Page 186 - MDP2020-1

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<블루투스 제어>
#include <SoftwareSerial.h>

#define BT_RXD 8

#define BT_TXD 7
#define LED1 9
#define LED2 10
#define LED3 11

SoftwareSerial mySerial(BT_RXD, BT_TXD);
String myString="";

void setup(){
pinMode(LED1, OUTPUT);

pinMode(LED2, OUTPUT);
pinMode(LED3, OUTPUT);

Serial.begin(9600);

mySerial.begin(9600);
}

void loop(){
while(mySerial.available()) {
char myChar = (char)mySerial.read();

myString += myChar;
delay(5);
}

//받은 문자열 출력하기

if(!myString.equals("")) Serial.println("input value: "+myString);

//실행
if(myString == "a"){
digitalWrite(LED1, HIGH);

delay(500);
digitalWrite(LED1,LOW);
Serial.println("1층 LED 점등 완료.");
myString = "";
} else if(myString=="b"){

digitalWrite(LED2, HIGH);
delay(500);