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#![no_std]
#![no_main]
use embassy_executor::Spawner;
use hal::config::Config;
use hal::crc::Crc;
use {defmt_rtt as _, embassy_mcxa as hal, panic_probe as _};
const CCITT_FALSE: crc::Algorithm<u16> = crc::Algorithm {
width: 16,
poly: 0x1021,
init: 0xffff,
refin: false,
refout: false,
xorout: 0,
check: 0x29b1,
residue: 0x0000,
};
const POSIX: crc::Algorithm<u32> = crc::Algorithm {
width: 32,
poly: 0x04c1_1db7,
init: 0,
refin: false,
refout: false,
xorout: 0xffff_ffff,
check: 0x765e_7680,
residue: 0x0000,
};
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let config = Config::default();
let mut p = hal::init(config);
defmt::info!("CRC example");
let buf_u8 = [0x00u8, 0x11, 0x22, 0x33];
let buf_u16 = [0x0000u16, 0x1111, 0x2222, 0x3333];
let buf_u32 = [0x0000_0000u32, 0x1111_1111, 0x2222_2222, 0x3333_3333];
// CCITT False
let sw_crc = crc::Crc::<u16>::new(&CCITT_FALSE);
let mut digest = sw_crc.digest();
digest.update(&buf_u8);
let sw_sum = digest.finalize();
let mut crc = Crc::new_ccitt_false(p.CRC0.reborrow());
crc.feed(&buf_u8);
let sum = crc.finalize();
assert_eq!(sum, sw_sum);
let mut crc = Crc::new_ccitt_false(p.CRC0.reborrow());
crc.feed(&buf_u16);
let sum = crc.finalize();
assert_eq!(sum, 0xa467);
let mut crc = Crc::new_ccitt_false(p.CRC0.reborrow());
crc.feed(&buf_u32);
let sum = crc.finalize();
assert_eq!(sum, 0xe5c7);
// Maxim
let sw_crc = crc::Crc::<u16>::new(&crc::CRC_16_MAXIM_DOW);
let mut digest = sw_crc.digest();
digest.update(&buf_u8);
let sw_sum = digest.finalize();
let mut crc = Crc::new_maxim(p.CRC0.reborrow());
crc.feed(&buf_u8);
let sum = crc.finalize();
assert_eq!(sum, sw_sum);
let mut crc = Crc::new_maxim(p.CRC0.reborrow());
crc.feed(&buf_u16);
let sum = crc.finalize();
assert_eq!(sum, 0x2afe);
let mut crc = Crc::new_maxim(p.CRC0.reborrow());
crc.feed(&buf_u32);
let sum = crc.finalize();
assert_eq!(sum, 0x17d7);
// Kermit
let sw_crc = crc::Crc::<u16>::new(&crc::CRC_16_KERMIT);
let mut digest = sw_crc.digest();
digest.update(&buf_u8);
let sw_sum = digest.finalize();
let mut crc = Crc::new_kermit(p.CRC0.reborrow());
crc.feed(&buf_u8);
let sum = crc.finalize();
assert_eq!(sum, sw_sum);
let mut crc = Crc::new_kermit(p.CRC0.reborrow());
crc.feed(&buf_u16);
let sum = crc.finalize();
assert_eq!(sum, 0x66eb);
let mut crc = Crc::new_kermit(p.CRC0.reborrow());
crc.feed(&buf_u32);
let sum = crc.finalize();
assert_eq!(sum, 0x75ea);
// ISO HDLC
let sw_crc = crc::Crc::<u32>::new(&crc::CRC_32_ISO_HDLC);
let mut digest = sw_crc.digest();
digest.update(&buf_u8);
let sw_sum = digest.finalize();
let mut crc = Crc::new_iso_hdlc(p.CRC0.reborrow());
crc.feed(&buf_u8);
let sum = crc.finalize();
assert_eq!(sum, sw_sum);
let mut crc = Crc::new_iso_hdlc(p.CRC0.reborrow());
crc.feed(&buf_u16);
let sum = crc.finalize();
assert_eq!(sum, 0x8a61_4178);
let mut crc = Crc::new_iso_hdlc(p.CRC0.reborrow());
crc.feed(&buf_u32);
let sum = crc.finalize();
assert_eq!(sum, 0xfab5_d04e);
// POSIX
let sw_crc = crc::Crc::<u32>::new(&POSIX);
let mut digest = sw_crc.digest();
digest.update(&buf_u8);
let sw_sum = digest.finalize();
let mut crc = Crc::new_posix(p.CRC0.reborrow());
crc.feed(&buf_u8);
let sum = crc.finalize();
assert_eq!(sum, sw_sum);
let mut crc = Crc::new_posix(p.CRC0.reborrow());
crc.feed(&buf_u16);
let sum = crc.finalize();
assert_eq!(sum, 0x6d76_4f58);
let mut crc = Crc::new_posix(p.CRC0.reborrow());
crc.feed(&buf_u32);
let sum = crc.finalize();
assert_eq!(sum, 0x2a5b_cb90);
defmt::info!("CRC successful");
}
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