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DRA71XEVM: Early Capture in DRA71xEVM

Chih-Kuo Hsu
Expert 1885 points
Part Number: DRA71XEVM

Dear Sirs:

  We are using PROCESSOR SDK VISION 03_08_00_00.

  We are using DRA71xEVM.

  We want to use the EARLY capture case in linux.

  The early code is in configuration tda2ex_evm_linux_all.

  I saw the early code is in rtos  early_capture_late_weston and the links in linux and ipc path are created after hlos linux is booted.

  Due to our final scenario needs encoding and saving the bitstream in linux. So the final links would be like the below

CAP(IPU)=>DUP(IPU)=>DISPLAY(IPU)   DUP(IPU)=>ENCODE(IPU)=>IPC_OUT(IPU)=>IPC_IN(A15)=>NULL(A15)

  Is the above situation possible in TI SDK?

Regards,

/ckhsu

  • 0
    TI__Guru** 113810 points

    Hi Ckhsu,

    Yes, it should be possible. I'm notifying my colleague who can also confirm once again.

    Regards

    Karthik

  • 0 in reply to Karthik Ramanan
    TI__Genius 14305 points

    Hi,

    It's possible but small changes in the link & chain as below.

    CAP(IPU)=>DUP(IPU)=>DISPLAY(IPU)   DUP(IPU)=>GATE(IPU)=>ENCODE(IPU)=>IPC_OUT(IPU)=>IPC_IN(A15)=>NULL(A15)

    The Gate link is added before encode link, because null link will not work until the Linux file system mount.

    When the file system is ready, you can the send the below command to the GATE link to open the gate.

    case '1':
    /* Send command to toggle operation status */
    System_linkControl(
    chainsObj.ucObj.Gate_1LinkID,
    GATE_LINK_CMD_SET_OPERATION_MODE_ON,
    NULL,
    0,
    TRUE);
    break;
    case '2':
    /* Send command to toggle operation status */
    System_linkControl(
    chainsObj.ucObj.Gate_1LinkID,
    GATE_LINK_CMD_SET_OPERATION_MODE_OFF,
    NULL,
    0,
    TRUE);
    break;

    You can refer the "/vision_sdk/apps/src/hlos/adas/src/usecases/vip_single_cam_connectorLinksA15_sgx_display" use-case for GATE link usage information .

    Thanks

    Gaviraju

  • 0 in reply to Gaviraju Doddabettahalli Bettegowda
    Expert 1885 points

    Hi Karthik and Gaviraju:

      Thank you very much, I will investigate on the code to see how to do it.

    Regards,

    /ckhsu