STM32WB5MMG - custom PCB - BLE

[DPiór.1]

Hi,

I developed PCB with STM32WB5MMGH6TR. I have code which I used previously with STM32WB55RG (on Nucleo board). I adapted it for STM32WB5MMGH6TR and it works (GPIO, SPI, I2C) except the BLE part. So I took STM's BLE_HearRate example for STM32WB5MM-DK, but it does not work as well. I mean that the STM BLE Toolbox app does not discover the STM32WB5MMGH6TR.

I don't know if the issue is with the FW/MCU configuration or is it with incorrect design of the PCB. Any hints what might be wrong? suggestions how to debug? I can share the PCB design.

[Imen.D]

Hello @DPiór.1 ,

Verify the jumper positions and solder bridges, also the power supply configuration (UM2825).

Ensure the update of the wireless stack and the FUS.

Hope the following wiki articles helped you:

• STM32WB Bluetooth® LE – wireless stack information - stm32mcu
• STM32WB Firmware Upgrade Service - stm32mcu
• STM32WB Bluetooth® LE Hardware Setup - stm32mcu

[DPiór.1]

Hi @Imen.D ,

Thank you for your answer. I will read those wiki pages.

Regarding the AN5129, it seems to be irrelevant in my case as I am using STM32WB5MMGH6TR, which has antenna integrated in the silicon.