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Original question:

IWR6843: Chirp limits and timing

IWR6843: See Sync Pulse and control start of chirp

Calex36
Intellectual 2225 points
Part Number: IWR6843
Other Parts Discussed in Thread: MMWAVEICBOOST, , MMWAVE-SDK

Hi,

Using the 2 x IWR6843ISK+MMWAVEICBOOST

is there a way to see a synchronisation pulse that will occur at the start the chirp pulse?  Perhaps I can see this on a scope.  I can then compare the synchronisation of the two systems.

 Is there a way to control the start of the chirp signal, so perhaps I can synchronise to the two systems to be in phase and out of phase.  Perhaps I can drive both systems from a common clock and then deliberately control a time (or phase) delay between the two systems.

I think i saw something similar in this thread discussing controlling start time

Thanks

Calex

  • 0
    TI__Guru*** 148044 points
    Hi,

    It is possible to trigger a frame with a hw pulse.

    Maybe you can create a frame that has a single chirp and trigger it from hw pulse

    thank you
    Cesar
  • 0 in reply to Cesar
    TI__Mastermind 30405 points
    Hi Calex,

    You can specify hardware based triggering in the frameCfg API to start the frame using the frame sync hardware signal. Additionally you can specify the trigger delay in the same API if you want to start the frame on the two devices at a specific timing offset. Please look at frameCfg command in the MMWAVE-SDK user guide for more details.

    Regards
    -Nitin