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in application programming does not jump to user app

max klo

Hi there,

I tried to execute the IAP code (AN3965) on a f4 discovery board. I can say that the loader reads an writes binarys perfectly, it was testet with flash loader demonstrator.
But jumping to user app does not work. I tried the following pieces of code, I get everytimes a hard fault at the command 'Jump_To_Application();'

What is wrong?

code one:

/* Jump to user application */
JumpAddress = *(__IO uint32_t*) (APPLICATION_ADDRESS + 4);
Jump_To_Application = (pFunction) JumpAddress;
/* Initialize user application's Stack Pointer */
__set_MSP(*(__IO uint32_t*) APPLICATION_ADDRESS);
Jump_To_Application();

code two:

volatile uint32_t JumpAddress;
void (*Jump_To_Application)(void) = 0;
JumpAddress = *(__IO uint32_t*) (APPLICATION_ADDRESS + 4);
/* Jump to user application */
Jump_To_Application = (void (*)(void)) JumpAddress;
/* Initialize user application's Stack Pointer */
__set_MSP(*(__IO uint32_t*) APPLICATION_ADDRESS);
Jump_To_Application();

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