ESL PAwR

[lucac]

Hi,

I'm working on a ESL project using STM32WB09.

In order to reach greater distances, is it possible to use the CODED PHY ?

Thank you

[Imen.D]

Hello @lucac ,

You can use the Coded PHY on the STM32WB09 to increase range and reach greater distances in your ESL project. The device supports both S=2 and S=8 coding schemes, enabling up to four times the range of standard Bluetooth® LE.

You can refer to the PM0274: Bluetooth® Low Energy stack v4.x programming guidelines, for more details about Coded PHY.

[lucac]

Ok, thanks.

Is there any example of use of CODED PHY in a ESL project ?

It is possible to think of combining PAwR and MESH using STM32WB09 with the aim of having no distances limits ?

Thank you.

[Imen.D]

Hi @lucac ,

I find these resources for you that can be used as start point of working:

• Bluetooth® LE PAwR-ESL features and applications
• STM32WB09 PAwR/ESL application demonstrates the PAwR (Periodic Advertising with Response) feature of STM32WB0 Bluetooth stack: GitHub - stm32-hotspot/STM32WB0-BLE-PAwR-ES
• BLE_ESL: STM32CubeWB0/Projects/NUCLEO-WB09KE/Applications/BLE/BLE_ESL at main · STMicroelectronics/STM32CubeWB0 · GitHub

 

[lucac]

Ok, thanks.

Isn't there any resource about combining PAwR and MESH using STM32WB09 ?

Thank you

[Dominique FOLLEZOUR]

Hi

 

The only alternative to enable mesh over WB0 and WBA series is to move to Zephyr ecosystem and use Zephyr mesh lib. In meantime ESL (PAwR) and mesh are not really compatible technology.

 

In PAwR - bi directional communication over advertising - the both entities are able to exchanges each others based on specific and critilca timing, coming from some timing allocation in the advertising frame. For sure this is not compliant to mesh.

 

The mesh is advertising as well, but without any latency constraints. 

 

Br

Dominique