12864绘图12864c.docx

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1、12864绘图12864c#include 12864.hvoid delayms(unsigned int n)unsigned char i;for(;n>0;n-)for(i=0;i<100;i+);void checkBusy(void)rs=0;rw=1;en=1;dataPort=0xff;while(dataPort & 0x80);en=0;void writeCommand(unsigned char cmd)checkBusy;rs=0;rw=0;en=1;dataPort=cmd;_nop_;en=0;void writeData(unsigned char ad

2、ata)checkBusy;rs=1;rw=0;en=1;dataPort=adata;_nop_;en=0; unsigned char readData(void)unsigned char RData;dataPort=0xff;checkBusy;rs=1;rw=1;en=0;en=1;RData=dataPort;en=0;return RData;void ClrGDRAM(void)unsigned char x,y;for(y=0;y<64;y+)for(x=0;x<16;x+)writeCommand(0x34);writeCommand(y+0x80); /行地址

3、writeCommand(x+0x80); /列地址 writeCommand(0x30);writeData(0x00);writeData(0x00);/writeCommand(0x30); void LcmInit(void) writeCommand(0x30);delayms(50);writeCommand(0x01);delayms(50);writeCommand(0x06);delayms(50);writeCommand(0x0c);ClrGDRAM;psb=1;/在坐标（x,y)处显示字符串void LcmPrint(unsigned char x,unsigned c

4、har y,unsigned char *adata)unsigned char address;unsigned char i=0;switch (y)case 0:address=0x80+x;break;case 1:address=0x90+x;break;case 2:address=0x88+x;break;case 3:address=0x98+x;break;default:break;writeCommand(address);while(*(adata+i)writeData(*(adata+i);i+;/*函数名： disp_picture函数说明： 显示一幅128*64

5、的图画传入参数：图形指针*img传出参数：无返回值： 无*/void disp_picture(unsigned char *img)unsigned char i,j;for(j=0;j<32;j+)for(i=0;i<8;i+)writeCommand(0x34);writeCommand(0x80+j);writeCommand(0x80+i);writeCommand(0x30);writeData(imgj*16+i*2);writeData(imgj*16+i*2+1);for(j=32;j<64;j+)for(i=0;i<8;i+)writeCommand(0x3

6、4);writeCommand(0x80+j-32);writeCommand(0x80+(i+8);writeCommand(0x30);writeData(imgj*16+i*2);writeData(imgj*16+i*2+1);writeCommand(0x36);/*函数名： dispU_picture函数说明： 上半屏显示一幅128*32的图画传入参数：图形指针*img传出参数：无返回值： 无*/void dispU_picture(unsigned char *img)unsigned char i,j;for(j=0;j<32;j+)for(i=0;i<8;i+)wri

7、teCommand(0x34);writeCommand(0x80+j);writeCommand(0x80+i);writeCommand(0x30);writeData(imgj*16+i*2);writeData(imgj*16+i*2+1);writeCommand(0x36);/*函数名： dispD_picture函数说明： 下半屏显示一幅128*32的图画传入参数：图形指针*img传出参数：无返回值： 无*/void dispD_picture(unsigned char *img)unsigned char i,j;for(j=0;j<32;j+)for(i=0;i<8

8、;i+)writeCommand(0x34);writeCommand(0x80+j);writeCommand(0x80+(i+8);writeCommand(0x30);writeData(imgj*16+i*2);writeData(imgj*16+i*2+1);writeCommand(0x36);/*函数名： drawPoint函数说明：画点传入参数：打点位置(x0,y0);color=1,点亮；color=0,擦除传出参数：无返回值： 无*/void drawPoint(unsigned char x,unsigned char y,unsigned char color)unsi

9、gned char row,collum,cbite;unsigned char tempH,tempL;writeCommand(0x34);writeCommand(0x36);collum=x>>4;cbite=x&0x0f;if(y<32)row=y;elserow=y-32;collum+=8;writeCommand(0x80+row);writeCommand(0x80+collum);readData;tempH=readData;tempL=readData;writeCommand(0x80+row);writeCommand(0x80+collum);if (

10、color)if(cbite<8)tempH|=(1<<(7-cbite);/tempL=(1<<(7-cbite);else/tempH=(1<<(15-cbite);tempL|=(1<<(15-cbite);elseif(cbite<8)tempH&=(1<<(7-cbite);/tempL=(1<<(7-cbite);else/tempH=(1<<(15-cbite);tempL&=(1<<(15-cbite);writeData(tempH);writeData(tempL);writeCommand(0x30)

11、;/*函数名： drawRowLine函数说明：画水平线传入参数：(x0,y0),水平线的起点;(x1,y0)水平线的终点color=1,点亮；color=0,擦除传出参数：无返回值： 无*/void drawRowLine(unsigned char x0,unsigned char y0,unsigned char x1,unsigned char color)unsigned char temp;if(x0>x1) / 对x0、x1大小进行排列，以便画图temp = x1;x1 = x0;x0 = temp; dodrawPoint(x0, y0, color);/ 逐点显示，描出垂

12、直线x0+;while(x1>=x0);/*函数名： drawCollumLine函数说明：画竖直线传入参数：(x0,y0),竖直线的起点;(x1,y0)竖直线的终点;color=1,点亮；color=0,擦除传出参数：无返回值： 无*/void drawCollumLine(unsigned char x0,unsigned char y0,unsigned char y1,unsigned char color)unsigned char temp;if(y0>y1)temp=y0;y0=y1;y1=temp;while (y0<=y1)drawPoint(x0,y0,colo

13、r);y0+;/*函数名： drawLine函数说明：使用Bresenham法,画任意两点间的直线传入参数：(x0,y0),竖直线的起点;(x1,y1)竖直线的终点color=1,点亮；color=0,擦除传出参数：无返回值： 无*/void drawLine(unsigned char x0,unsigned char y0,unsigned char x1,unsigned char y1,unsigned char color)int dx;/ 直线x轴差值变量int dy; / 直线y轴差值变量char dx_sym;/ x轴增长方向，为-1时减值方向，为1时增值方向char dy_s

14、ym;/ y轴增长方向，为-1时减值方向，为1时增值方向int dx_2;/ dx*2值变量，用于加快运算速度int dy_2;/ dy*2值变量，用于加快运算速度int di;/ 决策变量dx = x1-x0;/ 求取两点之间的差值dy = y1-y0;if (dx<0)dx_sym=-1;elseif(dx>0)dx_sym=1; elsedrawCollumLine(x0,y0,y1,color);return;if(dy>0)dy_sym=1;else if(dy<0)dy_sym=-1;elsedrawRowLine(x0,y0,x1,color);return;dx

15、=dx_sym*dx;dy=dy_sym*dy;dx_2=dx*2;dy_2=dy*2;if(dx>=dy)di=dy_2-dx;while(x0!=x1)drawPoint(x0,y0,color);x0+=dx_sym;if(di<0)di+=dy_2;elsedi+=dy_2-dx_2;y0+=dy_sym;drawPoint(x0,y0,color);elsedi=dx_2-dy;while(y0!=y1)drawPoint(x0,y0,color);y0+=dy_sym;if(di<0)di+=dx_2;elsedi+=dx_2-dy_2;x0+=dx_sym;drawPoint(x0,y0,color);