//example sketch to use created shift register functions
int serialIn = 34;
int registerClk = 36;
int serialClk = 38;
int serialClr = 40;

void setup(){
  //setting the mode of the pins
  pinMode(serialIn, OUTPUT);
  pinMode(registerClk, OUTPUT);
  pinMode(serialClk, OUTPUT);
  pinMode(serialClr, OUTPUT);
  
  //setting the initial pin values
  digitalWrite(serialIn, LOW);
  digitalWrite(registerClk, LOW);
  digitalWrite(serialClk, LOW);
  digitalWrite(serialClr, LOW);
  //clearing out the registers
  digitalWrite(registerClk, HIGH);
  digitalWrite(registerClk, LOW);
  digitalWrite(serialClr, HIGH);
}//end of setup

void loop(){
  lightUpOneLed(1,250);
  lightUpOneLed(2,250);
  lightUpOneLed(3,250);
  lightUpOneLed(4,250);
  lightUpOneLed(5,250);
  lightUpOneLed(6,250);
  lightUpOneLed(7,250);
  lightUpOneLed(8,250);
}//end of loop

//declaring global variables for the function
int offLed=0;
int onLed=0;

void lightUpOneLed(int ledNumber, int lightDuration){
  //turning on the specific anode
  digitalWrite(registerClk, LOW);
  for(offLed=0; offLed<(ledNumber-1); offLed++){
    digitalWrite(serialIn, LOW);
    digitalWrite(serialClk, HIGH);
    digitalWrite(serialClk, LOW);
    }
  for(onLed=0; onLed<1; onLed++){
    digitalWrite(serialIn, HIGH);
    digitalWrite(serialClk, HIGH);
    digitalWrite(serialClk, LOW);
    }
  for(offLed=0; offLed<(8-ledNumber); offLed++){
    digitalWrite(serialIn, LOW);
    digitalWrite(serialClk, HIGH);
    digitalWrite(serialClk, LOW);
    }
  digitalWrite(registerClk, HIGH);
  delay(lightDuration);
}//end of lightUpOneLed function