Re: [Discuss-gnuradio] cygwin, usb_control_msg failed: ...

[Don Ward]

"steve" wrote:

> I installed libusb-win32-filter-bin-0.1.12.0.exe to c:\LibUSB-Win32.
> I compiled the sys and dll (cd /cygdrive/c/LibUSB-Win32/src; make all).

This shouldn't be necessary; simply installing libusb from Cygwin setup 
should be enough.

> I installed the USRP windows driver following the description at
> http://gnuradio.org/trac/wiki/USRPWindowsDriverInstall
>
> When i look at the driver property in the device manager
> i see that 'the device is working properly'. The libusb test program
> detects the device as well.
>
> When i run ./test_usrp_standard_rx.exe i get:
> usb_control_msg failed: usb_control_msg: sending control message failed,
> win error: A device attached to the system is not functioning.

This appears to be a new issue with version 0.1.12.0-1 of libusb.

> rx_overun
> xfered 1.34e+08 bytes in 4.25 seconds. 3.158e+07 bytes/sec. cpu time =
> 0.297
> noverungs = 1
>
> I get the first error message with any tool i try to access the USRP
> (usrp_rx_cfile.py for example).
>
> usrp_oscope.py displays the same error message but i see the signal
> graph (but almost no amplitude).

It sounds like everything is working despite the error message.  I also get 
the same error message with the new libusb, but my GNU Radio applications 
still seem to work ok.

I will look into the problem and see what I can find out.  For now you can 
either use it as is or go back to version 0.1.10.1-3 of libusb.

-- Don W.