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XDS100 via USB over LAN works very slow, how do I get the speed back to normal?

Willem van Flishingen
Prodigy 20 points

I connected my CCS 3.3 via an "USB over IP interface" to my XDS100 JTAG interface,

so that I would be able to debug my F28335 application on a remote site.

It works, but its very slow. Loading the software into the DSP takes about 15 minutes.

At Reset the code composer tells me that it is waiting for the GEL callback "OnReset(0)",

and asks me to skip the wait loop. It seems to me that CCS is polling something, but that

the answer comes too late. I checked the network load but that’s still very low, and the

NetUSB-400i that I’m using should be capable to emulate a virtual USB2 port.

Can someone explain why the interaction between CCS and the JTAG interface is not

working well, and what I could possibly do to solve this?

  • TI__Guru**** 440221 points

    Hello,

    Just to confirm, have you tried connecting to your target directly to the PC via USB cable and checking if the speeds are ok? Just want to isolate it to the USB over IP configuration.

    Thanks

    ki

  • in reply to Ki
    Prodigy 20 points

    Hello,

    At this moment the application resides near my computer, if I connect the XDS100 directly to one of the real USB ports, its working fine.

    After the experiment with the "USB over IP"  unit, it still works well via the normal USB port. So there is nothing damaged.

    Because I want to debug outside the building, I tried to exchange the USB port by a viritual one, but before placing it outside,

    I tried it locally and connected the "USB over IP" unit with a short cable to the router that is also connected to my computer.

    Thanks

    Willem

  • in reply to Willem van Flishingen
    TI__Guru**** 440221 points

    Willem van Vlissingen said:
    At this moment the application resides near my computer, if I connect the XDS100 directly to one of the real USB ports, its working fine.

    If this is working well, it must be specific to the USB over IP via virtual port. I'm afraid we don't have much experience debugging those kinds of issues. Hopefully there are others who have tried this on this forum and can offer some advice.

    ki