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主程序（RA8803.C）：
/****************************************************
圖片橫向取模
*********************************************************/
#include <reg52.h>
#include <driver.h>
code uchar s1[]={"320X240液晶驅動"};
code uchar s2[]={"-- RA8803控制器 Crasyboye"};
code uchar s3[]={"RA8803是一款雙圖層文字/圖形LCD控制器,"
"支持320X240，擴展模式可支持640X240和320X480。"
"RA8803支持屏幕水平卷動及垂直卷動"
"支持512Byte sRAM可自行造字等等"};
code uchar s4[]={"本驅動來源于網絡，經修參照資料改后顯示穩定，"
"可以用來測試采用RA8803控制器的液晶屏，"
"如轉摘請注明出處:"};
code uchar s5[]={"http*//hi*baidu*com*crasyboye"};
/***************************************************
函數：void display_NET()
功能：網點的顯示,大小四種網點
****************************************************/
void display_NET(uchar s,uchar n)
{
lcd_cmdwrite(0x00,0xc5); //圖形顯示模式
lcd_cursorxy(0,0);
for(i=0;i<240;i++) //行畫點控制
{
for(j=0;j<40;j++) //同時進行8列
{
if(n==1)lcd_datawrite(s);
if(n==2) lcd_datawrite(s);
if(n==4)lcd_datawrite(s);
if(n==8)
if(j%2)lcd_datawrite(s);
else lcd_datawrite(~s);
}
if(n==1) s=~s;
if(n==2) if((i)%2) s=~s;
if(n==4) if((i+1)%4==0) s=~s;
if(n==8) if((i+1)%8==0) s=~s;
}
}
/*************************************************
主程序
***************************************************/
void main(void)
{
delay(10);
lcd_Initial();
while(1)
{
lcd_clear();
display_NET(0x0f,4);
DelayKey(1,4);
lcd_clear();
display_NET(0x00,8);
DelayKey(1,4);
lcd_clear();
lcd_clear();
lcd_cursorxy(5,10);
display_Bstring(s1);
lcd_cursorxy(7,50);
display_string(s2);
lcd_cursorxy(4,74);
display_string(s3);
lcd_cursorxy(4,145);
display_string(s4);
lcd_cursorxy(4,200);
display_string(s5);
DelayKey(1,4);
}
}
頭文件（driver.h）：
#ifndef _driver_h
#define _driver_h
#define uchar unsigned char
#define uint unsigned int
#define x 320
#define y 240
#define xy (x/8)*y
sbit lcd_RS= P3^1; //A0
sbit lcd_WR= P3^4;
sbit lcd_RD= P3^3;
sbit lcd_CS= P3^2 ; //CE27
sbit lcd_RES= P3^0;
#define lcd_data P0
sbit key= P3^4; //用來定住顯示的
uint i,j;
void melay(unsigned int MS)
{
unsigned char us,usn;
while(MS!=0)
{
usn = 2; //for 12M
while(usn!=0)
{
us=0xf6;
while (us!=0){us--;};
usn--;
}
MS--;
}
}
void DelayKey(unsigned int Second , unsigned int MS100)
{ //輸入精確到0.1S,是用,
unsigned int i;
for(i=0;i<Second*100+MS100;i++)
{
if(key==0)
{
melay(20);
while(key==0) melay(100);
break;
}
else melay(50);
}
}
/**********************************************
函數：void delay(uint t)
功能：延時微秒的設定
**************************************************/
void delay(uint t)
{
while(t--);
}
/**************************************************
函數：void lcd_cmdwrite (uchar cmdx , uchar cmdy)
功能：在指定的寄存器寫下命令
********************************************************/
void lcd_cmdwrite (uchar cmdx , uchar cmdy)
{
lcd_data=cmdx;
lcd_CS=0;
lcd_RD=1;
lcd_RS=0;
lcd_WR=0;
lcd_WR=1;
lcd_RS=1;
lcd_CS=1;
lcd_data=cmdy;
lcd_CS=0;
lcd_RD=1;
lcd_RS=0;
lcd_WR=0;
lcd_WR=1;
lcd_RS=1;
lcd_CS=1;
}
/*************************************************
函數：void lcd_datawrite(unsigned char datax)
功能：寫下顯示的數據
*****************************************************/
void lcd_datawrite(unsigned char datax)
{
lcd_data=datax;
lcd_CS=0;
lcd_RD=1;
lcd_RS=1;
lcd_WR=0;
lcd_WR=1;
lcd_RS=0;
lcd_CS=1;
}
/****************************************************
函數：uchar lcd_cmdread(unsigned char cmdx)
功能：讀回一個值
*********************************************************/
uchar lcd_cmdread(uchar cmdx)
{
uchar address_cmd;
lcd_data=cmdx;
lcd_CS=0;
lcd_RD=1;
lcd_RS=0;
lcd_WR=0;
lcd_WR=1;
lcd_RS=1;
lcd_CS=1;
lcd_data=0xff;
lcd_CS=0;
lcd_WR=1;
lcd_RS=0;
lcd_RD=0;
address_cmd=lcd_data;
lcd_RD=1;
lcd_RS=1;
lcd_CS=1;
return(address_cmd);
}
/******************************************************
函數：void lcd_Initial(void)
功能：初始化好多寄存器
**********************************************************/
void lcd_Initial(void)
{
lcd_cmdwrite(0x00,0xcd); //WLCR 正常模式；文字模式；屏幕開啟；不閃爍；不反白；
lcd_cmdwrite(0x01,0x03); //MISC 系統頻率選擇：8M
lcd_cmdwrite(0x02,0x10); //APSR
lcd_cmdwrite(0x03,0x80); //ADSR 平移方向動控制
lcd_cmdwrite(0x10,0x6b); //WCCR 正常顯示，不加粗
lcd_cmdwrite(0x12,0xb3); //MAMR
lcd_cmdwrite(0x20,0x27); //AWRR
lcd_cmdwrite(0x30,0xef); //AWBR
lcd_cmdwrite(0x40,0x00); //AWLR
lcd_cmdwrite(0x50,0x00); //AWTR
lcd_cmdwrite(0x21,0x27); //DWRR
lcd_cmdwrite(0x31,0xef); //DWBR
lcd_cmdwrite(0x41,0x00); //DWLR
lcd_cmdwrite(0x51,0x00); //DWTR
lcd_cmdwrite(0x60,0x00); //CPXR
lcd_cmdwrite(0x61,0x00); //BGSG
lcd_cmdwrite(0x70,0x00); //CPYR
lcd_cmdwrite(0x71,0x00); //BGCM
lcd_cmdwrite(0x72,0xef); //EDCM
lcd_cmdwrite(0x90,0x09); //SCCR
lcd_cmdwrite(0xc0,0xc8); //TPCR
lcd_cmdwrite(0xc1,0x3a); //TPSR
lcd_cmdwrite(0xc8,0x80); //TPXR
lcd_cmdwrite(0xc9,0x80); //TPYR
lcd_cmdwrite(0xca,0x00); //TPZR
lcd_cmdwrite(0xd0,0x0f); //LCCR
lcd_cmdwrite(0xe0,0x00); //PNTR
lcd_cmdwrite(0xf0,0xa0); //FNCR
lcd_cmdwrite(0xf1,0x0f); //FVHT 字體不放大
}
/*****************************************************
函數：void lcd_clear()
功能：清除內存
********************************************************/
void lcd_clear()
{
uchar reg;
lcd_cmdwrite(0xe0,0x00);
reg = lcd_cmdread(0xf0);
reg &=0xf7;
reg |=0x08;
lcd_cmdwrite(0xf0,reg);
delay(300);
}
/******************************************************
函數：void lcd_cursorxy(unsigned int xn,unsigned int yn)
功能：設定要顯示數據的地址
**********************************************************/
void lcd_cursorxy(uint xn,uint yn)
{
lcd_cmdwrite(0x60,xn);
lcd_cmdwrite(0x70,yn);
}
/***********************************************
函數：void lcd_showbig(uchar *text,uint xn)
功能：顯示字符，漢字
******************************************************/
void display_string(uchar *text)
{
lcd_cmdwrite(0x00,0xcd);
lcd_cmdwrite(0xf1,0x0f); //不放大
while(*text != '\0')
{
lcd_datawrite(*text);
++text;
}
}
void display_Bstring(uchar *text)
{
lcd_cmdwrite(0x00,0xcd);
lcd_cmdwrite(0xf1,0x5f); //放大一倍
while(*text != '\0')
{
lcd_datawrite(*text);
++text;
}
}
/***********************************************
函數：void display_img(uchar code *p)
功能：顯示一幅320*240的完美圖片,但分正顯和反顯
顯示，我用的S52，放不下了。
***********************************************
void display_img(uchar code *p,bit c)
{
lcd_cmdwrite(0x00,0xc5);
lcd_cursorxy(0,0);
for(i=0;i<xy;i++)
{
if(c)lcd_datawrite(p[i]); //320*240
else lcd_datawrite(~p[i]);
}
}
*/
#endif

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