Dear Eric, Thanks for the pointer. I get raw IP packets. I have written a C program to read these packets and plot the spectrum in matlab. I wanted to use gnuradio to do different signal processing functions. Also I plan use the OFDM module in gnuradio. I am trying to understand the usrp_spectrum_sense.py file in the example and see what are the functions/classes related to USRP are used.
I will go through the pointers you have given and get back with specific questions. One question regarding the samples that come out of USRP. Are they baseband I/Q samples? Thanks, Anand On Fri, Jul 18, 2008 at 5:09 PM, Eric Blossom <[EMAIL PROTECTED]> wrote: > On Fri, Jul 18, 2008 at 04:52:13PM -0400, Anand Prabhu Subramanian wrote: > > Hello, > > > > I am currently working on a custom made SDR platform and trying to use > gnu > > radio to program it. I understand that I need to write seperate source > and > > sink blocks to receive and send I/Q samples from and to the device. I was > > wondering if anybody in the list could help me in understanding how to > > write these block. I suspect I would need to write something similar to > > the usrp code. Can you please let me know a starting point on how to > write > > these blocks? The device I am currently using interfaces with the host > > using ethernet and sends/receives base band I/Q samples. > > TCP, UDP, or raw ethernet? If TCP, it ought to be very easy to talk to. > > > Are there documentations on interfacing gnuradio to SDR platforms other > > than usrp. It would be very helpful if you could give some pointers. > > > > -Anand > > Anand, the USRP is one of the more flexible devices, and thus all of > the code around it is fairly flexible and complicated by all the > things that can be tweaked. In general, the code doesn't have to be > that complicated. > > To get an idea about a couple of basic but useful sources and sinks, > take a look at > > gnuradio-core/src/lib/io/gr_file_{source,sink}.{h,cc,i} > > Eric >
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