touch.c

三星ARM芯片s3c2410基于ucosii

#include "Touch.h"
#include "../../target/2410addr.h"
#include "../../ucos-ii/includes.h"
#include "../../target/2410lib.h"
#include <string.h>
#include "def.h"


#define ADCPRS 39
#define chi  1

#define TOUCH_XSIZE  (640)
#define TOUCH_YSIZE  (480)

#define TOUCH_AD_LEFT   960//0x16//0x15b//0x120   
#define TOUCH_AD_RIGHT  60//0x1fe//0xec8//0xe70
#define TOUCH_AD_TOP    50//0x200//0x1d6//0x230
#define TOUCH_AD_BOTTOM 960//0x3d8//0xdee//0xdf0

int xPhys, yPhys;

void __irq Touch_Isr(void)
{
  
  int i;
  U32 Pt[6];

  /* calculate Min / Max values */
  

    rINTSUBMSK|=(BIT_SUB_ADC|BIT_SUB_TC);	// Mask sub interrupt (ADC and TC) 
    
           if(rADCTSC & 0x100)
    {
        Uart_Printf("\nStylus Up!!\n");
        rADCTSC &= 0xff;    // Set stylus down interrupt
    }
    else
    {
   // Uart_Printf("\nStylus Up!!\n");
   rADCTSC=(0<<8)|(0<<7)|(1<<6)|(1<<5)|(0<<4)|(1<<3)|(0<<2)|(1);
	//Uart_Printf("\nStylus Down!!\n");
    for(i=0;i<chi;i++);
    for(i=0;i<5;i++)
    {
	rADCCON|=0x1;	// Start Auto conversion

	while(rADCCON & 0x1);		//check if Enable_start is low
	while(!(0x8000&rADCCON));	// Check ECFLG

	
	 Pt[i] = (0x3ff&rADCDAT0);
    }
    Pt[5]=(Pt[0]+Pt[1]+Pt[2]+Pt[3]+Pt[4])/5; 
	Uart_Printf("X-Posion[AIN5] is %04d\n", Pt[5]);
	xPhys=Pt[5];
	rADCTSC=(0<<8)|(0<<7)|(1<<6)|(1<<5)|(0<<4)|(1<<3)|(0<<2)|(2);
	for(i=0;i<chi;i++);
    for(i=0;i<5;i++)
    {
	rADCCON|=0x1;	// Start Auto conversion

	while(rADCCON & 0x1);		//check if Enable_start is low
	while(!(0x8000&rADCCON));	// Check ECFLG

	
	 Pt[i] = (0x3ff&rADCDAT1);
    }
    Pt[5]=(Pt[0]+Pt[1]+Pt[2]+Pt[3]+Pt[4])/5; 
	Uart_Printf("Y-Posion[AIN7] is %04d\n", Pt[5]);
	yPhys=Pt[5];
	rADCTSC=(1<<8)|(1<<7)|(1<<6)|(0<<5)|(1<<4)|(0<<3)|(0<<2)|(3);
   	// Stylus Up,Don't care,Don't care,Don't care,Don't care,XP pullup En,Normal,Waiting mode
    }
    rSUBSRCPND|=BIT_SUB_TC;
    rINTSUBMSK&=~(BIT_SUB_TC);	// Unmask sub interrupt (TC)     
    ClearPending(BIT_ADC);	
}


extern void Touch_IsrHandle(void);
void TOUCH_Init(void)
{
    rADCDLY=(50000);	// ADC Start or Interval Delay

    rADCCON = (1<<14)|(ADCPRS<<6)|(0<<3)|(0<<2)|(0<<1)|(0);	
    // Enable Prescaler,Prescaler,AIN5/7 fix,Normal,Disable read start,No operation
    rADCTSC=(0<<8)|(1<<7)|(1<<6)|(0<<5)|(1<<4)|(0<<3)|(0<<2)|(3);//tark
    // Down,YM:GND,YP:AIN5,XM:Hi-z,XP:AIN7,XP pullup En,Normal,Waiting for interrupt mode

    pISR_ADC=(unsigned)Touch_Isr;
	
    rINTMSK &= ~(BIT_ADC);
    rINTSUBMSK &= ~(BIT_SUB_TC);	
   
}