On 01/14/2011 03:43 PM, Steve Mcmahon wrote: > But I still don't understand what it is that has to change in GRC to > use UHD. Do you mean that the "USRP2 Sink" and "USRP2 Source" blocks > are only for the raw Ethernet interface, and to use UHD you would need > to use a different block in your GRC flowgraph? > > Thanks again. > > > --- On *Fri, 1/14/11, Marcus D. Leech /<mle...@ripnet.com>/* wrote: > > > From: Marcus D. Leech <mle...@ripnet.com> > Subject: Re: [Discuss-gnuradio] The (in)famous channel 0 not > receiving error > To: "Steve Mcmahon" <steve.mcmaho...@yahoo.com> > Cc: discuss-gnuradio@gnu.org > Date: Friday, January 14, 2011, 3:36 PM > > On 01/14/2011 03:28 PM, Steve Mcmahon wrote: >> Marcus: >> >> You say that "the UHD provides a different API than "classic", >> and usrp2_fft.py uses the "classic" API." I'm brand new to UHD >> and just getting started with it. Could you explain in a little >> more detail about the two APIs and the differences between them? >> > UHD provides a more uniform, device-independent, interface for > applications to use, including GRC. > > >> >> I'm using raw Ethernet now with a USRP2+WBX, so why would, when >> using GRC to create a flowgraph, the interface change? >> > GRC supports both "classic" and UHD API for USRP2. > > I recommend UHD for all new users, since they have nothing to be > backwards compatible with, and > the UHD is an all-round better API for Gnu Radio applications to > be using, since it supports > USRP1, USRP2, N210, E100. Further new daughercards and > baseboards will only support UHD, > so it make sense to switch to UHD. > > Most of the examples in Gnu Radio haven't yet been updated to use > the UHD interface, and that includes > things like usrp2_fft.py. > > > -- > Principal Investigator > Shirleys Bay Radio Astronomy Consortium > http://www.sbrac.org > > Yes, with an up-to-date GnuRadio and UHD installation, you use the "UHD" blocks, use a "single-USRP source" or "single-USRP sink" block, from the UHD blocks in GRC.
If you don't have the UHD blocks in GRC, then you aren't up to date. Also, you'll need to use the UHD firmware in your USRP2 hardware. -- Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org
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