//Library ----------------------------------------------
#include <LiquidCrystal_I2C.h>
#include <Wire.h>
//------------------------------------------------------

//Define Pin -------------------------------------------
#define pinLed1 12
#define pinLed2 11
#define pinLed3 10
#define pinLed4 9
#define pinButton1 8
#define pinButton2 7
#define pinClock 6
#define pinData 5
#define pinLatch 4
#define pinClockLed 3
#define pinDataLed 2
#define pinLatchLed 13
//------------------------------------------------------

//Fungsi Macro -----------------------------------------
#define led1(x) digitalWrite(pinLed1, x)
#define led2(x) digitalWrite(pinLed2, x)
#define led3(x) digitalWrite(pinLed3, x)
#define led4(x) digitalWrite(pinLed4, x)

#define clockSeg(x) digitalWrite(pinClock, x)
#define dataSeg(x) digitalWrite(pinData, x)
#define latchSeg(x) digitalWrite(pinLatch, x)

#define clockLed(x) digitalWrite(pinClockLed, x)
#define dataLed(x) digitalWrite(pinDataLed, x)
#define latchLed(x) digitalWrite(pinLatchLed, x)

#define button1 digitalRead(pinButton1)
#define button2 digitalRead(pinButton2)
//------------------------------------------------------

//Set alamat I2C dan ukuran LCD ------------------------
LiquidCrystal_I2C lcd(0x27,16,2);
//------------------------------------------------------

//Variabel ---------------------------------------------
uint8_t arraySegment[10] = {
  0b00000011, //0
  0b10011111, //1
  0b00100101, //2
  0b00001101, //3
  0b10011001, //4
  0b01001001, //5
  0b01000001, //6
  0b00011111, //7
  0b00000001, //8
  0b00001001 //9
};

uint8_t menu = 0;
uint8_t dataButton1 = 0;
uint8_t dataButton2 = 0;
uint8_t k1 = 0;
uint8_t k2 = 0;

void setup(){
  pinMode(pinLed1, OUTPUT);
  pinMode(pinLed2, OUTPUT);
  pinMode(pinLed3, OUTPUT);
  pinMode(pinLed4, OUTPUT);
  pinMode(pinButton1, INPUT);
  pinMode(pinButton2, INPUT);
  pinMode(pinClock, OUTPUT);
  pinMode(pinData, OUTPUT);
  pinMode(pinLatch, OUTPUT);
  pinMode(pinClockLed, OUTPUT);
  pinMode(pinDataLed, OUTPUT);
  pinMode(pinLatchLed, OUTPUT);
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("SMKN 39 JAKARTA ");
  lcd.setCursor(0,1);
  lcd.print("  ELECTRONICS   ");
  delay(3000);
  lcd.clear();
}

void loop(){
  dataButton1 = button1;
  dataButton2 = button2;
  //button1
  if(dataButton1 == 1 && k1 == 0){
    k1 = 1;
  };
  if(dataButton1 == 0 && k1 == 1){
    //program apa yg mau dijakankan?
    menu++;
    if(menu > 4){
      menu = 1;
    };

    k1 = 0;
  };

  delay(50);

  switch(menu){
    case 1:
      //1
      shiftRegSeg(1);
    break;
    case 2:
      //2
      shiftRegSeg(2);
    break;
    case 3:
      //3
      shiftRegSeg(3);
    break;
    case 4:
      //4
      shiftRegSeg(4);
    break;
    default:

    break;
  };
}

void shiftRegSeg(uint8_t dataSeg){
  for(uint8_t i=0; i<8; i++){
    dataSeg((arraySegment[dataSeg]>>i)&1);
    clockSeg(0);
    clockSeg(1);
  };
  latchSeg(0);
  latchSeg(1);
}