Morse Code Converter

1#include <LiquidCrystal_I2C.h>
2#include <Wire.h>
3
4int timeStart  = 0;
5int buttonMorse = 13;
6int buttonEnd = 12;
7int buttonMorseState = 0;
8int  buttonEndState = 0;
9int timeButtonPressed = 0;
10int buttonStartEnd = 11;
11int  buttonStartEndState= 0;
12int cont = 0;
13int timeButtonNotPressed_Start = 0;
14int  timeButtonNotPressed = 0;
15int buzzer = 10;
16int lcdPos = 0;
17
18LiquidCrystal_I2C  lcd(0x3F,16,2);
19
20// morse character
21String character = "";
22// list  of letters and numbers
23String lettersAndNumbers[36]={"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"};
24//  respective morse code for each letter and number
25String morseCode[36]={".-","-...","-.-.","-..",".","..-.","--.","....","..",".---","-.-",".-..","--","-.","---",".--.","--.-",".-.","...","-","..-","...-",".--","-..-","-.--","--..",
26"-----",".----","..---","...--","....-",".....","-....","--...","---..","----."};
27
28void  setup() {
29  // put your setup code here, to run once:
30  pinMode(buttonMorse,  INPUT);
31  pinMode(buttonEnd, INPUT);
32  pinMode(buttonStartEnd, INPUT);
33  pinMode(buzzer, OUTPUT);
34
35  lcd.init(); // Inicialize communication with  the display
36  lcd.backlight(); // Turn the display lights on
37  lcd.clear();  // Clean the display
38  lcd.setCursor(0,0);
39  Serial.begin(9600);
40
41}
42
43void  loop() {
44  if (lcdPos%32==0) {
45    // Everytime all the 32 positions of the  display are being used, clean it up
46    lcd.clear(); 
47  }
48  buttonStartEndState  = digitalRead(buttonStartEnd);
49  // Everytime the button thats start and pauses  the program is pressed, the program increases 'cont' in one
50  if(buttonStartEndState){
51    cont++;
52    delay(500);
53  }
54  // If 'cont' is even, the program starts,  if it's odd, the program pauses
55  if(cont%2==1){
56      // When the program  is running, the time that the button of the morse code is not pressed is count
57      timeButtonNotPressed = millis();
58      // If the button is not pressed  for 3 seconds, a space is done
59      if (timeButtonNotPressed % 3000 == 0){
60      Serial.print(" ");
61      lcd.print(" ");
62      lcdPos ++;
63      delay(300);
64      }
65  buttonMorseState = digitalRead(buttonMorse);
66  buttonEndState =  digitalRead(buttonEnd);
67  // timeStart restart before press the button
68  timeStart  = millis();
69// while the button is pressed the time is count
70  while (buttonMorseState){
71    buttonMorseState = digitalRead(buttonMorse);
72    tone(buzzer, 800);
73  }
74  noTone(buzzer);
75// finalize the time and store in timeButtonPressed
76  timeButtonPressed  = millis() - timeStart;
77// if the button is pressed for less than 200 miliseconds  and more than 5 miliseconds, so the character is "."
78  if (timeButtonPressed  < 200 and timeButtonPressed > 5){
79    character = character + ".";
80    //  the time that the button is not pressed is turned to 0
81    timeButtonNotPressed  = timeButtonNotPressed - timeButtonNotPressed;
82  }
83  // if the button is pressed  for more than 200 seconds, so the character is "-"
84  if (timeButtonPressed  > 200) {
85    character = character + "-";
86    // the time that the button  is not pressed is turned to 0
87    timeButtonNotPressed = timeButtonNotPressed  - timeButtonNotPressed;
88  }
89  // if the button that ends the character is  pressed
90  if (buttonEndState){
91    // compare the list of characters with  the list of morse
92     for(int i = 0;i < 36; i++){
93       // if the character  made is equal to the respective morse code, print the character that have the same  index
94       if(morseCode[i]==character){
95         Serial.print(lettersAndNumbers[i]);
96         lcd.print(lettersAndNumbers[i]);
97         // Position of the display's  cursor is increased in one
98         lcdPos ++;
99         // If the position  is in the end of the first line, everytime lcdPos is divisible by 16, the cursor  go to the second line, position 0,1
100         if(lcdPos%16==0){
101          lcd.setCursor(0,1);
102         }
103       }
104     }
105     // character is restarted
106    character  = "";
107    delay(500);
108  }
109  }
110}