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Original question:

CCS/AWR1642: 1642 singe antenna configure BPM

Compiler/AWR1642: Editing BPM Configuration on AWR1642

George Denove
Expert 1435 points
Part Number: AWR1642

Tool/software: TI C/C++ Compiler

Hi there,

I am looking for advice on what specifically in the AWR1642 firmware (likely revolved around the bpmcfg part of the code) I can change so that I can change the phase (0 and 180) of subsequent chirps. Since the hardware (i.e Tx 2 in the attached BPM scheme) can physically do it, I know it is possible. Just rather not sure how to make the radar do it.

I have two radars that are not collocated and I want to run the Sa and Sb MIMO scheme (attached) you all implement for a collocated transmitter for my two distributed transmitters. That is why I am asking the question.

Also, I do not care about on board processing as that is all done offline.

Thank you!

George

5078.bpm.pdf

  • 0
    TI__Guru*** 148594 points

    Hi,

    Are you able to capture raw data with a DCA1000 capture board?

    If you are then please see this thread regarding bpm configuration

    Thank you

    Cesar

  • 0 in reply to Cesar
    Expert 1435 points

    Hi Cesar,

    Thank you for your reply. Yes, I am able to capture raw data with a DCA1000 capture board.

    I read through that thread. While it is a good reference, it does not necessarily address my question. The SDK documentation says that the AWR needs two transmitters enabled to configure BPM. Since I want to only use one transmitter on each of the two AWR1642 nodes, it seems like I will not be able to configure BPM on the radar. 

    Is there a work around? Can you enable one transmitter to transmit what chirps you want (either 0deg/0deg or 0deg/180deg) and enable the other, but have it transmit nothing? I am looking for direction in how to edit the firmware if needed.

    Thank you.

    George

  • 0 in reply to George Denove
    TI__Guru*** 148594 points

    The SDK uses the BPM terminology in the context of BPM mimo which requires 2 Tx.

    It is possible to enable a phase of 0deg or 180deg for each chirp with one TX

    thank you

    Cesar

  • 0 in reply to Cesar
    Expert 1435 points

    Thank you!