ts_sep.c

SAMSUNG官方发布的S3C2410开发板的最完整测试程序。本人用ADS1.2对其进行了优化和改进

#include <string.h>
#include "2410addr.h"
#include "2410lib.h"
#include "Ts_sep.h"
#include "def.h"

#define LOOP 1
#define ADCPRS 39


void __irq Adc_or_TsSep(void)
{
    int i;
    U32 Pt[6];
    rINTSUBMSK|=(BIT_SUB_ADC|BIT_SUB_TC);	// Mask sub interrupt (ADC and TC) 

    // TC(Touch screen Control) Interrupt	
    if(rADCTSC&0x100)
    {
	Uart_Printf("\nStylus Up!!\n");
	rADCTSC&=0xff;	// Set stylus down interrupt
    }
    else 
    {
	Uart_Printf("\nStylus Down!!\n");
           
    	// <X-Position Read>
	rADCTSC=(0<<8)|(0<<7)|(1<<6)|(1<<5)|(0<<4)|(1<<3)|(0<<2)|(1);
    	    // Down,Hi-Z,AIN5,GND,Ext vlt,Pullup Dis,Normal,X-position
	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(!(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[AIN6] is %04d\n", Pt[5]);

    	// <Y-Position Read>
	rADCTSC=(0<<8)|(0<<7)|(1<<6)|(1<<5)|(0<<4)|(1<<3)|(0<<2)|(2);
    	    // Down,GND,Ext vlt,Hi-Z,AIN7,Pullup Dis,Normal,Y-position
	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(!(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]);
    	rADCTSC=(1<<8)|(1<<7)|(1<<6)|(0<<5)|(1<<4)|(0<<3)|(0<<2)|(3);
   	    // Up,GND,AIN,Hi-z,AIN,Pullup En,Normal,Waiting mode
    }

    rSUBSRCPND|=BIT_SUB_TC;
    rINTSUBMSK=~(BIT_SUB_TC);	// Unmask sub interrupt (TC)     
    ClearPending(BIT_ADC);
}
			

void Ts_Sep(void)
{
    Uart_Printf("[Touch Screen Test.]\n");
    Uart_Printf("Separate X/Y position conversion mode test\n");

    rADCDLY=(50000);	// ADC Start or Interval Delay

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

    pISR_ADC=(unsigned)Adc_or_TsSep;
    rINTMSK=~(BIT_ADC);
    rINTSUBMSK=~(BIT_SUB_TC);

    Uart_Printf("\nType any key to exit!!!\n");
    Uart_Printf("\nStylus Down, please...... \n");
    
    Uart_Getch();

    rINTSUBMSK|=BIT_SUB_TC;
    rINTMSK|=BIT_ADC;
    Uart_Printf("[Touch Screen Test.]\n");
}