/**
   Simon Game for Arduino with Score display

   Copyright (C) 2022, Uri Shaked

   Released under the MIT License.
*/

#include "pitches.h"

/* Constants - define pin numbers for LEDs,
   buttons and speaker, and also the game tones: */
const uint8_t ledPins[] = {9, 8, 7, 6}; //JVRB
const uint8_t buttonPins[] = {A3, A2, A1, A0}; //JVRB
#define SPEAKER_PIN 3

// These are connected to 74HC595 shift register (used to show game score):
const int LATCH_PIN = 11;  // 74HC595 pin 12 RCK
const int DATA_PIN = 10;  // 74HC595pin 14 SER
const int CLOCK_PIN = 12;  // 74HC595 pin 11 SCK

#define MAX_GAME_LENGTH 100

const int gameTones[] = { NOTE_G3, NOTE_C4, NOTE_E4, NOTE_G5};

const int CMD_DIG2 = 5;
const int CMD_DIG1 = 4;

/* Global variables - store the game state */
uint8_t gameSequence[MAX_GAME_LENGTH] = {0};
uint8_t gameIndex = 0;

/**
   Set up the Arduino board and initialize Serial communication
*/
void setup() {
  Serial.begin(9600);
  for (byte i = 0; i < 4; i++) {
    pinMode(ledPins[i], OUTPUT);
    pinMode(buttonPins[i], INPUT_PULLUP);
  }
  pinMode(SPEAKER_PIN, OUTPUT);
  pinMode(LATCH_PIN, OUTPUT);
  pinMode(CLOCK_PIN, OUTPUT);
  pinMode(DATA_PIN, OUTPUT);

  pinMode(CMD_DIG1, OUTPUT); 
  pinMode(CMD_DIG2, OUTPUT);

  // The following line primes the random number generator.
  // It assumes pin A3 is floating (disconnected):
  randomSeed(analogRead(A4));
}

/* Digit table for the 7-segment display */
const uint8_t digitTable[] = {
  0b00111111,
  0b00000110,
  0b01011011,
  0b01001111,
  0b01100110,
  0b01101101,
  0b01111101,
  0b00000111,
  0b01111111,
  0b01101111,
};
const uint8_t DASH = 0b01000000;

unsigned long int TpDis = 0;
bool dig2ToDisplay = 0;

void display2Digits(uint8_t dig1, uint8_t dig2)
{
  unsigned long tc = millis();
  if(tc-TpDis>40)
  {
    if(dig2ToDisplay)
    {
    digitalWrite(CMD_DIG1, HIGH);
    digitalWrite(LATCH_PIN, LOW);
    shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, dig2);
    digitalWrite(LATCH_PIN, HIGH); 
    digitalWrite(CMD_DIG2, LOW);
    }
    else
    {
    digitalWrite(CMD_DIG2, HIGH);
    digitalWrite(LATCH_PIN, LOW);
    shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, dig1);
    digitalWrite(LATCH_PIN, HIGH); 
    digitalWrite(CMD_DIG1, LOW);
    }
    TpDis = millis();
    dig2ToDisplay = !dig2ToDisplay;
  }
}

/*void displayScore() {
  int high = gameIndex % 100 / 10;
  int low = gameIndex % 10;
  display2Digits(high ? digitTable[high] : 0xff, digitTable[low]);
}*/

void loop()
{
  display2Digits(digitTable[4], digitTable[7-2]);
  for (uint64_t i = 0 ; i <100000 ; i++)
  {
    uint64_t j=i/10000;
    display2Digits(digitTable[j], digitTable[9-j]);
  }
}