How to enable both BLE and USB (DFU mode) in STM32WB5MMG using STMCubeIDE?

[Anandbalu]

We made a custom PCB board using STM32WB5MMG. We tried connecting BLE and USB (DFU mode) together using STMCubeIDE, but if we enable BLE USB is not working. But without both are working well independently. We are new to this controller. So we didn't know how to enable both.

[Sarra.S]

Hello @Anandbalu​ 

Take a look at these two documents :

1. BLE security with STM32WB MOOC
2. USB hardware and PCB guidelines using STM32 MCUs

Hope that helps!

[Anandbalu · Accepted solution]

Hello @Sarra.S​ 

Thank you for your reply,

Now both are working. We enable both in .ioc and resolve the clock as per IDE's suggestion. and we add the below couple of lines in the "PeriphCommonClock_Config(void)" function

LL_HSEM_1StepLock( HSEM, 5 );

LL_RCC_HSI48_Enable();

Thanks,

Ananthakumar