Ah, and I forgot to mention one more thing. The errors that I get when
running usrp_fft.py are methodical, with one every second or so, which seems
odd. if I wasn't getting anything I'd imagine it to flood the screen (which
is what happens i the USB cord is yanked)

2009/7/30 Jonathan Coveney <[email protected]>

> Ok, this is my attempt at a definitive bug report for this problem. Since
> it's mysterious, I'm going to try and be as descriptive as possible. Thanks
> in advance for your patience and help.
>
> I am on a second gen macbook, OSX, running the latest (as of a day or two
> ago) from the svn trunk
>
> First, running usrp_print_db.py, I get this
>
> usb_control_msg failed: usb_control_msg(DeviceRequestTO): pipe is stalled
> usb_control_msg failed: usb_control_msg(DeviceRequestTO): pipe is stalled
> usb_control_msg failed: usb_control_msg(DeviceRequestTO): pipe is stalled
> RX d'board A: Basic Rx
> RX d'board B: <none>
> TX d'board A: <none>
> TX d'board B: <none>
>
> I imagine that to get this information, information had to be sent over the
> USRP to my computer, so both sending and receiving information over the USB
> is possible.
>
> Here is the info from system profiler:
>
> USRP Rev 4:
>
>   Product ID:    0x0002
>   Vendor ID:    0xfffe
>   Version:    1.04
>   Speed:    Up to 12 Mb/sec
>   Manufacturer:    Free Software Folks
>   Location ID:    0x04100000
>   Current Available (mA):    500
>   Current Required (mA):    Unknown (Device has not been configured)
>
> This is a screenshot of what happens on running usrp_fftp.py
>
> http://www.jcoveney.com/Picture%201.png
>
> As you can see, everything loads properly, but then it doesn't capture any
> data. Very odd.  Could this perhaps be a problem with the batch USB data
> transfer? IE for some reason, I can still send and receive data, but not in
> bulk?
> (also, there is a wx related error that I've always gotten and has never
> effected it before, and doing some research seems not to matter, but if you
> think it would help to fix it, I'm all ears)
>
> Obviously, if I run other stuff relying on the daughterboard, the same
> happens. I've talked to some people and they think that it could be static,
> but I don't know. What on the board could be whacked such that this is what
> does not work?
>
> Is there any recourse for fixing USRP's, or am I at the western frontier of
> open source development? As always, your help is greatly appreciated.
>
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