IAP升级--重点

typedef  void (*pFunction)(void);
pFunction Jump_To_Application;
uint32_t JumpAddress;
Boot_para_s boot_struct;

static void Jump_To_App(void )
{
    if (((*(__IO uint32_t*)APPLICATION_ADDRESS) & 0x2FFE0000 ) == 0x20000000)
    {
        JumpAddress = *(__IO uint32_t*) (APPLICATION_ADDRESS + 4);
        Jump_To_Application = (pFunction) JumpAddress;

        __set_MSP(*(__IO uint32_t*) APPLICATION_ADDRESS);
        
        LocalPrintf("Jump To App...
");
        Jump_To_Application();
    }
    LocalPrintf("not find app prj...
");
}

static void StoreSwitch(void)
{
    uint8_t res = 0,tmp_data[1024];
    uint32_t wr_size = 0,wr_addr, total_size;

    FeedWatchDog(); 
    McuFlashRead(BOOT_PARA_CONFIG_ADDR,(uint8_t*)&boot_struct.uApp_UpDataFlg,sizeof(Boot_para_s));

    if(boot_struct.uApp_UpDataFlg != VALID_VAL_DWORD_AA)
    {
        LocalPrintf("Not find updataflg
");
        goto jump_lab;
    }

    LocalPrintf("app updata size is %d bytes
", boot_struct.uApp_DataSize);
    if(boot_struct.uApp_DataSize > APPLICATION_FLASH_SIZE)
    {
        McuFlashErase(APPLICATION_UPDATE_ADDRESS,APPLICATION_FLASH_SIZE);
        BootParaInit();
        goto jump_lab;
    }

    res = McuFlashErase(APPLICATION_ADDRESS,APPLICATION_FLASH_SIZE);
    if(!res)
    {
        goto jump_lab;
    }

    IRQ_DISABLE();
    total_size = boot_struct.uApp_DataSize;
    wr_addr    = 0;
    while(total_size > 0)
    {
        FeedWatchDog();
        if(total_size >= 1024)
        {
            wr_size = 1024;
        }
        else
        {
            wr_size = total_size;
        }
        McuFlashRead(APPLICATION_UPDATE_ADDRESS+wr_addr,tmp_data,wr_size);
        res = McuFlashWrite(APPLICATION_ADDRESS+wr_addr,tmp_data,wr_size);
        if(!res)
        {
            LocalPrintf("app updata fail!
");
            break;
        }
        wr_addr    += wr_size;
        total_size -= wr_size;
        LocalPrintf("app total size is %d
", total_size);
    }
    IRQ_ENABLE();
    if(total_size == 0)
    {
        LocalPrintf("app updata OK!
");
        BootParaInit();
    }
jump_lab:    
    FeedWatchDog();
}

/* USER CODE BEGIN Private defines */
#define IRQ_DISABLE()         (__disable_irq())
#define IRQ_ENABLE()         (__enable_irq())
#define VALID_VAL_DWORD_AA      0xAAAAAAAA
#define INVALID_VAL_DWORD_55  0x55555555
/*编译宏*/
#define APP_VALID_FLG        0  //0:app1      1:app2


typedef struct
{
    uint32_t uApp_UpDataFlg;
    uint32_t uApp_DataSize;
}Boot_para_s;
/* USER CODE END Private defines */

/*--------------------------------------------------------------------------
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                                                              \_)
----------------------------------------------------------------------------*/