morse-code-translator/morse_code_translator.ino at main · ModuleDaner/morse-code-translator · GitHub

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struct MorseEntry {
  char character;
  const char* morse;
};

MorseEntry morseTable[] = {
  {'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', "----."},

  {'.', ".-.-.-"}, {',', "--..--"}, {'?', "..--.."}, {'\'', ".----."},
  {'!', "-.-.--"}, {'/', "-..-."}, {'(', "-.--."}, {')', "-.--.-"},
  {'&', ".-..."}, {':', "---..."}, {';', "-.-.-."}, {'=', "-...-"},
  {'+', ".-.-."}, {'-', "-....-"}, {'_', "..--.-"}, {'\"', ".-..-."},
  {'@', ".--.-."}, {' ', "/"}
};

String morseDecode(String text) {
  String morse = "";

  text.toLowerCase();

  for (char c : text) {
    for (int i = 0; i < (sizeof(morseTable) / sizeof(MorseEntry)); ++i) {
      if (morseTable[i].character == c) {

        morse.concat(morseTable[i].morse);

        if (morseTable[i].morse == "/") {
          morse.remove(morse.length()-2, 1);
        } else {
          morse.concat(" ");
        };
      };
    };
  };

  return morse;
}

void setup() {
  pinMode(13, OUTPUT);
  digitalWrite(13, LOW);

  String text = "peace be upon you, the plan is to kill my self";

    double speed = 1; // default: 1
    const int baseDotDuration = 100/speed;
    const int baseDashDuration = 300/speed;
    const int baseDotDashDuaration = 100/speed;
    const int baseInterCharGap = 300/speed;
    const int baseInterWordGap = 700/speed;

  String morse = morseDecode(text);

  for (char c : morse) {
    if (c == '.') {
      digitalWrite(13, HIGH);
      delay(baseDotDuration);
      digitalWrite(13, LOW);
      delay(baseDotDashDuaration);
    } else if (c == '-') {
      digitalWrite(13, HIGH);
      delay(baseDashDuration);
      digitalWrite(13, LOW);
      delay(baseDotDashDuaration);
    } else if (' ') {
      digitalWrite(13, LOW);
      delay(baseInterCharGap);
    } else if ('/') {
      digitalWrite(13, LOW);
      delay(baseInterWordGap);
    }
  };
};

void loop() {};