求助：PIC16F690 A/D 问题

只看该作者 · 2007-12-7 10:24

为什么我在IDE 7.62 模拟仿真时总是出现下面的警告，是什么意思？怎样解决？
ADC-W0008: No stimulus file attached to ADRESL for A/D.

int ADConvt(unsigned char channel)  // ADC sample sub-routine
{

    unsigned char i;            // counter
    union{
        unsigned int temp;
        unsigned char dt[2];
    }ad;

    static int adc_result;


    for(i=1, adc_result=0x0000; i<=16; i++)
    {
        __disable_interrupt();
        ADCON0=0;
        ADCON0 = 0x81;
        ADCON0 |= (channel<<2);   // select ADC channel
        asm("NOP");
        asm("NOP");
        asm("NOP");
        asm("NOP");
        asm("NOP");
        asm("NOP");
        GO=1;    // start ADC
        while(GO) continue;                // wait ADC sample complete
        ad.dt[0]=ADRESL;
        ad.dt[1]=ADRESH;    // store ADC result
        adc_result +=(int)ad.temp;
    }
    ADON =0;            // Stop ADC
    return (adc_result/16);
}

只看该作者 · 2007-12-7 10:39

求助：PIC16F690 A/D 问题

ADC这个部件做模拟仿真时要有激励