[DSP编程] 28335ADC进不去中断啊，大家看一看什么原因

<p>#define ADC_CKPS   0xf   // ADC module clock = HSPCLK/2*ADC_CKPS   = 25.0MHz/(1*2) = 12.5MHz

#define ADC_SHCLK  0xF   // S/H width in ADC module periods                        = 16 ADC clocks

#define AVG        1000  // Average sample limit

#define ZOFFSET    0x00  // Average Zero offset</p><p>

</p><p>

</p><p><p>  InitSysCtrl();</p><p>

  EALLOW;

  SysCtrlRegs.HISPCP.all = ADC_MODCLK;        // HSPCLK = SYSCLKOUT/ADC_MODCLK

  EDIS;



    InitGpio();

    InitCapl(); 

    InitAdc();  // For this example, init the ADC

    InitEpwm();

    PID_init();



// Step 3. Clear all interrupts and initialize PIE vector table:

// Disable CPU interrupts

   DINT;





   InitPieCtrl();



// Disable CPU interrupts and clear all CPU interrupt flags:

   IER = 0x0000;

   IFR = 0x0000;</p><p>

   InitPieVectTable();



   EALLOW;  // This is needed to write to EALLOW protected registers

   //PieVectTable. ECAP1_INT = &ISRCap1;

   //PieVectTable. ECAP2_INT = &ISRCap2; 

   //PieVectTable. ECAP3_INT = &ISRCap1;

   //PieVectTable.TINT0 = &ISRTimer0;

  

   PieVectTable.ADCINT = &adc_isr;

   

   //PieVectTable.XINT13 = &cpu_timer1_isr;

   //PieVectTable.TINT2 = &cpu_timer2_isr;

   EDIS;   

    

   IER |= M_INT1; // Enable CPU Interrupt 1

   PieCtrlRegs.PIEIER1.bit.INTx6 = 1;    //ADCINT</p><p>

        // Enable global Interrupts and higher priority real-time debug events:

    EINT;   // Enable Global interrupt INTM

    ERTM;   // Enable Global realtime interrupt DBGM</p><p>

////////////////////////////////////////////////////////////////////////</p><p><div class="blockcode"><blockquote><p></p><p>void InitAdc(void)

{

      extern void DSP28x_usDelay(Uint32 Count);</p><p>

  EALLOW;

    SysCtrlRegs.PCLKCR0.bit.ADCENCLK = 1;

    ADC_cal();

     EDIS

AdcRegs.ADCTRL3.all = 0x00E0;  // Power up bandgap/reference/ADC circuits

    DELAY_US(ADC_usDELAY);         // Delay before converting ADC channels   

AdcRegs.ADCTRL1.bit.ACQ_PS = ADC_SHCLK;  // Sequential mode: Sample rate   = 1/[(2+ACQ_PS)*ADC clock in ns]

                        //                     = 1/(3*40ns) =8.3MHz (for 150 MHz SYSCLKOUT)

         //                     = 1/(3*80ns) =4.17MHz (for 100 MHz SYSCLKOUT)

         // If Simultaneous mode enabled: Sample rate = 1/[(3+ACQ_PS)*ADC clock in ns]

  AdcRegs.ADCTRL3.bit.ADCCLKPS = ADC_CKPS;    </p><p>//AdcRegs.ADCTRL1.bit.CPS=1; //内核时钟预定标器，1为二分频</p><p> AdcRegs.ADCTRL1.bit.SEQ_CASC = 1;        // 1  Cascaded mode  级联模式

       AdcRegs.ADCCHSELSEQ1.bit.CONV00 = 0x0; // Setup ADCINA0 as 1st SEQ1 conv.</p><p>

       //AdcRegs.ADCST.bit.INT_SEQ1_CLR=1;

       //AdcRegs.ADCST.bit.INT_SEQ2_CLR=1;</p><p>      AdcRegs.ADCTRL1.bit.CONT_RUN = 1;       // Setup continuous run

      AdcRegs.ADCTRL1.bit.SEQ_OVRD = 0;       // Enable Sequencer override feature

      

    // Initialize all ADC channel selects to A0

      AdcRegs.ADCCHSELSEQ1.all = 0x0;

      AdcRegs.ADCCHSELSEQ2.all = 0x0;

   AdcRegs.ADCCHSELSEQ3.all = 0x0;

   AdcRegs.ADCCHSELSEQ4.all = 0x0;</p><p>   // AdcRegs.ADCTRL3.bit.SMODE_SEL = 1;     //0-顺序采样，1-同步采样

      AdcRegs.ADCMAXCONV.all = 0x0000;       // Setup ADA0 conv's on SEQ1

    </p><p>    AdcRegs.ADCTRL2.bit.INT_ENA_SEQ1 = 1; 

AdcRegs.ADCTRL2.bit.RST_SEQ1 = 1;

          AdcRegs.ADCTRL2.bit.SOC_SEQ1 = 1;

}

interrupt void adc_isr(void)

{

   while (AdcRegs.ADCST.bit.INT_SEQ1 == 0){}</p><p>  AdcA[Adc_isrTimes] = ((AdcRegs.ADCRESULT0)>>4);

  Adc_isrTimes++;</p><p> if(Adc_isrTimes==1000)

  {

    Adc_isrTimes = 0;

  }  

 // Clear INT flag for this timer

  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</p><p>    return;

}</p></p></p>