#include <SoftwareSerial.h>
SoftwareSerial softSerial(4, 11); //RX is on pin 4
int incomingByte = 5;
int A = 8;
int left = 2;
int right = 3;
int start = 7;
void setup() { 
  softSerial.begin(9600); 
  pinMode(A, OUTPUT);
  digitalWrite(A, HIGH); //buttons are active low
  pinMode(right, OUTPUT);
  digitalWrite(right, HIGH);
  pinMode(left, OUTPUT);
  digitalWrite(left, HIGH);
  pinMode(start,OUTPUT);
  digitalWrite(start,HIGH);
}

void loop() {
if (softSerial.available()) {
  incomingByte = softSerial.read();
  if (incomingByte == 0) {
    digitalWrite(A, LOW);
    delay(500);            //The A button needs a slight delay otherwise it won't be detected by the NES
    digitalWrite(A, HIGH);
  }
    if (incomingByte == 1) {
  digitalWrite(left, HIGH);
  digitalWrite(right, LOW);
  }
    if (incomingByte == 2) {
    digitalWrite(right, HIGH);
    digitalWrite(left, HIGH);
  }
    if (incomingByte == 3) {
      digitalWrite(right, HIGH);
        digitalWrite(left, LOW);
  }
      if (incomingByte == 4) {
        digitalWrite(start, LOW);
        delay(200);              //Same goes for the start button
        digitalWrite(start, HIGH);
  }
}
}