After adding bootloader to stm32, it cannot enter interrupt-EEWORLD

Collect

It can be entered before adding the bootloader, but it cannot be entered after adding it, but the main program does not crash and runs normally

It may be that the interrupt is turned off before jumping in the bootloader.

That is, it has been set in the bootloader:

__set_PRIMASK(1);

You need to add in the application layer:

__set_PRIMASK(0);

Re-enable interrupts

The program can be executed before adding the bootloader, but crashes into HardFault after adding it

Maybe this sentence was not added

SCB->VTOR = 0x08010000;

Or the C++ project does not use extern "C" to wrap the interrupt function

After adding the bootloader, the program runs randomly and JLink reports an error during debugging.

JLink News

**JLink Warning: T-bit of XPSR is 0 but should be 1. Changed to 1.

It may be due to the change of chip type, the IROM start address under Project - Option for Target - Target has been restored to 0x08000000.

Summarize

Note 3 points when adding bootloader:

1. Change SCB->VTOR

2. Change the IROM start address

3. Enable global interrupt

Keywords：stm32 bootloader interrupt Reference address：After adding bootloader to stm32, it cannot enter interrupt

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