12864液晶

#include #include

#define uint unsigned int #define uchar unsigned char #define DATA P0 sbit RS=P2^2; sbit RW=P2^1; sbit EN=P2^0; sbit cs1=P2^4; sbit cs2=P2^3;

/**************字库*****************/ uchar code hzk[]={/*-- 调入了一幅图像：F:\\单片机资料\\工具软件\\点阵液晶字模图片提取软件\\207.bmp --*/

/*-- 调入了一幅图像：C:\\Documents and Settings\\Administrator\\桌面\\未命名2.bmp --*/ /*-- 宽度x高度=128x64 --*/

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/***************检查是否忙*******************/ void checkstate() { uchar dat; RS=0; RW=1;

do{ DATA=0x00; EN=1; _nop_(); dat=DATA; EN=0; dat=0x80&dat; }while(!(dat==0x00)); }

/**************写命令************************/ sendcommand(uchar com) { checkstate(); RS=0; RW=0; DATA=com; EN=1; _nop_(); _nop_(); EN=0; }

/******************设置页(X)地址**************/ void setline(uchar page) { page=0xb8|page; sendcommand(page); }

/*******************设定显示开始行**************/ void setstartline(uchar startline) { startline=0xc0|startline; sendcommand(startline); }

/*******************设定列(Y)地址*****************/ void setcolumn(uchar column) { column=column&0x3f; column=0x40|column; sendcommand(column); }

/******************开关显示************************/ void setonoff(uchar onoff) {

onoff=0x3e|onoff; //onoff=0or1; sendcommand(onoff); }

/******************写显示数据*********************/ void writebyte(uchar dat) { checkstate(); RS=1; RW=0; DATA=dat; EN=1; _nop_(); _nop_(); EN=0; }

/******************选择屏幕***********************/ void selectscreen(uchar screen) { switch(screen) { case 0:cs1=0;_nop_();_nop_();_nop_();cs2=0;_nop_();_nop_();_nop_();break; case 1:cs1=0;_nop_();_nop_();_nop_();cs2=1;_nop_();_nop_();_nop_();break; case 2:cs1=1;_nop_();_nop_();_nop_();cs2=0;_nop_();_nop_();_nop_();break; } }

/********************清屏***********************/ void clearscreen(uchar screen) { uchar i,j; selectscreen(screen); for(i=0;i<8;i++) { setline(i); setcolumn(0); for(j=0;j<64;j++) { writebyte(0x00); } } }

/**************初始化********************/ void initlcd() {

checkstate(); selectscreen(0); setonoff(0); selectscreen(0); setonoff(1); selectscreen(0); clearscreen(0); setstartline(0); }

void main() {

uint i,j,k=0; initlcd();

clearscreen(0);

while(1) { k=0;

for(i=0;i<8;i++) { selectscreen(2); setline(i); setcolumn(0); for(j=0;j<64;j++) { writebyte(hzk[j+64*k]); } k++; selectscreen(1); setline(i); setcolumn(0); for(j=0;j<64;j++) { writebyte(hzk[j+64*k]); } k++; } } }

电路图如下所示：