#![no_std]
#![no_main]
use panic_halt as _;
use rp2040_hal as hal;
use cortex_m::prelude::*;
use fugit::RateExtU32;
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 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 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 _spi_sclk = pins.gpio6.into_mode::<hal::gpio::FunctionSpi>();
let _spi_mosi = pins.gpio7.into_mode::<hal::gpio::FunctionSpi>();
let _spi_miso = pins.gpio4.into_mode::<hal::gpio::FunctionSpi>();
let spi = hal::Spi::<_, _, 8>::new(pac.SPI0);
let mut spi = spi.init(
&mut pac.RESETS,
clocks.peripheral_clock.freq(),
16.MHz(),
&embedded_hal::spi::MODE_0,
);
if spi.write(&[0]).is_ok() {
};
let send_success = spi.send(50);
match send_success {
Ok(_) => {
if let Ok(_x) = spi.read() {
};
}
Err(_) => todo!(),
}
let mut buffer: [u8; 4] = [1, 2, 3, 4];
let transfer_success = spi.transfer(&mut buffer);
#[allow(clippy::single_match)]
match transfer_success {
Ok(_) => {} Err(_) => {} };
loop {
cortex_m::asm::wfi();
}
}