基于51单片机的2.4TFT触摸划实心圆程序.docx

/* * 触摸画圆实验程序 * * * 实验目的：1.掌握触摸IC驱动程序的编写 * 2.了解掌握Bresenham画圆算法 *3.了解掌握触摸的防抖处理方法 * *实验现象：在彩屏上用有手或触摸笔滑动时，会生成对应线条 * * 技术论坛： * 官方网站: * 技术支持电话*/#include#include #includeLCD_driver.h#include touch.h#include math.h#define u16 unsigned int#define u8 unsigned charunsigned int xdata TP_X,TP_Y;u16 xdata X_Addata,Y_Addata;int TchScr_Xmax=3859,TchScr_Xmin=26, TchScr_Ymax=3842,TchScr_Ymin=38;/触摸屏返回电压值范围 void draw_circle(int xc, int yc, int r, int fill) ; void _draw_circle_8(int xc, int yc, int x, int y) ;main() unsigned char xdata ss6,r;unsigned int lx,ly,temp_x = 0,temp_y = 0 , a =0 ,flag = 0;unsigned long i,j;char xdata X6 = 0,0,0,0,0,0,Y6= 0,0,0,0,0,0,;LCD_Init(); /TFT初始化AD7843(CMD_RDX);AD7843(CMD_RDY); Pant(0xFF,0xFF); /蓝色 LCD_CS =0; /打开片选使能 ChineseChar(14+46,10,2,colors2,colors7,1);/普 ChineseChar(46+46,10,2,colors2,colors7,2);/中 ChineseChar(78+46,10,2,colors2,colors7,3);/科 ChineseChar(110+46,10,2,colors2,colors7,4);/技 ChineseChar(68,60,1,colors0,colors7,1);/触 ChineseChar(92,60,1,colors0,colors7,2);/摸 ChineseChar(116,60,1,colors0,colors7,3);/屏 ChineseChar(140,60,1,colors0,colors7,4);/测 ChineseChar(164,60,1,colors0,colors7,5);/试 /LCD_ShowString(0,90,colors0,colors5,WWW.PRECHIN.com);LCD_CS =1; /关闭片选使能while(1) LCD_CS =0; /打开片选使能 if (IRQ = 0) Read_ADS2(&X_Addata,&Y_Addata); inttostr(X_Addata,ss); LCD_ShowString(0,295,0xf800,0xfff0,X:); LCD_ShowString(32,295,0xf800,0xfff0,ss); /显示字符串 inttostr(Y_Addata,ss); LCD_ShowString(120,295,0xf800,0xfff0,Y:); LCD_ShowString(152,295,0xf800,0xfff0,ss); /显示字符串 /对采样结果进行转换 /lx=(X_Addata)*LCDWIDTH/(TchScr_Xmax-TchScr_Xmin);j = X_Addata;j = j*240;i = TchScr_Xmax-TchScr_Xmin; lx= j/i;if(lx 240) lx = 240; if(lx 320) ly = 320; if(ly = 320) ly = 320 - ly;Y0 =(ly%100000)/10000 + 0x30;Y1 =(ly%10000)/1000 + 0x30;Y2 =(ly%1000)/100 + 0x30;Y3 =(ly%100)/10 + 0x30;Y4 =ly%10 + 0x30;LCD_ShowString(120,270,0xf800,0xfff0,y:);/显示LCD像素点Y坐标LCD_ShowString(152,270,0xf800,0xfff0,Y); /显示字符串 if (flag) r = abs(lx-temp_x);/为了增加程序的复杂性 这选择用X轴的改变值 做为半径画圆 draw_circle(temp_x,temp_y,r,1);/调用画圆函数 最后个参数的 0 为空心圆 1为实心圆flag = 0; flag = 1; temp_x = lx; temp_y = ly;LCD_CS =1; /关闭片选使能/ 八对称性 void _draw_circle_8(int xc, int yc, int x, int y) Address_set(xc + x,yc + y,xc + x+1,yc + y+1); LCD_Write_DATA(0,255); /像素点设为蓝色Address_set(xc - x,yc + y,xc - x+1,yc + y+1); LCD_Write_DATA(0,255); / 像素点设为蓝色 Address_set(xc + x,yc - y,xc + x+1,yc - y+1); LCD_Write_DATA(0,255); / 像素点设为蓝色Address_set(xc - x,yc - y,xc - x+1,yc - y+1); LCD_Write_DATA(0,255); / 像素点设为蓝色 Address_set(xc + y,yc + x ,xc + y+1,yc + x+1); LCD_Write_DATA(0,255); / 像素点设为蓝色 Address_set(xc - y,yc + x,xc - y+1,yc + x+1); LCD_Write_DATA(0,255);/ 像素点设为蓝色 Address_set(xc + y,yc - x,xc + y+1,yc - x+1); LCD_Write_DATA(0,255);/ 像素点设为蓝色 Address_set(xc - y,yc - x,xc - y+1,yc - x+1); LCD_Write_DATA(0,255); / 像素点设为蓝色 /Bresenhams circle algorithm /Bresenham画圆算法又称中点画圆算法,其基本的方法是利用判别变量来判断选择最近的像素点，/判别变量的数值仅仅用一些加、减和移位运算就可以计算出来。为了简便起见，考虑一个圆心在/坐标原点的圆，而且只计算八分圆周上的点，其余圆周上的点利用对称性就可得到。 void draw_circle(int xc, int yc, int r, int fill) / (xc, yc) 为圆心，r 为半径 / fill 为是否填充 / c 为颜色值 int x = 0, y = r, yi, d; d = 3 - 2 * r;