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Re: [Discuss-gnuradio] gr-usrp library

From: Ges
Subject: Re: [Discuss-gnuradio] gr-usrp library
Date: Sun, 16 Apr 2006 21:38:42 -0700 (PDT)

Hi Eric,
I am facing a weird problem.

I was trying the rx.py and tx.py gmsk scripts in gnuradio-examples/python/gmsk - this is the old gmsk implementation. I am getting the character stream I sent using tx.py at the receive side. But if I disable the gui (using the --no-gui option), then I do not get any output.

I couldnt find any reason for why this is happening. I thought that maybe its because of some kind of a time delay. So, I ran rx.py first and then tx.py, but if the --no-gui option is used I do not get anything in the file_sink at the rx side.

Any ideas as to why this is happening?


Eric Blossom <address@hidden> wrote:
On Sat, Apr 15, 2006 at 12:07:48PM -0700, Ges wrote:
> Hi Eric,
> Thanks a lot. The gian for tx was different from the rx side.
> I having a little trouble understanding the flow of the new gmsk2 implementation.
> Can you give me a quick overview of it?
> I am confused with where its getting a character to convert and send
> out. Is there a way to just read a character stream from a file and
> pass it to the gmsk2_mod to convert and send out? Will the
> simple_framer work with this implementation?
> I am looking a simple implementation where I can read a character
> stream from a file and send it to across the SMA cable and write it
> to a file on the receiver side. If I have a simple implementation
> working as proof of concept in Click, then i can try a TDMA mac on
> top of it.

Do you understand benchmark_gmsk_tx, benchmark_gmsk_rx and
tunnel_ip_null_mac? If not, what are your specific questions?


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