#include "Hardware.h"
#include "app.h"
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C 
lcd(0X27,16,2);
void setup()
{
  setup_led();
  setup_button();
  lcd.init();
  lcd.clear();         
  lcd.backlight();  
}

void loop() {
  // put your main code here, to run repeatedly:
  lcd.clear();  
  lcd.print("Choose Option:");
  lcd.setCursor(0,1);
  lcd.print("1)Mem 2)Response");
  while(1){
    if ((BUTTON_PIN & (1<<BUTTON_RED))== 0){   //option 1
      delay(10);
     while ((BUTTON_PIN & (1<<BUTTON_RED))== 0);
     execute_memory_game();
     break;
    }
    else if ((BUTTON_PIN & (1<<BUTTON_BLUE)) == 0){ //option 2
      delay(10);
      while((BUTTON_PIN & (1<<BUTTON_BLUE)) == 0);
      execute_response();
      break;
    }
  }
}






Main_code.ino

diagram.json

#ifndef HARDWARE_H
#define HARDWARE_H

#define RED_PIN 2
#define BLUE_PIN 3
#define GREEN_PIN 4
#define YELLOW_PIN 5

#define LED_PORT PORTD
#define LED_DDR DDRD

#define BUTTON_RED 0
#define BUTTON_BLUE 1
#define BUTTON_GREEN 2
#define BUTTON_YELLOW 3

#define BUTTON_DDR DDRB
#define BUTTON_PORT PORTB
#define BUTTON_PIN PINB

#endif









Hardware.h

#ifndef APP_H
#define APP_H

#define Memory_delay 250

#define RESPONSE_DELAY 30

#define WAIT 3000

#endif

app.h

int temp;
int led_on[8]; // array to store the turned on LED
int n = 3;  // to register the amount of LEDs to tturn on
int flag = 1;
int press;
int pressed;

void setup_led(){
  LED_DDR |= (1<<RED_PIN) | (1<<BLUE_PIN ) | (1<<GREEN_PIN) | (1<<YELLOW_PIN);
}

void setup_button(){
  BUTTON_DDR &= ~(1<<BUTTON_RED) & ~(1<<BUTTON_BLUE) & ~(1<<BUTTON_GREEN) & ~(1<<BUTTON_YELLOW);
  BUTTON_PORT |= (1<<BUTTON_RED) | (1<<BUTTON_BLUE) | (1<<BUTTON_GREEN) | (1<<BUTTON_YELLOW);
}

void random_led_memory (){
  temp = random() % 4;
  temp += 2;
  LED_PORT |= (1<<temp);
}

void LEVEL_EXECUTE(){
  for (int i = 0; i<n; i++){
    random_led_memory();
    delay(Memory_delay);
    LED_PORT &= ~(1<<RED_PIN) & ~(1<<BLUE_PIN ) & ~(1<<GREEN_PIN) & ~(1<<YELLOW_PIN); 
    delay(Memory_delay);
    led_on[i] = temp;
  }
}

void get_check_sequence(){
  for(int i = 0; i<n; i++){
    int f = led_on[i]-2; 
    pressed = 0;
    while(1){
        for(int i = 0; i<4; i++){   // Incorrect button pressed
         if ((BUTTON_PIN & (1<<i))== 0){
          delay(20);
          while((BUTTON_PIN & (1<<i))== 0);
          press = i;
          pressed = 1;
          delay(20);
         }
        }
        if(pressed == 1)  break;
      }
      if (f != press){
        lcd.clear();
        lcd.print("Incorrect");
        flag = 0;
      }
      if (flag == 0) break;
    }
    if (flag == 1) {
    lcd.clear();
    lcd.print("Correct");
  }
  }
 
  
void execute_memory_game(){
  lcd.clear();
  lcd.print("Press any");
  while(1){
    pressed = 0;
    for(int i = 0; i<4; i++){
      if((BUTTON_PIN & (1<<i)) == 0){
        delay(10);
        while((BUTTON_PIN & (1<<i)) == 0);
        pressed = 1;
        break;
        delay(10);
      }
    }
    if (pressed == 1) break;
  }
  lcd.clear();
  lcd.print("LEVEL 1");
  delay(WAIT/2);
  for(int i = 0; i<3; i++){
    int cont = 1;
    LEVEL_EXECUTE();
    get_check_sequence();
    delay(WAIT);
    if (i == 2) break; // maximum level reached 
    if (flag == 0)  break; // shows that user got it incorrect
    lcd.clear();
    lcd.print("CONTINUE");
    lcd.setCursor(0,1);
    lcd.print("1)YES 2)NO");
    while(1){
      if ((BUTTON_PIN & (1<<BUTTON_RED))== 0){
        delay(10);
        while ((BUTTON_PIN & (1<<BUTTON_RED))== 0);
        lcd.clear();
        lcd.print("LEVEL ");
        int level = i+2;
        lcd.print(level);
        delay(10);
        break;
      }
      else if ((BUTTON_PIN & (1<<BUTTON_BLUE))== 0){
        delay(10);
        while ((BUTTON_PIN & (1<<BUTTON_BLUE))== 0);
        cont = 0;
        delay(10);
        break;
      }
    }
  if (cont == 0)  break;
  n+=2; // increase difficulty of level by turning on 2 more LEDs
  }
  lcd.clear();
  lcd.setCursor(5,0);
  lcd.print("Thanks");
  lcd.setCursor(1,1);
  lcd.print("for playing :)");
  n = 3;
  flag = 1;
  delay(WAIT);
}



memory.ino

int ledon;
int response[5]; // To store the response time
int tempR;
int av;
void random_led_response(){
  tempR = random() % 4;
  ledon = tempR;
  tempR += 2;
  LED_PORT |= (1<<tempR);
  delay(RESPONSE_DELAY);
  LED_PORT &= ~(1<<tempR);
}

int execute_response(){
  lcd.clear();
  lcd.print("Press any");
  while(1){
    int pressed = 0;
    for(int i = 0; i<4; i++){
      if((BUTTON_PIN & (1<<i)) == 0){
        delay(10);
        while((BUTTON_PIN & (1<<i)) == 0);
        pressed = 1;
        break;
        delay(10);
      }
    }
    if (pressed == 1) break;
  }
  int sum = 0;
  for(int i = 0; i<5; i++){
    lcd.clear();
    lcd.print("trial ");
    int trial = i+1;
    lcd.print(trial);
    delay(750);
    random_led_response();
    int t1 = millis(); 
    while(1){
      if ((BUTTON_PIN & (1<<ledon)) == 0){
        delay(10);
        while((BUTTON_PIN & (1<<ledon)) == 0);
        int t2 = millis();
        response[i] = t2 - t1;
        lcd.clear();
        lcd.print(response[i]);
        delay(1500);
        break;
      }
    }
  }
  for(int i = 0; i<5; i++){
   sum = sum + response[i];
  } 
  lcd.clear();
  av = sum/5;
  lcd.clear();
  lcd.print("av: ");
  lcd.setCursor(0,1);
  lcd.print(av);
  delay(WAIT);
  lcd.clear();
  lcd.setCursor(5,0);
  lcd.print("Thanks");
  lcd.setCursor(1,1);
  lcd.print("for playing :)");
  delay(WAIT);
}



response.ino

# Wokwi Library List
# See https://docs.wokwi.com/guides/libraries

LiquidCrystal I2C
