大虾：
本人在使用下面的代码进行AD的时候，发现数据很不稳定
unsigned short int read_channel(unsigned char channel)
{ unsigned short int temp;
//discharge();
ADCCON = 0x6E4; //Continuous software conversion.
temp = 0xffff; ADC.dd[1] = 0x00;
ADCCP = channel;
my_delay(1);
while (ADC.dd[1]!=temp)
{
ADCCP = channel;
temp = ADC.dd[1];
while (!ADCSTA); // wait for end of conversion
ADC.data = ADCDAT;
}
return(ADC.dd[1]);
}
希望大虾能够帮忙分析原因。 |
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