[Discuss-gnuradio] message queue

2009-08-22 Thread shesh 

hi, 
   i am working on a spectrum sense code. in the following statement
self.msgq = gr.msg_queue(16) 
is there any significance for the number 16?does changing this number
affect the performance of the code?
kindly help.
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Re: [Discuss-gnuradio] Broken pipe when I write the payload to a pipe.

2009-06-29 Thread shesh 

hi Brook,
me too facing the same error. Could you/anyone please help?

Shesh


Brook Lin wrote:
 
 All right, I use 'import signal' and 'signal.signal(signal.SIGPIPE,
 signal.SIG_DFL)' to solve the [Errno 32] Broken pipe. Then I met another
 problem. The error says 'sh: pipe: not found'. However, pipe dose be
 created. How should I do next? Thanks.
 
 OFDM Demodulator:
 Modulation Type: bpsk
 FFT length:  128
 Occupied Tones:  100
 CP length:32
 TIMEOUT
 ok: True   pktno: 1n_rcvd: 1   n_right: 1
 sh: pipe: not found
 
 
 
 Brook Lin wrote:
 
 Hi All, 
 
 I am trying to write the payload to a pipe rather than to a file in
 benchmark_ofdm_rx.py. The script is attached below. However, I got the
 error 'Broeken pipe' when I run the script. Can anyone tell me why is
 that and how to correct it?
 
 rxdata.append(payload[2:])
 #os.mkfifo('pipe')
 myfile = os.popen('pipe','w')   
 for data in rxdata:
 myfile.write(data)
 myfile.close()
 
 Thanks,
 Brook
 
 
 

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Re: [Discuss-gnuradio] Wideband Spectrum Analyzer

2009-06-23 Thread shesh 

Firas,
have to written a detailed explanation  about usrp_spectrum_sense.py ? I
am unable to find it. Please let us know the link for the same...

Shesh


Firas A. wrote:
 
 Hi,
 
  Santi Ortega wrote :

 ok, so I have to modify this program to show in a Frame the results I
 want, haven't I?
 
 Yes, OR, you can wait for me to write a detailed explanation (may be in
 two weeks) about usrp_spectrum_sense.py.
 
 I think the understanding of this program is very important to every
 gnuradio user (practical FFT implementation + FSM control in its cpp code
 and weird Python commands in its .py)
 
 Best regards,
 
 Firas
 
 
 
 

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