touch.c

嵌入式方面的一些简单程序

#ifndef TOUCH_C
#define TOUCH_C

#include "2410addr.h"
#include "Def.h"
#include "Gui.h"
#include "Dma.h"

int XPosition=0;
int YPosition=0;

void  __irq Down(void)
{   
    int Pt[5];
    int i;
    rINTMSK|=0x80000000;
    rINTSUBMSK|=0x00000200;
    rADCTSC=0<<7|1<<6|1<<5|0<<4|1<<2|1;
    for(i=0;i<5;i++)				//5 times
    {
       rADCCON|=0x1;               // Start Y-position conversion
       while(rADCCON & 0x1);       // Check if Enable_start is low
       while(!(0x8000&rADCCON));   // Check ECFLG
       Pt[i]=(0x3ff&rADCDAT0);
     }      
    XPosition=(Pt[0]+Pt[1]+Pt[2]+Pt[3]+Pt[4])/5;
    //rADCCON|=0x1;
    //while(!(0x8000&rADCCON));
    //XPosition=0x03ff&rADCDAT0;
    XPosition=(XPosition)*1.04-133.3;
    rADCTSC=1<<7|0<<6|0<<5|1<<4|1<<2|2;
    for(i=0;i<5;i++)				//5 times
    {
        rADCCON|=0x1;               // Start Y-position conversion
        while(rADCCON & 0x1);       // Check if Enable_start is low
        while(!(0x8000&rADCCON));   // Check ECFLG
        Pt[i]=(0x3ff&rADCDAT1);
    }
    YPosition=(Pt[0]+Pt[1]+Pt[2]+Pt[3]+Pt[4])/5;//求一个平均值
    //YPosition=0x03ff&rADCDAT1;
    YPosition=YPosition*(0.79)-657.3;
    YPosition=-YPosition;
    rADCTSC=1<<7|1<<6|0<<5|1<<4|0<<3|0<<2|3;
    //Pen_Color=Color_Red;
    rSUBSRCPND|=(1<<9);
    //rSUBSRCPND|=(1<<10);
    rSRCPND|=(1<<31);
    rINTPND|=(1<<31);
    rINTSUBMSK&=~(1<<9);
    rINTMSK&=~(1<<31);
    
}
void TouchDriver(void)
{
    rGPGCON|=0xff000000;
    rADCCON=1<<14|49<<6|0<<2|0<<1;
    rADCDAT0=0<<15|1<<14|3<<12;
    rADCDAT1=0<<15|1<<14|3<<12;
    rADCTSC=1<<7|1<<6|0<<5|(1<<4)|0<<3|0<<2|3;
    pISR_ADC=(unsigned)Down;
    rINTSUBMSK&=~(1<<9);
    rINTMSK&=~(1<<31);
}
#endif