Problem with FUS on STM32WB55CGU6

[PKlug.1]

Hello,

I have a problem updating the Wireless Stack on STM32WB55CGU6 on a custom board. The board is basically a cloned version of the P-NUCLEO-WB55-USBDONGLE. The device is connected via SWD on St-Link/V2.

FUS Version is already on v1.2 from Factory, but there is no STACK installed.

Whenever I try to install a new BLE Stack, there are two possibilities:

• Either a ‘Error: FUS_STATE_ERR_UNKNOWN’
• or everything appears to go fine, showing ‘success’.

But either way, afterwards it appears there is no STACK installed.

This is exactly the same for different Wireless Bundles and different Version Numbers.

I tried 1.13.1, 1.13.3, 1.14.0 and 1.14.1 with stm32wb5x_BLE_Stack_full_fw.bin, stm32wb5x_BLE_Stack_light_fw.bin and stm32wb5x_BLE_Stack_full_extended_fw.bin

The strange part is, that it already worked on one board, doing exactly the same thing!

But it doesn’t matter how many times I try, it doesn’t work on the other boards.

It is exactly the same thing when trying to update the STACK with the CLI Programmer.

Erasing the Chip before trying to update the Stack doesn't seem to make any difference.

The procedure seems to be right, since it already worked on one board. It also worked with different USB_Dongles.

CLI Output will be attached to this post.

Is there anything I’m missing? Any advice would be greatly appreciated.

[Remy ISSALYS]

Hello,

Can you retry with the latest version of STM32CubeProgrammer ? Can you try to install/update the wireless stack using this debug example ? You can find information about FUS and Wireless Stack update in this wiki page.

Best Regards

[PKlug.1]

Hello,

thanks for the answer.

Can you retry with the latest version of STM32CubeProgrammer ?

I upgraded from Version 2.10 to 2.11. Still the same behaviour.

Can you try to install/update the wireless stack using this debug example ?

Not really, since this is a debug example for P-NUCLEO-WB55.Nucleo and our Board has neither the same chip, nor the same SW1, SW2 and SW3 Buttons. The supplied Stack is V.1.13.3, which I already tried unsuccessfully

You can find information about FUS and Wireless Stack update in this wiki page.

This Page and the Release Notes for

STM32WB Copro Wireless Binaries have been my main Source for information.

The problem I'm having doesn't seem common.

Is there any additional Information, that I need to provide?

Best Regards

[Remy ISSALYS]

Hello,

Can you send your option bytes configuration ?

Best Regards

[PKlug.1 · Accepted solution]

Hello,

the problem turned out to be a faulty Power Supply.

Everything is working as it should be.

Thanks