/*
   Serial
   串口通讯实验
*/
int incomedate = 0;
void setup() {

  Serial.begin(115200); //设置串口波特率115200

  Serial.println(78, BIN);// "1001110"
  Serial.println(78, OCT);// "116"
  Serial.println(78, DEC);// "78"
  Serial.println(78, HEX);// "4E"
  Serial.println(1.23456, 0);// "1"
  Serial.println(1.23456, 2);// "1.23"
  Serial.println(1.23456, 4);// "1.2346"
  Serial.println('N');// "N"
  Serial.println("Hello world.");// "Hello world."
}
void loop() {

  if (Serial.available() > 0)//串口接收到数据
  {
    incomedate = Serial.read();//获取串口接收到的数据
    if (incomedate == 'H')
    {
      Serial.println("I am OK!");
    }
  }
  delay(1000);
}