#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,20,4);
byte heart[] = {
  0x00,
  0x0A,
  0x1F,
  0x0E,
  0x04,
  0x00,
  0x00
};

byte smile[] = {
	0b00000,
	0b00000,
	0b01010,
	0b00000,
	0b10001,
	0b01110,
	0b00000,
	0b00000
};
int COUNT;
int red = 13;//red light pin
int orange = 3; //orange light pin
int green = 2; // green light pin
int buzz = 5; 
//tone(buzz,3000,300);
//noTone(buzz);
int MS = 4; //motion sensor pin
int DT = 3000; //time delay
int value = 0; // the value og motion sensor
int a=8,b=9,c=10,d=11,e=12,f=7,g=6; // seven segment pins
void setup() {
  // put your setup code here, to run once:

pinMode(a, OUTPUT);  pinMode(b, OUTPUT);  pinMode(c, OUTPUT);
pinMode(d, OUTPUT);  pinMode(e, OUTPUT);  pinMode(f, OUTPUT);
pinMode(g, OUTPUT); // seven segment

pinMode(red, OUTPUT); pinMode(orange, OUTPUT); pinMode(green, OUTPUT);//led ligh

pinMode(MS, INPUT);//motion sensor

lcd.init();
lcd.backlight();
lcd.clear();
lcd.createChar(1,smile);
lcd.setCursor(2,0);

lcd.write(1);
lcd.print(" HELLO DRIVER ");
lcd.write(1);


Serial.begin(9600);

}



void loop() {
  // timer(5);
  // put your main code here, to run repeatedly:
  Red_light();
  delay(DT/6);
  Yellow_light();
  delay(DT/6);
  Green_light();
  delay(DT/6);

  
  
  
}
void Red_light()
{
  RT();// Red Text 
  digitalWrite(red,HIGH);
  delay(DT);
  digitalWrite(red,LOW);

 for ( int i = 0;i < 5; i++){
    digitalWrite(red,HIGH);
    delay(DT/10);
    digitalWrite(red,LOW);
    delay(DT/10);
   }
  value == digitalRead(MS);
 if (value == HIGH) {
   tone(buzz,3000,300);
 }
 else {
   noTone(buzz);
 }
}
void Yellow_light()
{  YT();// Yellow Text 
   digitalWrite(orange,HIGH);
   delay(DT);
   digitalWrite(orange,LOW);

    for ( int i = 0;i < 5; i++){
      digitalWrite(orange,HIGH);
      delay(DT/10);
      digitalWrite(orange,LOW);
     delay(DT/10);
     }
}
void Green_light()
{  
  GT();// Green Text 
  digitalWrite(green,HIGH);
  delay(DT);
  digitalWrite(green,LOW);
   for (int i = 0; i < 5; i++){
     digitalWrite(green,HIGH);
      delay(DT/10);
     digitalWrite(green,LOW);
     delay(DT/10);
     }
}
void RT() // Red text 
{
  lcd.createChar(2,heart);
  lcd.setCursor(2,2);
  lcd.write(2);
  lcd.print("  PLEASE STOP ");
  lcd.write(2);
}

void YT()// Yellow Text 
{
  lcd.createChar(2,heart);
  lcd.setCursor(2,2);
  lcd.write(2);
  lcd.print("  PLEASE WAIT ");
  lcd.write(2);
}

void GT()// Green Text 
{
  lcd.createChar(2,heart);
  lcd.setCursor(2,2);
  lcd.write(2);
  lcd.print("  DRIVE SAFE ");
  lcd.write(1);
}
void timer(int nu)
 {
   for(COUNT=nu;COUNT>=0;COUNT--)
    {
      Serial.begin(9600);
      Serial.println(COUNT);
      switch (COUNT)
                {
 
                case 0://when count value is zero show”0” on disp
                digitalWrite(a, LOW);
                digitalWrite(b, LOW);
                digitalWrite(c, LOW);
                digitalWrite(d, LOW);
                digitalWrite(e, LOW);
                digitalWrite(f, LOW);
                analogWrite(g, 1);;
                delay(1000);
                break;
 
                case 1:// when count value is 1 show”1” on disp
                digitalWrite(a, HIGH);
                digitalWrite(b, LOW);
                digitalWrite(c, LOW);
                digitalWrite(d, HIGH);
                digitalWrite(e, HIGH);
                digitalWrite(f, HIGH);
                analogWrite(g, 1);
                delay(1000);
                break;
 
                case 2:// when count value is 2 show”2” on disp
                digitalWrite(a, LOW);
                digitalWrite(b, LOW);
                digitalWrite(c, HIGH);
                digitalWrite(d, LOW);
                digitalWrite(e, LOW);
                digitalWrite(f, HIGH);
                analogWrite(g, 0);
                delay(1000);
                break;
 
                case 3:// when count value is 3 show”3” on disp
                digitalWrite(a, LOW);
                digitalWrite(b, LOW);
                digitalWrite(c, LOW);
                digitalWrite(d, LOW);
                digitalWrite(e, HIGH);
                digitalWrite(f, HIGH);
                analogWrite(g, 0);
                delay(1000);
                break;
 
                case 4:// when count value is 4 show”4” on disp
                digitalWrite(a, HIGH);
                digitalWrite(b, LOW);
                digitalWrite(c, LOW);
                digitalWrite(d, HIGH);
                digitalWrite(e, HIGH);
                digitalWrite(f, LOW);
                analogWrite(g, 0);
                delay(1000);
                break;
 
                case 5:// when count value is 5 show”5” on disp
                digitalWrite(a, LOW);
                digitalWrite(b, HIGH);
                digitalWrite(c,LOW);
                digitalWrite(d, LOW);
                digitalWrite(e, HIGH);
                digitalWrite(f, LOW);
                analogWrite(g, 0);
                delay(1000);
                break; 
                }
        }         
              }