#![no_std]
#![no_main]
use panic_halt as _;
use rp2040_hal as hal;
use embedded_hal_0_2::blocking::i2c::Write;
use hal::fugit::RateExtU32;
use hal::{
gpio::{FunctionI2C, Pin},
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 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,
)
.unwrap();
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 sda_pin: Pin<_, FunctionI2C, _> = pins.gpio18.reconfigure();
let scl_pin: Pin<_, FunctionI2C, _> = pins.gpio19.reconfigure();
let mut i2c = hal::I2C::i2c1(
pac.I2C1,
sda_pin,
scl_pin, 400.kHz(),
&mut pac.RESETS,
&clocks.system_clock,
);
i2c.write(0x2Cu8, &[1, 2, 3]).unwrap();
loop {
cortex_m::asm::wfi();
}
}