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CC1310: In an environment where the temperature changes rapidly high, system is rebooted continously.

Part Number: CC1310

condition :
cc1310
SDK Version : simplelink_cc13x0_sdk_3_20_00_23
Use rfWsnNode example.
The transmitter sends a data packet every 60s.
There is no problem at normal temperature.

abnormal :
In an environment where the temperature changes rapidly high, system is rebooted continously.
If i block EasyLink_transmit() in NodeRadioTask.c, system is not rebooted.

Question :
What can i do to prevent the system from rebooting, in an environment where the temperature changes rapidly high ?

  • Hmm, this sounds strange

    What do you mean by continuously rebooting? Are the CC1310 being reset, or is the node losing contact with the network?

    Please provide info regarding what HW you are using and how your HW is powered.

    Also, please specify what you mean by rapidly high. How much does the temp changes (start and stop temperature), and how fast does it change?

    BR

    Siri

  • Thanks for the your quick reply. :)

    That's right.
    The CC1310 is being reseted in high temperature(around 37 degrees).
    The HW is self-made board.
    The power is 3.7V Lithium-ion battery.

    I'm sorry, I explained it wrong.
    It raises the temperature quickly and keeps it at that temperature(around 37 degrees).

  • Have you keep the rfWsnNode unmodifed, except for the changes necessary for adapting it to your HW?

    If it does not reset at 37 degrees if you remove the TX function, can you test with TX set to a much lower output power?

    BR

    Siri

  • Thank you very much for your reply, Siri.

    There are some modifications that might affect it, so I modified the rfWsnNode source a bit, and tested it.

    [Test Conditions]
    Test temperature : 37 degrees

    1. 868MHz@14dBm TX : Not Reset
    2. over 900MHz@14dBm TX : Reset ( We use this frequency bands )
    3. over 900MHz@12.5/12/7 dBm Tx : Not Reset

    [Questions]
    There seems to be a correlation between frequency, tx power, and temperature.
    How do you think about that?

    We need to tx with 14dBm.
    Do you have any recommendations to using 14dBm TX power in over 37degrees?

    Best Regards, SeoGyeong 

  • Would it be possible for you to run the same test on a Launchpad? This is to see if it's something with your HW that cause this.