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TDA4VM: CSITX run at regular intervals like display

hutian
Expert 1785 points
Part Number: TDA4VM

Hi experts,

I can easyly run the CSITX test case by: ./vx_app_conformance.out --filter=tivxHwaCsitxCsirx.CsitxCsirxloopback.

Unfortunately, the test case shown that: the CSITX will send a frame when CSIRX send a semaphore. How can i let CSITX sends frames at regular intervals like display working at a 25fps?

Thanks,

Hutian

  • 0
    TI__Expert 5615 points

    Hi,

    CSITX is not a regular streaming interface like DSS where we can program timings to achieve the desired FPS. You will have to assert timings between the transmission of two frames through SW. One way to achieve this is through the periodic tasks. In this case, when the task becomes alive you send out one frame and go to sleep. 

    Please take a note of the following point: since we are controlling timings through SW, you won't able to achieve accurate/exact desired FPS since this depends on system load and other factors in the system.

    Thanks & Regards,
    Vivek Dhande.

    Texas Instruments (India) Pvt Ltd