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aboabra
Associate
July 14, 2025
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OpenThread border router

  • July 14, 2025
  • 2 replies
  • 649 views

Hello,

I am working on a project using the STM32WBA microcontroller and looking for a way to provide Wi-Fi connectivity in order to connect the system to a web server.

I've read in several places across ST's website that the STM32WBA series supports OpenThread Border Router (OTBR).
aboabra_0-1752477267824.png

However, I couldn't find clear information on whether the STM32WBA can act as a standalone OTBR, or if it's limited to acting as a Radio Co-Processor (RCP) like some examples for the STM32WB series.

Does anyone know if it's possible to use the STM32WBA alone as a full OTBR? Or would I need to connect it to an external host that handles the Wi-Fi stack?

Any clarification or pointers to official documentation would be really appreciated!

 

Best answer by STTwo-32

Hello @aboabra and welcome to the ST Community.

A OpenThread border router (OTBR) is a specific router that connects a Thread network to other IPv6-based networks like Wi-Fi or Ethernet. Since the STM32WBA does not support Wi-Fi or Ethernet connection, so it can’t be a OTBR but it will need a host for IPv6-based network.

Best Regards.

STTwo-32

2 replies

STTwo-32
STTwo-32Answer
Technical Moderator
July 14, 2025

Hello @aboabra and welcome to the ST Community.

A OpenThread border router (OTBR) is a specific router that connects a Thread network to other IPv6-based networks like Wi-Fi or Ethernet. Since the STM32WBA does not support Wi-Fi or Ethernet connection, so it can’t be a OTBR but it will need a host for IPv6-based network.

Best Regards.

STTwo-32

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    A
    aboabraAuthor
    Associate
    July 14, 2025

    Thanks for the fast response!

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