RE: [Discuss-gnuradio] Big bugs out of nowhere...

[Jared Jensen]

As Root, the effects are the same.  I'd been trying it as root since you mentioned the groups Eric.

BUT, George, thanks for the idea.  I have 2 USRPs.  I switched the power supplies (DC converters) and it's golden now.  I tested the voltage on the first power supply with a Fluke and it was sagging down to around 3 Volts with no load on it.  I think the process of flashing the FPGA and starting to run it was pulling it down to ground or something close, and basically turning off the USRP.  It makes sense now too, because I'd hear the fan turn off sometimes while doing this.  Anyway, power supply #2 works, and I have lots of DC converters, so I'm back up and running.  Thanks for the help.

:)

j0j

> Date: Mon, 17 Mar 2008 12:41:36 -0400
> From: address@hidden
> To: address@hidden
> CC: address@hidden; address@hidden
> Subject: Re: [Discuss-gnuradio] Big bugs out of nowhere...
>
> Have you changed anything on the USB bus? For example, adding another
> device that is USB intensive or adding a hub? I received this error
> once and narrowed it down to my webcam on the same bus sucking up
> bandwidth, causing the USRP to have a hard time initializing. Once I
> disconnected the webcam, it went away.
>
> - George
>
>
> Eric Blossom wrote:
> > On Mon, Mar 17, 2008 at 05:50:03AM -0400, Jared Jensen wrote:
> >
> >> Yes. I double checked just to make sure. I have a usrp group. I'm
> >> in it. My 10-usrp.rules file is verbatim from the site. In the
> >> past, I had no trouble accessing the usrp as non-root... but I
> >> triple-checked, and the group is setup correctly.
> >
> > Let me ask the question a different way.
> >
> > If you run as root, does it work?
> >
> > Eric
> >
> >
> >> I restarted, and I still get the same behavior.
> >>
> >> j0j
> >>
> >>> Date: Fri, 14 Mar 2008 10:54:42 -0700
> >>> From: address@hidden
> >>> To: address@hidden
> >>> CC: address@hidden
> >>> Subject: Re: [Discuss-gnuradio] Big bugs out of nowhere...
> >>>
> >>> On Fri, Mar 14, 2008 at 10:48:29AM -0400, Jared Jensen wrote:
> >>>> I haven't been using my usrp for a little while. I've been porting
> >>>> my code to a TI C64x+. I came back to my usrp today and tried to
> >>>> run just a basic receive for test data for my TI DSP. I got the
> >>>> following error. In usbview I see a "USRP Rev4" under my ehci
> >>>> controller. I thought it might be the board, so I grabbed my other
> >>>> usrp, and the exact same thing happened. (This is with
> >>>> gnuradio-3.1.1 ) So I tried my older gnuradio install, and tried to
> >>>> run usrp_fft.py... and the same things happened. I checked
> >>>> /usr/local/share/usrp. It has all of the rbf (see below). Has
> >>>> anyone encountered this before? It was just a few months back
> >>>> everything was great... I didn't touch gr for a while... came back
> >>>> and BOOM. :( No joy.
> >>>
> >>> Have you followed the instructions for ensuring that you can access
> >>> the USRP w/o being root?
> >>>
> >>> http://gnuradio.org/trac/wiki/UdevConfig
> >>>
> >>> Eric
> >>>
> >>>
> >>>> usb_control_msg failed: error sending control message: Protocol error
> >>>> usb_control_msg failed: error sending control message: Protocol error
> >>>> usb_control_msg failed: error sending control message: Protocol error
> >>>> usrp: failed to load fpga bitstream /usr/local/share/usrp/rev4/std_2rxhb_2tx.rbf.
> >>>>
> >>>> File "/usr/local/lib/python2.5/site-packages/gnuradio/usrp1.py", line 1232, in source_c
> >>>> return _usrp1.source_c(*args)
> >>>> RuntimeError: can't open usrp1
> >
> >
> > _______________________________________________
> > Discuss-gnuradio mailing list
> > address@hidden
> > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> >

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