TM4C123GH6PM控制MPU9150，调试工具为CCS8.3.0，mpu9150.c 文件中无法增加断点

        用TM4C123GH6PM对MPU9150进行控制和数据读取，用官方给的例程和sensorlib库，所用软件为CCS 8.3.0 。程序运行正常，数据读取正常，数据输出结果正常。

        但在mpu9150.c文件中增加断点都是无效的。具体程序分两个部分贴出：

一、main.c中部分程序，对MPU9150进行设置

void
MPU9150CFG(void)
{
    // Initialize the MPU9150 Driver.
    MPU9150Init(&g_sMPU9150Inst, &g_sI2CInst, MPU9150_I2C_ADDRESS, I2C3Callback, &g_sMPU9150Inst);
    I2C3Wait(__FILE__, __LINE__);

    // Write application specifice sensor configuration such as filter settings
    // and sensor range settings.

    g_sMPU9150Inst.pui8Data[0] = MPU9150_CONFIG_DLPF_CFG_94_98;
    g_sMPU9150Inst.pui8Data[1] = MPU9150_GYRO_CONFIG_FS_SEL_250;
    g_sMPU9150Inst.pui8Data[2] = (MPU9150_ACCEL_CONFIG_ACCEL_HPF_5HZ | MPU9150_ACCEL_CONFIG_AFS_SEL_2G);

    MPU9150Write(&g_sMPU9150Inst, MPU9150_O_CONFIG, g_sMPU9150Inst.pui8Data, 3, I2C3Callback, &g_sMPU9150Inst);

    I2C3Wait(__FILE__, __LINE__);

    // Configure the data ready interrupt pin output of the MPU9150.

    g_sMPU9150Inst.pui8Data[0] = MPU9150_INT_PIN_CFG_INT_LEVEL | MPU9150_INT_PIN_CFG_INT_RD_CLEAR | MPU9150_INT_PIN_CFG_LATCH_INT_EN;
    g_sMPU9150Inst.pui8Data[1] = MPU9150_INT_ENABLE_DATA_RDY_EN;

    MPU9150Write(&g_sMPU9150Inst, MPU9150_O_INT_PIN_CFG, g_sMPU9150Inst.pui8Data, 2, I2C3Callback, &g_sMPU9150Inst);

    // Wait for transaction to complete
    I2C3Wait(__FILE__, __LINE__);
    // Initialize the DCM system. 50 hz sample rate.
    // accel weight = .2, gyro weight = .8, mag weight = .2
}


二、mpu9150.c中部分程序，主要对MPU9150进行初始化，MPU9150的初始化函数为 MPU9150Init()

//*****************************************************************************
//
//! Initializes the MPU9150 driver.
//!
//! \param psInst is a pointer to the MPU9150 instance data.
//! \param psI2CInst is a pointer to the I2C master driver instance data.
//! \param ui8I2CAddr is the I2C address of the MPU9150 device.
//! \param pfnCallback is the function to be called when the initialization has
//! completed (can be \b NULL if a callback is not required).
//! \param pvCallbackData is a pointer that is passed to the callback function.
//!
//! This function initializes the MPU9150 driver, preparing it for operation.
//!
//! \return Returns 1 if the MPU9150 driver was successfully initialized and 0
//! if it was not.
//
//*****************************************************************************
uint_fast8_t
MPU9150Init(tMPU9150 *psInst, tI2CMInstance *psI2CInst,
            uint_fast8_t ui8I2CAddr, tSensorCallback *pfnCallback,
            void *pvCallbackData)
{
    //
    // Initialize the MPU9150 instance structure.
    //
    psInst->psI2CInst = psI2CInst;
    psInst->ui8Addr = ui8I2CAddr;

    //
    // Save the callback information.
    //
    psInst->pfnCallback = pfnCallback;
    psInst->pvCallbackData = pvCallbackData;

    //
    // Default range setting is +/- 2 g
    //
    psInst->ui8AccelAfsSel = (MPU9150_ACCEL_CONFIG_AFS_SEL_2G >>
                              MPU9150_ACCEL_CONFIG_AFS_SEL_S);
    psInst->ui8NewAccelAfsSel = (MPU9150_ACCEL_CONFIG_AFS_SEL_2G >>
                                 MPU9150_ACCEL_CONFIG_AFS_SEL_S);

    //
    // Default range setting is +/- 250 degrees/s
    //
    psInst->ui8GyroFsSel = (MPU9150_GYRO_CONFIG_FS_SEL_250 >>
                            MPU9150_GYRO_CONFIG_FS_SEL_S);
    psInst->ui8NewGyroFsSel = (MPU9150_GYRO_CONFIG_FS_SEL_250 >>
                               MPU9150_GYRO_CONFIG_FS_SEL_S);

    //
    // Set the state to show we are initiating a reset.
    //
    psInst->ui8State = MPU9150_STATE_INIT_RESET;

    //
    // Load the buffer with command to perform device reset
    //
    psInst->uCommand.pui8Buffer[0] = MPU9150_O_PWR_MGMT_1;
    psInst->uCommand.pui8Buffer[1] = MPU9150_PWR_MGMT_1_DEVICE_RESET;
    if(I2CMWrite(psInst->psI2CInst, psInst->ui8Addr,
                 psInst->uCommand.pui8Buffer, 2, MPU9150Callback, psInst) == 0)
    {
        psInst->ui8State = MPU9150_STATE_IDLE;
        return(0);
    }

    //
    // Success
    //
    return(1);
}

        程序在进入MPU9150CFG函数，首先对MPU9150进行初始化，因此程序会跳入mpu9150.c 文件中执行 MPU9150Init()。但我在 MPU9150Init()中设置断点的时候，断点都是无效的，断点显示为灰色，且有感叹号，并且会出现以下字符：“[ S/W  BP -  disabled ]”     请问这是为什么，这问题已经卡了一周了，请帮帮我。