www.pudn.com > s3c2443_test_code.zip > Adcts.c

/***************************************** 
  NAME: Adcts.c 
  DESC: ADC & Touch screen test 
  HISTORY: 
  2006.12.18:GOM: draft ver 1.0 
 *****************************************/ 
 
#include "system.h" 
#include "adcts.h" 
 
#define REQCNT 30 
#define ADCPRS 9	//YH 0627 
#define LOOP 1 
 
int ReadAdc(int ch);    //Return type is int, Declare Prototype function 
void __irq AdcTsAuto(void); 
 
int count=0; 
volatile int xdata, ydata; 
 
void * func_adc_test[][2]= 
{	 
	(void *)Test_Adc,   			"ADC test                                  ", 
	(void *)Test_AdcTs,   			"ADC TS test                              ", 
	0,0 
}; 
 
void Test_ADC(void) 
{   
	int i; 
 
	while(1) 
	{ 
		i=0; 
		printf("\n\n"); 
		while(1) 
		{   //display menu 
	   		printf("%2d:%s",i,func_adc_test[i][1]); 
	    	i++; 
	    	if((int)(func_adc_test[i][0])==0) 
	    	{ 
				printf("\n"); 
				break; 
	    	} 
	    	if((i%3)==0) 
	    	printf("\n"); 
		} 
 
		printf("\nSelect (\"-1\" to exit) : "); 
		i = GetIntNum(); 
		if(i==-1)  
	   		break;		// return. 
		if( (i<((sizeof(func_adc_test)-1)/8)) )	// select and execute... 
	    	( (void (*)(void)) (func_adc_test[i][0]) )(); 
	} 
	 
} 
 
void Test_Adc(void) 
{ 
	int a0=0,a1=0,a2=0,a3=0,a4=0; //Initialize variables 
	int a5=0,a6=0,a7=0, a8=0, a9=0; //Initialize variables 
 
	printf("The ADC_IN are adjusted to the following values.\n");         
	printf("Push any key to exit!!!\n");     
	printf("ADC conv. freq.=%d(Hz)\n",(int)(PCLK/(ADCPRS+1.))); // ADC Freq. = PCLK/(ADCPSR+1), ADC conversion time = 5CYCLES*(1/(ADC Freq.)) 
 
	while(Uart_GetKey()==0) 
	{ 
	a0=ReadAdc(0); 
	a1=ReadAdc(1); 
	a2=ReadAdc(2); 
	a3=ReadAdc(3); 
	a4=ReadAdc(4);     
	a5=ReadAdc(5); 
	a6=ReadAdc(6); 
	a7=ReadAdc(7);     
	a8=ReadAdc(8); 
	a9=ReadAdc(9); 
 
	printf("AIN0: %04d AIN1: %04d AIN2: %04d AIN3: %04d, AIN4: %04d", a0,a1,a2,a3,a4); 
	printf("AIN5: %04d AIN6: %04d AIN7: %04d AIN8: %04d, AIN9: %04d \n", a5,a6,a7,a8,a9); 
	} 
 
	rADCCON |= (0<<14) | (19<<6) | (7<<3) | (1<<2);     //stand by mode to reduce power consumption  
	printf("rADCCON = 0x%x\n", rADCCON); 
} 
 
int ReadAdc(int ch) 
{ 
	int i; 
	static int prevCh=-1; 
 
	if(prevCh!=ch) 
	{ 
		rADCCON |= (1<<14) | (ADCPRS<<6);   //setup channel, ADCPRS 
		rADCMUX = ch; 
		for(i=0;i