# include <LiquidCrystal_I2C.h>
// #include <Wire.h>

int timeStart  = 0;
int buttonMorse = 9;
int buttonEnd = 12;
int buttonMorseState = 0;
int  buttonEndState = 0;
int timeButtonPressed = 0;
int buttonStartEnd = 11;
int  buttonStartEndState = 0;
int cont = 0;
int timeButtonNotPressed_Start = 0;
int  timeButtonNotPressed = 0;
int buzzer = 10;
int lcdPos = 0;

LiquidCrystal_I2C  lcd(0x27, 16, 2);

// morse character
String character = "";
// list  of letters and numbers
String lettersAndNumbers[37] = {" ", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "0", "1", "2", "3", "4", "5", "6", "7", "8", "9"};
//  respective morse code for each letter and number
String morseCode[37] = {"-..-.", ".-", "-...", "-.-.", "-..", ".", "..-.", "--.", "....", "..", ".---", "-.-", ".-..", "--", "-.", "---", ".--.", "--.-", ".-.", "...", "-", "..-", "...-", ".--", "-..-", "-.--", "--..",
                        "-----", ".----", "..---", "...--", "....-", ".....", "-....", "--...", "---..", "----."
                       };

void  setup() {
  // put your setup code here, to run once:
  pinMode(buttonMorse,  INPUT_PULLUP);
  pinMode(buttonEnd, INPUT_PULLUP);
  pinMode(buttonStartEnd, INPUT_PULLUP);
  pinMode(buzzer, OUTPUT);

  lcd.init(); // Inicialize communication with  the display
  lcd.backlight(); // Turn the display lights on
  lcd.clear();  // Clean the display
  lcd.setCursor(0, 0);
  Serial.begin(9600);
  Serial.println("setup");
}

# define PRESSED LOW

void  loop() {
  if (0) if (digitalRead (buttonStartEnd) == HIGH) {
  //if (lcdPos % 32 == 0) {
    // Everytime all the 32 positions of the  display are being used, clean it up
    lcd.clear();
  }

  buttonStartEndState  = digitalRead(buttonStartEnd) == PRESSED;
  // Everytime the button thats start and pauses  the program is pressed, the program increases 'cont' in one
  if (buttonStartEndState) {
    cont++;
    delay(500);
    Serial.println(cont);
    Serial.println("    botão press");
  }
  // If 'cont' is even, the program starts,  if it's odd, the program pauses

    // When the program  is running, the time that the button of the morse code is not pressed is count
    timeButtonNotPressed = millis();
    // If the button is not pressed  for 3 seconds, a space is done
    if (0) if (timeButtonNotPressed % 3000 == 0) {
      Serial.println("   % 3000 == 0");
      lcd.print("");
      lcdPos++;
      delay(300);
    }


    buttonMorseState = digitalRead(buttonMorse) == PRESSED;
    buttonEndState =  digitalRead(buttonEnd) == PRESSED;
    // timeStart restart before press the button
    timeStart  = millis();
    // while the button is pressed the time is count
  //  Serial.println(buttonMorseState);
    while (buttonMorseState) {
      buttonMorseState = digitalRead(buttonMorse) == PRESSED;
      tone(buzzer, 800);
    }
    noTone(buzzer);
    // finalize the time and store in timeButtonPressed
    timeButtonPressed  = millis() - timeStart;
    // if the button is pressed for less than 200 miliseconds  and more than 5 miliseconds, so the character is "."
    if (timeButtonPressed  < 200 and timeButtonPressed > 10) { // why? crude combo debounce and state change?
      Serial.println("= .  ");
      character = character + ".";
      //  the time that the button is not pressed is turned to 0
      timeButtonNotPressed  = 0;
    }
    // if the button is pressed  for more than 200 seconds, so the character is "-"
    if (timeButtonPressed  > 200) {
      character = character + "-";
      Serial.println("           = -  ");
      // the time that the button  is not pressed is turned to 0
      timeButtonNotPressed = 0;
    }
    // if the button that ends the character is  pressed
    if (buttonEndState) {
      Serial.print("              >");
      Serial.print(character);
      Serial.println("<");

      for (int i = 0; i < 37; i++) {

        if (morseCode[i] == character) {
          Serial.print(lettersAndNumbers[i]);
          lcd.setCursor(lcdPos % 16,lcdPos / 16);
          lcd.print(lettersAndNumbers[i]);

          lcdPos += 8;
          lcdPos &= 31;

        }
      }

      character  = "";
      delay(500);
    }   
  }