ppproto 0.2.1

Point-to-Point Protocol (PPP) for embedded systems. `no-std` compatible, no alloc (heap) required.
Documentation 
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pub fn crc16(mut seed: u16, data: &[u8]) -> u16 {
    for &b in data {
        let e = seed as u8 ^ b;
        let f = e ^ (e << 4);
        let f = f as u16;
        seed = (seed >> 8) ^ (f << 8) ^ (f << 3) ^ (f >> 4);
    }
    seed
}