[Discuss-gnuradio] UDP do not work correctly

2009-02-13 Thread feldmaus 
 Hi Gnuradio People, :-)

I tried to get the UDP sink and UDP source to work.
But it didn't work as it should. The FFT Plots only
shows a white screen. The CPU of my Work PC is under
100% and my Server PC too. Should this be a Problem of
threads ?
I have a network traffic between the connected pc's with
about 300Kbyte/s.

Do you have any hints for me?

Specification:
Work PC:
+ IP 194.94.26.158
+ Firewall with open UDP Port 13130:13133

Server PC:
+ IP 192.168.111.67
+ Firewall with open UDP Port 13130:13133

The Firewall was tested with nmap -p 13130-13133 -sU IP-ADRESS.

So i created a Flow Graph:
###
###SERVER PC###
[SIN Source]--\/--[USRP Sink]
  +--+
[COS SOURCE]--/\--[UDP Sink 1]

SETTINGS for UDP Sink 1:
  Local IP Address: 192.168.111.67
  Port: 13130
  Remote IP Address: 194.94.26.158
  Port: 13132


[USRP Source]--[UDP SINK 2]

SETTINGS for UDP Sink 1:
  Local IP Address: 192.168.111.67
  Port: 13131
  Remote IP Address: 194.94.26.158
  Port: 13133




###WORK PC###
[UDP Source1]--[FFT Plot TX]

SETTINGS for UDP Source1:
  IP Address: 194.94.26.158
  Port: 13132

[UDP Source2]--[FFT Plot RX]

SETTINGS for UDP Source2:
  IP Address: 194.94.26.158
  Port: 13133
###

Regards Markus



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Re: [Discuss-gnuradio] UDP do not work correctly

2009-02-13 Thread Jason Uher 
 Do you have any hints for me?


Unless I am misunderstanding your diagram, I think you need something
to slow down rate of the cosine source ([COS SOURCE]--/\--[UDP
Sink 1]).  If you connect it to a non-rate limited sink it will just
pump out samples as fast as it can, hence your 100% CPU usage.

Try a  gr.throttle() in between.


Jason


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