#include <LiquidCrystal_I2C.h>

#define I2C_ADDR    0x27
#define LCD_COLUMNS 16
#define LCD_LINES   2

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);



const int buzzerPin = 13;
const int buttonPin = 2;
const int secondButtonPin = 4;
const int interpretButton =3;
int lungimeMesaj=0;
char* mesaj[5]= {' ',' ',' ',' ',' '};


const char* morse[36] =  {".-   ", "-... ", "-.-. ", "-..  ", ".    ", "...- ",
                          "--.  ", ".... ", "..   ", ".--- ", "-.-  ", ".-.. ",
                          "--   ", "-.   ", "---  ", ".--. ", "--.- ", ".-.  ", 
                          "...  ", "-    ", "..-  ", "...- ", ".--  ", "-..- ",
                          "-.-- ", "--.. ", ".----", "..---", "...--", "....-",
                          ".....", "-....", "--...", "---..", "----.", "-----"
                         };


const char *litere = "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";

byte customChar[8] =
{
    B00000,
    B00000,
    B01110,
    B01110,
    B01110,
    B01110,
    B00000,
    B00000
};







void setup()
{
    Serial.begin(9600);
    pinMode(buzzerPin, OUTPUT);
    pinMode(buttonPin, INPUT_PULLUP);
    pinMode(secondButtonPin, INPUT_PULLUP);
    pinMode(interpretButton, INPUT_PULLUP);


    lcd.createChar(0, customChar);

    lcd.init();
    lcd.backlight();
}



int ok= 0;

void loop()
{

    if (digitalRead(buttonPin) == LOW)
    {
        delay(200);
        tone(buzzerPin, 1000);
        Serial.print('-');

        mesaj[lungimeMesaj]='-';
        lungimeMesaj++;
        delay(500);

        noTone(buzzerPin);
        delay(200);
    }

    if (digitalRead(secondButtonPin) == LOW)
    {
        delay(200);
        tone(buzzerPin, 200);
        Serial.print('.');

        mesaj[lungimeMesaj]='.';
        lungimeMesaj++;
        delay(500);

        noTone(buzzerPin);
        delay(200);
    }



    if (digitalRead(interpretButton) == LOW)
    {
        delay(400);
        Serial.print("=");

        for(int i=0; i<36; i++)
        {
            ok=0;
            for(int j=0; j<5; j++)
            {
                if(mesaj[j]==morse[i][j])
                {
                    ok++;
                }
            }

            if(ok==5)
            {

                lcd.setCursor(7, 1);
                lcd.print(litere[i]);
            }
        }
        lcd.setCursor(6, 0);

        for(int i=0; i<5; i++)
        {
            if(mesaj[i]=='.')
            {
                lcd.print(".");
            }
            if(mesaj[i]=='-')
            {
                lcd.print("-");
            }
            mesaj[i]=' ';
            lungimeMesaj=0;
        }
        delay(200);
    }
}