// DIO Braille sequencer version 2 - for use with Braille Key (LEDs represent plungers)
// https://forum.arduino.cc/t/using-arduino-and-shift-register-74hc595-for-braille-project/1373221/

#define MONITO 0 // use defined array of characters
// #define MONITOR 1 // use serial monitor for input

char helloWorld[] = "HELLO WOKWI";
int helloWorldSize = sizeof(helloWorld) / sizeof(helloWorld[0]);

byte ledPin[] = {11, 10, 9, 3, 4, 5}; // pins
int ledCount = sizeof(ledPin) / sizeof(ledPin[0]); // number of pins
int playbackRate = 250;

int alphanu[] = {
  //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
  1,   3,  9, 25, 17, 11, 27, 19, 10, 26,  5,  7, 13, 29, 21, 15, 31, 23, 14, 30, 37, 39, 58, 45, 61, 53,

  // Number follows 111100 (60)
  60,
  // 1/A 2/B 3/C 4/D 5/E 6/F 7/F 8/G 9/H 10/I
  1,      3,  9,  25, 17, 11, 27, 19, 10, 26
};

void setup() {
  Serial.begin(115200); // start serial communications

  for (int i = 0; i < ledCount; i++) // count through LED pins
    pinMode(ledPin[i], OUTPUT); // configure pins for OUTPUT
}

void loop() {
  for (int letter = 0; letter < helloWorldSize-1; letter++) {
    Serial.print(helloWorld[letter]);
    int letnumVal = helloWorld[letter] - 65;
    for (int i = 0; i < 6; i++)
      digitalWrite(ledPin[i], bitRead(alphanu[letnumVal], i));
    delay(playbackRate);
    for (int i = 0; i < 6; i++)
      digitalWrite(ledPin[i], LOW);
    delay(playbackRate);
  }
  Serial.println();
  delay(2000);
}

/*
   POSITIONS - in columns, left to right
   1 oo 4
   2 oo 5
   3 oo 6

   BITS - right to left positions 654321 (decimal equivalent)
   A 000001 ( 1) F 001011 (11) K 000101 ( 5) P 001111 (15) U 100101 (37) Z 110101 (53)
   B 000011 ( 3) G 011011 (27) L 000111 (17) Q 011111 (31) V 100111 (39)
   C 001001 ( 9) H 010011 (19) M 001101 (13) R 010111 (23) W 111010 (58)
   D 011001 (25) I 001010 (10) N 011101 (29) S 001110 (14) X 101101 (45)
   E 010001 (17) J 011010 (26) O 010101 (21) T 011110 (30) Y 111101 (61)

  Number follows 111100 (60)
   0 011010 (26/J) 1 000001 ( 1/A) 2 000011 ( 3/B) 3 001001 ( 9/C) 4 011001 (25/D)
   5 010001 (17/E) 6 001011 (11/F) 7 011011 (27/G) 8 010011 (19/H) 9 001010 (10/I)

   Number follows 111100 Capital follows 100000
   period         110010 comma           000010
   colon          010010 apostrophe      000100
   question       100110 asterisk/mult   010100
   slash/div      001100 equal           110110
   exclamation    010110 parenthesis     110110
   plus           010110 minus           010010
   openquote      100110 closequote      110100
*/