• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 54 subscribers
  • Views 1152 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

CC1310: CC1310 with Contiki in Long Range Mode?

GGA
Genius 3985 points
Part Number: CC1310
Other Parts Discussed in Thread: CC1120,

Hi,
we have some experience with Contiki & CC1120, but due to a new project current constraints we need to dig into CC13xx.

As the sensivity of CC13xx in standard mode doesn't fit our needs, we wand to use it in the famous 'long range mode' (famous because I found hints to it but no sufficient documentation yet. Maybe someone coould point?).

Is this mode supported in the TI Contiki implementation and what is the price tag of using it?

thx

  • 0
    TI__Genius 14860 points

    Hi,

    GGA said:
    Is this mode supported in the TI Contiki implementation

    the mode is not supported out of the box. You would need to

    • modify the setup-command and overrides in cpu/cc13xx-cc26xx/rf-core/smartrf_settings.c according to what SmartRF Studio exports.
    • maybe modify timing parameters in the MAC layer

    The first part is tricky if you want to keep flexibility, because Contiki assembles the override list based on some flexible macros while SmartRF Studio just exports a plain list of values. One option is, to just replace the entire override list and the setup command. That should work.

    I have no idea whether and how the MAC layer needs to be adjusted because the long-range mode changes the timing behavior. If you can make it work, let me know.

    GGA said:
    what is the price tag of using it

    Slower communication and therefore higher power consumption.

  • 0 in reply to Richard W.
    Genius 3985 points

    @Richard,
    thx. for the info; sounds scary.
    What is the minimum ChBw/max. sensivity one can achieve with out-of-the-box Contiki setup?

    ---------

    That leads me back to my question (I raised it first ~2 years ago): when will TI issue a CC13xx with narrow band RF front end ... ?

    Even upcoming 13x2 do not point in that direction :-(

  • 0 in reply to GGA
    TI__Genius 14860 points

    GGA said:
    What is the minimum ChBw/max. sensivity one can achieve with out-of-the-box Contiki setup?

    Current CC1310 settings use the 50kbps GFSK PHY with 98 kHz filter bandwidth. For performance, have a look at the CC1310 datasheet section 5.6.

    GGA said:

    That leads me back to my question (I raised it first ~2 years ago): when will TI issue a CC13xx with narrow band RF front end ... ? Even upcoming 13x2 do not point in that direction

    Upcoming CC13x2 will contain improvements regarding narrow-band support, but I cannot say how much compared to CC13x0.