void main(void){
INT8 adc_value;
UINT8 potVoltage = 0;
BOOL updateLCD = TRUE;
initLcd();
initAdc();
while(1){
ADC_ENABLE_CHANNEL(ADC_AIN7);
ADC_SINGLE_CONVERSION(ADC_REF_AVDD | ADC_8_BIT | ADC_AIN7);
ADC_SAMPLE_SINGLE();
while(!ADC_SAMPLE_READY());
adc_value = ADCH;
if (potVoltage != scaleValue(adc_value)){
//potVoltage changed since last sample
potVoltage = scaleValue(adc_value);
updateLCD = TRUE;
}
if (updateLCD){
updateVoltageLCD(potVoltage, adc_value);
updateLCD = FALSE;
}
updateCounter(adc_value);
halWait(10);
}
} // End of main
为什么每次但不调试的时候ADCH寄存器的值一直都变啊，都是0x00？
求助！！！