int LedR = 3,LedG = 5,LedB = 6;  //Red LED 3, Green LED 5, Blue LED 6
int SW1 = 7, SW2 = 8, SW3 = 9;
int Red_Serial_cnt=0;
int Green_Serial_cnt=0;
int Blue_Serial_cnt=0;

void setup() {
  // put your setup code here, to run once:
  pinMode(LedR,OUTPUT);
  pinMode(LedG,OUTPUT);
  pinMode(LedB,OUTPUT);
  digitalWrite(LedR,HIGH);  
  digitalWrite(LedG,HIGH);
  digitalWrite(LedB,HIGH);
  pinMode(SW1,INPUT);
  pinMode(SW2,INPUT);
  pinMode(SW3,INPUT);
  Serial.begin(115200);
  Serial.print("Hello Arduino\n");
}

void loop() {
  // put your main code here, to run repeatedly:
  int sw1_val, sw2_val, sw3_val;
  
  sw1_val = digitalRead(SW1);
  sw2_val = digitalRead(SW2);
  sw3_val = digitalRead(SW3);
  //////////////////////////////////////////////////
  if(sw1_val == 1){
    digitalWrite(LedR,HIGH);
    if(Red_Serial_cnt == 0){
      Serial.print("SW1 OFF, Red LED OFF \n");
      Red_Serial_cnt++;
    }
  }
  else{
    digitalWrite(LedR,LOW);
    if(Red_Serial_cnt == 1){
      Serial.print("SW1 ON, Red LED ON \n");
      Red_Serial_cnt=0;
    }
  }
  ////////////////////////////////////////////////////////
  if(sw2_val == 1){
    digitalWrite(LedG,HIGH);
    if(Green_Serial_cnt == 0){
      Serial.print("SW2 OFF, Green LED OFF \n");
      Green_Serial_cnt++;
    }
  }
  else{
    digitalWrite(LedG,LOW);
    if(Green_Serial_cnt == 1){
      Serial.print("SW2 ON, Green LED ON \n");
      Green_Serial_cnt=0;
    }
  }
 //////////////////////////////////////////////////////// 
  if(sw3_val == 1){
    digitalWrite(LedB,HIGH);
    if(Blue_Serial_cnt == 0){
      Serial.print("SW3 OFF, Blue LED OFF \n");
      Blue_Serial_cnt++;
    }
  }
  else{
    digitalWrite(LedB,LOW);
    if(Blue_Serial_cnt == 1){
      Serial.print("SW3 ON, Blue LED ON \n");
      Blue_Serial_cnt=0;
    }
  }
}