hi josh: Thank you for your last e-mail.I am sorry I did not mention the version of GRC I used,and it is 3.2.2(GNU Radio is 3.3.3). And I found the probe_function block as you said.I use a scope block to connect to the probe_function block to see the output of the blcok.I also put the bpsk modulated data input this block,and put the output of the block to a file_sink.
I use the ID of the gr_probe_mpsk_snr block as the parameter Block ID of the probe_function block, then set the parameter Function name as the name of the functions in the gr_probe_mpsk_snr block such as signal_mean(), snr().But there is an error " 'gr_hier_block2_sptr' object has no attribute 'signal_mean' "in the flow graph .Why did it happen? Did I set some parameters wrong? Can you give me a example flow graph (not the one in the digital-bertfolder)about the gr_probe_mpsk_snr and probe_function? Thank you inter > Date: Thu, 7 Apr 2011 11:33:23 -0500 > From: [email protected] > To: [email protected] > Subject: Re: [Discuss-gnuradio] How to use the SNR block in the GRC > > > > On 04/07/2011 05:18 AM, intermilan wrote: > > > > Hi all: > > I found these is a block gr_probe_mpsk_snr in the grc which is used to > > measure the snr of the bpsk or qpsk signals. But I > > do not know how to use this block.In my flow graph, I put the bpsk > > modulated data input this block,and put the output of the block to a > > file_sink. > > But there is nothing in that file.So I hope someone can tell me how to use > > this block. > > Thanks in advance. > > inter > > > > > I dont know what version your using. But I reworked how the probe blocks > work since the last release, so here is how it works in the current master: > > Attach a probe block to your signal. Notice in the probe block docs, > that the available functions are listed. Use the function probe block to > read that function periodically and to write the value into a variable. > > To display the result, just use the ID from the function probe in the > value parameter for the appropriate graphical widget. > > -Josh > > > > > > > > > _______________________________________________ > > Discuss-gnuradio mailing list > > [email protected] > > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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