void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  byte data1 = 0;
  byte data2 = 0;
  uint16_t dataku = 0xffee;
  data1 = dataku/256;
  data2= dataku;
  Serial.print(data1,HEX);
  Serial.print(data2,HEX);
  byte data[32];
  data[0] = 1;
  Serial.println();
  Serial.println(sizeof(data));
}

void loop() {
  // put your main code here, to run repeatedly:
  
}