bootload跳转到app程序以后，app程序的外部中断不能触发

发布于 2023-12-24 13:03:01 浏览：551 订阅该版

1、单片机stm32f413VGT6，通过 https://iot.rt-thread.com 制作的bootload程序，启动后跳转到自己的app程序，app程序的串口中断正常、定时器产生pwm正常，就是外部按键中断不正常，进入不了`void EXTI1_IRQHandler(void)`函数。

2、把程序bootload去掉，修改成直接app启动。
修改link.sct文件、屏蔽`ota_app_vtor_reconfig(void)`函数。
直接app启动仿真调试是可以进入EXTI1_IRQHandler(void)函数。

3、bootload跳转以后可以进入串口中断，中断向量偏移应该是正常的。
为什么不能进入app程序的外部按键中断？ 直接app启动是可以进入按键中断的。希望求助一下。

4、官网的bootload看不到源码，是不是有关外部IO中断的操作？

C1管脚基于Cube的IO的中断配置
```c
  GPIO_InitStruct.Pin = GPIO_PIN_1;
  GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);

HAL_NVIC_SetPriority(EXTI1_IRQn, 1, 1);
  HAL_NVIC_EnableIRQ(EXTI1_IRQn);
```

link.sct文件 
```c
LR_IROM1 0x08020000 0x00100000  {    ; load region size_region
  ER_IROM1 0x08020000 0x00100000  {  ; load address = execution address
   *.o (RESET, +First)
   *(InRoot$$Sections)
   .ANY (+RO)
  }
  RW_IRAM1 0x20000000 0x00050000  {  ; RW data
   .ANY (+RW +ZI)
  }
}
```
中断向量表偏移的程序
```c
#define RT_APP_PART_ADDR               0x08020000
int ota_app_vtor_reconfig(void)
{
    #define NVIC_VTOR_MASK   0x3FFFFF80
    /* Set the Vector Table base location by user application firmware definition */
    SCB->VTOR = RT_APP_PART_ADDR & NVIC_VTOR_MASK;

return 0;
}
```

fal_cfg.h
```c
#define FLASH_SIZE_GRANULARITY_16K    (4 * 16 * 1024)
#define FLASH_SIZE_GRANULARITY_64K    (64 * 1024)
#define FLASH_SIZE_GRANULARITY_128K   (7 * 128 * 1024)

#define STM32_FLASH_START_ADRESS_16K  STM32_FLASH_START_ADRESS
#define STM32_FLASH_START_ADRESS_64K  (STM32_FLASH_START_ADRESS_16K + FLASH_SIZE_GRANULARITY_16K)
#define STM32_FLASH_START_ADRESS_128K  (STM32_FLASH_START_ADRESS_64K + FLASH_SIZE_GRANULARITY_64K)

extern const struct fal_flash_dev stm32_onchip_flash_16k ;
extern const struct fal_flash_dev stm32_onchip_flash_64k ;
extern const struct fal_flash_dev stm32_onchip_flash_128k ;

/* ===================== Flash device Configuration ========================= */
/* flash device table */
#define FAL_FLASH_DEV_TABLE                                          \
{                                                                    \
    &stm32_onchip_flash_16k,                                         \
    &stm32_onchip_flash_64k,                                         \
    &stm32_onchip_flash_128k,                                        \
}
/* ====================== Partition Configuration ========================== */
#ifdef FAL_PART_HAS_TABLE_CFG
/* partition table */
#define FAL_PART_TABLE                                                               \
{                                                                                    \
    {FAL_PART_MAGIC_WORD, "app",     "onchip_flash_128k", 0         ,(256*1024), 0},     \
    {FAL_PART_MAGIC_WORD, "download","onchip_flash_128k", (256*1024), (256*1024), 0},    \
    {FAL_PART_MAGIC_WORD, "factory","onchip_flash_128k", (2*256*1024), (128*1024), 0},   \
}
```
官方bootload生成界面配置

![bootload配置界面2.jpg](https://oss-club.rt-thread.org/uploads/20231224/3da103bcec0682e79ab51711b1680071.jpg.webp)
![bootload配置1.jpg](https://oss-club.rt-thread.org/uploads/20231224/6bdddc656bf7f0bd97615905670c9e22.jpg.webp)