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USB3.0 Host Enable

Joe Kreidler
Prodigy 160 points

The release notes for the OMAP5432 EVM GLSDK 6.03.00.01 state the USB 3.0 host mode has been tested and I see from other posts that others have been able to get it to work. I have tried a couple of different devices and the EVM does not power up the devices.

Is the prebuilt image built with USB 3.0 host mode turned on or do I need to configure the USB 3.0 port?

Thank you in advance,

Joe

  • 0
    TI__Genius 10965 points

    Hi Joe,

    What device did you tried?

    And did you consider the jumper for the ID pin / or cable with  pulled down ID

    Regards,

    Boyko

  • 0 in reply to Boyko Kazakov
    Prodigy 160 points

    I tried connecting two devices to my EVM ES2.0 OMAP5432 board.

    The first one was a Western Digital My Passport USB 3.0 mass storage drive. The second device was a Point Grey Research USB 3.0 camera.

    I have not considered a jumper for the ID pin because these devices work fine connected to a Linux PC via a USB 3.0 port.

    The question I have is with regards to the SDK. Is the prebuilt image built with USB 3.0 host mode turned on or do I need to configure the USB 3.0 port because neither of my devices receive power from the USB 3.0 port but they do receive power from the USB 2.0 port.

     

    Joe

  • 0 in reply to Joe Kreidler
    TI__Genius 10965 points

    Hi Joe,

    I don’t think you understand what the jumper is for.

    Yor device may work perfect on your Linux PC , but your PC is host by default  and when you connect  to the uEVM you need intermediate cable to micro usb port ( and the jumper switches the port to host mode).

    Yes USB3 is supported and working  so if you want host mode to be default you must thinker the code and change the default configuration, so if there is no zero to ID host must still init.

    Regards,

    Boyko

  • 0 in reply to Boyko Kazakov
    Prodigy 160 points

    Boyko,

    Now I understand what you meant in your previous post, i.e., the USB 3.0 port on the EVM5432 is an OTG port so the ID pin (pin4) on the cable inserted into the port must be grounded to tell the EVM to act as the host.

    I would be able to answer this next question myself if I had the schematic but I am still waiting on the NDA to be processed so the schematic can be released to me. You mention a jumper and I am assuming you mean a jumper on the EVM5432 board. There are two pads (U30 and L31) with a J10 label next to them (see attached picture of the EVM5432). If these two pads are connected, is the ID pin then grounded so that the EVM USB 3.0 port always acts as a host?

    Thank you in advance for your help.

    Joe

  • 0 in reply to Joe Kreidler
    TI__Genius 10965 points

    Yes J10 is grounding the ID pin,  if you don’t want to solder jumper ,and you use normal otg cable ( which already have the ID signal  connected to  ground) the board will start acting as host.

    Regards,

    Boyko

  • 0 in reply to Joe Kreidler
    Prodigy 160 points

    I was able to use the USB 3.0 port after I grounded J10.

    Thanks for the help!

    Joe