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STM32WB55 BLE stack not working

mnoro.1
Associate III

Hi,

I have a problem on my custom STM32WB board. It was working properly, but suddenly now it's BLE functions not working. The M4 core is OK, but APP_BLE_Init function return error and it fall in Error_Handler. When I checked the source of error, I reached to SHCI_C2_BLE_Init that return 0xFE. This error code is unknown.

I checked my board in STM32CubeProg. This picture shows option bytes of that:

0693W000007YzpfQAC.pngAny one can help me?

Thank you.

1 REPLY 1
ALimb.1
Associate II

This comment is probably too late. I'm replying, just in case someone else has this issue in the future.

I had the same issue after upgrading BLE stack. For my case, I had to ensure that wireless stack was running and not the FUS. Please see AN5185 (section 2.3, Wireless stack start) to see how to start wireless stack.