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CC2340R5: Multiple node using proprietary RF protocol

Srinath Baskaran
Prodigy 20 points
Part Number: CC2340R5
Other Parts Discussed in Thread: CC2662R-Q1

Tool/software:

Hello,

Currently I'm working on an application which has multiple slave nodes sending the packet data with 100msec interval to a single master node over wireless technology.

Initially we tried with BLE but as a parallel investigation I would also like to try the TI's proprietary RF protocol. I want to know the possibility of creating a star network using this proprietary RF and any examples to create such network with the simplelink_lowpower_f3_sdk_8_20_00_119.Please do guide me with this possibility.

Also another question is that we are also trying to understand the wBMS solution from TI, But due to the less availability of CC2662R-Q1 eval  boards I want to know the possibility of flashing the Wbms SDK examples on cc2340R5 launch pad. This question connect with the previous question of trying a star network using TI's proprietary RF protocol on CC23450R5.

Fast response will be really helpful for us.

Thanks in advance.

 

  • 0
    TI__Guru**** 218257 points

    Hello Srinath,

    It should be possible to create a custom star network using the rfPacketTx/rfPacketRx examples as a reference, but this will not be as refined as fully-fledged radio stacks and could be missing some features critical for your application.  You could also consider using the Zigbee stack with ZED nodes reporting to the ZC.  The TI 15.4-stack solution will be released for the SimpleLink F3 SDK later in 2025.

    There is unfortunately no way to incorporate the wBMS solution onto the CC2340R5.

    Regards,
    Ryan

  • 0 in reply to Ryan Brown1
    Prodigy 20 points

    Hi Ryan,

    Thank you for the response, Now I got some clarity.

    Since you told it is possible to create a star network using rfPacket Tx/Rx examples ,I'm currently working on the same. I have flashed two nodes/slaves(as a start) with rfPacket Tx and one node/Master with rfPacket Rx making a small star network.

    Initially I was facing the issue of receiving the packets simultaneously from the slave nodes ,my application requires data to be sent synchronously by the slaves, i.e both should start transmitting the data at same time and with same interval of 100msec.

    To make network to work I did a work around ,when slave node_2 is initiated 50msec later than the slave node_1 I was able to capture both the packets by Master. But this makes my application absolute and it loses to satisfy by primary requirement of having synchronous communication and when I have to add further slave nodes this above method will not be feasible. I think these are the features you told will be missing in this basic Rf examples right?

    Can you please suggest any way to make this kind of application possible using the proprietary RF or any other alternative technology which might be able to handle such a network or the traffic. Do you think the wBMS solution from TI will be able to handle such a network.

    Regards,

    Srinath

  • 0 in reply to Srinath Baskaran
    TI__Guru**** 218257 points

    Hi Srinath,

    This is indeed the kind of situation I was referring to involving simplicity of the Prop RF. With multiple networks at 100 ms intervals, even Zigbee/15.4 protocols would struggle to keep up with multiple modes and require retransmissions.

    You will need to post a separate, dedicated post about wBMS for further support.

    Regards,

    Ryan

  • 0 in reply to Ryan Brown1
    Prodigy 20 points

    Thanks Ryan for the response, I'll  post another thread asking about the details of wBMS.