2-4tft_hx8347.txt

Program for writing to Newhaven Display 2.4" TFT

//---------------------------------------------------------
/*
2.4in_TFT.c
Program for writing to Newhaven Display 2.4" TFT

(c)2008 Curt Lagerstam - Newhaven Display International, LLC. 

 	This program is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.
*/
//---------------------------------------------------------
#include <at89x51.h>

/**************** I/O Setting **********************/
/*
[DB7..DB0] = [P0_7..P0_0]
[DB15..DB8] = [P1_7..P1_0]
/CS		= P3_4
RS		= P3_5
/WR		= P3_6
/RD		= P3_7
/RESET	= P3_0
*/

#define CS P3_4
#define RS P3_5
#define WR P3_6
#define RD P3_7
#define RESET P3_0

/***************************************************/

void data_out(unsigned char i,unsigned char j) //Data Output 16-bit Bus Interface
{
	RS  = 1;
	RD  = 1;
	WR  = 0;
	P1  = i;
	P0  = j;
	WR  = 1;
}
void comm_out(unsigned char j) //Command Output 8-bit Bus Interface
{
	RS  = 0;
	RD  = 1;
	WR  = 0;
	P0  = j;
	WR  = 1;
}
void data_put(unsigned char i,unsigned char j)
{
	CS  = 0;
	RS  = 1;
	RD  = 1;
	P1  = i;
	P0  = j;

}
/****************************************************/
void delay(unsigned int n)
{
	unsigned int i,j;
	for (i=0;i<n;i++)
  		for (j=0;j<350;j++)
  			{;}
}
void delay1(unsigned int i)
{
	while(i--);
}
/****************************************************/
void dispPic(unsigned char *picture)
{
	int i,j;
	CS = 0;
	RS = 1;
	for(i=0;i<320;i++)
   		{
     		for(j=0;j<240;j++)
      			{
						P1 = *picture;
						P0 = *(++picture);
						WR = 0;
						picture++;
						WR = 1;
    		 	}
   		}

}
void Fulldisplay(unsigned char d1,unsigned char d2)
{
	int i,j;
    data_put(d1,d2);
    for(i=0;i<320;i++)
    {
       for(j=0;j<240;j++)
          {
           	  	WR = 0;
			WR = 1;
          }
    }
}


/****************************************************
*           Initialization For HX8347               *
*****************************************************/
void resetLCD()
{
	RESET = 0;
	delay(100);
	RESET = 1;
	delay(100);
}
void init_LCD() 
{
	CS = 0;
comm_out(0x46); data_out(0x00,0x94);
comm_out(0x47); data_out(0x00,0x41);
comm_out(0x48); data_out(0x00,0x00);
comm_out(0x49); data_out(0x00,0x33);
comm_out(0x4A); data_out(0x00,0x23);
comm_out(0x4B); data_out(0x00,0x45);
comm_out(0x4C); data_out(0x00,0x44);
comm_out(0x4D); data_out(0x00,0x77);
comm_out(0x4E); data_out(0x00,0x12);
comm_out(0x4F); data_out(0x00,0xCC);

comm_out(0x50); data_out(0x00,0x46);
comm_out(0x51); data_out(0x00,0x82);

comm_out(0x02); data_out(0x00,0x00);
comm_out(0x03); data_out(0x00,0x00);
comm_out(0x04); data_out(0x00,0x00);
comm_out(0x05); data_out(0x00,0xEF);
comm_out(0x06); data_out(0x00,0x00);
comm_out(0x07); data_out(0x00,0x00);
comm_out(0x08); data_out(0x00,0x01);
comm_out(0x09); data_out(0x00,0x3F);

comm_out(0x01); data_out(0x00,0x06);
comm_out(0x16); data_out(0x00,0xC8);
comm_out(0x23); data_out(0x00,0x95);
comm_out(0x24); data_out(0x00,0x95);
comm_out(0x25); data_out(0x00,0xFF);
comm_out(0x27); data_out(0x00,0x02);
comm_out(0x28); data_out(0x00,0x02);
comm_out(0x29); data_out(0x00,0x02);
comm_out(0x2A); data_out(0x00,0x02);
comm_out(0x2C); data_out(0x00,0x02);
comm_out(0x2D); data_out(0x00,0x02);

comm_out(0x3A); data_out(0x00,0x01);
comm_out(0x3B); data_out(0x00,0x01);
comm_out(0x3C); data_out(0x00,0xF0);
comm_out(0x3D); data_out(0x00,0x00);
delay(80);
comm_out(0x35); data_out(0x00,0x38);
comm_out(0x36); data_out(0x00,0x78);
comm_out(0x3E); data_out(0x00,0x38);
comm_out(0x40); data_out(0x00,0x0F);
comm_out(0x41); data_out(0x00,0xF0);

comm_out(0x19); data_out(0x00,0x2D);
comm_out(0x93); data_out(0x00,0x06);
delay(80);
comm_out(0x20); data_out(0x00,0x40);
comm_out(0x1D); data_out(0x00,0x07);
comm_out(0x1E); data_out(0x00,0x00);
comm_out(0x1F); data_out(0x00,0x04);

comm_out(0x44); data_out(0x00,0x3C);
comm_out(0x45); data_out(0x00,0x12);
delay(80);
comm_out(0x1C); data_out(0x00,0x04);
delay(80);
comm_out(0x43); data_out(0x00,0x80);
delay(80);
comm_out(0x1B); data_out(0x00,0x08);
delay(80);
comm_out(0x1B); data_out(0x00,0x10);
delay(80);
comm_out(0x90); data_out(0x00,0x7F);
comm_out(0x26); data_out(0x00,0x04);
delay(80);
comm_out(0x26); data_out(0x00,0x24);
comm_out(0x26); data_out(0x00,0x2C);
delay(80);
comm_out(0x26); data_out(0x00,0x3C);
comm_out(0x57); data_out(0x00,0x02);
comm_out(0x55); data_out(0x00,0x00);
comm_out(0x57); data_out(0x00,0x00);
comm_out(0x22); 
}
/***************************************************
*                   Main Program                  *
***************************************************/

void main(void)
{
    P0 = 0;
	P1 = 0;
	P2 = 0;
	resetLCD();
	init_LCD();
	while(1)
	{
	Fulldisplay(0xF8,0x00);
	delay(500);
	Fulldisplay(0x07,0xE0);
	delay(500);
	Fulldisplay(0x00,0x1F);
	delay(500);
	Fulldisplay(0xFF,0xFF);
	delay(500);
	Fulldisplay(0x00,0x00);
	delay(500);
	dispPic(pic);
	delay(100);
	}
}