import processing.serial.*;

Serial port;

char[] inData = new char[20]; // Allocate some space for the string
char inChar; // Where to store the character read
byte index = 0; // Index into array; where to store the character
int val;

char[] getData = new char[100];
char KeyData;
int charPos=0;

String display;

void setup()
{
  size(510,500);
  port = new Serial(this,Serial.list()[5],9600);
  println(Serial.list());
   background(0);
}

void draw()
{
    
 if (port.available()>0)
  {
     if(index < 19) 
      {
          inChar = char(port.read()); 
          if (inChar == '#')
          inData[index] = ' ';
          else
          inData[index] = inChar; 
          index++; 
          inData[index] = ' ';    
      }
  }
  
  if (inChar == '#')
  {
 // println(str(inData));
printString();  
index=0;
port.clear();
}
}

void printString()
{
  fill(100);
  rect(0,height/2,width,height/2);
   int x=width/8, y= height -(height/4);  
   for(int j=0; j<20; j++)
   {
     fill(255);
   text(inData[j], x+j*10, y);
 }
}


void keyPressed() {
  int keyIndex = -1;
  
  if(key== ' ')
    {
      keyIndex=-33;
    }
    
  if (key >= 'A' && key <= 'Z') {
    keyIndex = key - 'A';
  } else if (key >= 'a' && key <= 'z') {
    keyIndex = key - 'a';
  }
  
  if (keyIndex == -1) 
  {
    ToprintString();
    clearString();
    charPos=0;  
  } 
  
  else 
  { 
    fill(255);
    KeyData = char(keyIndex+65);
    if(keyIndex!=-1)
    {
    getData[charPos] = KeyData;
    charPos++;
    getData[charPos] = '#';
    }
  }
}

void ToprintString()
{
   fill(100,50,50);
  rect(0,0,width,height/2);
   int x=width/8, y= (height/4);  
   for(int j=0; j<=charPos; j++)
   {
     fill(255);
     if (j!=charPos)
   text(getData[j], x+j*10, y);
   print(getData[j]);
   port.write(getData[j]);
 }
}

void clearString()
{
  for (int reset=0; reset<=charPos; reset++)
  getData[reset] = ':';
}