#include "pitches.h"
// Define the pin where the buzzer is connected
const int LEDpin = 13;

// Define Morse code timing for 20 WPM
const int dotDuration = 60;         // 60 ms for dot
const int dashDuration = 180;       // 180 ms for dash
const int intraCharSpace = 60;      // 60 ms between parts of the same letter
const int interCharSpace = 180;     // 180 ms between letters
const int wordSpace = 420;          // 420 ms between words

void setup() {
  // Set the buzzer pin as an output
  pinMode(LEDpin, OUTPUT);
  Serial.begin(115200); // Any baud rate should work
  Serial.println("Hello Arduino\n");
}

void loop() {
  // Morse code for GW7HDX
  sendMorse("G");

  // Wait for 2 seconds before repeating the sequence
  delay(2000);
}

void sendMorse(String message) {
  for (int i = 0; i < message.length(); i++) {
    char c = message.charAt(i);
     Serial.println(c);
    sendMorseChar(c);

    // Space between letters
    if (i < message.length() - 1) {
      delay(interCharSpace);
    }
  }
}

void sendMorseChar(char c) {
  switch (c) {
    case 'G': sendDash(); sendDash(); sendDot(); break;
    case 'W': sendDot(); sendDash(); sendDash(); break;
    case '7': sendDash(); sendDash(); sendDot(); sendDot(); sendDot(); break;
    case 'H': sendDot(); sendDot(); sendDot(); sendDot(); break;
    case 'D': sendDash(); sendDot(); sendDot(); break;
    case 'X': sendDash(); sendDot(); sendDot(); sendDash(); break;
  }
}

void sendDot() {
  Serial.println("Dot");
  digitalWrite(LEDpin, HIGH);
  tone(8,500,dotDuration);
  
  digitalWrite(LEDpin, LOW);
  delay(intraCharSpace);
}

void sendDash() {
  Serial.println("Dash");
  digitalWrite(LEDpin, HIGH);
  tone(8,500,dashDuration);
  digitalWrite(LEDpin, LOW);
  delay(intraCharSpace);
}