IoT 아두이노 0519 - 프로젝트 with 주석

//Pin number declaration
int pin_PIEZO = 12; //Buzz +
int pin_LED[3] = {0,1,2}; //RGB LED +
int pin_SW = 7; //Switch +
int pin_GND1 = 3; //RGB LED -
int pin_GND2 = 8; //Switch -
int scale_data[9] = {-255,130,146,164,174,195,220,246,261}; //Buzz Soundnum

//Set Input and Output
void setup(){
pinMode(pin_PIEZO, OUTPUT); //Set to Buzz Output
pinMode(pin_SW,INPUT_PULLUP); //Set to Switch Intput, LOW = ON , HIGH = OFF
pinMode(pin_LED[0], OUTPUT); //Set to RED Output
pinMode(pin_LED[1], OUTPUT); //Set to GREEN Output
pinMode(pin_LED[2], OUTPUT); //Set to BLUE Output
pinMode(pin_GND1, OUTPUT); digitalWrite(pin_GND1, LOW); // RGB LED - Set to Ground value
pinMode(pin_GND2, OUTPUT); digitalWrite(pin_GND2, LOW); //Switch - Set to Ground value
}

//Set RGB LED Control
void LED_control(uint8_t da)
{
  digitalWrite(pin_LED[0], da & 0x01);
  da >>= 1;
  digitalWrite(pin_LED[1], da & 0x01);
  da >>= 1;
  digitalWrite(pin_LED[2], da & 0x01);
}

//Set RGB LED - Color Name
#define OFF 0
#define RED 0x01
#define GREEN 0x02
#define BLUE 0x04

//Program Loop
void loop(){
  //digitalRead(pin_SW) -> Read Switch Digital Signal
  //When pin_SW is turn ON.
  if(digitalRead(pin_SW) == LOW)
  {
    //RGB LED In turn
    LED_control(RED);delay(1000); LED_control(GREEN);delay(1000); LED_control(BLUE);delay(1000);LED_control(0);delay(1000);
    //Song : Mary had a little lamb
    //tone(pin_PIEZO, scale_date[num];dealay(sec);noTone(pin_PIEZO);delay(125);LED_control(num);
    tone(pin_PIEZO, scale_data[3]);delay(125);noTone(pin_PIEZO);delay(125);LED_control(RED);
    tone(pin_PIEZO, scale_data[2]);delay(125);noTone(pin_PIEZO);delay(125);LED_control(GREEN);
    tone(pin_PIEZO, scale_data[1]);delay(125);noTone(pin_PIEZO);delay(125);LED_control(BLUE);
    tone(pin_PIEZO, scale_data[2]);delay(125);noTone(pin_PIEZO);delay(125);LED_control(RED);
    tone(pin_PIEZO, scale_data[3]);delay(125);noTone(pin_PIEZO);delay(125);LED_control(GREEN);
    tone(pin_PIEZO, scale_data[3]);delay(125);noTone(pin_PIEZO);delay(125);LED_control(BLUE);
    tone(pin_PIEZO, scale_data[3]);delay(250);noTone(pin_PIEZO);delay(250);LED_control(RED);
    tone(pin_PIEZO, scale_data[2]);delay(125);noTone(pin_PIEZO);delay(125);LED_control(GREEN);
    tone(pin_PIEZO, scale_data[2]);delay(125);noTone(pin_PIEZO);delay(125);LED_control(BLUE);
    tone(pin_PIEZO, scale_data[2]);delay(250);noTone(pin_PIEZO);delay(250);LED_control(RED);
    tone(pin_PIEZO, scale_data[3]);delay(125);noTone(pin_PIEZO);delay(125);LED_control(GREEN);
    tone(pin_PIEZO, scale_data[5]);delay(125);noTone(pin_PIEZO);delay(125);LED_control(BLUE);
    tone(pin_PIEZO, scale_data[5]);delay(250);noTone(pin_PIEZO);delay(250);LED_control(RED);
    tone(pin_PIEZO, scale_data[3]);delay(187.5);noTone(pin_PIEZO);delay(187.5);LED_control(GREEN);
    tone(pin_PIEZO, scale_data[2]);delay(62.5);noTone(pin_PIEZO);delay(62.5);LED_control(BLUE);
    tone(pin_PIEZO, scale_data[1]);delay(125);noTone(pin_PIEZO);delay(125);LED_control(RED);
    tone(pin_PIEZO, scale_data[2]);delay(125);noTone(pin_PIEZO);delay(125);LED_control(GREEN);
    tone(pin_PIEZO, scale_data[3]);delay(125);noTone(pin_PIEZO);delay(125);LED_control(BLUE);
    tone(pin_PIEZO, scale_data[3]);delay(125);noTone(pin_PIEZO);delay(125);LED_control(RED);
    tone(pin_PIEZO, scale_data[3]);delay(250);noTone(pin_PIEZO);delay(250);LED_control(GREEN);
    tone(pin_PIEZO, scale_data[2]);delay(125);noTone(pin_PIEZO);delay(125);LED_control(BLUE);
    tone(pin_PIEZO, scale_data[2]);delay(125);noTone(pin_PIEZO);delay(125);LED_control(RED);
    tone(pin_PIEZO, scale_data[3]);delay(187.5);noTone(pin_PIEZO);delay(187.5);LED_control(GREEN);
    tone(pin_PIEZO, scale_data[2]);delay(62.5);noTone(pin_PIEZO);delay(62.5); LED_control(BLUE);
    tone(pin_PIEZO, scale_data[1]);delay(500);noTone(pin_PIEZO);delay(500);LED_control(0);
  }
  //When pin_SW is turn OFF.
  else{
    digitalWrite(pin_LED, LOW);
    digitalWrite(pin_PIEZO, LOW);
  }
}