/*
4bit interface Character LCD module Test Program
MPU:Microchip PIC 16F84A
Programer : PICkit2

				+-------U-------+
R/W(LCD_PIN5)<--|RA2		RA1	|-->RS(LCD_PIN4)
				|RA3		RA0	|-->E(LCD_PIN6)
				|RA4		OSC1|<--4MHz
	  	  +5V===|/MCLR		OSC2|-->
	  	  GND===|Vss		Vdd	|===+5V
	  			|RB0		RB7	|-->DB7
	  			|RB1		RB6	|-->DB6
	  			|RB2		RB5	|-->DB5
	  			|RB3		RB4	|-->DB4
				+---------------+			

Other LCD bus line(DB0~DB3) be connected to GND.
*/

#include <16F84A.h>
#fuses HS, NOWDT, PUT, NOPROTECT
#use delay (clock=4000000)

#include "C1604_4bit_interface.c" 
    
//=================================== 
void main() 
{ 
int8 i,j;
int8 b1, b2, b3, b4; 

// The lcd_init() function should always be called once, 
// near the start of your program. 
lcd_init(); 

// Clear the LCD. 
printf(lcd_putc, "\f"); 
//delay_ms(500); 

//Set CGRAM (8 chracters made by user)
ext_char_set(); 

while(1)
	{ 
   // Test the clear screen and newline commands. 
   // Also test that we can write to all 4 lines. 
	printf(lcd_putc, "\fThis is 1st line");
	printf(lcd_putc, "\nNext is 2nd line");
	printf(lcd_putc, "\nThis is 3rd line");
	printf(lcd_putc, "\nFinally 4th line");
	delay_ms(3000);
	
	// Display CGRAM Chracter
	printf(lcd_putc, "\fCGRAM chracter\n");
	lcd_send_byte(1,0x00);
	lcd_send_byte(1,0x01);
	lcd_send_byte(1,0x02);
	lcd_send_byte(1,0x03);
	lcd_send_byte(1,0x04);
	lcd_send_byte(1,0x05); 
	lcd_send_byte(1,0x06); 
	lcd_send_byte(1,0x07);
	delay_ms(3000);  

/*
   // Test some additional characters. 
   printf(lcd_putc, "\fABCDEFGhijklmnop");  
   printf(lcd_putc, "\n1234567890123456"); 
   printf(lcd_putc, "\n!@#$^&*(){}[]:;<"); 
   printf(lcd_putc, "\n±²³´µ¶Þ·Þ¸ÞÊßËß­");
   delay_ms(3000);
*/ 

   // Clear the LCD. 
   printf(lcd_putc, "\f"); 
   delay_ms(500); 

   // Test that lcd_gotoxy() works.  Go to each of 
   // the four corners and put a number in each one, 
   // in a clockwise direction, starting with the upper 
   // left corner. 
   lcd_gotoxy(2, 2);        
   printf(lcd_putc, "Show 4 corners");       
   lcd_gotoxy(1, 1);        
   printf(lcd_putc, "1");    
   lcd_gotoxy(16, 1);        
   printf(lcd_putc, "2");    
   lcd_gotoxy(16, 4);        
   printf(lcd_putc, "3");    
   lcd_gotoxy(1, 4);        
   printf(lcd_putc, "4");    
   delay_ms(3000); 

// Read the character that was written in each corner 
// of the LCD and display it.   This tests the lcd_getc() 
// function.    
// The following test can only be done if we can read 
// from the LCD.  If the RW pin is not used, then the 
// LCD is in write-only mode, and we can't do this test. 
// The #ifdef statement will prevent the code from 
// being compiled, in that case. 

#ifdef USE_RW_PIN    
   // Test if lcd_getc() can read 
   // a byte from each corner. 
   b1 = lcd_getc(1,1);    
   b2 = lcd_getc(16,1);    
   b3 = lcd_getc(16,4);    
   b4 = lcd_getc(1,4);    
   lcd_gotoxy(1, 1);        
   printf(lcd_putc, "\fRead these bytes\n"); 
   printf(lcd_putc, "from 4 corners:\n\n"); 
   printf(lcd_putc, "     %c %c %c %c", b1, b2, b3, b4);        
   delay_ms(3000); 
#endif 


//The bellow code cannot be compiled because the memory is over.

   // Type some characters and backspace over them. 
   printf(lcd_putc,"\fSantechDisplay\n"); 
   printf(lcd_putc,"CharLCM:C1604A\n");
   printf(lcd_putc,"Test Program\n");
   printf(lcd_putc,"controll by PIC");
   delay_ms(5000); 
/*
for (j=4;j>0;j--)
	{
   
   // Go to end of 2nd line.                   
   lcd_gotoxy(16, j);        

   // Backspace over 2nd line. 
   for(i = 0; i < 16; i++) 
      { 
       printf(lcd_putc," \b\b"); 
       delay_ms(50); 
      }   
	}
  
*/  
}
}