//触摸屏校准代码
//得到四个校准参数
void drv_touchAdjust(void)
{
uint16_t pos_temp[4][2];//坐标缓存值
uint8_t cnt = 0;
uint16_t d1, d2;
uint32_t tem1, tem2;
float fac;
cnt = 0;
POINT_COLOR = BLUE;
BACK_COLOR = WHITE;
drv_lcdClear(WHITE);//清屏
POINT_COLOR = RED; //红色
drv_lcdClear(WHITE);//清屏
Drow_Touch_Point(20, 20); //画点1
Pen_Point.Key_Sta = Pen_Up; //消除触发信号
Pen_Point.xfac = 0; //xfac用来标记是否校准过,所以校准之前必须清掉!以免错误
while(1)
{
if(Pen_Point.Key_Sta == Pen_Down) //按键按下了
{
Pen_Point.Key_Sta = Pen_Up;
if(Read_TP_Once())//得到单次按键值
{
pos_temp[cnt][0] = Pen_Point.X;
pos_temp[cnt][1] = Pen_Point.Y;
cnt++;
}
switch(cnt)
{
case 1:
drv_lcdClear(WHITE);//清屏
Drow_Touch_Point(220, 20); //画点2
break;
case 2:
drv_lcdClear(WHITE);//清屏
Drow_Touch_Point(20, 300); //画点3
break;
case 3:
drv_lcdClear(WHITE);//清屏
Drow_Touch_Point(220, 300); //画点4
break;
case 4: //全部四个点已经得到
//对边相等
tem1 = abs(pos_temp[0][0] - pos_temp[1][0]); //x1-x2
tem2 = abs(pos_temp[0][1] - pos_temp[1][1]); //y1-y2
tem1 *= tem1;
tem2 *= tem2;
d1 = sqrt(tem1 + tem2); //得到1,2的距离
tem1 = abs(pos_temp[2][0] - pos_temp[3][0]); //x3-x4
tem2 = abs(pos_temp[2][1] - pos_temp[3][1]); //y3-y4
tem1 *= tem1;
tem2 *= tem2;
d2 = sqrt(tem1 + tem2); //得到3,4的距离
fac = (float)d1 / d2;
if(fac < 0.95 || fac > 1.05 || d1 == 0 || d2 == 0) //不合格
{
cnt = 0;
drv_lcdClear(WHITE);//清屏
Drow_Touch_Point(20, 20);
continue;
}
tem1 = abs(pos_temp[0][0] - pos_temp[2][0]); //x1-x3
tem2 = abs(pos_temp[0][1] - pos_temp[2][1]); //y1-y3
tem1 *= tem1;
tem2 *= tem2;
d1 = sqrt(tem1 + tem2); //得到1,3的距离
tem1 = abs(pos_temp[1][0] - pos_temp[3][0]); //x2-x4
tem2 = abs(pos_temp[1][1] - pos_temp[3][1]); //y2-y4
tem1 *= tem1;
tem2 *= tem2;
d2 = sqrt(tem1 + tem2); //得到2,4的距离
fac = (float)d1 / d2;
if(fac < 0.95 || fac > 1.05) //不合格
{
cnt = 0;
drv_lcdClear(WHITE);//清屏
Drow_Touch_Point(20, 20);
continue;
}//正确了
//对角线相等
tem1 = abs(pos_temp[1][0] - pos_temp[2][0]); //x1-x3
tem2 = abs(pos_temp[1][1] - pos_temp[2][1]); //y1-y3
tem1 *= tem1;
tem2 *= tem2;
d1 = sqrt(tem1 + tem2); //得到1,4的距离
tem1 = abs(pos_temp[0][0] - pos_temp[3][0]); //x2-x4
tem2 = abs(pos_temp[0][1] - pos_temp[3][1]); //y2-y4
tem1 *= tem1;
tem2 *= tem2;
d2 = sqrt(tem1 + tem2); //得到2,3的距离
fac = (float)d1 / d2;
if(fac < 0.95 || fac > 1.05) //不合格
{
cnt = 0;
drv_lcdClear(WHITE);//清屏
Drow_Touch_Point(20, 20);
continue;
}//正确了
//计算结果
Pen_Point.xfac = (float)200 / (pos_temp[1][0] - pos_temp[0][0]); //得到xfac
Pen_Point.xoff = (240 - Pen_Point.xfac * (pos_temp[1][0] + pos_temp[0][0])) / 2; //得到xoff
Pen_Point.yfac = (float)280 / (pos_temp[2][1] - pos_temp[0][1]); //得到yfac
Pen_Point.yoff = (320 - Pen_Point.yfac * (pos_temp[2][1] + pos_temp[0][1])) / 2; //得到yoff
POINT_COLOR = BLUE;
drv_lcdClear(WHITE);//清屏
drv_lcdShowString(35, 110, "Touch Screen Adjust OK!"); //校正完成
Delay_ms(1000);
drv_lcdClear(WHITE);//清屏
return;//校正完成
}
}
}
}
//触摸屏校准代码
//得到四个校准参数
void Touch_Adjust(void)
{
signed short pos_temp[4][2];//坐标缓存值
u8 cnt=0;
u16 d1,d2;
u32 tem1,tem2;
float fac;
cnt=0;
POINT_COLOR=BLUE;
BACK_COLOR =WHITE;
LCD_Clear(WHITE);//清屏
POINT_COLOR=RED;//红色
LCD_Clear(WHITE);//清屏
Drow_Touch_Point(20,20);//画点1
Pen_Point.Key_Sta=Key_Up;//消除触发信号
Pen_Point.xfac=0;//xfac用来标记是否校准过,所以校准之前必须清掉!以免错误
while(1)
{
if(Pen_Point.Key_Sta==Key_Down)//按键按下了
{
if(Read_TP_Once())//得到单次按键值
{
pos_temp[cnt][0]=Pen_Point.X;
pos_temp[cnt][1]=Pen_Point.Y;
cnt++;
}
switch(cnt)
{
case 1:
LCD_Clear(WHITE);//清屏
Drow_Touch_Point(220,20);//画点2
break;
case 2:
LCD_Clear(WHITE);//清屏
Drow_Touch_Point(20,300);//画点3
break;
case 3:
LCD_Clear(WHITE);//清屏
Drow_Touch_Point(220,300);//画点4
break;
case 4: //全部四个点已经得到
//对边相等
tem1=abs(pos_temp[0][0]-pos_temp[1][0]);//x1-x2
tem2=abs(pos_temp[0][1]-pos_temp[1][1]);//y1-y2
tem1*=tem1;
tem2*=tem2;
d1=sqrt(tem1+tem2);//得到1,2的距离
tem1=abs(pos_temp[2][0]-pos_temp[3][0]);//x3-x4
tem2=abs(pos_temp[2][1]-pos_temp[3][1]);//y3-y4
tem1*=tem1;
tem2*=tem2;
d2=sqrt(tem1+tem2);//得到3,4的距离
fac=(float)d1/d2;
if(fac<0.95||fac>1.05||d1==0||d2==0)//不合格
{
cnt=0;
LCD_Clear(WHITE);//清屏
Drow_Touch_Point(20,20);
ADJ_INFO_SHOW("ver fac is:");
LCD_ShowNum(40+24,40,pos_temp[0][0],4,16); //显示数值
LCD_ShowNum(40+24+80,40,pos_temp[0][1],4,16); //显示数值
LCD_ShowNum(40+24,60,pos_temp[1][0],4,16); //显示数值
LCD_ShowNum(40+24+80,60,pos_temp[1][1],4,16); //显示数值
LCD_ShowNum(40+24,80,pos_temp[2][0],4,16); //显示数值
LCD_ShowNum(40+24+80,80,pos_temp[2][1],4,16); //显示数值
LCD_ShowNum(40+24,100,pos_temp[3][0],4,16); //显示数值
LCD_ShowNum(40+24+80,100,pos_temp[3][1],4,16); //显示数值
//扩大100倍显示
LCD_ShowNum(40,140,fac*100,3,16);//显示数值,该数值必须在95~105范围之内.
continue;
}
tem1=abs(pos_temp[0][0]-pos_temp[2][0]);//x1-x3
tem2=abs(pos_temp[0][1]-pos_temp[2][1]);//y1-y3
tem1*=tem1;
tem2*=tem2;
d1=sqrt(tem1+tem2);//得到1,3的距离
tem1=abs(pos_temp[1][0]-pos_temp[3][0]);//x2-x4
tem2=abs(pos_temp[1][1]-pos_temp[3][1]);//y2-y4
tem1*=tem1;
tem2*=tem2;
d2=sqrt(tem1+tem2);//得到2,4的距离
fac=(float)d1/d2;
if(fac<0.95||fac>1.05)//不合格
{
cnt=0;
LCD_Clear(WHITE);//清屏
Drow_Touch_Point(20,20);
ADJ_INFO_SHOW("hor fac is:");
LCD_ShowNum(40+24,40,pos_temp[0][0],4,16); //显示数值
LCD_ShowNum(40+24+80,40,pos_temp[0][1],4,16); //显示数值
LCD_ShowNum(40+24,60,pos_temp[1][0],4,16); //显示数值
LCD_ShowNum(40+24+80,60,pos_temp[1][1],4,16); //显示数值
LCD_ShowNum(40+24,80,pos_temp[2][0],4,16); //显示数值
LCD_ShowNum(40+24+80,80,pos_temp[2][1],4,16); //显示数值
LCD_ShowNum(40+24,100,pos_temp[3][0],4,16); //显示数值
LCD_ShowNum(40+24+80,100,pos_temp[3][1],4,16); //显示数值
//扩大100倍显示
LCD_ShowNum(40,140,fac*100,3,16);//显示数值,该数值必须在95~105范围之内.
continue;
}//正确了
//对角线相等
tem1=abs(pos_temp[1][0]-pos_temp[2][0]);//x1-x3
tem2=abs(pos_temp[1][1]-pos_temp[2][1]);//y1-y3
tem1*=tem1;
tem2*=tem2;
d1=sqrt(tem1+tem2);//得到1,4的距离
tem1=abs(pos_temp[0][0]-pos_temp[3][0]);//x2-x4
tem2=abs(pos_temp[0][1]-pos_temp[3][1]);//y2-y4
tem1*=tem1;
tem2*=tem2;
d2=sqrt(tem1+tem2);//得到2,3的距离
fac=(float)d1/d2;
if(fac<0.95||fac>1.05)//不合格
{
cnt=0;
LCD_Clear(WHITE);//清屏
Drow_Touch_Point(20,20);
ADJ_INFO_SHOW("dia fac is:");
LCD_ShowNum(40+24,40,pos_temp[0][0],4,16); //显示数值
LCD_ShowNum(40+24+80,40,pos_temp[0][1],4,16); //显示数值
LCD_ShowNum(40+24,60,pos_temp[1][0],4,16); //显示数值
LCD_ShowNum(40+24+80,60,pos_temp[1][1],4,16); //显示数值
LCD_ShowNum(40+24,80,pos_temp[2][0],4,16); //显示数值
LCD_ShowNum(40+24+80,80,pos_temp[2][1],4,16); //显示数值
LCD_ShowNum(40+24,100,pos_temp[3][0],4,16); //显示数值
LCD_ShowNum(40+24+80,100,pos_temp[3][1],4,16); //显示数值
//扩大100倍显示
LCD_ShowNum(40,140,fac*100,3,16);//显示数值,该数值必须在95~105范围之内.
continue;
}//正确了
//计算结果
Pen_Point.xfac=(float)200/(pos_temp[1][0]-pos_temp[0][0]);//得到xfac
Pen_Point.xoff=(240-Pen_Point.xfac*(pos_temp[1][0]+pos_temp[0][0]))/2;//得到xoff
Pen_Point.yfac=(float)280/(pos_temp[2][1]-pos_temp[0][1]);//得到yfac
Pen_Point.yoff=(320-Pen_Point.yfac*(pos_temp[2][1]+pos_temp[0][1]))/2;//得到yoff
if(abs(Pen_Point.xfac)>2||abs(Pen_Point.yfac)>2)//触屏和预设的相反了.
{
cnt=0;
LCD_Clear(WHITE);//清屏
Drow_Touch_Point(20,20);
LCD_ShowString(35,110,"TP Need readjust!");
Pen_Point.touchtype=!Pen_Point.touchtype;//修改触屏类型.
if(Pen_Point.touchtype)//X,Y方向与屏幕相反
{
CMD_RDX=0X90;
CMD_RDY=0XD0;
}else //X,Y方向与屏幕相同
{
CMD_RDX=0XD0;
CMD_RDY=0X90;
}
delay_ms(500);
continue;
}
POINT_COLOR=BLUE;
LCD_Clear(WHITE);//清屏
LCD_ShowString(35,110,"Touch Screen Adjust OK!");//校正完成
delay_ms(500);
LCD_Clear(WHITE);//清屏
return;//校正完成
}
}
}
}
/************************************************
** Touch_Adjust :
** Code for touch screen calibration
** Get 4 calibration parameters
************************************************/
void Touch_Adjust(void)
{
u8 i;
u16 pos_temp[4][2];
u16 d1,d2;
u32 tem1,tem2;
float fac;
while(1){
for(i=0;i<4;i++){
Refreshes_Screen();
if(i==0){
Drow_Touch_Point(20,20);
Touch_GetXY(&pos_temp[0][0],&pos_temp[0][1],1);
}
else if(i == 1){
Drow_Touch_Point(220,20);
Touch_GetXY(&pos_temp[1][0],&pos_temp[1][1],1);
}
else if(i == 2){
Drow_Touch_Point(20,300);
Touch_GetXY(&pos_temp[2][0],&pos_temp[2][1],1);
}
else {
Drow_Touch_Point(220,300);
Touch_GetXY(&pos_temp[3][0],&pos_temp[3][1],1);
}
}
tem1=abs(pos_temp[0][0]-pos_temp[1][0]); //x1-x2
tem2=abs(pos_temp[0][1]-pos_temp[1][1]); //y1-y2
tem1*=tem1;
tem2*=tem2;
d1=sqrt(tem1+tem2);
tem1=abs(pos_temp[2][0]-pos_temp[3][0]); //x3-x4
tem2=abs(pos_temp[2][1]-pos_temp[3][1]); //y3-y4
tem1*=tem1;
tem2*=tem2;
d2=sqrt(tem1+tem2);
fac=(float)d1/d2;
if(fac<0.95||fac>1.05||d1==0||d2==0)
{
continue;
}
tem1=abs(pos_temp[0][0]-pos_temp[2][0]); //x1-x3
tem2=abs(pos_temp[0][1]-pos_temp[2][1]); //y1-y3
tem1*=tem1;
tem2*=tem2;
d1=sqrt(tem1+tem2);
tem1=abs(pos_temp[1][0]-pos_temp[3][0]); //x2-x4
tem2=abs(pos_temp[1][1]-pos_temp[3][1]); //y2-y4
tem1*=tem1;
tem2*=tem2;
d2=sqrt(tem1+tem2);
fac=(float)d1/d2;
if(fac<0.95||fac>1.05)
{
continue;
}
tem1=abs(pos_temp[1][0]-pos_temp[2][0]); //x1-x3
tem2=abs(pos_temp[1][1]-pos_temp[2][1]); //y1-y3
tem1*=tem1;
tem2*=tem2;
d1=sqrt(tem1+tem2);
tem1=abs(pos_temp[0][0]-pos_temp[3][0]); //x2-x4
tem2=abs(pos_temp[0][1]-pos_temp[3][1]); //y2-y4
tem1*=tem1;
tem2*=tem2;
d2=sqrt(tem1+tem2);
fac=(float)d1/d2;
if(fac<0.95||fac>1.05)
{
continue;
}
xfac=(float)220/(pos_temp[1][0]-pos_temp[0][0]);
xoff=(240-xfac*(pos_temp[1][0]+pos_temp[0][0]))/2;
yfac=(float)300/(pos_temp[2][1]-pos_temp[1][1]);
yoff=(320-yfac*(pos_temp[2][1]+pos_temp[1][1]))/2;
LCD_Clear(BLACK);
break;
}
}
