// CRC 校验模块

// 计算数据包的 CRC 校验值
function calculateCRC(dataPacket) {
  let sum = 0;
  for (let i = 0; i < 15; i++) {
    sum += dataPacket[i];
  }
  return sum & 0xFF;  // 取最低8位
}

// 校验CRC值
function validateCRC(dataPacket) {
  const receivedCRC = dataPacket[15];
  const calculatedCRC = calculateCRC(dataPacket);
  return receivedCRC === calculatedCRC;
}

module.exports = {
  calculateCRC,
  validateCRC
};