Unable to start FUS

A few points I would like to clarify.

Is your board a custom board and an ST board (Nucleo)?

Are you using WB FW v 1.12 or v1.13 on your board.

Why are you trying to upgrade the FUS v1.2? this version is the last and final one. It does not need to be upgraded. How do you know the FUS version on your board is the v1.2?

If your goal was to update the wireless FW, then you normally do not need to start the FUS.

Be sure the previous WB FW is deleted. Then you can do a mass erase of the user space of the flash memory. In the end launch the install command of the WB FW.

Thank you for your quick reply, Remi.

1. It is a custom board not a Nucleo
2. I am using wireless stack version 1.13 and everything worked fine with Bluetooth connection before this issue. To test my firmware upgrade feature in my application I downgraded the BLE stack to version 1.12.(0x080CA000 based on Release_Note) through cubeprogrammer. Then I flashed the BLE stack v1.13 at address 0x0809A000 (though UART) and ran the firmware upgrade sequence as follows:

• Start FUS - SHCI_C2_FUS_GetState(NULL) until FUS start
  • Delete stack - SHCI_C2_FUS_FwDelete()
  • Firmware upgrade - SHCI_C2_FUS_FwUpgrade(0,0)

I don't think the upgrade happened completely, because when I read wireless info I see wireless version as 1.12. And now I am not able to:

• Start advertisement, or connect to BLE
  • Delete firmware through CubeProgrammer
  • Start FUS through CubeProgrammer
  • Upgrade stack through CubeProgrammer

Hello,

You can find FUS and wireless stack update procedure on this wiki page:

https://wiki.st.com/stm32mcu/wiki/Connectivity:STM32WB_BLE_Hardware_Setup#FUS_and_wireless_stack_update

A dedicate wiki page about FUS is also available:

https://wiki.st.com/stm32mcu/wiki/Connectivity:STM32WB_FUS

To request CPU2 to reboot on FUS, you must send twice the GetState FUS command like this:

     SHCI_C2_FUS_GetState( NULL );

     SHCI_C2_FUS_GetState( NULL );

And if you used BLE full stack of v1.13.0 release (e.g stm32wb5x_BLE_Stack_full_fw.bin), the start address is 0x080C7000 for STM32WB5xxG board according to Release_Note.

Best Regards

Hi Remy,

I followed the same procedure listed in wiki page, I was able to connect to Bluetooth when I started my project some weeks ago.

But now I am facing a different issue. I tried doing the firmware upgrade of BLE stack through my program(code). After this I am not able to start wireless stack, or start FUS or do any BLE activity. I am suspecting my FUS is corrupted. But I am still getting a system event for FUS_FW_RUNNING so I am not sure if its corrupted.

I need your help to understand what might be the cause, and is there a way to reset the FUS to clean state to carry out the Bluetooth activities like before???

Hello,

Are you able to do something with STM32CubeProgrammer (e.g Start FUS, Upgrade FUS or Wireless Stack) ?

You can look this post to upgrade wireless stack or FUS with your program:

Can I upgrade the STM32WB wireless stack & FUS in a custom application?

Best Regards

No, I am not able to do anything.

1. Start FUS shows following error:

2. Upgrade FUS shows:

3.Upgrade wireless stack shows:

And when these errors occur, if I read FUS info after these I see the following:

Hello,

Could you take a screenshot of Security Configuration Option Bytes - 2 ?

Best Regards

Sure, following is the screenshot:

Sorry about that, here it is: