LCD12864 驱动 ,采用串行方式
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/********************************************
file&: lcd.h
Description: LCD12864 驱动 ,采用串行方式,
Author:kassey@126.comJuly,22th,2005
********************************************/
＃i nclude
＃i nclude
sbit SCLK =P1^3 //E
sbit SID =P1^4; //RW
sbit RST =P1^2; // low active 可以不用,也就是说,只用两条线和LCD通信
#define ROW1 0x80
#define ROW2 0x90
#define ROW3 0x88
#define ROW4 0x98
unsigned char code AC_TABLE[]={
0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87, //第一行汉字位置
0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97, //第二行汉字位置
0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f, //第三行汉字位置
0x98,0x99,0x9a,0x9b,0x9c,0x9d,0x9e,0x9f, //第四行汉字位置
};
/*****************************************
Fucntion: delay10US(char x)
Description: delay for 10 us
Parameter: x
Author:kassey@126.com
Date: July,7th,2005
*****************************************/
void delay10US(uchar x)
{
uchar k;
for(k=0;k
}
/*****************************************
Fucntion: delay1MS(char x)
Description: delay for 10 us
Parameter: x delay for 1MS
Author:kassey@126.com
Date: July,7th,2005
*****************************************/
void delay1MS(uchar x)
{
uchar k,j;
x=x<<1;
for(k=0;k
}
void SendByteLCD(uchar WLCDData)
{
uchar i;
for(i=0;i<8;i++)
{
if((WLCDData<
SCLK=0;
SCLK=1
}
}
SPIWR(uchar Wdata,uchar RS)
{
SendByteLCD(0xf8+(RS<<1));
SendByteLCD(Wdata&0xf0);
SendByteLCD((Wdata<<4)&0xf0);
}
void SendCMD(uchar CMD)
{
SPIWR(CMD,0);
delay10US(90);//8155来模拟串行通信,所以,加上8155的延时,
}
void SendData(uchar Data)
{
SPIWR(Data,1);
}
void LCDInit()
{
RST=0;
delay1MS(50);
RST=1;
SendCMD(0x30);//功能设置，一次送8位数据，基本指令集
SendCMD(0x0C);//0000,1100 整体显示，游标off，游标位置off
SendCMD(0x01);//0000,0001 清DDRAM
SendCMD(0x02);//0000,0010 DDRAM地址归位
SendCMD(0x80);//1000,0000 设定DDRAM 7位地址000，0000到地址计数器AC//
SendCMD(0x04);//点设定，显示字符/光标从左到右移位，DDRAM地址加 一//
SendCMD(0x0C);//显示设定，开显示，显示光标，当前显示位反白闪动
}
/*****************************
清文本区
*****************************/
void LcmClearTXT( void )
{
unsigned char i;
SendCMD(0x30); //8BitMCU,基本指令集合
SendCMD(0x80); //AC归起始位
for(i=0;i<64;i++)
SendData(0x20);
}
/*****************************
发送字符串
*****************************/
void PutStr(unsigned char row,unsigned char col,unsigned char *puts)
{
SendCMD(0x30); //8BitMCU,基本指令集合
SendCMD(AC_TABLE[8*row+col]); //起始位置
while(*puts != ' ') //判断字符串是否显示完毕
{
if(col==8) //判断换行
{ //若不判断,则自动从第一行到第三行
col=0;
row++;
}
if(row==4) row=0; //一屏显示完,回到屏左上角
SendCMD(AC_TABLE[8*row+col]);
SendData(*puts); //一个汉字要写两次
puts++;
SendData(*puts);
puts++;
col++;
}
}
/*****************************
绘图
*****************************/
void PutBMP(unsigned char *puts)
{
unsigned int x=0;
unsigned char i,j;
SendCMD(0x34); //8Bit扩充指令集,即使是36H也要写两次
SendCMD(0x36); //绘图ON,基本指令集里面36H不能开绘图
for(i=0;i<32;i++) //12864实际为256x32
{
SendCMD(0x80|i); //行位置
SendCMD(0x80); //列位置
for(j=0;j<32;j++) //256/8=32 byte
{ //列位置每行自动增加
SendData(puts[x]);
x++;
}
}
}
void ClearScreen()
{ uchar i,j,x,y;
LCDInit();
SendCMD(0x3e);// RE=1 扩展指令选择 G=1 开图形显示
x=0x80;
y=0x80;
for(j=0;j<64;j++)
{
y=0x80;
SendCMD(x);
SendCMD(y);
for(i=0;i<32;i++)
{
SendData(0x00);
}
x=x+1;
}
}
void Sendint(uint dd)
{
SendData(dd>>8);
SendData(dd);
}
/*****************************
打点 x=0:128; y=0:64;
*****************************/
void Gra(uchar x,uchar y)
{
uchar xx,yy;
SendCMD(0x34);
SendCMD(0x36);
xx=x/16;
yy=63-y;
if(yy>=32){xx=xx+8;yy-=32;}
SendCMD(0x80+yy);
SendCMD(0x80+xx);
Sendint(0x8000>>(x%16));
}
uchar code IBM[]=
{
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x7F,0xFF,0xFF,0x87,0xFF,0xFF,0xFF,0xF0,0x00,0xFF,0xFF,0xE0,0x00,0x07,0xFF,0xFE,
0x7F,0xFF,0xFF,0x87,0xFF,0xFF,0xFF,0xF0,0x00,0xFF,0xFF,0xE0,0x00,0x0F,0xFF,0xFE,
0x7F,0xFF,0xFF,0x87,0xFF,0xFF,0xFF,0xF8,0x00,0xFF,0xFF,0xE0,0x00,0x0F,0xFF,0xFE,
0x7F,0xFF,0xFF,0x87,0xFF,0xFF,0xFF,0xFC,0x00,0xFF,0xFF,0xF0,0x00,0x1F,0xFF,0xFE,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x7F,0xFF,0xFF,0x87,0xFF,0xFF,0xFF,0xFF,0x00,0xFF,0xFF,0xF8,0x00,0x3F,0xFF,0xFE,
0x7F,0xFF,0xFF,0x87,0xFF,0xFF,0xFF,0xFF,0x80,0xFF,0xFF,0xFC,0x00,0x7F,0xFF,0xFE,
0x7F,0xFF,0xFF,0x87,0xFF,0xFF,0xFF,0xFF,0x80,0xFF,0xFF,0xFC,0x00,0x7F,0xFF,0xFE,
0x7F,0xFF,0xFF,0x87,0xFF,0xFF,0xFF,0xFF,0x80,0xFF,0xFF,0xFC,0x00,0x7F,0xFF,0xFE,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0xFF,0xC0,0x00,0x0F,0xF8,0x00,0xFF,0xC0,0x03,0xFF,0xFE,0x01,0xFF,0xFF,0x00,
0x00,0xFF,0xC0,0x00,0x0F,0xF8,0x00,0xFF,0xC0,0x03,0xFF,0xFF,0x01,0xFF,0xFF,0x00,
0x00,0xFF,0xC0,0x00,0x0F,0xF8,0x00,0xFF,0xC0,0x03,0xFF,0xFF,0x03,0xFF,0xFF,0x00,
0x00,0xFF,0xC0,0x00,0x0F,0xF8,0x00,0xFF,0x80,0x03,0xFF,0xFF,0x83,0xFF,0xFF,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0xFF,0xC0,0x00,0x0F,0xFF,0xFF,0xFF,0x00,0x03,0xFF,0xFF,0xCF,0xFF,0xFF,0x00,
0x00,0xFF,0xC0,0x00,0x0F,0xFF,0xFF,0xFE,0x00,0x03,0xFF,0xFF,0xEF,0xFF,0xFF,0x00,
0x00,0xFF,0xC0,0x00,0x0F,0xFF,0xFF,0xFE,0x00,0x03,0xFF,0xFF,0xEF,0xFF,0xFF,0x00,
0x00,0xFF,0xC0,0x00,0x0F,0xFF,0xFF,0xFC,0x00,0x03,0xFF,0xBF,0xFF,0xFB,0xFF,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0xFF,0xC0,0x00,0x0F,0xFF,0xFF,0xFC,0x00,0x03,0xFF,0x8F,0xFF,0xF3,0xFF,0x00,
0x00,0xFF,0xC0,0x00,0x0F,0xFF,0xFF,0xFE,0x00,0x03,0xFF,0x87,0xFF,0xE3,0xFF,0x00,
0x00,0xFF,0xC0,0x00,0x0F,0xFF,0xFF,0xFE,0x00,0x03,0xFF,0x87,0xFF,0xE3,0xFF,0x00,
0x00,0xFF,0xC0,0x00,0x0F,0xFF,0xFF,0xFF,0x00,0x03,0xFF,0x87,0xFF,0xC3,0xFF,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0xFF,0xC0,0x00,0x0F,0xF8,0x00,0xFF,0x80,0x01,0xFF,0x83,0xFF,0x83,0xFF,0x00,
0x00,0xFF,0xC0,0x00,0x0F,0xF8,0x00,0xFF,0xC0,0x01,0xFF,0x81,0xFF,0x03,0xFF,0x00,
0x00,0xFF,0xC0,0x00,0x0F,0xF8,0x00,0xFF,0xC0,0x01,0xFF,0x81,0xFF,0x03,0xFF,0x00,
0x00,0xFF,0xC0,0x00,0x0F,0xF8,0x00,0xFF,0xC0,0x01,0xFF,0x80,0xFF,0x03,0xFF,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x7F,0xFF,0xFF,0x87,0xFF,0xFF,0xFF,0xFF,0xC0,0xFF,0xFF,0xC0,0x7E,0x03,0xFF,0xFE,
0x7F,0xFF,0xFF,0x87,0xFF,0xFF,0xFF,0xFF,0xC0,0xFF,0xFF,0xC0,0x7C,0x03,0xFF,0xFE,
0x7F,0xFF,0xFF,0x87,0xFF,0xFF,0xFF,0xFF,0xC0,0xFF,0xFF,0xC0,0x3C,0x03,0xFF,0xFE,
0x7F,0xFF,0xFF,0x87,0xFF,0xFF,0xFF,0xFF,0x80,0xFF,0xFF,0xC0,0x3C,0x03,0xFF,0xFE,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x7F,0xFF,0xFF,0x87,0xFF,0xFF,0xFF,0xFE,0x00,0xFF,0xFF,0xC0,0x18,0x03,0xFF,0xFE,
0x7F,0xFF,0xFF,0x87,0xFF,0xFF,0xFF,0xFE,0x00,0xFF,0xFF,0xC0,0x18,0x03,0xFF,0xFE,
0x7F,0xFF,0xFF,0x87,0xFF,0xFF,0xFF,0xFC,0x00,0xFF,0xFF,0xC0,0x08,0x03,0xFF,0xFE,
0x7F,0xFF,0xFF,0x87,0xFF,0xFF,0xFF,0xF8,0x00,0xFF,0xFF,0xC0,0x00,0x03,0xFF,0xFE,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
};
void Put(uchar *p)
{
uchar xx,yy
for(yy=0;yy<32;yy++)
for(xx=0;xx<8;xx++)
{
SendCMD(0x80+yy); //y 按位
SendCMD(0x80+xx);//x 按16位
SendData(*p);
p++;
SendData(*p);
p++;
}
for(yy=0;yy<32;yy++)
for(xx=8;xx<16;xx++)
{
SendCMD(0x80+yy); //y 按位
SendCMD(0x80+xx);//x 按16位
SendData(*p);
p++;
SendData(*p);
p++;
}
}
void Clear()
{ uchar i,j;
LCDInittest();
SendCMD(0x34);
SendCMD(0x3e);// RE=1 扩展指令选择 G=1 开图形显示
for(j=0;j<16;j++)
for(i=0;i<32;i++)
{
SendCMD(0x80+i);
SendCMD(0x80+j);
SendData(0x00);
SendData(0x00);
}
}
void main()
{
LCDInittest();
LcmClearBMP();
Put(IBM);
while(1)
{
}
}
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