adccont.c

来自「采用IAR在线调试ADI公司基于ARM7内核的AUUC7026的ADC程序」· C语言 代码 · 共 55 行

/*********************************************************************

 Author        : ADI - Apps            www.analog.com/MicroConverter

 Date          : Sept. 2005

 File          : ADCcont.c

 Hardware      : ADuC702x Rev I silicon

 Description   : Performs 1024 continuous ADC conversions on ADC0,
		 store the results in SRAM.

		
*********************************************************************/

#include "ioADuC7026.h"

void ADCpoweron(int);

int main (void)  {

	unsigned short ADCDATA[100];
	int i;
	
 	ADCpoweron(2000);					// power on ADC											
  	ADCCP = 0x00; //ADC conversions on ADC0
	REFCON = 0x01;					        // internal 2.5V reference. 2.5V on Vref pin

        GP4DAT = 0x04000000;			                // P4.2 configured as an output. LED is turned on	
	GP0CON = 0x100000; 					// 01 Enable ADCbusy on P0.5
	
        ADCCON = 0x06A4;                                        // ADC at default sampling frequency,fADC/2

	while(1)
	{
		for (i=0; i <100; i++)
		{
			while (!ADCSTA){}			// wait for end of conversion
			ADCDATA[i] = ( ADCDAT>> 16);
		}
		GP4DAT ^= 0x00040000;			        // Complement P4.2

	}
}

	
void ADCpoweron(int time)
{
	ADCCON = 0x620;	 					// power-on the ADC
	while (time >=0)	  				// wait for ADC to be fully powered on
    time--;
}