pot.c

来自「ADI公司的ARM7的功能模块的源码」· C语言 代码 · 共 45 行

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

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

 Date          : Sept. 2005

 File          : pot.c

 Hardware      : Applicable to ADuC7020/ADuC7024/ADuC7026
                 Currently targetting ADuC7026.


 Description   : Performs repeated single ADC conversions on ADC0
                 Adjusts output of DAC1 to vary with potentiometer
				 S1.3 adn S1.8 must be in ON position on board for
				 this demonstration
		
*********************************************************************/
#include<aduc7026.h>

void ADCpoweron(int);

int main(void){

// ADC and DAC configuration
ADCpoweron(20000);			// power on ADC	
ADCCP = 0x00;				// conversion on ADC0
DAC1CON = 0x13;				// AGND-AVDD range
REFCON = 0x01;				// internal 2.5V reference

while (1) {
	ADCCON = 0x6A3;			// software conv., single-ended, conv. enabled
	while (!ADCSTA){}		// wait for end of conversion
	DAC1DAT = ADCDAT;		// result format is identical for DAC and ADC
	}				
}


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