[問題] asm

[juan19283746 (小阮)]

#include <p18cxxx.h>
#include <adc.h>

void ADC_initial(void);
int result;

void main(void){

        TRISD=0;                                                                // Set PORTD for LED output
        ADC_initial();                                                  // Initial A/D module

        while(1){
                ConvertADC();                                           // Convert A/D
                while(BusyADC( ));                                      // Waiting A/D until done
                result = ReadADC();
                PORTD = result>>8;                                      // Put A/D result on LEDs
        }
}


void ADC_initial(void)
{

        OpenADC( ADC_FOSC_8 &                                   // A/D Conversion clock
                ADC_LEFT_JUST &                                         // A/D result format left justified
                ADC_20_TAD,                                                     // A/D Acquisition time
                ADC_CH0 &                                                       // Input analog data from channel 0 (CH0,AN0,RA0)
                ADC_INT_OFF &                                           // No interrupt
                ADC_VREFPLUS_VDD &                                      // VREF+ = VDD
                ADC_VREFMINUS_VSS,                                      // VREF- = VSS
                14 );                                                           // AN0 is analog input, others are Digital I/O
}






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