crc7 function

int crc7(List<int> bits)

CRC-7, polynomial x⁷ + x³ + 1 (0x09), MSB-first, init 0, over bits (each 0 or 1).

Implementation

int crc7(List<int> bits) {
  var crc = 0;
  for (final b in bits) {
    final top = ((crc >> 6) & 1) ^ b;
    crc = (crc << 1) & 0x7F;
    if (top == 1) crc ^= 0x09;
  }
  return crc;
}