ADC级联过采样模式

2014-10-23 22:08:53

4952

ADC级联过采样模式中的测试程序为什么要这样写呢？
for (i=0; i<(BUF_SIZE/16); i++)
   {
   // Wait for int1
   while (AdcRegs.ADCST.bit.INT_SEQ1== 0){}//等待本次序列结束
   GpioDataRegs.GPASET.bit.GPIO0 = 1;  // Set GPIO60 for monitoring  -optional

   AdcRegs.ADCST.bit.INT_SEQ1_CLR = 1;  //清除中断信号

#if INLINE_SHIFT    //当数据从结果寄存器中取出时的移动结果
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT0)>>4);
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT1)>>4);
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT2)>>4);
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT3)>>4);
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT4)>>4);
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT5)>>4);
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT6)>>4);
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT7)>>4);

#endif //-- INLINE_SHIFT

#if NO_SHIFT || POST_SHIFT

   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT0));
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT1));
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT2));
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT3));
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT4));
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT5));
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT6));
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT7));

#endif //-- NO_SHIFT || POST_SHIFT

   while (AdcRegs.ADCST.bit.INT_SEQ1== 0){}
         GpioDataRegs.GPACLEAR.bit.GPIO0 = 1;  // Clear GPIO0 for monitoring  -optional
   AdcRegs.ADCST.bit.INT_SEQ1_CLR = 1;

#if INLINE_SHIFT

   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT8)>>4);
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT9)>>4);
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT10)>>4);
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT11)>>4);
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT12)>>4);
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT13)>>4);
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT14)>>4);
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT15)>>4);

#endif //-- INLINE_SHIFT

#if NO_SHIFT || POST_SHIFT

   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT8));
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT9));
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT10));
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT11));
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT12));
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT13));
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT14));
   SampleTable[array_index++]= ( (AdcRegs.ADCRESULT15));
#endif // -- NO_SHIFT || POST_SHIFT

      }

#if POST_SHIFT
// For post shifting, shift the ADC results
// in the SampleTable buffer after the buffer is full.
for (i=0; i
{
   SampleTable = ((SampleTable) >>4);
}