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Mihaita Ivascu
Mihaita Ivascu
Associate III
May 21, 2025
Question

How change SubGHz_Phy_AT_Slave example for P2P LoraWAN

  • May 21, 2025
  • 2 replies
  • 447 views

Hello,

 

     I am running SubGHz_Phy_AT_Slave on STM32WL55JC1 board and I see when running AT commands menu that there are TX and RX tests. 

    I would like to use that example for peer to peer LoraWAN  between two STM32WL55JC1 boards meaning one sends 100 bytes using Radio and t he second one receives it and acknowledges but I am not sure how to modify that example.

     I have seen that there are suggestions about modifying some examples for using only Radio.Send and Radio.Recv for having peer to peer but not sure how it applied to this SubGHz_Phy_AT_Slave example.

    In that example I see that the TX and RX tests use some random generated payload(with Prbs9_generator)

    Has anyone used peer to peer Lorawan between 2 o boards successfully with the ST examples?

 

Thanks,

     Mihai

 

 

 

2 replies

Andrew Neil
Andrew Neil
Super User
May 21, 2025
@Mihaita Ivascu wrote:

peer to peer LoraWAN 

That doesn't make sense: LoRaWAN is, by definition, a "star" network - it is not peer-to-peer.

https://lora-alliance.org/about-lorawan/ 

Do you mean just LoRa - not LoRaWAN ?

For that, see the "Ping-Pong" example ...

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
Mihaita Ivascu
Mihaita IvascuAuthor
Associate III
May 21, 2025

Yes, I meant Lora. Sorry

STTwo-32
STTwo-32
Technical Moderator
May 21, 2025

Hello @Mihaita Ivascu 

As said TDK, for P2P communication, LoRa is what we are toking about. So, you may can use the SubGHz_Phy_PingPong and the STM32WL-SubGHz-PhyBasic-Tx-Rx. For the AT commands, you need to configure your own example based on the LoRa examples and you can refer to the LoRaWAN_AT_Slave just to know how to AT Command works.

Best Regards.

STTwo-32

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    Mihaita Ivascu
    Mihaita IvascuAuthor
    Associate III
    May 21, 2025

    Or I should use the PingPong example and add there the AT commands code ?

     

    Thanks,

         Mihai

     

    Andrew Neil
    Andrew Neil
    Super User
    May 21, 2025

    So you do just want LoRa - not LoRaWAN - then?

     

    @Mihaita Ivascu wrote:

    Or I should use the PingPong example and add there the AT commands code ?

    If you want AT commands, then you will have to add them.

    The example works without AT commands.

    The example illustrates communication between two nodes using LoRa modulation - which is what you wanted? 

    A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
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