如何关掉28335中的一些模块的时钟

//
// InitPeripheralClocks - This function initializes the clocks to the 
// peripheral modules. First the high and low clock prescalers are set
// Second the clocks are enabled to each peripheral. To reduce power, leave 
// clocks to unused peripherals disabled
//
// Note: If a peripherals clock is not enabled then you cannot
// read or write to the registers for that peripheral
//
void 
InitPeripheralClocks(void)
{
    EALLOW;

    //
    // HISPCP/LOSPCP prescale register settings, normally it will be set to 
    // default values
    //
    SysCtrlRegs.HISPCP.all = 0x0001;
    SysCtrlRegs.LOSPCP.all = 0x0002;

    //
    // XCLKOUT to SYSCLKOUT ratio.  By default XCLKOUT = 1/4 SYSCLKOUT
    // XTIMCLK = SYSCLKOUT/2
    //
    XintfRegs.XINTCNF2.bit.XTIMCLK = 1;
    
    //
    // XCLKOUT = XTIMCLK/2
    //
    XintfRegs.XINTCNF2.bit.CLKMODE = 1;
    
    //
    // Enable XCLKOUT
    //
    XintfRegs.XINTCNF2.bit.CLKOFF = 0;

    //
    // Peripheral clock enables set for the selected peripherals.
    // If you are not using a peripheral leave the clock off
    // to save on power.
    //
    // Note: not all peripherals are available on all 2833x derivates.
    // Refer to the datasheet for your particular device.
    //
    // This function is not written to be an example of efficient code.
    //
    SysCtrlRegs.PCLKCR0.bit.ADCENCLK = 1;    // ADC

    //
    //                          *IMPORTANT*
    // The ADC_cal function, which  copies the ADC calibration values from TI 
    // reserved OTP into the ADCREFSEL and ADCOFFTRIM registers, occurs 
    // automatically in the Boot ROM. If the boot ROM code is bypassed during 
    // the debug process, the following function MUST be called for the ADC to 
    // function according to specification. The clocks to the ADC MUST be 
    // enabled before calling this function.
    // See the device data manual and/or the ADC Reference
    // Manual for more information.
    //
    ADC_cal();

    SysCtrlRegs.PCLKCR0.bit.I2CAENCLK = 1;   // I2C
    SysCtrlRegs.PCLKCR0.bit.SCIAENCLK = 1;   // SCI-A
    SysCtrlRegs.PCLKCR0.bit.SCIBENCLK = 1;   // SCI-B
    SysCtrlRegs.PCLKCR0.bit.SCICENCLK = 1;   // SCI-C
    SysCtrlRegs.PCLKCR0.bit.SPIAENCLK = 1;   // SPI-A
    SysCtrlRegs.PCLKCR0.bit.MCBSPAENCLK = 1; // McBSP-A
    SysCtrlRegs.PCLKCR0.bit.MCBSPBENCLK = 1; // McBSP-B
    SysCtrlRegs.PCLKCR0.bit.ECANAENCLK=1;    // eCAN-A
    SysCtrlRegs.PCLKCR0.bit.ECANBENCLK=1;    // eCAN-B

    SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 0;   // Disable TBCLK within the ePWM
    SysCtrlRegs.PCLKCR1.bit.EPWM1ENCLK = 1;  // ePWM1
    SysCtrlRegs.PCLKCR1.bit.EPWM2ENCLK = 1;  // ePWM2
    SysCtrlRegs.PCLKCR1.bit.EPWM3ENCLK = 1;  // ePWM3
    SysCtrlRegs.PCLKCR1.bit.EPWM4ENCLK = 1;  // ePWM4
    SysCtrlRegs.PCLKCR1.bit.EPWM5ENCLK = 1;  // ePWM5
    SysCtrlRegs.PCLKCR1.bit.EPWM6ENCLK = 1;  // ePWM6
    SysCtrlRegs.PCLKCR0.bit.TBCLKSYNC = 1;   // Enable TBCLK within the ePWM

    SysCtrlRegs.PCLKCR1.bit.ECAP3ENCLK = 1;  // eCAP3
    SysCtrlRegs.PCLKCR1.bit.ECAP4ENCLK = 1;  // eCAP4
    SysCtrlRegs.PCLKCR1.bit.ECAP5ENCLK = 1;  // eCAP5
    SysCtrlRegs.PCLKCR1.bit.ECAP6ENCLK = 1;  // eCAP6
    SysCtrlRegs.PCLKCR1.bit.ECAP1ENCLK = 1;  // eCAP1
    SysCtrlRegs.PCLKCR1.bit.ECAP2ENCLK = 1;  // eCAP2
    SysCtrlRegs.PCLKCR1.bit.EQEP1ENCLK = 1;  // eQEP1
    SysCtrlRegs.PCLKCR1.bit.EQEP2ENCLK = 1;  // eQEP2

    SysCtrlRegs.PCLKCR3.bit.CPUTIMER0ENCLK = 1; // CPU Timer 0
    SysCtrlRegs.PCLKCR3.bit.CPUTIMER1ENCLK = 1; // CPU Timer 1
    SysCtrlRegs.PCLKCR3.bit.CPUTIMER2ENCLK = 1; // CPU Timer 2

    SysCtrlRegs.PCLKCR3.bit.DMAENCLK = 1;       // DMA Clock
    SysCtrlRegs.PCLKCR3.bit.XINTFENCLK = 1;     // XTIMCLK
    SysCtrlRegs.PCLKCR3.bit.GPIOINENCLK = 1;    // GPIO input clock

    EDIS;
}

很高兴能帮到您！

您好，请问，您怎样配置低功耗的，我现在也在配置，老不成功