LCDcodesample.ino

// C++ code
//
const int RS = 13;
const int E = 12;
const int DB4 = 11;
const int DB5 = 10;
const int DB6 = 9;
const int DB7 = 8;

void setup()
{
  pinMode(RS,  OUTPUT);
  pinMode(E,   OUTPUT);
  pinMode(DB4, OUTPUT);
  pinMode(DB5, OUTPUT);
  pinMode(DB6, OUTPUT);
  pinMode(DB7, OUTPUT);
  //initialize
  initlcd();
  sent(1,0,0,1,0); sent(1,0,0,0,1); //H
  sent(1,0,0,1,0); sent(1,1,0,0,1); //I
  writeAlpha(' ');
  writeAlpha('A');
  writeAlpha('B');
  writeAlpha('C');
}

void loop()
{

}
void initlcd()
{
  sent(0,0,1,0,0);
  sent(0,0,0,0,0); sent(0,1,0,0,0);
  sent(0,0,0,0,0); sent(0,0,1,0,0);
  sent(0,0,0,0,0); sent(0,0,0,1,1);

}

void writeAlpha(char ch)
{
  switch(ch){
    //0010 0000
    case ' ': sent(1,0,1,0,0); sent(1,0,0,0,0);  break;
    //
    case 'A': sent(1,0,0,1,0); sent(1,1,0,0,0);  break;
    //0100 0010
    case 'B': sent(1,0,0,1,0); sent(1,0,1,0,0);  break;
    //0100 0011
    case 'C': sent(1,0,0,1,0); sent(1,1,1,0,0);  break;
  }
}

void sent(int rs,int db4,int db5,int db6,int db7)
{
  digitalWrite(RS,rs);
  delay(10);
  digitalWrite(DB4,db4);
  digitalWrite(DB5,db5);
  digitalWrite(DB6,db6);
  digitalWrite(DB7,db7);
  delay(10);
  digitalWrite(E,0);
  delay(10);
  digitalWrite(E,1);
  delay(10);
  digitalWrite(E,0);
  delay(10);
}