Connect two STM32WB MCUs via BLE

[MohammedBou45]

Hello everyone,
I’m working on a BLE project using two STM32WB55 boards.
My goal is to create a connection between them without using the ST BLE Toolbox App.
One board is configured as a Custom Server (Peripheral), and the other as a P2P Client (Central).

I want to ensure that I am properly connected to my server and receiving notifications.
But I am not sure about how using:

Start scanning

Identify the correct server

Connect

Discover services

Enable notifications

Receive data

Please without saying follow the P2p example, because I didn't catch it

[FilipKremen]

Hello,

have you read this Wiki page?

It provides more information regarding P2P application. It's meant for WBA series, however the structure is similar to WB series.

STM32WBA Bluetooth® LE – Peer 2 Peer Applications - stm32mcu

I also recommend reading this document below.

Guidelines for Bluetooth® LE stack programming on STM32WB/STM32WBA MCUs - Programming manual

If you have any other question, please don't hesitate to ask.

Best regards,

Filip Kremen

[MohammedBou45]

My objective is to send some sensor data from an MCU to other one, so what is the best solution for me, and I didn't catch the BLE_p2pClient example, so if there is any other clear tutorial or reference to follow ? (I reached to send the data to ST Toolbox App) 

[FilipKremen]

Hello,

I recommend reading a readme file in the BLE_p2pClient example for overview.

Also, if you have a look at p2p_client_app.c file you can find there Button_Trigger_Received() function which writes to a characteristic on server side, and you can toggle LED based on this value. You can also add your own characteristic to the server for your own data. 

Section 7 in the document also provides additional information for building BLE application.

How to build wireless applications with STM32WB MCUs - Application note

Best regards,

Filip Kremen