//LCD RS pin to digital pin 12
//LCD Enable pin to digital pin 2
//LCD D0 pin to digital pin 3
//LCD D1 pin to digital pin 4
//LCD D2 pin to digital pin 5
//LCD D3 pin to digital pin 6
//LCD D4 pin to digital pin 7
//LCD D5 pin to digital pin 8
//LCD D6 pin to digital pin 9
//LCD D7 pin to digital pin 10
//LCD R/W pin to digital pin 11
//LCD VSS pin to ground
//LCD VCC pin to 5V
//LCD K pin to ground
//LCD A pin to 5V
//LCD V0 pin to 10K resistor:
//ends to +5V and ground

 
int DI = 12;
int RW = 11;
int DB[] = {3, 4, 5, 6, 7, 8, 9, 10};//Use an array to define the pins 
int Enable = 2;
 
void LcdCommandWrite(int value) {
 // Define all pins
 int i = 0;
 for (i=DB[0]; i <= DI; i++) //Assignment
{
   digitalWrite(i,value & 01);//Because 1602 LCD signal identification is D7-D0 (not D0-D7), here is used to invert the signal.
   value >>= 1;
 }
 digitalWrite(Enable,LOW);
 delayMicroseconds(1);
 digitalWrite(Enable,HIGH);
 delayMicroseconds(1);  
 digitalWrite(Enable,LOW);
 delayMicroseconds(1);  
}
 
void LcdDataWrite(int value) {
 // Define all pins
 int i = 0;
 digitalWrite(DI, HIGH);
 digitalWrite(RW, LOW);
 for (i=DB[0]; i <= DB[7]; i++) {
   digitalWrite(i,value & 01);
   value >>= 1;
 }
 digitalWrite(Enable,LOW);
 delayMicroseconds(1);
 digitalWrite(Enable,HIGH);
 delayMicroseconds(1);
 digitalWrite(Enable,LOW);
 delayMicroseconds(1);  
 }
void setup (void) {
 int i = 0;
 for (i=Enable; i <= DI; i++) {
   pinMode(i,OUTPUT);
 }
 delay(100);
 // Initialize the LCD
 LcdCommandWrite(0x38);  // Set to 8-bit interface, 2 lines display, 5x7 text size                    
 delay(64);                      
 LcdCommandWrite(0x38);  // Set to 8-bit interface, 2 lines display, 5x7 text size                      
 delay(50);                      
 LcdCommandWrite(0x38);  // Set to 8-bit interface, 2 lines display, 5x7 text size                     
 delay(20);                      
 LcdCommandWrite(0x06);  // Input method setting
                         // Auto increment, no shift is displayed
 delay(20);                      
 LcdCommandWrite(0x0E);  // display setting
                         // Turn on the display, the cursor shows, no flicker
 delay(20);                      
 LcdCommandWrite(0x01);  // The screen is empty and the cursor position is zeroed
 delay(100);                      
 LcdCommandWrite(0x80);  // display setting
                         //Turn on the display, the cursor shows, no flicker

 delay(20);                      
}
 
void loop (void) {
  LcdCommandWrite(0x01);  // The screen is empty and the cursor position is zeroed 
  delay(10); 
  LcdCommandWrite(0x80+3); 
  delay(10);                     
  // Write information
  LcdDataWrite('W');
  LcdDataWrite('e');
  LcdDataWrite('l');
  LcdDataWrite('c');
  LcdDataWrite('o');
  LcdDataWrite('m');
  LcdDataWrite('e');
  LcdDataWrite(' ');
  LcdDataWrite('t');
  LcdDataWrite('o');
  delay(10);
  LcdCommandWrite(0xc0+3);  // Define the cursor position as the third position of the second line
  delay(10); 
  LcdDataWrite('R');
  LcdDataWrite('e');
  LcdDataWrite('x');
  LcdDataWrite('q');
  LcdDataWrite('u');
  LcdDataWrite('a');
  LcdDataWrite('l');
  LcdDataWrite('i');
  LcdDataWrite('s');
  delay(5000);
  LcdCommandWrite(0x01);  // The screen is empty and the cursor position is zeroed
  delay(10);
  LcdCommandWrite(0x80+2); //Define the cursor position as the second position of the first line
  delay(10);  
  LcdDataWrite('M');
  LcdDataWrite('a');
  LcdDataWrite('k');
  LcdDataWrite('e');
  LcdDataWrite(' ');
  LcdDataWrite('S');
  LcdDataWrite('c');
  LcdDataWrite('i');
  LcdDataWrite('e');
  LcdDataWrite('n');
  LcdDataWrite('c');
  LcdDataWrite('e'); 
  delay(10);
  LcdCommandWrite(0xc0+6);  // Define the cursor position as the sixth position of the second line  
  delay(10); 
  LcdDataWrite('F');
  LcdDataWrite('u');
  LcdDataWrite('n');
 
  delay(5000);
  LcdCommandWrite(0x01);  // The screen is empty and the cursor position is zeroed  
  delay(10);
  LcdCommandWrite(0x80+2); ////Define the cursor position as the second position of the first line
  delay(10);
  LcdDataWrite('M');
  LcdDataWrite('a');
  LcdDataWrite('k');
  LcdDataWrite('e');
  LcdDataWrite(' ');
  LcdDataWrite('S');
  LcdDataWrite('c');
  LcdDataWrite('i');
  LcdDataWrite('e');
  LcdDataWrite('n');
  LcdDataWrite('c');
  LcdDataWrite('e'); 
  delay(10);
  LcdCommandWrite(0xc0+4);  // Define the cursor position as the fourth position of the second line  
  delay(10); 
  LcdDataWrite('P');
  LcdDataWrite('o');
  LcdDataWrite('p');
  LcdDataWrite('u');
  LcdDataWrite('l');
  LcdDataWrite('a');
  LcdDataWrite('r');
  delay(5000); 
  
}