On Mon, Feb 21, 2005 at 12:28:03PM -0500, Matt Chapman wrote: > I've just setup my USRP and have been running it for about a week now. > (Great job Matt and Eric BTW!) I had been running it as root because I > was seeing this error: > > [EMAIL PROTECTED]:~/Projects/usrp/test$ ./waterfallsink.py > usrp: found usrp rev2 > usrp_open_interface: usb_claim_interface: failed conf 0 > could not set config 1: Operation not permitted > open_nth_cmd_interface: open_cmd_interface failed > usrp: failed to load > firmware /usr/local/share/usrp/rev2/usrp_firmware.ihx. > Traceback (most recent call last): > File "./waterfallsink.py", line 234, in ? > [...] > > The simple solution was to add these options to the /proc/bus/usb entry > in the /etc/fstab file: > > usbfs /proc/bus/usb usbfs devgid=501,devmode=0664 0 0 > > Adding my gid(501) allows my user write access to any usb device plugged > into the system. I don't need to be root anymore.
Good solution. > Also, I was having problems with ALSA and sampling rates on my audio > board (it only supports 48khz). I've found that the easy solution is to > change the "audio.sink(audio_rate)" lines to > "audio.sink(audio_rate,'plughw:0,0')" This allows the alsa to emulate > many sampling rates, including the 32khz one the examples want to use. > Could this be done as the default for sink devices? It could be, but plughw is slow compared to hw if you don't need it. I think what we need is some kind of preference file where folks can specify their default audio device (different for OSS vs ALSA, etc). > I understand the need for ADC sources, but are many people sourcing > RF through their audio card? (I mean on purpose ;-) Some folks are using them for narrow band comms. Eric _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
