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楼主 | 2016-5-4 20:02 | 只看该作者回帖奖励

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ADC, AD, dc, se, interrupt

interrupt void adc_isr(void);

// Global variables used in this example:
Uint16 LoopCount;
Uint16 ConversionCount;
Uint16 Frequence;//5,10,15,20,25,30,35,40,45,50Hz:
Uint16 Voltage;  //30,49,66,88,110,154,176,180,220v:

void DSP281x_ADCIO(void)
{
InitAdc();  // For this example, init the ADC
// Enable ADCINT in PIE
PieCtrlRegs.PIEIER1.bit.INTx6 = 1;
IER |= M_INT1; // Enable CPU Interrupt 1
EINT;       // Enable Global interrupt INTM
ERTM;       // Enable Global realtime interrupt DBGM

LoopCount = 0;
ConversionCount = 0;

// Configure ADC:start/stop mode
AdcRegs.ADCMAXCONV.all = 0x0000;    // Setup 2 conv's on SEQ1
AdcRegs.ADCCHSELSEQ1.bit.CONV00 = 0x3; // Setup ADCINA3 as 1st SEQ1 conv.

AdcRegs.ADCTRL2.bit.EXT_SOC_SEQ1 = 1;  // Enable EXTSOC to start SEQ1
AdcRegs.ADCTRL2.bit.INT_ENA_SEQ1 = 1;  // Enable SEQ1 interrupt (every EOS)
// Wait for ADC interrupt
while(1)
{
   LoopCount++;
}

}
interrupt void  adc_isr(void)  // interrupt :Keyword
{
  Frequence =(Uint16)((AdcRegs.ADCRESULT0 >>6)/81.6);//Input the Frequence
  Voltage =(Uint16)(4.4*Frequence);//Acorrding with VVVF curve get the voltage

  // If 40 conversions have been logged, start over
  if(ConversionCount == 1)
  {
   ConversionCount = 0;
  }
  else ConversionCount++;

  // Reinitialize for next ADC sequence
  AdcRegs.ADCTRL2.bit.RST_SEQ1 = 1;       // Reset SEQ1
  AdcRegs.ADCST.bit.INT_SEQ1_CLR = 1;    // Clear INT SEQ1 bit
  PieCtrlRegs.PIEACK.all = PIEACK_GROUP1; // Acknowledge interrupt to PIE
  return;
}

使用特权