Hi, Marcus, Thanks a lot, got it. I may have to have a look at the examples in gr-uhd, see how the codes are changed. And curious, what do you mean by plugging a USRP1 to USRP E100? I only understand that we can change daughterboards for a motherboard.
Thanks, Yooxi 2011/10/19 Marcus D. Leech <mle...@ripnet.com> > On 19/10/2011 12:41 PM, xi yang wrote: > >> Hi, Marcus and Sean, >> >> I'm a little bit confused by the relationship between UHD and gnuradio. >> I thought we can use either UHD or gnuradio, just UHD provides some unique >> interfaces for the products from Ettus. >> Do you mean that our old ofdm codes that work on USRP1 cannot be used >> anymore? >> We are working on Non-Contiguous OFDM and our previous codes can disable >> some subcarriers on USRP1. >> Because we want to do FFT on FPGA, we change to use USRP E100, but codes >> on the host are useless now? >> >> In the "old days" prior to about 2 years ago, the USRP2 and USRP1 devices > (all that existed at the time) had their own individual APIs, and > applications/examples were written *knowing* which interface type they > were using. > > Then along came UHD, which provides a universal API for all of Ettus' > devices, and gr-uhd is the little piece of "glue" that glues Gnu Radio > to the UHD device stack. > > But hardly anyone converted their examples to use UHD, and that task is now > being done by Tom Rondeau and others. > > Further, some of the new devices, notably E100, B100, N2XX, and newer > daughtercards are only available with a UHD driver interface. > > So any applications/examples that haven't been ported to using UHD cannot > work with non-UHD devices, and the E100 USRP-type device > only "speaks" UHD. > > The "next" branch has examples that have been converted to use UHD, which > should "just work" on your E100 platform. Although not > all the examples have been converted yet. > > > >
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