12864.c

0-30v

#include"reg52.h"
#include"math.h"
#include"intrins.h"
#include"function.h"

#define DB P0

sbit RS = P1^4;
sbit RW = P1^5;
sbit E  = P1^6;

uchar code logo[] = {

/*--  调入了一幅图像：I:\液晶屏BMP图\菜单.bmp  --*/
/*--  宽度x高度=128x64  --*/
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                     };

/************************************************************************************
                   查忙函数          
************************************************************************************/
void busy(void)//RS=0;RW=1;wait=0闲;wait!=0忙 
{
    uchar wait;
    RS = 0;
    RW = 1;
    E = 1;
    for(;;)
    {
        wait = DB;
        wait &= 0x80;
        if(wait == 0)break;
    }
    E = 0;
}

/************************************************************************************
                   写指令函数         
************************************************************************************/
void w_code(uchar c)//RS=0;RW=0;E下降沿 
{
    busy();
    RS = 0;
    RW = 0;
    DB = c;
    E = 1;
    E = 0;
    DB = 0xff;
}

/************************************************************************************
                   写数据函数        
************************************************************************************/
void w_data(uchar d)//RS=1;RW=0;E下降沿 
{
    busy();
    RS = 1;
    RW = 0;
    DB = d;
    E = 1;
    E = 0;
    DB = 0xff;
}

/************************************************************************************
                         读数据函数         
************************************************************************************/
uchar r_data(void)//RS=1;RW=1;E下降沿 
{
    uchar rd_lcd;
    busy();
    RS = 1;
    RW = 1;
    E = 1;
    rd_lcd = DB;
    E = 0;
 	return rd_lcd;
}

/************************************************************************************
                   写DGRAM:x_lcd横坐标,y_lcd纵坐标         
************************************************************************************/
void address(uchar x_lcd,uchar y_lcd)// 
{
    w_code(y_lcd);//垂直坐标 
    w_code(x_lcd);//水平坐标 
}

/************************************************************************************
                   初始化液晶屏 
				   0：字库  1：绘图       
************************************************************************************/
void  lcd_rst(bit a)
{  
    if(a)
	{
	w_code(0x01);//   清屏  
	w_code(0x32);//   功能设置---8BIT控制界面，绘图显示ON  
	w_code(0x36);//   功能设置---8BIT控制界面，扩充指令集  
	}
	else
	{
	w_code(0x30);// 功能设置---8BIT控制界面，基本指令集 
	w_code(0x0c);//显示打开，光标关，反白显示关 
	w_code(0x01);// 清除屏幕显示，将DDRAM的地址计数器归零 
	}
}

/************************************************************************************
---------------------------写整屏点阵数据 
---------------------------x ：图像数据的起始地址        
************************************************************************************/

void  write_lcd_full(uint x )
{
      
	  uchar  i,j,a;
	  j = 0x80; //Y地址寄存器   
	  for(a = 0;a < 32;a++)
	  	{
		w_code(j);
		j++;
		w_code(0x80);//X地址寄存器 
	  	for(i = 0;i < 16;i ++)
	  		{
			w_data(logo[x]);
			x++;
			}
		}

	  j = 0x80; //Y地址寄存器  
	  for(a = 0;a < 32;a++)
	  	{
		w_code(j);
		j++;
		w_code(0x88);//X地址寄存器 
	  	for(i = 0;i < 16;i ++)
	  		{
			w_data(logo[x]);
			x++;
			}
		}
}