Morsino

/*
  Morsino
  Flashes the morse code of the clicked letter.
 
  This example code is in the public domain.
 */
 
const int ledPin =  13;       // the number of the LED pin
const int buttonPin = 2;      // the number of the pushbutton pin

void setup() {                
  pinMode(ledPin, OUTPUT);    // initialize the digital pin as an output.
  pinMode(buttonPin, INPUT);  // initialize the pushbutton pin as an input.
}

// The length, in milliseconds, of one unit
const int UNIT = 500;

// Gap duration factors
const int DIT = 1;
const int DAH = 3;
const int ELEMENT_GAP = 1;
const int LETTER_GAP = 3;
const int WORD_GAP = 7;

// ITU Letters
// Kludge: to get around arduino's lack of a .length() function,
// the first item in each array is the number of elements for that character.
const int CHAR_A[] = { 2, DIT, DAH               };
const int CHAR_B[] = { 4, DAH, DIT, DIT, DIT      };
const int CHAR_C[] = { 4, DAH, DIT, DAH, DIT      };
const int CHAR_D[] = { 3, DAH, DIT, DIT           };
const int CHAR_E[] = { 1, DIT                     };
const int CHAR_F[] = { 4, DIT, DIT, DAH, DIT      };
const int CHAR_G[] = { 3, DAH, DAH, DIT           };
const int CHAR_H[] = { 4, DIT, DIT, DIT, DIT      };
const int CHAR_I[] = { 2, DIT, DIT                };
const int CHAR_J[] = { 4, DIT, DAH, DAH, DAH      };
const int CHAR_K[] = { 3, DAH, DIT, DAH           };
const int CHAR_L[] = { 4, DIT, DAH, DIT, DIT      };
const int CHAR_M[] = { 2, DAH, DAH                };
const int CHAR_N[] = { 2, DAH, DIT                };
const int CHAR_O[] = { 3, DAH, DAH, DAH           };
const int CHAR_P[] = { 4, DIT, DAH, DAH, DIT      };
const int CHAR_Q[] = { 4, DAH, DAH, DIT, DAH      };
const int CHAR_R[] = { 3, DIT, DAH, DIT           };
const int CHAR_S[] = { 3, DIT, DIT, DIT           };
const int CHAR_T[] = { 1, DAH                     };
const int CHAR_U[] = { 3, DIT, DIT, DAH           };
const int CHAR_V[] = { 4, DIT, DIT, DIT, DAH      };
const int CHAR_W[] = { 3, DIT, DAH, DAH           };
const int CHAR_X[] = { 4, DAH, DIT, DIT, DAH      };
const int CHAR_Y[] = { 4, DAH, DIT, DAH, DAH      };
const int CHAR_Z[] = { 4, DAH, DAH, DIT, DIT      };
const int CHAR_1[] = { 5, DIT, DAH, DAH, DAH, DAH };
const int CHAR_2[] = { 5, DIT, DIT, DAH, DAH, DAH };
const int CHAR_3[] = { 5, DIT, DIT, DIT, DAH, DAH };
const int CHAR_4[] = { 5, DIT, DIT, DIT, DIT, DAH };
const int CHAR_5[] = { 5, DIT, DIT, DIT, DIT, DIT };
const int CHAR_6[] = { 5, DAH, DIT, DIT, DIT, DIT };
const int CHAR_7[] = { 5, DAH, DAH, DIT, DIT, DIT };
const int CHAR_8[] = { 5, DAH, DAH, DAH, DIT, DIT };
const int CHAR_9[] = { 5, DAH, DAH, DAH, DAH, DIT };
const int CHAR_0[] = { 5, DAH, DAH, DAH, DAH, DAH };


int buttonState = 0;         // variable for reading the pushbutton status

void loop(){
}


// Outputs a letter
void outputLetter(int elements[]) {
  
  int count = sizeof(elements) / sizeof(int);
    
  for (int i = 0; i < count; i++) {
      digitalWrite(ledPin, HIGH);    // turn the LED on
      delay(UNIT * elements[i]);  // leave it on for the length of the element (either dit or dah)
      digitalWrite(ledPin, LOW);     // turn the LED off
      if (i < count - 1) {
        delay(UNIT * ELEMENT_GAP);  // pause between elements
      }
  }
  
  delay(UNIT * LETTER_GAP);
}