触摸显示轨迹
stm32单片机源程序如下:
- #include "led.h"
- #include "delay.h"
- #include "key.h"
- #include "sys.h"
- #include "lcd.h"
- #include "usart.h"
- #include "24cxx.h"
- #include "w25qxx.h"
- #include "touch.h"
-
-
- //清空屏幕并在右上角显示"RST"
- void Load_Drow_Dialog(void)
- {
- LCD_Clear(WHITE); //清屏
- POINT_COLOR=BLUE; //设置字体为蓝色
- LCD_ShowString(lcddev.width-24,0,200,16,16,"RST");//显示清屏区域
- POINT_COLOR=RED; //设置画笔蓝色
- }
- ////////////////////////////////////////////////////////////////////////////////
- //电容触摸屏专有部分
- //画水平线
- //x0,y0:坐标
- //len:线长度
- //color:颜色
- void gui_draw_hline(u16 x0,u16 y0,u16 len,u16 color)
- {
- if(len==0)return;
- LCD_Fill(x0,y0,x0+len-1,y0,color);
- }
- //画实心圆
- //x0,y0:坐标
- //r:半径
- //color:颜色
- void gui_fill_circle(u16 x0,u16 y0,u16 r,u16 color)
- {
- u32 i;
- u32 imax = ((u32)r*707)/1000+1;
- u32 sqmax = (u32)r*(u32)r+(u32)r/2;
- u32 x=r;
- gui_draw_hline(x0-r,y0,2*r,color);
- for (i=1;i<=imax;i++)
- {
- if ((i*i+x*x)>sqmax)// draw lines from outside
- {
- if (x>imax)
- {
- gui_draw_hline (x0-i+1,y0+x,2*(i-1),color);
- gui_draw_hline (x0-i+1,y0-x,2*(i-1),color);
- }
- x--;
- }
- // draw lines from inside (center)
- gui_draw_hline(x0-x,y0+i,2*x,color);
- gui_draw_hline(x0-x,y0-i,2*x,color);
- }
- }
- //两个数之差的绝对值
- //x1,x2:需取差值的两个数
- //返回值:|x1-x2|
- u16 my_abs(u16 x1,u16 x2)
- {
- if(x1>x2)return x1-x2;
- else return x2-x1;
- }
- //画一条粗线
- //(x1,y1),(x2,y2):线条的起始坐标
- //size:线条的粗细程度
- //color:线条的颜色
- void lcd_draw_bline(u16 x1, u16 y1, u16 x2, u16 y2,u8 size,u16 color)
- {
- u16 t;
- int xerr=0,yerr=0,delta_x,delta_y,distance;
- int incx,incy,uRow,uCol;
- if(x1<size|| x2<size||y1<size|| y2<size)return;
- delta_x=x2-x1; //计算坐标增量
- delta_y=y2-y1;
- uRow=x1;
- uCol=y1;
- if(delta_x>0)incx=1; //设置单步方向
- else if(delta_x==0)incx=0;//垂直线
- else {incx=-1;delta_x=-delta_x;}
- if(delta_y>0)incy=1;
- else if(delta_y==0)incy=0;//水平线
- else{incy=-1;delta_y=-delta_y;}
- if( delta_x>delta_y)distance=delta_x; //选取基本增量坐标轴
- else distance=delta_y;
- for(t=0;t<=distance+1;t++ )//画线输出
- {
- gui_fill_circle(uRow,uCol,size,color);//画点
- xerr+=delta_x ;
- yerr+=delta_y ;
- if(xerr>distance)
- {
- xerr-=distance;
- uRow+=incx;
- }
- if(yerr>distance)
- {
- yerr-=distance;
- uCol+=incy;
- }
- }
- }
- ////////////////////////////////////////////////////////////////////////////////
- //5个触控点的颜色
- const u16 POINT_COLOR_TBL[CT_MAX_TOUCH]={RED,GREEN,BLUE,BROWN,GRED};
- //电阻触摸屏测试函数
- void rtp_test(void)
- {
- u8 key;
- u8 i=0;
- while(1)
- {
- key=KEY_Scan(0);
- tp_dev.scan(0);
- if(tp_dev.sta&TP_PRES_DOWN) //触摸屏被按下
- {
- if(tp_dev.x[0]<lcddev.width&&tp_dev.y[0]<lcddev.height)
- {
- if(tp_dev.x[0]>(lcddev.width-24)&&tp_dev.y[0]<16)Load_Drow_Dialog();//清除
- else TP_Draw_Big_Point(tp_dev.x[0],tp_dev.y[0],RED); //画图
- }
- }else delay_ms(10); //没有按键按下的时候
- if(key==KEY0_PRES) //KEY0按下,则执行校准程序
- {
- LCD_Clear(WHITE);//清屏
- TP_Adjust(); //屏幕校准
- Load_Drow_Dialog();
- }
- i++;
- if(i%20==0)LED0=!LED0;
- }
- }
- //电容触摸屏测试函数
- void ctp_test(void)
- {
- u8 t=0;
- u8 i=0;
- u16 lastpos[5][2]; //记录最后一次的数据
- while(1)
- {
- tp_dev.scan(0);
- for(t=0;t<CT_MAX_TOUCH;t++)
- {
- if((tp_dev.sta)&(1<<t))
- {
- if(tp_dev.x[t]<lcddev.width&&tp_dev.y[t]<lcddev.height)
- {
- if(lastpos[t][0]==0XFFFF)
- {
- lastpos[t][0] = tp_dev.x[t];
- lastpos[t][1] = tp_dev.y[t];
- }
- lcd_draw_bline(lastpos[t][0],lastpos[t][1],tp_dev.x[t],tp_dev.y[t],2,POINT_COLOR_TBL[t]);//画线
- lastpos[t][0]=tp_dev.x[t];
- lastpos[t][1]=tp_dev.y[t];
- if(tp_dev.x[t]>(lcddev.width-24)&&tp_dev.y[t]<16)
- {
- Load_Drow_Dialog();//清除
- }
- }
- }else lastpos[t][0]=0XFFFF;
- }
-
- delay_ms(5);i++;
- if(i%20==0)LED0=!LED0;
- }
- }
- int main(void)
- {
- delay_init(); //延时函数初始化
- NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//设置中断优先级分组为组2:2位抢占优先级,2位响应优先级
- uart_init(115200); //串口初始化为115200
-
- LED_Init(); //LED端口初始化
- LCD_Init();
- KEY_Init();
- tp_dev.init();
-
- POINT_COLOR=RED;//设置字体为红色
- LCD_ShowString(60,50,200,16,16,"ELITE STM32");
- LCD_ShowString(60,70,200,16,16,"TOUCH TEST");
- LCD_ShowString(60,90,200,16,16,"ATOM@ALIENTEK");
- LCD_ShowString(60,110,200,16,16,"2015/1/11");
- LCD_ShowString(60,130,200,16,16,"Press KEY0 to Adjust");
- if(tp_dev.touchtype!=0XFF)LCD_ShowString(60,130,200,16,16,"Press KEY0 to Adjust");//电阻屏才显示
- delay_ms(1500);
- Load_Drow_Dialog();
- if(tp_dev.touchtype&0X80)ctp_test(); //电容屏测试
- else rtp_test(); //电阻屏测试
- }
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touchpad.rar
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