tp.c

自己编写的

#include <string.h>
#include "..\inc\def.h"
#include "..\inc\44b.h"
#include "..\inc\44blib.h"
#include "..\inc\tp.h"

volatile unsigned char  adcend=0;
//unsigned int LOOP = 1000;
void __irq Adc_or_TsSep(void);

//writed by liangweidong 2005-9-7
//initinlization the ADC channels and the ADC interrupte
void adc_init(void)
{
	//TSPX(GPE4) TSPY(GPE5) TSMY(GPE6) TSMX(GPE7)
	//  0		1	 1          0
	rPUPE=0x0;	
	rPDATE=0X68;	//should be enabled	
	Delay(100);		//delay to set up the next channel
//	Uart_Printf("[Touch Screen Test.]\n");
	rEXTINT=0x22222222;
	rINTCON=0x5;
	pISR_EINT3=(int)Adc_or_TsSep;
	    
	rCLKCON=0x7ff8;
	rADCPSR=0x4;
	rINTMSK=~(BIT_GLOBAL|BIT_EINT3);

}

//writed by liangweidong 2005-9-7
//start converat  the current ADC chennal
void adc_start(void)
{
	rADCCON = 0x1 | (0x0<<2);
}

//writed by liangweidong 2005-9-7
//close the ADC interrupte
void adc_close(void)
{
	rINTMSK |=BIT_GLOBAL|BIT_EINT3;
}

//writed by liangweidong 2005-9-7
//get voltage in the current channel
void __irq get_voltage(void)
{
	int i;
	U32 Pt[6];
	rI_ISPC=BIT_EINT3;	//clear pending_bit
		
	//TSPX(GPE4) TSPY(GPE5) TSMY(GPE6) TSMX(GPE7)
	//  0		1	    0          1
	rPDATE=0XA8;
	// <X-Position Read>
	rADCCON=0x1<<2;			// AIN1
	Delay(100);				//delay to set up the next channel
	for(i=0;i<5;i++)
		{
	    	    rADCCON|=0x1;		// Start X-position conversion
		    while(rADCCON & 0x1);	// Check if Enable_start is low
	    	    while(!(rADCCON & 0x40));	// Check ECFLG
		    Pt[i]=(0x3ff&rADCDAT);
		}
	Pt[5]=(Pt[0]+Pt[1]+Pt[2]+Pt[3]+Pt[4])/5;
//	Uart_Printf("X-Posion[AIN1] is %04d\n", Pt[5]);

	// <Y-Position Read>
	//TSPX(GPE4) TSPY(GPE5) TSMY(GPE6) TSMX(GPE7)
	//  1		0	      1          0
	rPDATE=0X58;
	rADCCON=0x0<<2;			// AIN0
	Delay(100);					//delay to set up the next channel
	for(i=0;i<5;i++)
		{
	    	    rADCCON|=0x1;		// Start X-position conversion
		    while(rADCCON & 0x1);	// Check if Enable_start is low
	    	    while(!(rADCCON & 0x40));	// Check ECFLG
		    Pt[i]=(0x3ff&rADCDAT);
		}
	Pt[5]=(Pt[0]+Pt[1]+Pt[2]+Pt[3]+Pt[4])/5;
//	Uart_Printf("Y-Posion[AIN0] is %04d\n", Pt[5]);
	adcend=1;
	Delay(100);		//delay to set up the next channel
	rPDATE=0X68;	//should be enabled	
	Delay(100);		//delay to set up the next channel
}







		
void __irq Adc_or_TsSep(void)
{
    int i;
    U32 Pt[6];
     rI_ISPC=BIT_EINT3;	//clear pending_bit
	
	//TSPX(GPE4) TSPY(GPE5) TSMY(GPE6) TSMX(GPE7)
        //  0		1	    0          1
	rPDATE=0XA8;
	// <X-Position Read>
	rADCCON=0x1<<2;			// AIN1
//	for(i=0;i<LOOP;i++);		//delay to set up the next channel
	for(i=0;i<5;i++)
	{
    	    rADCCON|=0x1;		// Start X-position conversion
	    while(rADCCON & 0x1);	// Check if Enable_start is low
    	    while(!(rADCCON & 0x40));	// Check ECFLG
	    Pt[i]=(0x3ff&rADCDAT);
	}
	Pt[5]=(Pt[0]+Pt[1]+Pt[2]+Pt[3]+Pt[4])/5;
	Uart_Printf("X-Posion[AIN1] is %04d\n", Pt[5]);

    	// <Y-Position Read>
    	//TSPX(GPE4) TSPY(GPE5) TSMY(GPE6) TSMX(GPE7)
        //  1		0	      1          0
	rPDATE=0X58;
	rADCCON=0x0<<2;			// AIN0
//	for(i=0;i<LOOP;i++);		//delay to set up the next channel
	for(i=0;i<5;i++)
	{
    	    rADCCON|=0x1;		// Start X-position conversion
	    while(rADCCON & 0x1);	// Check if Enable_start is low
    	    while(!(rADCCON & 0x40));	// Check ECFLG
	    Pt[i]=(0x3ff&rADCDAT);
	}
	Pt[5]=(Pt[0]+Pt[1]+Pt[2]+Pt[3]+Pt[4])/5;
	Uart_Printf("Y-Posion[AIN0] is %04d\n", Pt[5]);
    	adcend=1;
//    	for(i=0;i<LOOP;i++);		//delay to set up the next channel
    	rPDATE=0X68;	//should be enabled	
//    	for(i=0;i<LOOP;i++);		//delay to set up the next channel
}
			

void Ts_Sep(void)
{
//     int i;
    
    //TSPX(GPE4) TSPY(GPE5) TSMY(GPE6) TSMX(GPE7)
    //  0		1	 1          0
    rPUPE=0x0;	
    rPDATE=0X68;	//should be enabled	
//    for(i=0;i<LOOP;i++);		//delay to set up the next channel
    Uart_Printf("[Touch Screen Test.]\n");
    Uart_Printf("Separate X/Y position conversion mode test\n");
    Uart_Printf("\nType any key to exit!!!\n");
    Uart_Printf("\nStylus Down, please...... \n");
    
    rEXTINT=0x22222222;
    rINTCON=0x5;
    pISR_EINT3=(int)Adc_or_TsSep;
    
    rCLKCON=0x7ff8;
    rADCPSR=0x4;
    rINTMSK=~(BIT_GLOBAL|BIT_EINT3);
    
    Uart_Getch();
    rINTMSK |=BIT_GLOBAL|BIT_EINT3;
    Uart_Printf("[Touch Screen Test Over]\n");
    
}