lab8.3

/////////////////////////////////////////////////////////////////
// Analog_Input
// A program that turns on an LED on and off based on the value
// read from the A/D
// Arduino version 1.05
/////////////////////////////////////////////////////////////////
int ledPin[] = {2,3,4,5};

void setup()      //This function executes only once
{ 
for (int i =0;i<4;i++)
{
  pinMode(ledPin[i], OUTPUT);
  pinMode(11, OUTPUT);
}
  
}
void loop(){
  while (1) {
    readinput();
    delay(300);
   motorcontrol();
  }
  
  
}
  
int readinput()     // This function executes repeatedly
{
  int addata = analogRead(0);

  int interval = 0;
  int upper = 64;
  while (upper <= 1024) {
    if (addata < upper) {
      break;
    } else {
      interval += 1;
      upper += 64;
    }
  }

  int a = 0;
  int b = 240;
 
  //now we want to take the input and map it to [a,b] for our duty cycle 
  int scale = (b-a+1)/(1023-0+1);
  int offset = a;
 
displayBinary(interval); 
return scale*addata + offset;
}

void displayBinary(byte num)
{
  int out = 2;
  for (int i =0;i<4;i++)
  {
    if (num&(1<<i))
    {
      digitalWrite(out+i, HIGH);
    }
    else
    {
    digitalWrite(out+i, LOW);
    }
  }
}

void motorcontrol()
{
   int dutycycle = readinput();

   analogWrite(11, dutycycle);
  

 }