📄 touch.c
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#include "..\inc\44b.h"
#include "..\inc\44blib.h"
#include "..\inc\Touch.h"
#include "..\inc\def.h"
#include "..\inc\lcdlib.h"
#include "..\inc\glib.h"
volatile int xPos = LCD_XSIZE/2;
volatile int yPos = LCD_YSIZE/2 + 5;
volatile int Pos_change = 0;
volatile int Buttons = 0;
volatile int Buttons_change = 0;
volatile int touch_check = 0;
volatile int touch_check_delay = 0;
volatile int touch_check_count = 0;
volatile char TouchState;
volatile int touch_x[3];
volatile int touch_y[3];
U8 flag=0;
S16 Positionx0=0;//54;
S16 Positiony0=0;//40;
S16 Positionx1=LCD_XSIZE;//470;
S16 Positiony1=LCD_YSIZE;//395;
S16 fp0;
S16 fp1;
#define ledon *(volatile U8 *)(0x04080000)
U8 Adjust(void);
void __irq Timer1Done(void);
void __irq AD7843_Int(void)
{
rI_ISPC |= BIT_SIO;
switch(TouchState)
{
case 0x00:
TouchState = 0x01;
rSIODAT = 0x00;
rSIOCON|=(1<<3);
break;
case 0x01:
TouchState = 0x02;
touch_x[touch_check_count] = rSIODAT;
touch_x[touch_check_count] <<= 8;
rSIODAT = 0x00;
rSIOCON|=(1<<3);
break;
case 0x02:
TouchState = 0x03;
touch_x[touch_check_count] += rSIODAT;
rSIODAT = 0x00;
rSIOCON|=(1<<3);
break;
case 0x03:
TouchState = 0x04;
rSIODAT = 0xd3;
rSIOCON|=(1<<3);
break;
case 0x04:
TouchState = 0x05;
rSIODAT = 0x00;
rSIOCON|=(1<<3);
break;
case 0x05:
TouchState = 0x06;
touch_y[touch_check_count] = rSIODAT;
touch_y[touch_check_count] <<= 8;
rSIODAT = 0x00;
rSIOCON|=(1<<3);
break;
case 0x06:
TouchState = 0x07;
touch_y[touch_check_count] += rSIODAT;
rSIODAT = 0x98;
rSIOCON|=(1<<3);
touch_check_count++;
if(touch_check_count == 3)
{
int touch_tmp_x,touch_tmp_y;
touch_check_count = 0;
//xPos X坐标
if(touch_x[0]>touch_x[1]) //高低字节交换
{
touch_tmp_x=touch_x[0];
touch_x[0]=touch_x[1];
touch_x[1]=touch_tmp_x;
}
if(touch_x[1]>touch_x[2])
{
touch_tmp_x=touch_x[1];
touch_x[1]=touch_x[2];
touch_x[2]=touch_tmp_x;
}
if(touch_x[0]>touch_x[1])
{
touch_tmp_x=touch_x[0];
touch_x[0]=touch_x[1];
touch_x[1]=touch_tmp_x;
}
//yPos Y坐标
if(touch_y[0]>touch_y[1])
{
touch_tmp_y=touch_y[0];
touch_y[0]=touch_y[1];
touch_y[1]=touch_tmp_y;
}
if(touch_y[1]>touch_y[2])
{
touch_tmp_y=touch_y[1];
touch_y[1]=touch_y[2];
touch_y[2]=touch_tmp_y;
}
if(touch_y[0]>touch_y[1])
{
touch_tmp_y=touch_y[0];
touch_y[0]=touch_y[1];
touch_y[1]=touch_tmp_y;
}
touch_x[1] >>= 6; // 除以64
// touch_x[1] = (touch_x[1] - Positionx0)*LCD_XSIZE/(Positionx1 - Positionx0); //校准
touch_y[1] >>= 6;
// touch_y[1] = (touch_y[1]- Positiony0)*LCD_YSIZE/(Positiony1 - Positiony0);
// if((xPos!=touch_x[1])||(yPos!=touch_y[1]))
// {
xPos = touch_x[1];
yPos = touch_y[1];
// Pos_change++; //position changed, 处理程序 Pos_change--
// }
if(!Buttons) //Pressed button
{
Buttons = 0x81;
Buttons_change++;
}
Adjust();
}
break;
case 0x07:
rPDATF |= 0x040; //cs = 1
touch_check = 3;
touch_check_delay = 20;
break;
}
}
U8 Adjust(void)
{
if(flag==2)
{
if(yPos>100 && yPos<280)
{
if (xPos>0 && xPos<95)
{
Uart_Printf("您按的数字为1\r");//串口输出
ledon=0x14; //数码管显示1
}
else if (xPos>95 && xPos<190)
{
Uart_Printf("您按的数字为2\r");
ledon=0xb3;//数码管显示2
}
else if (xPos>190 && xPos<285)
{
Uart_Printf("您按的数字为3\r");
ledon=0xb6;
}
else if (xPos>285 && xPos<380)
{
Uart_Printf("您按的数字为4\r");
ledon=0xd4;
}
else if (xPos>380&& xPos<475)
{
Uart_Printf("您按的数字为5\r");
ledon=0xe6;
}
}
else if (yPos>280 && yPos<470)
{
if (xPos>0 && xPos<95)
{
Uart_Printf("您按的数字为6\r");
ledon=0xe7;
}
else if (xPos>95 && xPos<190)
{
Uart_Printf("您按的数字为7\r");
ledon=0x34;
}
else if (xPos>190 && xPos<285)
{
Uart_Printf("您按的数字为8\r");
ledon=0xf7; //
}
else if (xPos>285 && xPos<380)
{
Uart_Printf("您按的数字为9\r");
ledon=0xf6;
}
else if (xPos>380&& xPos<475)
{
Uart_Printf("您按的数字为0\r");
ledon=0x77;
}
}
}
else if (!flag)
{
flag++;
}
else if(flag==1)
{
flag++;
Uart_Printf("Ok!\n");
}
return 1;
}
void Touch_check(void) //被Rtc_Tick调用
{
if((rPDATG & 0x02) == 0)
{
if(touch_check == 0)
{
touch_check = 1;
touch_check_delay = 10;
}
else if(touch_check == 1)
{
if(touch_check_delay)
{
touch_check_delay--;
}
else
{
touch_check = 2;
rPDATF &= 0x1bf; //cs = 0
TouchState = 0x00;
rSIODAT = 0x93;
rSIOCON|=(1<<3);
}
}
else if(touch_check ==3)
{
touch_check = 1;
touch_check_delay = 10;
}
}
else
{
if(touch_check == 1)
{
touch_check = 0;
if(Buttons)
{
Buttons = 0;
Buttons_change++;
}
touch_check_count = 0;
}
else if(touch_check == 3)
{
touch_check = 0;
Buttons = 0;
Buttons_change++;
touch_check_count = 0;
}
}
}
void __irq TouchTimerDone(void)
{
rI_ISPC |= BIT_TIMER1;
Touch_check();
}
/****************************************
****************************************/
void Test_Touch(void)
{
int i,j;
rINTMSK =0x03ffffff;
rINTMSK &= (~BIT_TIMER1);
pISR_TIMER1=(int)TouchTimerDone;
rTCFG0 |= 0x0f; //dead zone=0,pre2=0,pre1=0,pre0=0xf
rTCFG1 &= 0xfffff0f;
rTCFG1 |= 0x10; //all interrupt,mux1=1/4
rTCNTB1 = 5000; //(1/(60MHz/15/4))*1000=1ms
rTCON &= 0xffff0ff;
rTCON |= 0x0000200; //update T5/T4/T3/T2/T1/T0
rTCON &= 0xffff0ff;
rTCON |= 0x0000900; //T5/T4/T3/T2/T1=auto reload,T0=one shot,all_start
rPCONG &= 0xfff3; //EINT1
rPUPG &= 0xfffd; //pull up enable
pISR_SIO=(unsigned)AD7843_Int;//中断地址
rINTMSK &= (~BIT_SIO);//enable sio intrupt 使能SIO中断
rPDATF |= 0x040; //cs = 0 pf6=1, enable ads7843
rPCONF=(rPCONF&0x3ff)+(3<<19)+(3<<16)+(01<<13)+(3<<10);
//pf8 sioclk,pf7 siorxd,pf6 output,pf5 siotxd
rPUPF &=0x1bf;//pull up pf6
rSBRDR=0x40;
rIVTCNT=0;
rSIOCON=1|(0<<2)|(0<<4)|(1<<5)|(0<<6);//rxd and txd,and sio intrupt mode
Uart_Printf("请点击触摸屏,观察相应坐标显示变化情况:\n");
while(1);
}
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