爱华网void LCD12864_writedata(unsigned char Data){ LCD12864_checkbusy();LCD12864_RS=1;LCD12864_RW=0;LCD12864_EN=0;Delay_40US();LcdData=Data;LCD12864_EN=1;Delay_40US();LCD12864_EN=0;}
unsigned char LCD12864_readdata(void){unsigned char Temp;LCD12864_checkbusy(); LcdData=0xff; LCD12864_RS=1;LCD12864_RW=1;LCD12864_EN=1;Delay_40US(); Temp=LcdData; LCD12864_EN=0; return Temp;}
void LCD12864_writecommand(unsigned char CmdCode){ LCD12864_checkbusy(); LCD12864_RS=0; LCD12864_RW=0; LCD12864_EN=0; Delay_40US() ; LcdData=CmdCode; Delay_40US() ; LCD12864_EN=1; LCD12864_EN=0;}void LCD12864_setplace(uchar X,ucharY){ uchar pos;if (X==1){X=0x80;}else if(X==2){X=0x90;} elseif(X==3){X=0x88;}else if(X==4){X=0x98;}pos=X+Y;LCD12864_writecommand(pos);}void LCD12864_graphsetmode(unsigned char Select){LCD12864_writecommand(LCD_EXTEND_FUNCTION);if(Select){LCD12864_writecommand(LCD_GRAPH_ON);}else {LCD12864_writecommand(LCD_GRAPH_OFF);} }void LCD12864_displaystring(unsigned char x,unsigned chary,unsigned char *Str){ if((y>4)||(x>8)) return;LCD12864_setplace(x,y);while(*Str>0){ LCD12864_writedata(*Str); Str++;}}void LCD12864_displaypage( uchar code *adder1){ unsigned char i; LCD12864_writecommand(0x80);for(i=0;i<32;i++){LCD12864_writedata(*adder1);adder1++;}LCD12864_writecommand(0x90);for(i=32;i<64;i++){LCD12864_writedata(*adder1);adder1++;}
}void LCD12864_sendascii(uchar hang,uchar lie,charsign){
LCD12864_setplace(hang,lie); LCD12864_writedata(sign); }void LCD12864_sendgb2312(uchar hang,uchar lie,unsigned intsign){unsigned char templ, temph;templ=sign&0x00ff;temph=sign>>8 ;LCD12864_writecommand(0x30);LCD12864_setplace(hang,lie); LCD12864_writedata(temph);Delay_40US();LCD12864_writedata(templ); }void LCD12864_writepixel(unsigned char x,unsigned chary,unsigned char color){unsigned char row,collum,cbite;unsigned char tempH,tempL;LCD12864_graphsetmode(0);collum=x>>4;cbite=x&0x0f;if(y<32)row=y;else{row=y-32;collum+=8;}LCD12864_writecommand(0x80+row);LCD12864_writecommand(0x80+collum);LCD12864_readdata();tempH=LCD12864_readdata();tempL=LCD12864_readdata();LCD12864_writecommand(0x80+row);LCD12864_writecommand(0x80+collum);if (color){if(cbite<8){tempH|=(1<<(7-cbite));}else{tempL|=(1<<(15-cbite));}}else{if(cbite<8){tempH&=~(1<<(7-cbite));}else{tempL&=~(1<<(15-cbite));}}LCD12864_writedata(tempH);LCD12864_writedata(tempL);LCD12864_graphsetmode(1);LCD12864_writecommand(0x30);}void LCD12864_cleardram(void){ unsigned char i,j; LCD12864_writecommand(0x34);LCD12864_writecommand(0x34);LCD12864_writecommand(0x30);for(i=1;i<5;i++)for(j=1;j<9;j++)LCD12864_sendgb2312(i,j,0xB0A0); LCD12864_writecommand(0x34); LCD12864_writecommand(0x36);
}void LCD12864_cleargram(unsigned char Mode){unsigned char x,y,ii;unsigned char Temp;if(Mode%2==0)Temp=0x00;else Temp=0xff;LCD12864_writecommand(0x36);//扩充指令 绘图显示for(ii=0;ii<9;ii+=8)for(y=0;y<0x20;y++) for(x=0;x<8;x++){LCD12864_writecommand(y+0x80); //行地址LCD12864_writecommand(x+0x80+ii); //列地址 LCD12864_writedata(Temp); //写数据 D15－D8LCD12864_writedata(Temp); //写数据 D7－D0}LCD12864_writecommand(0x30);}void LCD12864_cleargdram(void){LCD12864_cleardram();LCD12864_cleargram(0);}void LCD12864_displaypicture_up(unsigned char *img){ unsigned char i,j; LCD12864_graphsetmode(0); for(j=0;j<32;j++) { for(i=0;i<8;i++) { LCD12864_writecommand(0x34); LCD12864_writecommand(0x80+j); LCD12864_writecommand(0x80+i); LCD12864_writecommand(0x30); LCD12864_writedata(img[j*16+i*2]); LCD12864_writedata(img[j*16+i*2+1]); } } LCD12864_graphsetmode(1);}void LCD12864_displaypicture_down(unsigned char *img){ unsigned char i,j; LCD12864_graphsetmode(1); for(j=0;j<32;j++) { for(i=0;i<8;i++) { LCD12864_writecommand(0x34); LCD12864_writecommand(0x80+j); LCD12864_writecommand(0x80+(i+8)); LCD12864_writecommand(0x30); LCD12864_writedata(img[j*16+i*2]); LCD12864_writedata(img[j*16+i*2+1]); } } LCD12864_graphsetmode(1);}
void LCD12864_displaypicture_all(unsigned char *img){ unsigned char i,j; LCD12864_graphsetmode(1); for(j=0;j<32;j++) { for(i=0;i<8;i++) { LCD12864_writecommand(0x34); LCD12864_writecommand(0x80+j); LCD12864_writecommand(0x80+i); LCD12864_writecommand(0x30); LCD12864_writedata(img[j*16+i*2]); LCD12864_writedata(img[j*16+i*2+1]); } } for(j=32;j<64;j++) { for(i=0;i<8;i++) {LCD12864_writecommand(0x34); LCD12864_writecommand(0x80+j-32); LCD12864_writecommand(0x80+(i+8)); LCD12864_writecommand(0x30); LCD12864_writedata(img[j*16+i*2]); LCD12864_writedata(img[j*16+i*2+1]); } } LCD12864_graphsetmode(1);}
unsigned char LCD12864_readpixel(unsigned char x,unsigned chary){unsigned char z,w;unsigned int Temp;if(x>=128||y>=64) return0;w=15-x; //确定对这个字的第多少位进行操作x=x/16; //确定为一行上的第几字if(y<32)z=0x80; //如果为上页else z=0x88; //否则如果为下页y=y2;LCD12864_writecommand(0x36);LCD12864_writecommand(y+0x80); //行地址LCD12864_writecommand(x+z); //列地址Temp=LCD12864_readdata(); //先空读一次Temp=(unsignedint)LCD12864_readdata()<<8;//再读出高8位Temp|=(unsigned int)LCD12864_readdata();//再读出低8位if((Temp&&LcdMaskTab[w])==0)return0;else return 1;}
void LCD12864_drawline_H(unsigned char x,unsigned chary,unsigned char Length,unsigned char Color){unsigned char count;if(Length==0)return;for(count=0;count<Length;count++){LCD12864_writepixel(x+count,y,Color);}}void LCD12864_whiteback(uchar x,uchar y,uchar width)//反白，X值为0－7，Y值为0－3，width为行反白格数{ uchar i,j,flag=0x00; uchar ii,jj; LCD12864_writecommand(0x34); //写数据时,关闭图形显示 for(ii=0;ii<32;ii++) { LCD12864_writecommand(0x80+ii); //先写入水平坐标值 LCD12864_writecommand(0x80); //写入垂直坐标值 for(jj=0;jj<16;jj++) //再写入两个8位元的数据 LCD12864_writedata(0x00); } for(ii=0;ii<32;ii++) { LCD12864_writecommand(0x80+ii); LCD12864_writecommand(0x88); for(jj=0;jj<16;jj++) LCD12864_writedata(0x00); } LCD12864_writecommand(0x36); //写完数据,开图形显示 if(y>1) { flag=0x08; y=y-2; } LCD12864_writecommand(0x34); LCD12864_writecommand(0x34); //写数据时,关闭图形显示,且打开扩展指令集for(i=0;i<16;i++){LCD12864_writecommand(0x80+(y<<4)+i);LCD12864_writecommand(0x80+flag+x);for(j=0;j<width;j++){LCD12864_writedata(0xff);LCD12864_writedata(0xff);}Delay_40US();}LCD12864_writecommand(0x36); //写完数据,开图形显示LCD12864_writecommand(0x30); //从扩展指令到基本指令}void LCD12864_drawline_V(unsigned char x,unsigned chary,unsigned char Length,unsigned char Color){unsigned char count;if(Length==0) return;for(count=0;count<Length;count++){LCD12864_writepixel(x,y+count,Color);}}void LCD12864_drawline_R(unsigned char x1,unsigned chary1,unsigned char x2,unsigned char y2,unsigned char Color){unsigned int x,y;unsigned int d_x,d_y;int err=0;unsigned char temp=0;if(y2<y1){x=x1;y=y1;x1=x2;y1=y2;x2=x;y2=y;}d_y=y2-y1;if (d_y==0){if (x1>x2){x=x1;x1=x2;x2=x;}for (x=x1;x<=x2;x++)LCD12864_writepixel(x,y1,Color);}else{if(x2>=x1){temp=1;d_x=x2-x1;}else {d_x=x1-x2;}x=x1;y=y1;LCD12864_writepixel(x,y,1);if(temp&&(d_y<=d_x))while(x!=x2){if(err<0){x=x+1;err=err+(y2-y);}else{ x=x+1;y=y+1;err=err+(y2-y)-(x2-x);}LCD12864_writepixel(x,y,Color);}
elseif(temp&&(d_y>d_x))while(y!=y2){ d_x=x2-x;d_y=y2-y;if(err<0){ x=x+1;y=y+1;err=err+d_y-d_x;}else{ y=y+1;err=err-d_x;}LCD12864_writepixel(x,y,Color);}
elseif(!temp&&(d_y<=d_x))while(x!=x2){ d_x=x-x2;d_y=y2-y;if(err<0){ x=x-1;err=err+d_y;}else{ x=x-1;y=y+1;err=err+d_y-d_x;}LCD12864_writepixel(x,y,Color);}
else if(!temp&&(d_y>d_x))while(y!=y2){d_x=x-x2; d_y=y2-y;if(err<0){x=x-1;y=y+1;err=err+d_y-d_x;}else{y=y+1;err=err-d_x; }LCD12864_writepixel(x,y,Color);}}}
void LCD12864_drawrectangle(unsigned char x0,unsigned chary0,unsigned char x1,unsigned char y1,unsigned char Color){unsigned char Temp;if(x0>x1) {Temp=x0;x0=x1;x1=Temp;}if(y0>y1) {Temp=y0;y0=y1;y1=Temp;}LCD12864_drawline_V(x0,y0,y1-y0+1,Color);LCD12864_drawline_V(x1,y0,y1-y0+1,Color);LCD12864_drawline_H(x0,y0,x1-x0+1,Color);LCD12864_drawline_H(x0,y1,x1-x0+1,Color);}void LCD12864_drawcircledot(unsigned char x,unsigned chary,char xx,char yy,unsigned char Color)//内部函数，对称法画圆的8个镜像点{LCD12864_writepixel((x+yy),(y+xx),Color);//第 1 个 8 分圆LCD12864_writepixel((x+xx),(y+yy),Color);//第 2 个 8 分圆LCD12864_writepixel((x-xx),(y+yy),Color);//第 3 个 8 分圆LCD12864_writepixel((x-yy),(y+xx),Color);//第 4 个 8 分圆LCD12864_writepixel((x-yy),(y-xx),Color);//第 5 个 8 分圆LCD12864_writepixel((x-xx),(y-yy),Color);//第 6 个 8 分圆LCD12864_writepixel((x+xx),(y-yy),Color);//第 7 个 8 分圆LCD12864_writepixel((x+yy),(y-xx),Color);//第 8 个 8 分圆}
void LCD12864_drawcircle(unsigned char x,unsigned chary,unsigned char r,unsigned char Color)//中点法画圆{//中点法画圆unsigned char xx,yy;char deltax,deltay,d;xx=0;yy=r;deltax=3;deltay=2-r-r;d=1-r;LCD12864_drawcircledot(x,y,xx,yy,Color);//对称法画圆的8个镜像点while (xx<yy){if (d<0){ d+=deltax;deltax+=2;xx++;}else{ d+=deltax+deltay; deltax+=2;deltay+=2;xx++;yy--;}LCD12864_drawcircledot(x,y,xx,yy,Color);//对称法画圆的8个镜像点}}
void LCD12864_setstatus(unsigned char cmd){ LCD12864_writecommand(0x34);LCD12864_writecommand(cmd);
}void LCD12864_init(){ LCD12864_PSB=1;LCD12864_writecommand(0x34);LCD12864_writecommand(0x34);LCD12864_writecommand(0x30); //选择基本指令集LCD12864_writecommand(0x0c); //开显示(无游标、不反白)LCD12864_writecommand(0x01); //清除显示，并且设定地址指针为00HLCD12864_writecommand(0x06); //指定在资料的读取及写入时，设定游标的移动方向及指定显示的移位}LCD12864.H#ifndef __lcd12864_H__#define __lcd12864_H__#include "Reg52.h"#include "intrins.h"#define Delay2US _nop_();_nop_();sbit LCD12864_RS=P2^5; //并行的指令/数据选择信号, H数据, L命令sbit LCD12864_RW=P2^6; //并行读写选择信号, H读, L写sbit LCD12864_EN=P2^7; //并行使能端, H有效, L无效sbit LCD12864_PSB=P2^3; //并/串接口选择,H并,L串//sbit LCD12864_RET=P2^5; //复位, L有效本指令集预定义#define LCD_CLEAR_SCREEN 0x01 //清屏#define LCD_ADDRESS_RESET 0x02 //地址归零#define LCD_BASIC_FUNCTION 0x30//基本指令集#define LCD_EXTEND_FUNCTION 0x34//扩充指令集//扩展指令集预定义#define LCD_AWAIT_MODE 0x01 //待命模式#define LCD_ROLLADDRESS_ON 0x03 //允许输入垂直卷动地址#define LCD_IRAMADDRESS_ON 0x02 //允许输入IRAM地址#define LCD_SLEEP_MODE 0x08 //进入睡眠模式#define LCD_NO_SLEEP_MODE 0x0c //脱离睡眠模式#define LCD_GRAPH_ON 0x36 //打开绘图模式#define LCD_GRAPH_OFF 0x34 //关闭绘图模式#ifndef LCD_COLOR#define LCD_COLOR_BLACK 1#define LCD_COLOR_WHITE#define LcdData P0#define uchar unsigned charvoid LCD12864_checkbusy(void);void LCD12864_writedata(unsigned charData);uchar LCD12864_readdata(void);void LCD12864_writecommand(unsigned charCmdCode);void LCD12864_writepixel(unsigned charx,unsigned char y,unsigned char Color);uchar LCD12864_readpixel(unsigned char x,unsigned chary);void LCD12864_drawline_H(unsigned charx,unsigned char y,unsigned char Length,unsigned char Color);void LCD12864_drawline_V(unsigned charx,unsigned char y,unsigned char Length,unsigned char Color);void LCD12864_drawline_R(unsigned charx1,unsigned char y1,unsigned char x2,unsigned char y2,unsigned charColor);void LCD12864_displaypicture_all(unsignedchar *img);void LCD12864_displaypicture( uchar code*adder);void LCD12864_sendascii(uchar hang,ucharlie,char sign);void LCD12864_sendgb2312(uchar hang,ucharlie,unsigned int sign);void LCD12864_whiteback(uchar x,uchary,uchar width);void LCD12864_startprobar(unsigned charx,unsigned char speed);void LCD12864_cleardram(void);void LCD12864_drawrectangle(unsigned charx0,unsigned char y0,unsigned char x1,unsigned char y1,unsigned charColor);void LCD12864_drawcircle(unsigned charx,unsigned char y,unsigned char r,unsigned char Color);void LCD12864_cleargram(unsigned charMode);void LCD12864_displaystring(unsigned charx,unsigned char y,unsigned char *Str);void LCD12864_drawcircledot(unsigned charx,unsigned char y,char xx,char yy,unsigned char Color);void LCD12864_init(void);void LCD12864_setstatus(unsigned charcmd);
#endif
