd44780;
use rp2040_hal::clocks::Clock;
use hal::pac;
#[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 mut lcd = hd44780::HD44780::new_4bit(
pins.gpio16.into_push_pull_output(), pins.gpio17.into_push_pull_output(), pins.gpio18.into_push_pull_output(), pins.gpio19.into_push_pull_output(), pins.gpio20.into_push_pull_output(), pins.gpio21.into_push_pull_output(), &mut delay,
)
.unwrap();
lcd.reset(&mut delay).unwrap();
lcd.clear(&mut delay).unwrap();
lcd.write_str("rp-hal on", &mut delay).unwrap();
lcd.set_cursor_pos(40, &mut delay).unwrap();
lcd.write_str("HD44780!", &mut delay).unwrap();
loop {
cortex_m::asm::wfi();
}
}