我有一个ADC中断,我想对通道(ADCBUF0)进行8次采样,然后取样本的平均值。我的代码使用标志跳出if语句。代码编译,我的变量在其他地方初始化。有人可以告诉我为什么我没有收到SpeedADC的价值???
///////Global////////////
int SpeedADCcount=0;
/////////////////////////
SpeedADCflag=1;
if(SpeedADCflag==1) //The following is meant to take a an average of the incoming ADC voltages
{
SpeedADCcount++;
for(i = SpeedADCcount; i < 16; i++)
{
while(!ADCON1bits.SAMP); //Sample Done?
ADCON1bits.SAMP=0; //Start Converting
while(!ADCON1bits.DONE); //Conversion Done? Should be on next Tcy cycle
SpeedADCarray[i] = ADCBUF0;
SpeedADCflag=0;
}
}
if(SpeedADCcount==15)
{
SpeedADC=SpeedADCarray[i]>>4;
SpeedADCcount=0;
// Re-enable the motor if it was turned off previous
if((SpeedADC>246) && Flags.RunMotor==0){RunMotor();}
/*Go through another stage of "filtering" for any analog input voltage below 1.25volts
答案 0 :(得分:3)
你需要获得正确的降档量(以避免分裂),这样8 - > 3,16 - &gt; 4等。对于8个样本,您只需要降档3(3位)。
您需要将所有值汇总到一个值中,而不是将它们放在单独的数组条目中。
SpeedADCarray += ADCBUF0; /* accumulate in a single integer, not an array */