AM ARDUINO STATION WITH CW KEY AND DECODER

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// MADE BY SHARPY NIORO //
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//   JUST FOR LULZ [c]  //
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// USE A YOUR OWN RISK  //
//       800kHz         //
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//      WARNING!!!      //
//  MAY CAUSE HARMFUL   //
//    INTERFERENCE      //
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#include <U8glib.h>

U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_NO_ACK|U8G_I2C_OPT_FAST); // DOES THE MAGICAL TRICK

unsigned long t1, t2, T12, T13, len, dahLen; // TIME VALUES
bool wasPressed, noobMode = false;
String code, string; // THE CODE OF LAST CHAR AND STRING OF CHARS YOU'VE ENTERED
char codeReaded, lastChar; // SOME CHARS
const byte ANTENNA = 10; // ANTENA PIN

void toneRadio(unsigned long dTime) {
    pinMode (ANTENNA, OUTPUT);
    delayMicroseconds(dTime);
    pinMode (ANTENNA, INPUT);
    delayMicroseconds(dTime);
}

void setup() {
 dahLen = 175; // LENGTH OF DAH IN MS
 Serial.begin(9600); // BEGINS THE MONOLOGUE
 TCCR1A = _BV (COM1A0);  // toggle OC1A on Compare Match
 TCCR1B = _BV(WGM12) | _BV(CS10);   // CTC, no prescaler
 OCR1A =  9;       // compare A register value to 10 (zero relative)
 pinMode(2, INPUT_PULLUP);
 pinMode(3, INPUT_PULLUP);
 pinMode(13, OUTPUT);
 pinMode(9, OUTPUT);
}

void loop() {
  if(digitalRead(2) == 0 && !wasPressed)
  {
    tone(9, 400); // MAKES THE 'BEE' SOUND
    digitalWrite(13, 1); // MAKES LED TURN ON
    t2 = millis();
    wasPressed = true;
  }
  while(digitalRead(2)  == 0)
    toneRadio(1136);
  if(digitalRead(2) == 1 && wasPressed)
  {
    noTone(9); // SHUTS UP THE 'BEE' SOUND
    digitalWrite(13, 0); // SHUTS UP THE LED
    t1 = millis(); // SETS THE VALUE t1 TO millis()
    T12 = millis(); // SETS THE NEW VALUE TO T2
    T13 = millis(); // SETS THE T13
    len = t1 - t2; // COUNTS THE PRESS LENGTH
    wasPressed = false;
  }
  if(!noobMode) // IF OPERATOR IN NOT A NOOB
    if ((millis() - T12) > ((dahLen / 3) * 7)*3 && lastChar != ' '){ // IF THE TIME HAS PASSED AND THE SPACE IS NOT ADDED ALREADY
      Serial.print(" "); // PRINTS THE SPACE AND TIME MAP
      string += ' '; //ADDS THE SPACE
      lastChar = ' '; // ADDS THE SPACE
      T12 = millis(); // RESETS THE T12 VALUE BY READING THE CURRENT TIME FROM THE PROGRAM STARTED IN THE WORNLD WE EXIST IN
    }
  if ((millis() - T13) > (dahLen*3)){
    convert(); // SUMMONS THE DEVIL TO DECODE THE MORSE
    u8g.firstPage();  //KILLS THE BATMAN
        do {
          u8g.setFont(u8g_font_6x12); // SMALL FONT
          u8g.setPrintPos(0, 10); // SETS THE PRINTING POSITION
          u8g.print(string); //PRINTS THE STRING
        } while( u8g.nextPage() );
    T13 = millis(); // RESETS THE T13 VALUE BY READING THE CURRENT TIME FROM THE PROGRAM STARTED IN THE WORNLD WE EXIST IN
  }
  if (len > (dahLen / 3))
  {
    codeReaded = readCode(); //READS THE CODE
    code += codeReaded; // ADDS THE CODE TO THE CODE TO READ THE CODE AND BECOME SMARTER
    u8g.firstPage();   // SENDS THE JUMPSCARE TO THE SCREEN
        do {
          u8g.setFont(u8g_font_6x12); // SMALL FONT
          u8g.setPrintPos(0, 10); // SETS THE PRINTING POSITION
          u8g.print(string); //PRINTS THE STRING
          u8g.setFont(u8g_font_fur49n); // HUGE FONT
          u8g. setPrintPos(0, 40);
          u8g.print(code); //PRINTS THE CODE
        } while( u8g.nextPage() );
    len = 0; t1 = 0; t2 = 0; // RESETS THE VALUES OF TIME AND SPACE CONTINUUM IN 4D SPACE
  }
  if(digitalRead(3) == 0){
    noobMode = !noobMode; //MAKES NO SPACES AT THE TIME COMES;
  }
}

char readCode()
{
  if (len < dahLen && len > (dahLen / 3)) //CHECK THE SIGNAL LENGTH [IF IT IS NOT LONGER THAN THE DAH SHOULD BE BUT LONGER THAN THE DIT]
    return '.';
  if (len > dahLen) //CHECK THE SIGNAL LENGTH [IF IT IS LONGER THAN THE DAH SHOULD BE]
    return '-';
}

void convert()
{
  static String letters[] = {".-", "-...", "-.-.", "-..", ".", "..-.", "--.", "....", "..", ".---", "-.-", ".-..", "--", "-.", "---", ".--.", "--.-",
                             ".-.", "...", "-", "..-", "...-", ".--", "-..-", "-.--", "--..", ".-.-.-", "--..--", "-----", ".----", "..---", "...--",
                             "....-", ".....", "-....", "--...", "---..", "----.", "---.", "..--..", ".--.-.", "---...", ".----.", "-....-", "-..-.",
                             ".-..-.", "-...-", "W"
                            }; // ARRAY OF MORSE
  static char Alphabet[] = {'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', '!', '?', '@', ':', '\'', '-', '/', '"', '='
                           }; // ARRAY OF ENGLISH CHARS
  int i = 0; // SET THE index TO 0

  if(code == "-----."){ // IF CODE IS -----. ...
    string = ""; // ... CLEAR THE STRING
    Serial.println(""); //BLEAK THE LINE IN SM
  }
    while (letters[i] != "W") // WHILE NOT ARRAY ENDED [COULD BE MADE A LOT BETTER BUT I DON'T HAVE A TIME]
    {
      if (letters[i] == code) // IF THE CODE MATCHES...
      {
        lastChar = Alphabet[i]; // ...ASSIGN lastChar
        Serial.print(Alphabet[i]); // ...SHOW IT IN THE SM
        string += lastChar; // ...ADD IT TO THE STRING TO DISPLAY ON THE SCREEN
        break; // BREAKS THE WHILE 'COZ WE DON'T NEED IT ANYMORE
      }
      i++; // GROW UP
    }
  code = ""; // THE CODE IS CONVERTED TO THE LETTER; NOW WE HAVE TO CLEAR THE CODE
}