MorseCodeComplete.ino

#include <string.h>

// Morse code dictionary for ASCII characters (A-Z, 0-9, space, slash)
const char* morseTable[38] = {
  ".-", "-...", "-.-.", "-..", ".", "..-.", "--.", "....", "..", ".---",
  "-.-", ".-..", "--", "-.", "---", ".--.", "--.-", ".-.", "...", "-",
  "..-", "...-", ".--", "-..-", "-.--", "--..", // A-Z
  "-----", ".----", "..---", "...--", "....-", ".....", "-....", "--...", "---..", "----.", // 0-9
  " ", "/" // Space and slash
};

void setup() {
  pinMode(13, OUTPUT);
  Serial.begin(9600); // Initialize serial communication
}

void loop() {
  if (Serial.available() > 0) {
    char input[100];
    int i = 0;

    // Read the ASCII text from serial
    while (Serial.available() > 0 && i < 99) {
      input[i] = Serial.read();
      i++;
      delay(10); // Delay to ensure proper input capture
    }
    input[i] = '\0'; // Null-terminate the string

    // Process each character and flash its Morse code
    for (int j = 0; input[j] != '\0'; j++) {
      flashMorse(input[j]);
    }
  }
}

// Function to find Morse code for a character
const char* getMorse(char c) {
  if (c >= 'A' && c <= 'Z') {
    return morseTable[c - 'A']; // Map uppercase letters
  } else if (c >= 'a' && c <= 'z') {
    return morseTable[c - 'a']; // Map lowercase letters
  } else if (c >= '0' && c <= '9') {
    return morseTable[c - '0' + 26]; // Map digits 0-9
  } else if (c == ' ') {
    return morseTable[36]; // Space
  } else if (c == '/') {
    return morseTable[37]; // Slash
  }
  return ""; // Unknown characters
}

// Function to flash Morse code for a character
void flashMorse(char c) {
  const char* morse = getMorse(c);

  // Print the character and its Morse code
  Serial.print("Character: ");
  Serial.print(c);
  Serial.print(" -> Morse: ");
  Serial.println(morse);

  for (int i = 0; morse[i] != '\0'; i++) {
    if (morse[i] == '.') {
      digitalWrite(13, HIGH);
      delay(200); // Dot duration
      digitalWrite(13, LOW);
      delay(200); // Gap after dot
    } else if (morse[i] == '-') {
      digitalWrite(13, HIGH);
      delay(600); // Dash duration
      digitalWrite(13, LOW);
      delay(200); // Gap after dash
    }
  }
  delay(600); // Gap between characters
}