IAP Jump to application not working

[TaronKim]

Hi, I have some problem about IAP.

It's not working application after jump from custom boot.

- MCU : Stm32F446RC

- Board : Custom board

- Boot address : 0x08000000 ~ 0x0801FFFF (128k)

- Application address : 0x08020000 (384k)

- Custom Boot Flash.ld

- Application Flash.ld

- Application system_stm32f4xx.c

- Jump to App code

I got the problem here

- HAL_Init() -> HAL_InitTick(TICK_INT_PRIORITY) -> HAL_NVIC_EnableIRQ(TIM8_TRG_COM_TIM14_IRQn) in stm32f4xx_hal_timebase_tim.c

Anyone have some solution?

Please answer me.

Thanks.

[Imen.D]

Hello @TaronKim 

What is the value of Application Start address?

I advise you refer to this article: How to jump to system bootloader from application ... - STMicroelectronics Community

[Tesla DeLorean]

>>Anyone have some solution? Please answer me.

Use the Debugger, and step over the code.

Make sure that the vector table has viable content, and not filled with 0xFFFFFFFF

Failure suggests you're jumping anyway, or you reactivate an interrupt and it vectors there. Perhaps validate entire image say with signing or CRC.

Be a bit more circumspect before changing the SCB->VTOR and handing off control. Instrument your code so it's more apparent what's happening and why.

[MM..1]

Your config cant work . You set RAM vectors with offset to non existed RAM area...

[TaronKim]

-it's custom bootloader address

-it's application address 

i got the problem after Jump from boot to application.

bootloader firmware is working well

[TaronKim]

I thought RC have 256k bytes memory, so it makes problem.

So i changed RC to RE. Re have 512k bytes memory.

But it's same problem..

[MM..1 · Accepted solution]

Ahh you dont read i write RAM and this is 128k only. Then vector offset cant be 0x20000.

Comment out this and all works

//#define VECT_TAB_SRAM

[Tesla DeLorean]

>>But it's same problem..

Define the "problem" better

Show that SCB->VTOR = 0x08020000

Show what's happening as you step into the application

Show the point of failure, with registers and disassembly

Instrument so you can dump peripheral and cpu registers

If failing interrupts, show NVIC, show Vectors

[TaronKim]

Omg.. thanks a lot.

it's working now..

why i did..