Function northstarChecksum

arch/northstar/decoder.cc:58–70

Checksum is initially 0. * For each data byte, XOR with the current checksum. * Rotate checksum left, carrying bit 7 to bit 0. */

 * Rotate checksum left, carrying bit 7 to bit 0.
 */
uint8_t northstarChecksum(const Bytes& bytes)
{
    ByteReader br(bytes);
    uint8_t checksum = 0;

    while (!br.eof())
    {
        checksum ^= br.read_8();
        checksum = ((checksum << 1) | ((checksum >> 7)));
    }

    return checksum;
}

class NorthstarDecoder : public Decoder
{