调试IAP程序时跳转时出现问题求指教

dongfangyunxia · 发表于 2013-10-12 12:02:35

void JumpAppProgram(z_u32 u32ApplicationAddress)
{
s_u32ApplicationAdress = (*(__IO uint32_t*)u32ApplicationAddress);
s_u32xxxxxx = u32ApplicationAddress;

    /* Test if user code is programmed starting from address "u32ApplicationAddress" */
    if (((*(__IO uint32_t*)u32ApplicationAddress) & 0x2FFE0000 ) == 0x20000000)
    {
        typedef void (*pFunction)(void);
        z_u32 JumpAddress = 0x00000000;

pFunction Jump_To_Application;

DebugPrint("\r\n [Jump App Main Function!] \r\n");

        /* Jump to user application */
        JumpAddress = *(__IO uint32_t*) (u32ApplicationAddress + 4);    //把复位地址赋值给JumpAddress
        Jump_To_Application = (pFunction) JumpAddress;    //初始化用户程序的堆栈指针

        /* Initialize user application's Stack Pointer */
        __set_PSP(*(__IO uint32_t*) u32ApplicationAddress);
        __set_CONTROL(0);    //选择主堆栈指针MSP
        __set_MSP(*(__IO uint32_t*) u32ApplicationAddress);    //STM32 跳转，将主堆栈指针指向用户区域,堆栈
        Jump_To_Application();     // 赋给PC指针
    }
    else
    {
        DebugPrint("\r\n [Jump App Program Fail!] \r\n");
    }
}

传入的地址为0x08020800
s_u32ApplicationAdress = (*(__IO uint32_t*)u32ApplicationAddress);
s_u32xxxxxx = u32ApplicationAddress;

查看到的u32ApplicationAdress 为0xFFFFFFFF
求解释