我正在编写 Bootloader，参考了论坛大量帖子完成跳转代码。 如果注释掉固件升级函数PerformFirmwareUpdate()，跳转运行完全正常。 typedef void (*pFunction)(void); pFunction appEntry;

uint32_t appStack;

HAL_Init();

/ Get the application stack pointer (First entry in the application vector table) /

appStack = (uint32_t) ((__IO uint32_t)EXEC_ZONE_ADDR);

/ Get the application entry point (Second entry in the application vector table) /

appEntry = (pFunction) (__IO uint32_t) (EXEC_ZONE_ADDR);// + 4);

if (CheckFirmwareUpdate)

//PerformFirmwareUpdate();

HAL_DeInit();

/ Reconfigure vector table offset register to match the application location /

SCB->VTOR = EXEC_ZONE_ADDR;

/ Set the application stack pointer /

__disable_irq();

__set_MSP(appStack);

__DSB();

/ Start the application /

appEntry();

when i uncomment the function which copies the program in the execution sector (5), then i get the problem:

the appEntry gets the value of sector 6 instead of sector 5 which is the real value assigned.

void PerformFirmwareUpdate(void)

{ if (FlashErase(FLASH_SECTOR_5))//(FLASH_SECTOR_5); { uint32_t data_ptr = (uint32_t )PROG_ZONE_ADDR; HAL_FLASH_Unlock(); for(uint32_t i = 0; i < (SECTOR_SIZE); i += sizeof(uint32_t), data_ptr++ ) { if(HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, EXEC_ZONE_ADDR + i, *data_ptr) != HAL_OK) { //WORD = 32bits break; } FLASH_WaitForLastOperation (4000); //in ms, max time to erase whole sector; see datasheet } HAL_FLASH_Lock(); } return; }

这个型号的升级代码，在库里面都有现成的呀。

现在的小伙伴们都参照甚至直接用的。

经典型号哦，都用了十多年了。

如果注释掉PerformFirmwareUpdate可以正常运行，说明PerformFirmwareUpdate的代码 有问题。在操作FLASH前，需要先解锁FLASH，建议参考FLASH的完整操作DEMO进行修改。