STM32L433 IAP

[MMerc.1]

Hi,

I have 2 partitions on the STM32L433cct6 :

1. IAP (to upgrade via USB) : 0x08000000 - 0x0800C000
2. Application : 0x0800C000 - 0x08040000

I have a function to jump to the application :

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

But it doesn't work.

Do you have any ideas ?

Best regards

[Tesla DeLorean]

Use a debugger, follow​ the transfer of control.

Make sure SCB->VTOR​ gets set to the new address on the otherside.

Be aware of what interrupts are active, and what memory structures are used and there state.

Perhaps avoid reinitializing PLLs and clocks already in functional state.​

[MMerc.1]

Hi,

Thank you for your reply.

I forgot to relocate the vector table... So I uncommented the following line :

#define USER_VECT_TAB_ADDRESS

I have another problem : when I place "Start_Application" function before "HAL_Init", it works fine. But, when I put the "Start_Application" function after "HAL_Init", it doesn't work.

Do you know why ?

Best regards

[MMerc.1]

Hi,

Any ideas ?

[Mohamed Aymen HZAMI]

Hello @MMerc.1​,

Make sure to define the right offset of the vector table.

M Aymen