/*traffic light leds and seven segments display for counting down*/

#include <Arduino.h>
#include "number.h"


int RED = 13;
int YELLOW = 12;
int GREEN = 2;

int a=7; 
int b=6; 
int c=5; 
int d=11; 
int e=10; 
int f=8; 
int g=9; 


void setup() {
  // put your setup code here, to run once:
  pinMode(RED, OUTPUT);
  pinMode(YELLOW, OUTPUT);
  pinMode(GREEN, OUTPUT);

  int i;
  for(i=5;i<=11;i++)
  pinMode(i,OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
  green();
  yellow();
  red();
}

//in every color function, it has digitalwrite of high and low voltage of three leds and
//displaying numbers for the purpose of counting down
void red(void)
{
  digitalWrite(YELLOW, LOW);
  digitalWrite(GREEN, LOW);
  digitalWrite(RED, HIGH);
  
  clearDisplay();
  display8(); 
  delay(1000); 
  clearDisplay();

  display7(); 
  delay(1000); 
  clearDisplay();

  display6(); 
  delay(1000); 
  clearDisplay();

  display5(); 
  delay(1000); 
  clearDisplay();

  display4();
  delay(1000); 
  clearDisplay();

  display3(); 
  delay(1000);
  clearDisplay();

  display2(); 
  delay(1000);
  clearDisplay(); 

  display1(); 
  delay(1000);
  clearDisplay();

  display0(); 
  delay(1000); 
  clearDisplay();
}

void green(void)
{
  digitalWrite(YELLOW, LOW);
  digitalWrite(RED, LOW);
  digitalWrite(GREEN, HIGH);

  clearDisplay();
  display6(); 
  delay(1000); 
  clearDisplay();

  display5(); 
  delay(1000); 
  clearDisplay();

  display4();
  delay(1000); 
  clearDisplay();

  display3(); 
  delay(1000);
  clearDisplay();

  display2(); 
  delay(1000);
  clearDisplay(); 

  display1(); 
  delay(1000);
  clearDisplay();

  display0(); 
  delay(1000); 
  clearDisplay();
}

void yellow(void)
{
  digitalWrite(GREEN, LOW);
  digitalWrite(RED, LOW);
  digitalWrite(YELLOW, HIGH);
  
  clearDisplay();

  display2(); 
  delay(1000);
  clearDisplay(); 

  display1(); 
  delay(1000);
  clearDisplay();

  display0(); 
  delay(1000); 
  clearDisplay();

}