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LP-CC1312R7: Memory usage with a 100 nodes

Roshan Shenoy
Prodigy 40 points

Part Number: LP-CC1312R7
Other Parts Discussed in Thread: CC1314R10, CC1312R7, SYSCONFIG

Hi there currently i am using the LP-CC1312R7 which has 144kb of ram and 704kb of flash, we want to test one border router with 100 node router, is the ram sufficient enought to support these amounts of nodes. I had checked the example firmware for the border router that was given with the TI sdk. It had used up 96% of the RAM already and i've not even connected anything to it. Just trying to make a decesion on whether to upgrde to the higher memory version.

  • +1
    TI__Mastermind 35790 points

    Hi,

    In the event that there is too little memory with CC1312R7 then it is possible to use CC1314R10 which is pin compatible and drop-in with CC1312R7.

    CC1314R10 has 256 kb of RAM and 1024 kB of flash.

    Assigning this thread to a software engineer that can conclude if CC1312R7 is sufficient or not for 100 nodes.

    Thanks.

  • 0
    Prodigy 40 points

    Part Number: LP-CC1312R7

    Hi,

    Could a software engineer please confirm whether CC1312R7 is sufficient for a Wi-SUN FAN network with 100 router nodes?

    We are using:
    - Device: CC1312R7
    - RAM: 144 kB
    - Flash: 704 kB
    - Application: Wi-SUN FAN Border Router / Router Node evaluation
    - Target network size: 100 nodes
    - SDK version: simplelink_cc13xx_cc26xx_sdk_8_33_00_16
    - RTOS: FreeRTOS

    I would like to know:
    1. Whether CC1312R7 has enough RAM/flash for a 100-node Wi-SUN network.
    2. Whether CC1314R10 is recommended instead.
    3. What compile-time settings or SysConfig limits affect memory usage for 100 nodes.
    4. Whether TI has a tested maximum-node reference configuration for CC1312R7.

    Many thanks,
    Roshan

  • 0 in reply to RGW
    TI__Expert 6097 points

    Hi Roshan,

    I don't have the numbers at hand, it will take me some time to find it. However you should be able to run 100 nodes on a CC1312R7 Wi-SUN Border Router. In any case, you could upgrade to CC1314R10 as suggested by Richard.

    The default Border Router on CC1312R7 SDK 8.32 TIRTOS, uses around 82% (118k/144k), similar to what is described on https://www.ti.com/lit/po/swra714b/swra714b.pdf.

    I can see that the FreeRTOS version is around 96%. I'm not sure about the difference at the moment.

    Best regards,

    Daniel

  • +1 in reply to Daniel Guarecuco Aguiar
    TI__Expert 6097 points

    Hi Roshan,

    You should be able to run around 100 nodes on a CC1312R7. However the recommended solution is to move to the RCP (Radio Co-Processor) mode, where we move the SRAM usage from the SOC to the Linux board. So you can run even more devices in the network.

    This is a guide to set it up: Linux host wfantund

    Best regards,

    Daniel