F28027在CCS中的ADC模块的程序改不了寄存器的值！为什么呢？

F28027在CCS中的ADC模块的程序在调试时改不了寄存器的值，这是为什么呢？？应该已经使能ADC模块了的。

附源程序：

#include "DSP28x_Project.h"   

interrupt void tim0_isr(void);

interrupt void ADC_convered(void);

Uint16 ADCINA0_Voltage_sum = 0;

Uint16 ADCINA1_Voltage_sum = 0;

Uint16 ADCINA2_Voltage_sum = 0;

Uint16 ADCINA0_Voltage = 0;

Uint16 ADCINA1_Voltage = 0;

Uint16 ADCINA2_Voltage = 0;

char convered_count = 0;

void main(void)

{

  InitSysCtrl();

   InitGpio();

  DINT;

  InitPieCtrl();

IER = 0x0000;    IFR = 0x0000;

InitPieVectTable();

    InitAdc();

    EALLOW;

    AdcRegs.ADCSAMPLEMODE.bit.SIMULEN0 = 0; //SOC0、SOC1单一采样   

AdcRegs.ADCSAMPLEMODE.bit.SIMULEN2 = 0; //SOC2、SOC3单一采样   

AdcRegs.ADCSOC0CTL.bit.CHSEL=0;   //SOC通道选择      

AdcRegs.ADCSOC1CTL.bit.CHSEL=1;      

AdcRegs.ADCSOC2CTL.bit.CHSEL=2;      

AdcRegs.ADCSOC0CTL.bit.ACQPS = 6;  //采样时间      

AdcRegs.ADCSOC1CTL.bit.ACQPS = 6;      

AdcRegs.ADCSOC2CTL.bit.ACQPS = 6;      

AdcRegs.ADCSOC0CTL.bit.TRIGSEL = 1;  //soc触发选择,TIM0   

AdcRegs.ADCCTL1.bit.INTPULSEPOS  = 1;   //结果存入寄存器才产生中断

    PieVectTable.ADCINT1 = &ADC_convered;   

AdcRegs.INTSEL1N2.bit.INT1SEL = 2;    //中断线1选择soc2   

AdcRegs.INTSEL1N2.bit.INT1CONT  = 0;   

AdcRegs.INTSEL1N2.bit.INT1E  = 1;    //中断使能

    PieCtrlRegs.PIEIER1.bit.INTx1 = 1;   //使能int1.1     EDIS;

/****************设置定时器，用以触发ADC*****************/   

CpuTimer0Regs.TPR.bit.TDDR = 59;   

CpuTimer0Regs.TPRH.bit.TDDRH = 0; //对输入时钟60分频，60M/60=1M   

CpuTimer0Regs.PRD.all = 500000;//定时0.5s   

CpuTimer0Regs.TCR.bit.TRB = 1; //reload   

CpuTimer0Regs.TCR.bit.TIE = 1; //使能中断   

CpuTimer0Regs.TCR.bit.TSS = 0; //开始计数

    EALLOW;     PieVectTable.TINT0 = &tim0_isr;   

PieCtrlRegs.PIECTRL.bit.ENPIE = 1;   //使能PIE   

PieCtrlRegs.PIEIER1.bit.INTx7 = 1;   //使能int1.7   

IER |= 0x0001;//使能GROUP1   

EINT;   

EDIS;

  }

interrupt void ADC_convered(void)

{      //LED_toggle(LED2);     

ADCINA0_Voltage_sum += AdcResult.ADCRESULT0;     

ADCINA1_Voltage_sum += AdcResult.ADCRESULT1;     

ADCINA2_Voltage_sum += AdcResult.ADCRESULT2;     

AdcRegs.ADCINTFLGCLR.bit.ADCINT1 = 1;     

PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;     

convered_count++;     

/*********转换16次，取平均值*********/     

if(convered_count > 15)     

{          ADCINA0_Voltage = ADCINA0_Voltage_sum >> 4;//相当于除以16         

            ADCINA1_Voltage = ADCINA1_Voltage_sum >> 4;         

           ADCINA2_Voltage = ADCINA2_Voltage_sum >> 4;         

           ADCINA0_Voltage_sum = 0;         

           ADCINA1_Voltage_sum = 0;         

          ADCINA2_Voltage_sum = 0;         

            convered_count = 0;      }  

}

  interrupt void tim0_isr(void)

{     PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;  }

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// No more.

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