const int BUZZER_PIN = 4;  // Connect buzzer to GPIO 4
const int DOT_DURATION = 300;  // Duration of a dot in milliseconds
const int DASH_DURATION = 900;  // Dash is 3 times the dot duration
const int INTER_ELEMENT_GAP = 300;  // Gap between dots and dashes
const int INTER_LETTER_GAP = 900;  // Gap between letters
const int INTER_WORD_GAP = 2100;  // Gap between words

// Morse code patterns for A-Z
const char* MORSE_CODE[] = {
    ".-",   // 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
};

void setup() {
    pinMode(BUZZER_PIN, OUTPUT);
    Serial.begin(115200);
    Serial.println("Text to Morse Code Converter");
    Serial.println("Enter text to convert to Morse Code (e.g., 'ABC'):");

    // Example text to convert (replace this with any string you'd like)
    String inputText = "ABC";  // Change this to any text you want to convert

    convertTextToMorse(inputText);  // Convert and play the Morse code
}

void playDot() {
    tone(BUZZER_PIN, 1000);  // Play tone at 1000 Hz
    delay(DOT_DURATION);  // Wait for dot duration
    noTone(BUZZER_PIN);  // Stop the tone
    delay(INTER_ELEMENT_GAP);  // Wait for the gap between elements
}

void playDash() {
    tone(BUZZER_PIN, 1000);  // Play tone at 1000 Hz
    delay(DASH_DURATION);  // Wait for dash duration
    noTone(BUZZER_PIN);  // Stop the tone
    delay(INTER_ELEMENT_GAP);  // Wait for the gap between elements
}

void playMorseChar(char c) {
    if (c >= 'A' && c <= 'Z') {
        const char* morse = MORSE_CODE[c - 'A'];  // Get the corresponding Morse code
        Serial.print("Morse for ");
        Serial.print(c);
        Serial.print(": ");
        Serial.println(morse);

        // Play the Morse code for the character
        for (int i = 0; morse[i] != '\0'; i++) {
            if (morse[i] == '.') {
                playDot();  // Play dot
            } else if (morse[i] == '-') {
                playDash();  // Play dash
            }
        }
        delay(INTER_LETTER_GAP);  // Gap between letters
    } else if (c == ' ') {
        delay(INTER_WORD_GAP);  // Gap between words
    }
}

void convertTextToMorse(String text) {
    text.toUpperCase();  // Convert text to uppercase

    for (int i = 0; i < text.length(); i++) {
        char c = text.charAt(i);
        playMorseChar(c);  // Convert and play Morse code for each character
    }
}

void loop() {
    // No need to do anything in the loop
}