RT-Thread-新唐M487 IAP跳跳转RTT应用失败，进入hard faultRT-Thread问答社区

新唐M487 IAP跳跳转RTT应用失败，进入hard fault

发布于 2023-09-07 17:56:47 浏览：536 订阅该版

使用新唐M487做ota,boot(非rtt代码)跳转rtt应用失败，进入hardfault.使用非rtt程序跳转是没问题的。请大神帮忙看看问题出哪了。

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230907/19cc80e594a38cd3ecce562b6034ea88.png)
使用的是APRPM含IAP的配置

```c
int main()
{
    upgradeTypedef upgradeParam;

SYS_Init();                     /* Init System, IP clock and multi-function I/O */
    UART0_Init();                   /* Initialize UART0 */
    
    /* Configure SPI_FLASH_PORT as a master, MSB first, 8-bit transaction, SPI Mode-0 timing, clock is 20MHz */
    SPI_Open(SPI_FLASH_PORT, SPI_MASTER, SPI_MODE_0, 8, 20000000);

/* Disable auto SS function, control SS signal manually. */
    SPI_DisableAutoSS(SPI_FLASH_PORT);
    
    SYS_UnlockReg();                   /* Unlock register lock protect */
    FMC_Open();                        /* Enable FMC ISP function */

//    printf("w25q16 ID:%04x\n", SpiFlash_ReadMidDid());
    
    upgradeParam = get_upgrade_mark();
    if(upgradeParam.mark == 0x01)                   //升级文件已经下载
    {	
        if(0 != copy_new_firmware(upgradeParam))    //拷贝失败，回退
        {
            restore_factory_settings();
        }
    }

iap_load_app(APP_1_ADDR);

while(1){}
}
```
跳转程序如下：

```c
#define APP_1_ADDR                  0x00003000
void iap_load_app(__IO uint32_t appAddr)
{  
    int i;
    if (((*(__IO uint32_t*)appAddr) & 0x2FFC0000 ) == 0x20000000)
    {
        FMC_Close();                       /* Disable FMC ISP function */
        SYS_LockReg();  
        
        printf("Jump to application running ... \n");
        
        JumpAddress = *(__IO uint32_t*) (appAddr + 4);
        Jump_To_Application = (pFunc) JumpAddress;
		
        __disable_irq();        
        
        SysTick->CTRL = 0;
        SysTick->LOAD = 0;
        SysTick->VAL = 0;

for( i=0;i<8;i++)
		{
            NVIC->ICER[i] = 0xFFFFFFFF; 
            NVIC->ICPR[i] = 0xFFFFFFFF; 
		}
         
        __set_MSP(*(__IO uint32_t*) appAddr);
        __set_CONTROL(0);
        __ISB();
	
        Jump_To_Application();//执行函数跳转
        
        printf("Qboot jump to application fail.\n");
    }
    else
        printf("No legitimate application.\n");
    
}
```
APP代码中，linker和utilites配置如下：

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230907/98d20c13ee61d72573fb2c0f7672c42a.png)

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230907/9ed43c0422fa14b24787a1b125cb3744.png)

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230907/734464a34883ed6d38316a01d0bc8d7e.png)

boot代码配置的keil配置和ICP配置如下：

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230907/e83be32eb3f1756a23b5919f02a892bb.png)

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230907/ec7a8f98de6edba0b506a97eaea231a4.png)

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230907/b4292369a04a3ef40ee9996129c45b89.png)

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230907/43b0ba9f1b4af9d4b28562d8ce14a601.png)

改的简单的非rtt点灯程序就可以正常跳转

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230907/6211737ed690eafb92f6992a9ef7dabe.png)

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