Arduino: 1337 7segment

l33t seg.ino

// CONST's
int DS_pin = 8;
int STCP_pin = 9;
int SHCP_pin = 10;

int C1_pin = 1;
int C2_pin = 2;
int C3_pin = 3;
int C4_pin = 4;

// 8 LED Registers
boolean registers[8];

int DELAY = 300;

// VALUES {0,1,2,3,4,5,6,7,8,9}
int numbers[] = {0x3F, 0x06, 0x5B, 0x4F, 0x66, 0x6D, 0x7C, 0x07, 0x7F, 0x67};

int char_a = 0x77;
int char_b = 0x7C;
int char_c = 0x39;
 int char_d = 0x5E;
int char_e = 0x79;
int char_f = 0x71;
int char_g = 0x6F;
int char_h = 0x36;
 int char_i = 0x06;
 int char_j = 0x0E;
// int char_k = 0x00;
int char_l = 0x38;
// int char_m = 0x00;
int char_n = 0x54;
int char_o = 0x5C;
int char_p = 0x73;
 int char_q = 0xE7;
 int char_r = 0x50;
 int char_s = 0x6D;
 int char_t = 0x70;
int char_u = 0x3E;
// int char_v = 0x00;
// int char_w = 0x00;
// int char_x = 0x00;
 int char_y = 0x6E;
 int char_z = 0x5B;
int symb_qm = 0x53;
int symb_dot = 0x80;
int symb_space = 0x00;


int counter = -1;

int segmentgroups[] = {C1_pin, C2_pin, C3_pin, C4_pin};
int currentsegment = 0;

void setup()
{  
  // Configure output pins
  pinMode(DS_pin,OUTPUT);
  pinMode(STCP_pin,OUTPUT);
  pinMode(SHCP_pin,OUTPUT);

  pinMode(C1_pin, OUTPUT);
  pinMode(C2_pin, OUTPUT);
  pinMode(C3_pin, OUTPUT);
  pinMode(C4_pin, OUTPUT);

  Serial.begin(9600);

  prepareMessage("bong!");
  
  digitalWrite(segmentgroups[currentsegment], HIGH);
  writereg();
}

// Writes the LED registers to the Shift-register
void writereg()
{
  // Prepare to write new data
  digitalWrite(STCP_pin, LOW);
  for (int i = 7; i>=0; i--)
  {
    // Prepare for bit
    digitalWrite(SHCP_pin, LOW);
    // Write bit
    digitalWrite(DS_pin, registers[i] );
    // Done writing bit
    digitalWrite(SHCP_pin, HIGH);
  }
  // Done writing new data
  digitalWrite(STCP_pin, HIGH);
}

void fillreg(int hexcode)
{
  //Convert Hex to Binary & populate registers[] with Binary
  for(int i = 0; i < 8; i++){
    registers[i] = !bitRead(hexcode, i);
  }
}

void writetopanel(int character, int panel)
{
  fillreg(character);
  digitalWrite(panel, HIGH);
  writereg();
  delay(5);
  digitalWrite(panel, LOW);  
}

void write_word(int char_1, int char_2, int char_3, int char_4){
  
  writetopanel(char_1 , C1_pin);
  writetopanel(char_2 , C2_pin);
  writetopanel(char_3 , C3_pin);
  writetopanel(char_4 , C4_pin);
}

void delayWord(int char_1, int char_2, int char_3, int char_4, int interval){
  for(int i = 0; i < interval; i++){
    write_word(char_1, char_2, char_3, char_4);
  }
}

void scrollWord(int char_1, int char_2, int char_3, int char_4, int delayInterval){
  delayWord(char_1 , char_2, char_3, char_4, delayInterval);
  delayWord(char_2, char_3, char_4, symb_space, delayInterval);
  delayWord(char_3, char_4, symb_space, char_1, delayInterval);
  delayWord(char_4, symb_space, char_1 , char_2,delayInterval);
  delayWord(symb_space, char_1 , char_2, char_3, delayInterval);
}

//Bong -> bong (toLowerCase)
//'bong' -> ['b', 'o', 'n', 'g']


// ['b', 'o', 'n', 'g'] -> [char_b , char_o, char_n, char_g]


const int MAXMESSAGE = 50;
int outputArray[MAXMESSAGE];

void convertToCharArray(String message){
  char charBuf[MAXMESSAGE];
  message.toCharArray(charBuf, MAXMESSAGE);
  
  for(int i = 0; i<MAXMESSAGE; i++){
    char character = charBuf[i];
    if(character == '!') return;
    outputArray[i] = converttochar(character);
  }
}

//void convertToCharArray(char[] *inputArray ){
//  int arrayLen = sizeof(charArray) / sizeof(char); 
//  int[arrayLen] output;
//  for (int i = 0; i<arrayLen; i++){
//    output[i] = converttochar(charArray[i]);
//  }
//  return output;
//}

// b -> char_b
int converttochar(char input){
  switch(input){
    case 'a' : return char_a;
    case 'b' : return char_b;
    case 'c' : return char_c;
    case 'd' : return char_d;
    case 'e' : return char_e;
    case 'f' : return char_f;
    case 'g' : return char_g;
    case 'h' : return char_h;
    case 'i' : return char_i;
    case 'j' : return char_j;
    case 'l' : return char_l;
    case 'n' : return char_n;
    case 'o' : return char_o;
    case 'p' : return char_p;
    case 'q' : return char_q;
    case 'r' : return char_r;
    case 's' : return char_s;
    case 't' : return char_t;
    case 'u' : return char_u;
    case 'y' : return char_y;
    case 'z' : return char_z;     
    default: return symb_space;
  }
}

char msgBuffer[4];
void prepareMessage(String message){
  convertToCharArray(message);
  for(int i = 0; i < MAXMESSAGE; i++)
  {
    int character = outputArray[i];
    if(character == NULL) return;
    for(int i = 0; i < 4; i++){
      msgBuffer[i] = outputArray[i];
    }
  }
}

int delayInterval = 20;
void loop()
{
  scrollWord(msgBuffer[0], msgBuffer[1], msgBuffer[2], msgBuffer[3], delayInterval);
}