establish BLE communication without connection

[mrabti]

Comment établir une communication BLE sans connexion et transférer des données entre deux STM32L41A, en configurant l'un comme diffuseur (producteur) et l'autre comme observateur (récepteur) ? Quelles sont les étapes et les configurations nécessaires pour assurer une transmission efficace des données du diffuseur à l'observateur ?

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Google Translate:

How to establish connectionless BLE communication and transfer data between two STM32L41A devices, configuring one as a broadcaster (producer) and the other as an observer (receiver)? What are the steps and configurations required to ensure efficient data transmission from the broadcaster to the observer?

[Pavel A.]

BLE Extended advertising feature allows the payload size up to 1650 bytes. Looks good?

[mrabti]

Yes, that works for me! I want to establish a BLE communication without connection between two STM32L41A, configuring one as a broadcaster (producer) and the other as an observer (receiver). My goal is to ensure efficient data transmission using extended advertising. What are the necessary steps and configurations to achieve this?

[Pavel A.]

STM32L4 does not have internal BLE controller. You may be interested in wireless STM32 series with BLE. Otherwise, select some external BLE module. This will be your first step.

[mrabti]

https://www.st.com/en/evaluation-tools/b-l475e-iot01a.html

[Andrew Neil]

So that's using an external BLE module - the SPBTLE-RF:

https://www.st.com/content/ccc/resource/technical/document/datasheet/group3/ef/41/c3/5c/13/04/48/d6/DM00381960/files/DM00381960.pdf/jcr:content/translations/en.DM00381960.pdf

https://community.st.com/t5/interface-and-connectivity-ics/getting-started-with-spbtle-rf/td-p/277797

https://www.st.com/en/ecosystems/x-nucleo-idb05a1.html

[Andrew Neil]

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@Pavel A. wrote:

 You may be interested in wireless STM32 series with BLE.

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@mrabti - ie, the STM32WB series.

See: https://www.st.com/en/microcontrollers-microprocessors/stm32wb-series.html