128*64 LCD顯示驅(qū)動程序

//頭文件部分
#include

//======================================================
//定義常用符號，LCD控制字符號常量，TIME0定時賦值常量
#define uchar unsigned char
#define uint unsigned int

#define DISPON 0x3f
#define DISPOFF 0x3e
#define DISPFIRSTLINE 0xc0
#define LCDBUZY 0x80
#define LIMIT 0x80 //128列限制

#define TL0NUMB (65536-50000)%256 //定時50MS，20次溢出為一秒定時中斷
#define TH0NUMB (65536-50000)/256
#define TCOUNTF 10

//=========================================================
//定義引腳
sbit lck = P3^5; //鎖存信號引腳

//=========================================================
//定義全局變量
uchar combyte; //LCD命令變量
uchar data status; //狀態(tài)變量，左右半屏標(biāo)志量
uchar tcount = 0; //限制定時時間標(biāo)志
//uchar pagebyte = 0; //上下移頁控制量
uchar colbyte = 120; //左右移列控制量

//=========================================================
//定義圖形參數(shù)
uchar code A[]={0xe0, 0x0f, 0xf0, 0x0f, 0x98, 0x00, 0x8c, 0x00, // A，此處的參數(shù)是按照列輸入來寫的，英文內(nèi)碼是按照行輸入來寫的
0x98, 0x00, 0xf0, 0x0f, 0xe0, 0x0f, 0x00, 0x00};

//=========================================================
//函數(shù)原型
void IniLcd(void); //初始化LCD
void ClrLcd(uchar); //清屏LCD
void WrComL(uchar); //寫左半屏幕命令字
void WrComR(uchar); //寫右半屏幕命令字
void WrData(uchar,uchar,uchar); //寫數(shù)據(jù)
void Locate(uchar,uchar); //LCD屏定位
void delayus(uint); //微妙級延遲
void delay(void); //延遲個幾秒
//void PicturePage(void); //圖形下移函數(shù)
void PictureCol(void); //圖像左移函數(shù)

void IniTime0(void); //初始化定時器0，利用MCU的內(nèi)部定時完成圖像的移動過程

//=========================================================
//主程序部分
void main(void)
{
IniLcd();
IniTime0();
while(1); //對LCD的操作
/*{
Picture();
delay();
ClrLcd(0x00);
}*/
}

/******************************************************/
/* 以下部分是LCD12864的驅(qū)動模塊 */
/******************************************************/

//=========================================================
//初始化定時器0函數(shù)
void IniTime0(void)
{
TMOD = 0x01;
//TCON = 0x00;
TL0 = TL0NUMB;
TH0 = TH0NUMB;
TR0 = 1;
ET0 =1;
EA =1;
}

//=========================================================
//定時器中斷函數(shù)
void Time0(void) interrupt 1
{
TR0 = 0;
TL0 = TL0NUMB;
TH0 = TH0NUMB;
tcount++;
if(tcount == TCOUNTF)
{
tcount = 0;

/*PicturePage();
pagebyte++;
if(pagebyte > 6)
pagebyte = 0;*/

PictureCol();
colbyte--;
}
TR0 = 1;
}

//=========================================================
//初始化LCD函數(shù)
void IniLcd(void)
{
combyte = DISPOFF;
WrComL(combyte);
WrComR(combyte);

combyte = DISPON;
WrComL(combyte);
WrComR(combyte);

combyte = DISPFIRSTLINE;
WrComL(combyte);
WrComR(combyte);

ClrLcd(0x00);

/*combyte = DISPFIRSTLINE;
WrComL(combyte);
WrComR(combyte);*/

Locate(0x00,0x00);
}

//=========================================================
//清屏LCD函數(shù)
void ClrLcd(uchar cbyte)
{
uchar i,j;
for(i=0;i<8;i++)
{
delayus(6);
for(j=0;j{
delayus(6);
WrData(cbyte,i,j);
}
}
}

//=========================================================
//微妙級延遲函數(shù)
void delayus(uint t)
{
while(t--);
}

//=========================================================
//延遲個幾秒函數(shù)
void delay(void)
{
delayus(50000);
delayus(50000);
delayus(50000);
delayus(50000);
delayus(50000);
delayus(50000);
}

//=========================================================
//寫左半屏幕命令字函數(shù)
void WrComL(uchar cbyte)
{
lck = 0;
P1 = 0x29; //E = 1;R/W = 1;D/I = 0; CS1 = 1; CS2 = 0;
lck = 1;
while(P0&LCDBUZY);
lck = 0;
P1 = 0x00; //E = 0;
lck = 0;

lck = 0;
P1 = 0x21; //E = 1;R/W = 0;D/I = 0; CS1 = 1; CS2 = 0;
lck = 1;
P0 = cbyte;
lck = 0;
P1 = 0x00; //E = 0;
lck = 1;
}

//=========================================================
//寫右半屏幕命令字函數(shù)
void WrComR(uchar cbyte)
{
lck = 0;
P1 = 0x2a; //E = 1;R/W = 1;D/I = 0; CS1 = 0; CS2 = 1;
lck = 1;
while(P0&LCDBUZY);
lck = 0;
P1 = 0x00; //E = 0;
lck = 0;

lck = 0;
P1 = 0x22; //E = 1;R/W = 0;D/I = 0; CS1 = 0; CS2 = 1;
lck = 1;
P0 = cbyte;
lck = 0;
P1 = 0x00; //E = 0;
lck = 1;
}

//=========================================================
//LCD屏幕點定位函數(shù)
void Locate(uchar page,uchar col)
{
uchar com_page,com_col,right;
switch(col&0xc0)
{
case 0x00: //左半屏幕
{
right = 0;
break;
}
case 0x40: //右半屏幕
{
right = 1;
break;
}
default: break;
}
com_page = page&0x07|0xb8; //將頁數(shù)據(jù)轉(zhuǎn)換為頁命令字
com_col = col&0x3f|0x40; //將列數(shù)據(jù)轉(zhuǎn)換為列命令字

switch(right)
{
case 0x00: //左半屏幕
{
WrComL(com_page);
WrComL(com_col);
status = 0;
break;
}
case 0x01: //右半屏幕
{
WrComR(com_page);
WrComR(com_col);
status = 1;
break;
}
default: break;
}
}

//=========================================================
//寫數(shù)據(jù)函數(shù)
void WrData(uchar databyte,uchar page,uchar col)
{
Locate(page,col);

P0 = databyte;

lck = 0;
if(status)
P1 = 0x26; //E = 1; R/W = 0; D/I = 1; CS1 = 0; CS2 = 1;
else
P1 = 0x25; //E = 1; R/W = 0; D/I = 1; CS1 = 1; CS2 = 0;
lck = 1;

//P0 = databyte;

lck = 0;
P1 = 0x00;
lck = 1;
}

//=========================================================
//圖形函數(shù)，圖像按頁下移
/*void PicturePage(void)
{
uchar col,page;
uchar i = 0;
ClrLcd(0x00);
for(col=64;col<72;col++)
{
for(page=pagebyte;page{
WrData(A[i++],page++,col);
}
}
}*/

//=========================================================
//圖形左移函數(shù)
void PictureCol(void)
{
uchar col,page;
uchar i = 0;
ClrLcd(0x00);
for(col=colbyte;(col=0);) //列控制
{
for(page=0;page<2;page++) //頁控制
{
WrData(A[i++],page,col); //寫數(shù)據(jù)，“i++”同步跟新數(shù)據(jù)
}
col++;
}
if(colbyte==0)
colbyte = 120;

}