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（2006-07-01开始）


匠人手记

LCD12864 驱动 ,采用串行方式
程序匠人 发表于 2006-11-28 22:41:00  阅读全文 | 回复(1) | 引用通告 | 编辑

LCD12864 驱动 ,采用串行方式
 
  
 
 12864(控制器为st7920)
[ 2005-8-23 21:47:57 | By: kassey ]
/********************************************
file&: lcd.h
Description:  LCD12864 驱动 ,采用串行方式,
Author: kassey@126.com July,22th,2005
********************************************/

＃i nclude<reg52.h>
＃i nclude <intrins.h>
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<x;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<x;k++)
  for(j=0;j<255;j++)_nop_();
 

}

void SendByteLCD(uchar WLCDData)
{
uchar i;
for(i=0;i<8;i++)
{
 if((WLCDData<<i)&0x80)SID=1;
 else SID=0;
 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 != '\0')      //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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