【我的DIY设计】+7寸触摸屏的驱动

只看该作者 · 2013-1-15 10:52

大家好，在这学生都要忙着放假过年的日子里，我的DIY设计是用STM32F3的开发板驱动了一个7寸的电阻触摸屏。
下面给大家看下基本程序
void Drow_Touch_Point(u16 x,u16 y)
{
LCD_DrawLine(x-12,y,x+13,y);
LCD_DrawLine(x,y-12,x,y+13);
LCD_DrawPoint(x+1,y+1);
LCD_DrawPoint(x-1,y+1);
LCD_DrawPoint(x+1,y-1);
LCD_DrawPoint(x-1,y-1);
Draw_Circle(x,y,6);
}

void Draw_Big_Point(u16 x,u16 y)
{
LCD_DrawPoint(x,y);//?DD?μ?
LCD_DrawPoint(x+1,y);
LCD_DrawPoint(x,y+1);
LCD_DrawPoint(x+1,y+1);
}
void Refreshes_Screen(void)
{
ssd1963_Clear(BLACK);//???á
WriteString(776,0,"RST",BLUE,BLACK);
}
void Convert_Pos(void)
{
if(Read_ADS2(&Pen_Point.X,&Pen_Point.Y))
{
  Pen_Point.X0=Pen_Point.xfac*Pen_Point.X+Pen_Point.xoff;
  Pen_Point.Y0=Pen_Point.yfac*Pen_Point.Y+Pen_Point.yoff;
}
}
void Touch_Adjust(void)
{
u16 pos_temp[4][2];
u8  cnt=0;
u16 d1,d2;
u32 tem1,tem2;
float fac;
cnt=0;
ssd1963_Clear(BLACK);
Drow_Touch_Point(20,20);
Pen_Point.Key_Sta=Key_Up;
Pen_Point.xfac=0;
while(1)
{
  if(Pen_Point.Key_Sta==Key_Down)
  {
if(Read_TP_Once())
{
pos_temp[cnt][0]=Pen_Point.X;
pos_temp[cnt][1]=Pen_Point.Y;
cnt++;
}
switch(cnt)
{
case 1:
   ssd1963_Clear(WHITE);
   Drow_Touch_Point(780,20);
   break;
case 2:
   ssd1963_Clear(WHITE);
   Drow_Touch_Point(20,460);
   break;
case 3:
   ssd1963_Clear(WHITE);
   Drow_Touch_Point(780,460);
   break;
case 4:
   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)
   {
   cnt=0;
   ssd1963_Clear(WHITE);
   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);

   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)
   {
   cnt=0;
   ssd1963_Clear(WHITE);
   Drow_Touch_Point(20,20);
   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)
   {
   cnt=0;
   ssd1963_Clear(WHITE);
   Drow_Touch_Point(20,20);
   continue;
   }
               Pen_Point.xfac=(long double)760/(pos_temp[1][0]-pos_temp[0][0]);
   Pen_Point.xoff=(800-Pen_Point.xfac*(pos_temp[1][0]+pos_temp[0][0]))/2;

   Pen_Point.yfac=(long double)440/(pos_temp[2][1]-pos_temp[0][1]);
   Pen_Point.yoff=(480-Pen_Point.yfac*(pos_temp[2][1]+pos_temp[0][1]))/2;//μ?μ?yoff
   ssd1963_Clear(BLACK);
   WriteString(35,110,"Touch Screen Adjust OK!",RED,BLACK);
   Delay1(20);
   ssd1963_Clear(BLACK);
   return;
}
  }
}
}
void Touch_Init()
{
Touch_Configuration();
  Read_ADS(&Pen_Point.X,&Pen_Point.Y);

GPIO_EXTILineConfig(GPIO_PortSourceGPIOG, GPIO_PinSource7);

EXTI_InitStructure.EXTI_Line = EXTI_Line7;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);

EXTI_GenerateSWInterrupt(EXTI_Line7);
#ifdef ADJ_SAVE_ENABLE
if(Get_Adjdata())return;
else
{
  ili9320_Clear(WHITE);//???á
   Touch_Adjust();
  Save_Adjdata();
}
Get_Adjdata();
#else
ssd1963_Clear(WHITE);
Touch_Adjust();
#endif
}