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AWR1642: frame and chirp process time tracking in AWR1642 SDK2.xx

He wei
Expert 1425 points
Part Number: AWR1642

Dear Officer,

We can get the interChirpProcessingTime, interChirpWaitTime, interFrameProcessingTime and interFrameWaitTime from DSP code MmwDemo_MsgTimeInfor structure. 

1. What is unit for these value? Is it cpu ticks rather than usec or msec? How to convert in time unit?

2.  How to calculate these time limit/maximum time based on the chirp/frame configuration? So we can monitor these timing and make sure it won't exceed the deadline limit?

3. Can we get the timing tracking from mss side also? Because we also need to including the process time in mcu side and also the UART/CAN transmission time..

Thanks and best regards

He Wei

  • 0
    TI__Guru*** 148974 points

    1) The unit is DSP CPU cycles. Convert using 600MHz CPU frequency

    2) It is helpful to understand the following (please see SDK documentation)

        a) Acquisition Period

        b) Inter Frame Period

        c) Send Out Data time (on ARM)

    3) Please look at a xWR1443 demo to see how/if timing is provided

    Is it possible to share more details about the application you are trying to implement so we can provide better support?

    thank you

    Cesar