关于ccs软件使用的问题

void InitSetAdc(void) //库里面的函数（部分）
{
// Interrupts that are used in this example are re-mapped to
// ISR functions found within this file.
   EALLOW;  // This is needed to write to EALLOW protected register
   PieVectTable.ADCINT1 = &adc_isr;
   EDIS;    // This is needed to disable write to EALLOW protected registers

// Step 4. Initialize all the Device Peripherals:
   InitAdc();  // For this example, init the ADC
   AdcOffsetSelfCal();

// Step 5. User specific code, enable interrupts:

// Enable ADCINT1 in PIE
   PieCtrlRegs.PIEIER1.bit.INTx1 = 1;    // Enable INT 1.1 in the PIE
   IER |= M_INT1;                         // Enable CPU Interrupt 1
   EINT;                                  // Enable Global interrupt INTM
   ERTM;                                  // Enable Global realtime interrupt DBGM

// Configure ADC
// Note: Channel ADCINA4  will be double sampled to workaround the ADC 1st sample issue for rev0 silicon errata

   EALLOW;
   AdcRegs.ADCCTL1.bit.INTPULSEPOS    = 1;    //ADCINT1 trips after AdcResults latch
   AdcRegs.INTSEL1N2.bit.INT1E      = 1;    //Enabled ADCINT1
   AdcRegs.INTSEL1N2.bit.INT1CONT   = 0;    //Disable ADCINT1 Continuous mode
   AdcRegs.INTSEL1N2.bit.INT1SEL    = 2;    //setup EOC2 to trigger ADCINT1 to fire
   AdcRegs.ADCSOC0CTL.bit.CHSEL     = 4;    //set SOC0 channel select to ADCINA4(dummy sample for rev0 errata workaround)
   AdcRegs.ADCSOC1CTL.bit.CHSEL     = 4;    //set SOC1 channel select to ADCINA4
   AdcRegs.ADCSOC2CTL.bit.CHSEL     = 2;    //set SOC2 channel select to ADCINA2
   AdcRegs.ADCSOC0CTL.bit.TRIGSEL     = 5;    //set SOC0 start trigger on EPWM1A, due to round-robin SOC0 converts first then SOC1, then SOC2
   AdcRegs.ADCSOC1CTL.bit.TRIGSEL     = 5;    //set SOC1 start trigger on EPWM1A, due to round-robin SOC0 converts first then SOC1, then SOC2
   AdcRegs.ADCSOC2CTL.bit.TRIGSEL     = 5;    //set SOC2 start trigger on EPWM1A, due to round-robin SOC0 converts first then SOC1, then SOC2
   AdcRegs.ADCSOC0CTL.bit.ACQPS     = 6;    //set SOC0 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
   AdcRegs.ADCSOC1CTL.bit.ACQPS     = 6;    //set SOC1 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
   AdcRegs.ADCSOC2CTL.bit.ACQPS     = 6;    //set SOC2 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
   EDIS;

// Assumes ePWM1 clock is already enabled in InitSysCtrl();
   EPwm1Regs.ETSEL.bit.SOCAEN    = 1;        // Enable SOC on A group
   EPwm1Regs.ETSEL.bit.SOCASEL    = 4;        // Select SOC from from CPMA on upcount
   EPwm1Regs.ETPS.bit.SOCAPRD     = 1;        // Generate pulse on 1st event
   EPwm1Regs.CMPA.half.CMPA     = 0x0080;    // Set compare A value
   EPwm1Regs.TBPRD                 = 0xFFFF;    // Set period for ePWM1
   EPwm1Regs.TBCTL.bit.CTRMODE     = 0;        // count up and start
}
void InitSetAdc(void)//修改过的函数
{
//     Interrupts that are used in this example are re-mapped to
//     ISR functions found within this file.
    EALLOW;  // This is needed to write to EALLOW protected register
    PieVectTable.ADCINT1 = &adc_isr;
    EDIS;    // This is needed to disable write to EALLOW protected registers

//     Step 4. Initialize all the Device Peripherals:
    InitAdc();  // For this example, init the ADC
    AdcOffsetSelfCal();

//     Step 5. User specific code, enable interrupts:

//     Enable ADCINT1 in PIE
    PieCtrlRegs.PIEIER1.bit.INTx1 = 1;    // Enable INT 1.1 in the PIE
    IER |= M_INT1;                         // Enable CPU Interrupt 1
    EINT;                                  // Enable Global interrupt INTM
    ERTM;                                  // Enable Global realtime interrupt DBGM

    EALLOW;
    AdcRegs.ADCCTL1.bit.INTPULSEPOS    = 1;    //ADCINT1 trips after AdcResults latch
    AdcRegs.INTSEL1N2.bit.INT1E      = 1;    //Enabled ADCINT1
    AdcRegs.INTSEL1N2.bit.INT1CONT   = 0;    //Disable ADCINT1 Continuous mode
    AdcRegs.INTSEL1N2.bit.INT1SEL    = 2;    //setup EOC2 to trigger ADCINT1 to fire
    AdcRegs.ADCSOC0CTL.bit.CHSEL     = 4;    //set SOC0 channel select to ADCINA4(dummy sample for rev0 errata workaround)
    AdcRegs.ADCSOC1CTL.bit.CHSEL     = 4;    //set SOC1 channel select to ADCINA4
    AdcRegs.ADCSOC2CTL.bit.CHSEL     = 2;    //set SOC2 channel select to ADCINA2
    AdcRegs.ADCSOC0CTL.bit.TRIGSEL     = 5;    //set SOC0 start trigger on EPWM1A, due to round-robin SOC0 converts first then SOC1, then SOC2
    AdcRegs.ADCSOC1CTL.bit.TRIGSEL     = 5;    //set SOC1 start trigger on EPWM1A, due to round-robin SOC0 converts first then SOC1, then SOC2
    AdcRegs.ADCSOC2CTL.bit.TRIGSEL     = 5;    //set SOC2 start trigger on EPWM1A, due to round-robin SOC0 converts first then SOC1, then SOC2
    AdcRegs.ADCSOC0CTL.bit.ACQPS     = 6;    //set SOC0 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
    AdcRegs.ADCSOC1CTL.bit.ACQPS     = 6;    //set SOC1 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
    AdcRegs.ADCSOC2CTL.bit.ACQPS     = 6;    //set SOC2 S/H Window to 7 ADC Clock Cycles, (6 ACQPS plus 1)
    EDIS;
    /*
    InitCpuTimers();   // For this example, only initialize the Cpu Timers
 // Configure CPU-Timer 0 to interrupt every 500 milliseconds:
 // 60MHz CPU Freq, 50 millisecond Period (in uSeconds)
    ConfigCpuTimer(&CpuTimer0, 20, 500);
    CpuTimer0Regs.TCR.all = 0x4001; // Use write-only instruction
                                    // to set TSS bit = 0
                                     *
                                     */
// Assumes ePWM1 clock is already enabled in InitSysCtrl();
   EPwm1Regs.ETSEL.bit.SOCAEN    = 1;        // Enable SOC on A group
   EPwm1Regs.ETSEL.bit.SOCASEL    = 4;        // Select SOC from from CPMA on upcount
   EPwm1Regs.ETPS.bit.SOCAPRD     = 1;        // Generate pulse on 1st event
   EPwm1Regs.CMPA.half.CMPA     = 0x0080;    // Set compare A value
   EPwm1Regs.TBPRD                 = 0xFFFF;    // Set period for ePWM1
}

你确定一模一样？

上面的程序最后一句 EPwm1Regs.TBCTL.bit.CTRMODE     = 0;        // count up and start

是来启动PWM的，下面的程序遗失了这句，PWM没启动。