LCD12864上显示波形.rar

/********************************** LCD12864曲线显示*******************************************/ /*********作者：王胜文。QQ：95201972 email：nunk@163.com 希望与大家交流2007。08。03**********/ #include<reg51.h> #include<drive_functions.h> #include<math.h> //#include<get_keys.h> #define Graphic_Clear 0x01 //檫除点 #define Graphic_Not 0x02 //反相点 #define Graphic_Draw 0x03 //画点 uchar j=0,i=0; uchar r=32; /***********************在LCD上任意坐标画点********************************/ void DrawPoint(uchar X,uchar Y,uchar Type) { //X，Y化点的坐标Type画点的类型：反相点，檫除点，画点 uchar DX = (Y >> 3); //计算出属于哪个字节 uchar BX = Y - (DX << 3); //计算出属于字节哪一位 uchar TempData = 0; if (X > 63) { chip_select=2; X -= 64; } else { chip_select=1; } SetPage(DX); //设行地址 SetColumn(X); //设列地址 TempData = ReadData(); //读出所画点所在字节的内容 switch (Type) //对该字节进行相应操作 { case Graphic_Clear: TempData &= ~(1<<BX); break; case Graphic_Not: TempData ^= (1 << BX); break; case Graphic_Draw: TempData |= (1 << BX); break; default: break; } SetPage(DX); //设置行地址 SetColumn(X); //设置列地址 WriteData(TempData); //把修改后的字节送回LCD，达到画点目的 } /********插值法画任意两点之间直线的函数，函数中只用加减法，程序运行效率很高**********/ DrawLine(uchar x1,uchar y1,uchar x2,uchar y2) { //x1,y1起点坐标；x2,y2终点坐标； uchar x,y; uchar d_x,d_y; uchar err=0; uchar 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++ ) DrawPoint(x,y1,Graphic_Draw); } else { if(x2>=x1){temp=1;d_x=x2-x1;}else d_x=x1-x2; x=x1;y=y1;DrawPoint(x,y,Graphic_Draw); 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);} DrawPoint(x,y,Graphic_Draw); } else if(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;} DrawPoint(x,y,Graphic_Draw); } else if(!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;} DrawPoint(x,y,Graphic_Draw); } 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;} DrawPoint(x,y,Graphic_Draw); } } } /***********************************************************************/ void DrawLevel(void) { for(i=0;i<127;i++){DrawPoint(i,32,Graphic_Draw);}//画水平直线 } /************************************************************************************/ void DrawSineWave(void) { uchar xn=0; uchar yn=32; uchar i; uchar xi,yi; for(i=0;i<127;i++) { xi=i; yi=(sin(i*0.1)*32)+32; DrawLine(xn,yn,xi,yi); //在一系列零散的点上，两点两点之间连线，从而得到一条曲线 xn=i; yn=yi; } } /*************************************************************************************/ void DrawCircle(uchar x0,uchar y0,uchar r)//x0,y0为圆心坐标，r为圆半径 { uchar xn,yn,xi,yi; unsigned int j; xn=cos(0)*r+x0; yn=sin(0)*r+y0; for(j=0;j<630;j++) { xi=(cos(j*0.01)*r)+x0; yi=(sin(j*0.01)*r)+y0; DrawLine(xn,yn,xi,yi); //在一系列零散的点上，两点两点之间连线，从而得到一条曲线 xn=xi; yn=yi; } } /**************************************************************************************************/ void DrawRetic(uchar x0,uchar y0,uchar x1,uchar y1)//画正方形，x0,y0为左上角坐标，x1,y1为右下角坐标 { uchar i; for(i=0;i<=x1-x0;i++){ DrawPoint(x0+i,y0,Graphic_Draw); DrawPoint(x0+i,y1,Graphic_Draw); } for(i=0;i<=y1-y0;i++){ DrawPoint(x0,y0+i,Graphic_Draw); DrawPoint(x1,y0+i,Graphic_Draw); } } /**************************************************************************************************/ void DrawTrigle(uchar x1,uchar y1,uchar x2,uchar y2,uchar x3,uchar y3)//画三角形，三个坐标为三角形顶点 { // DrawLine(x1,y1,x2,y2); // DrawLine(x2,y2,x3,y3); // DrawLine(x1,y1,x3,y3); } /******************************** main **********************************************************/ void main(void) { ClearLCD(); while(1) { ClearLCD(); DrawLevel(); DrawLine(63,0,63,63); DrawSineWave(); //DrawCircle(63,32,r); //r-=4; //} //DrawRetic(10,10,30,30); //DrawTrigle(0,0,80,60,120,0); } }