ASCOM.cam8_v07.TECControl.crc8_block C# (CSharp) Метод

        private byte crc8_block(byte[] pcBlock, byte len)
        {
            byte crc = 0xFF;
            byte i, j;
            for (j = 0; j < len; j++)
            {
                crc ^= pcBlock[j];
                for (i = 0; i < 8; i++)
                    if ((crc & 0x80) != 0) crc = (byte)((crc << 1) ^ 0x31);
                    else crc = (byte)(crc << 1);
            }
            return crc;
        }