rt-thread系统和fsmc冲突？

不知道各位有使用过rt-thread系统么，我在调试时出现怪问题！使用STM32F429开发板（官方的那个）
不带操作系统时，移植emWin+tft屏（FSMC），运行正常（emWin的demo程序都是正常）；
移植rt-thread系统进来，发现程序一直跑飞，最后发现在配置FSMC函数上，将此函数屏蔽，rt-thread系统能正常，否则程序就跑飞！！很是郁闷!!
FSMC配置如下：
static void LCD_FMCConfig(void)
{
        FMC_NORSRAMInitTypeDef  init;
        FMC_NORSRAMTimingInitTypeDef  timingWrite;
        FMC_NORSRAMTimingInitTypeDef  timingRead;

                /* ʹÄÜFMCʱÖÓ */
        RCC_AHB3PeriphClockCmd(RCC_AHB3Periph_FMC, ENABLE);

        /*-- FMC Configuration ------------------------------------------------------*/
        /*----------------------- SRAM Bank 4 ----------------------------------------*/
        /* FMC_Bank1_NORSRAM4 configuration */
        timingWrite.FMC_AddressSetupTime = 4; //5;
        timingWrite.FMC_AddressHoldTime = 0;
        timingWrite.FMC_DataSetupTime = 5; //6;
        timingWrite.FMC_BusTurnAroundDuration = 1;
        timingWrite.FMC_CLKDivision = 0;
        timingWrite.FMC_DataLatency = 0;
        timingWrite.FMC_AccessMode = FMC_AccessMode_A;

        timingRead.FMC_AddressSetupTime =4;// 5;
        timingRead.FMC_AddressHoldTime = 0;
        timingRead.FMC_DataSetupTime =5;// 6;
        timingRead.FMC_BusTurnAroundDuration = 1;
        timingRead.FMC_CLKDivision = 0;
        timingRead.FMC_DataLatency = 0;
        timingRead.FMC_AccessMode = FMC_AccessMode_A;

        init.FMC_Bank = FMC_Bank1_NORSRAM4;
        init.FMC_DataAddressMux = FMC_DataAddressMux_Disable;
        init.FMC_MemoryType = FMC_MemoryType_SRAM;
        init.FMC_MemoryDataWidth = FMC_NORSRAM_MemoryDataWidth_16b;
        init.FMC_BurstAccessMode = FMC_BurstAccessMode_Disable;
        init.FMC_AsynchronousWait = FMC_AsynchronousWait_Disable;        
        init.FMC_WaitSignalPolarity = FMC_WaitSignalPolarity_Low;
        init.FMC_WrapMode = FMC_WrapMode_Disable;
        init.FMC_WaitSignalActive = FMC_WaitSignalActive_BeforeWaitState;
        init.FMC_WriteOperation = FMC_WriteOperation_Enable;
        init.FMC_WaitSignal = FMC_WaitSignal_Disable;
        init.FMC_ExtendedMode = FMC_ExtendedMode_Enable;
        init.FMC_WriteBurst = FMC_WriteBurst_Disable;

        init.FMC_ReadWriteTimingStruct = &timingRead;
        init.FMC_WriteTimingStruct = &timingWrite;

        FMC_NORSRAMInit(&init);

        /* - BANK 1 (of NOR/SRAM Bank 1~4) is enabled */
        FMC_NORSRAMCmd(FMC_Bank1_NORSRAM4, ENABLE);
}
理论上裸机使用此配置正确，没道理加了rt-thread就不行了，所以很郁闷！！
怀疑是否rt-thread初始化的外设和FSMC相冲突了，但屏蔽了rt-thread初始化配置的唯一外设-----串口（当然系统时钟不能屏蔽），也给屏蔽了，问题还是在！！所以彻底郁闷了
期盼大神给我指点指点！！谢谢！！