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Re: [Discuss-gnuradio] Streaming Funcube Dongle Pro+ over UDP

From: Vanush Vaswani
Subject: Re: [Discuss-gnuradio] Streaming Funcube Dongle Pro+ over UDP
Date: Sat, 10 Aug 2013 11:15:18 +1000

Iain, thanks for that. Will be helpful in my gnuradio pursuits.

I think the TCP blocks should be definitely be decoupled from GRC...

With regards to my problem, I tried the ncat/fifo approach, and it works acceptably. Using TCP, I get a few overflows on the sender (beaglebone) as expected due to the nature of TCP. With UDP, I can stream with very few skips (and this is all over WiFi too). Thus, for my app, I may use a fifo + Twisted to get data out of gnuradio. I think the TCP/UDP blocks are a bit spartan in gnuradio.

For the record, here are my commands
sender: ncat -u 31337 < txfifo           (txfifo is a File sink directly connected to a FCDPP source)
receiver: ncat -k -u -l > rxfifo             (rxfifo is a File source connected to a WBFM Receiver and then Audio sink)

On Sat, Aug 10, 2013 at 8:15 AM, Marcus D. Leech <address@hidden> wrote:
On 08/09/2013 05:29 PM, Marcus Müller wrote:
You're right, although grc_blks2 is in grc/grc_gnuradio, which, as far as I would guess from here,
won't be built if you don't build GRC, which you usually don't when in a headless environment.
There's also no necessity to do the development side on the target platform, if you're just targetting a headless environment.  Take the generated
  Python, and run it on the target.

Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium

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