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#include <SoftwareSerial.h>
SoftwareSerial mySerial(10, 11); // RX, TX
#define RedLed 13
#define YellowLed A0
#define GreenLed A1
#define SlaveStatePin A3
void TrafficLight();
long long int current=0, privent=0;

byte SlaveState = 0, i;
char c_Arr[2];
void setup() {
  Serial.begin(9600);
  mySerial.begin(9600);
  pinMode(RedLed, OUTPUT);
  pinMode(YellowLed, OUTPUT);
  pinMode(GreenLed, OUTPUT);
  pinMode(SlaveStatePin, INPUT);
  if (digitalRead(SlaveStatePin) == HIGH)
    SlaveState = 1;
}
void loop() {
   delay(75); //75
    if (mySerial.available())
  {
    for (i = 0; i < 2; i++)
      c_Arr[i] = (char)mySerial.read();
      privent=current;
  }
  for (i = 0; i < 2; i++) {
    Serial.print(c_Arr[i]);
  }
  Serial.println();
//    if (!mySerial.available())
//  {
//
//    current=millis()/1000;
//    if((current-privent)>=5){
//    for (i = 0; i < 2; i++)
//      c_Arr[i] = '0';
//      digitalWrite(YellowLed, LOW);
//      digitalWrite(GreenLed, LOW);
//      digitalWrite(RedLed, LOW);
//      }
//  }
  TrafficLight();
}

void TrafficLight()
{
  if (SlaveState == 0) {
    if (strstr(c_Arr, "0G") != NULL) {
      digitalWrite(GreenLed, HIGH);
      digitalWrite(YellowLed, LOW);
      digitalWrite(RedLed, LOW);
    }
    if (strstr(c_Arr, "HT") != NULL) {
      digitalWrite(GreenLed, HIGH);
      digitalWrite(YellowLed, LOW);
      digitalWrite(RedLed, LOW);
    }
     if (strstr(c_Arr, "LT") != NULL) {
      digitalWrite(GreenLed, LOW);
      digitalWrite(YellowLed, LOW);
      digitalWrite(RedLed, LOW);
    }
    if (strstr(c_Arr, "0Y") != NULL) {
      digitalWrite(YellowLed, HIGH);
      digitalWrite(RedLed, LOW);
      digitalWrite(GreenLed, LOW);
    }
    if (strstr(c_Arr, "0R") != NULL) {
      digitalWrite(RedLed, HIGH);
      digitalWrite(YellowLed, LOW);
      digitalWrite(GreenLed, LOW);
    }
  }
  if (SlaveState == 1) {
    if (strstr(c_Arr, "1G") != NULL) {
      digitalWrite(GreenLed, HIGH);
      digitalWrite(YellowLed, LOW);
      digitalWrite(RedLed, LOW);
    }
    if (strstr(c_Arr, "1T") != NULL) {
      digitalWrite(GreenLed, !digitalRead(GreenLed));
      delay(500);
      digitalWrite(YellowLed, LOW);
      digitalWrite(RedLed, LOW);
    }
    if (strstr(c_Arr, "1Y") != NULL) {
      digitalWrite(YellowLed, HIGH);
      digitalWrite(RedLed, LOW);
      digitalWrite(GreenLed, LOW);
    }
    if (strstr(c_Arr, "1R") != NULL) {
      digitalWrite(RedLed, HIGH);
      digitalWrite(YellowLed, LOW);
      digitalWrite(GreenLed, LOW);
    }
  }
        if (strstr(c_Arr, "RT") != NULL) {
          ledToggle(RedLed);
    }
        if (strstr(c_Arr, "YT") != NULL) {
      ledToggle(YellowLed);
    }
        if (strstr(c_Arr, "GT") != NULL) {
          ledToggle(GreenLed);
    }
      if (strstr(c_Arr, "FF") != NULL) {
      digitalWrite(GreenLed, LOW);
      digitalWrite(YellowLed, LOW);
      digitalWrite(RedLed, LOW);
    }

}
void ledToggle(int pin)
{
  digitalWrite(pin, HIGH);
  delay(500);                      // delay 500 olacaq
  digitalWrite(pin, LOW);
  delay(500);
}