const int SIG = 5;// SIG pin  
const int EN = 10;// Enable pin 
const int controlPin[4] = {9, 8, 7, 6}; // 4 pins used  for binary output

int loopDelay = 100;// delay in loop

const int muxTable[16][4] = {
  // s0, s1, s2, s3     channel
    {0,  0,  0,  0}, // 0
    {1,  0,  0,  0}, // 1
    {0,  1,  0,  0}, // 2
    {1,  1,  0,  0}, // 3
    {0,  0,  1,  0}, // 4
    {1,  0,  1,  0}, // 5
    {0,  1,  1,  0}, // 6
    {1,  1,  1,  0}, // 7
    {0,  0,  0,  1}, // 8
    {1,  0,  0,  1}, // 9
    {0,  1,  0,  1}, // 10
    {1,  1,  0,  1}, // 11
    {0,  0,  1,  1}, // 12
    {1,  0,  1,  1}, // 13
    {0,  1,  1,  1}, // 14
    {1,  1,  1,  1}  // 15
};

void setup() {
  for(int i=0; i<4; i++)
  {
    pinMode(controlPin[i], OUTPUT);// set pin as output
    digitalWrite(controlPin[i], HIGH); // set initial state as HIGH     
  }
  pinMode(SIG, OUTPUT);// set SIG pin as output
  digitalWrite(SIG, HIGH); // set SIG sends what should be the output
                          // for low trigger relay it should be LOW
                          // for HIGH trigger high it should be HIGH 

  pinMode(EN, OUTPUT);// set EN pin as output
  digitalWrite(EN, LOW); // set EN in (enable pin) Low to activate the chip   
}

void loop() {
//   for(int i=0; i<16; i++)
//   {
    channelControl(1);
    channelControl(5);
//     delay(loopDelay);// wait for loopDelay ms
//   }
// ledChaserFastWave();
}

void channelControl(int relayChannel)
{
    digitalWrite(controlPin[0], muxTable[relayChannel][0]);
    digitalWrite(controlPin[1], muxTable[relayChannel][1]);
    digitalWrite(controlPin[2], muxTable[relayChannel][2]);
    digitalWrite(controlPin[3], muxTable[relayChannel][3]);
}//channelControl end

void ledChaserFastWave() {
  // Maju cepat
  for (int i = 0; i < 16; i++) {
    channelControl(i);
    delay(50); // Delay pendek untuk efek chaser cepat
  }
  
  // Mundur cepat
  for (int i = 14; i >= 0; i--) {
    channelControl(i);
    delay(50); // Delay pendek untuk efek chaser cepat
  }
}