Re: [Discuss-gnuradio] USRP2 Reception Problem

[Josh Blum]

On 09/26/2012 01:52 AM, Bilal wrote:
> I m using USRP2,I have configured usrp2 and tested
> uhd_usrp_probe,uhd_siggen_gui and uhd_fft all works fine.
> Now i want to make my own program like uhd_fft but there is a problem that
> the terminal prompt returns right after i execute the program with 
> notification
> 
> address@hidden:/home/aqs/Desktop# python my_uhd_fft.py 
> linux; GNU C++ version 4.4.3; Boost_104000; UHD_003.004.003-224-gc2e197c0
> 
> address@hidden:/home/aqs/Desktop# 
> 
> 
> my_uhd_fft.py program is:
> 
> from gnuradio import uhd
> from gnuradio import gr
> from gnuradio.wxgui import stdgui2,fftsink2
> import wx
> class top_block(stdgui2.std_top_block):
>       def __init__(self):
>               self.addr=uhd.device_addr()
>               self.u = uhd.usrp_source(self.addr,\
>               uhd.io_type.COMPLEX_FLOAT32, 1)
>               self.u.set_samp_rate(40000000)
>               self.scope = fftsink2.fft_sink_c (panel, \
>               512, 40000000)
>               self.connect(self.u, self.scope)
> if __name__ == '__main__()':
>       app = stdgui2.stdapp(top_block,"FFT",nstatus=1)
>       app.MainLoop()
> 

I'm not 100% positive that the flow graph is actually started in this
case. I highly recommend that you put a similar application together in
GRC with USRP source and WX scope sink block. You will get nicely
generated code too!

-josh