EM4095 Arduino

void setup() {
  Serial.begin(9600);
}

void loop() {
  if (Serial.available() > 0) {
    char c = Serial.read();
    if (c == 'r') {
      byte temperature = ReadTemperature();
      byte data[11];
      byte check = 0x00;
      byte i = 0;
      for (i = 0; i < 4; i++) {
        data[i] = ReadPage(i);
        check ^= data[i];
      }
      data[4] = temperature;
      data[5] = 0x00;
      for (i = 6; i < 11; i++) {
        data[i] = ReadPage(i - 2);
        check ^= data[i];
      }
      Serial.write(data, 11);
      Serial.write(check);
    }
  }
}