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List:       gnuradio-discuss
Subject:    Change the modulation mode of "constellation decoder" in real time
From:       "=?gb18030?B?xNzK6cTc0dQ=?=" <2127629883 () qq ! com>
Date:       2021-12-24 8:55:04
Message-ID: tencent_99CC5A93D1602F505ABF60D3AEC45486E409 () qq ! com
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Hello everyone£¬
&nbsp; &nbsp; Merry Christmas to you all£¡
&nbsp; &nbsp; I'm sorry to bother you here£¬I would like to ask if there is any \
method or suggestion for me to control the modulation mode of "OFDM frame equalizer" \
module and "constellation decoder" through "QT GUI chooser" or other widgets. I know \
that they cannot be changed. Because they do not have "callback" function, they will \
be fixed once the flow graph runs. I try to write "callback" function myself, But my \
C + + level is really limited. There are some errors here. I don't know how to solve \
them.



/usr/bin/ld: libgnuradio-digital.so.v3.8.2.0-111-g6aad98a6: undefined reference to \
`gr::digital::ofdm_frame_equalizer_vcvc::set_equalizer(boost::shared_ptr<gr::digital::ofdm_equalizer_base&gt;)'
                
/usr/bin/ld: libgnuradio-digital.so.v3.8.2.0-111-g6aad98a6: undefined reference to \
                `typeinfo for gr::digital::ofdm_frame_equalizer_vcvc'
collect2: error: ld returned 1 exit status
make[2]: *** [gr-digital/lib/CMakeFiles/digital_qa_header_buffer.cc.dir/build.make:104£ºgr-digital/lib/digital_qa_header_buffer.cc] \
error 1 make[1]: *** \
[CMakeFiles/Makefile2:8900£ºgr-digital/lib/CMakeFiles/digital_qa_header_buffer.cc.dir/all] \
error 2



&nbsp; &nbsp; I refer to the writing method of callback in other modules, but there \
are still errors, and I think it is not good to change the source code, which may \
cause many unknown errors, so I want to know whether there are other ways for me to \
change the modulation mode at any time? Or is it feasible to add the callback \
function directly? &nbsp; &nbsp; Any suggestion would be appreciated£¡
Bset Regrads,
linge93


[Attachment #3 (text/html)]

<meta http-equiv="Content-Type" content="text/html; charset=GB18030"><div><div>Hello \
everyone£¬</div><div>&nbsp; &nbsp; Merry Christmas to you all£¡</div><div>&nbsp; \
&nbsp; I'm sorry to bother you here£¬I would like to ask if there is any method or \
suggestion for me to control the modulation mode of "OFDM frame equalizer" module and \
"constellation decoder" through "QT GUI chooser" or other widgets. I know that they \
cannot be changed. Because they do not have "callback" function, they will be fixed \
once the flow graph runs. I try to write "callback" function myself, But my C + + \
level is really limited. There are some errors here. I don't know how to solve \
them.</div></div><div><br></div><div><div>/usr/bin/ld: \
libgnuradio-digital.so.v3.8.2.0-111-g6aad98a6: undefined reference to \
`gr::digital::ofdm_frame_equalizer_vcvc::set_equalizer(boost::shared_ptr&lt;gr::digital::ofdm_equalizer_base&gt;)'</div><div>/usr/bin/ld: \
libgnuradio-digital.so.v3.8.2.0-111-g6aad98a6: undefined reference to `typeinfo for \
gr::digital::ofdm_frame_equalizer_vcvc'</div><div>collect2: error: ld returned 1 exit \
status</div><div>make[2]: *** \
[gr-digital/lib/CMakeFiles/digital_qa_header_buffer.cc.dir/build.make:104£ºgr-digital/lib/digital_qa_header_buffer.cc] \
error 1</div><div>make[1]: *** \
[CMakeFiles/Makefile2:8900£ºgr-digital/lib/CMakeFiles/digital_qa_header_buffer.cc.dir/all] \
error 2</div><div><br></div></div><div>&nbsp; &nbsp; I refer to the writing method of \
callback in other modules, but there are still errors, and I think it is not good to \
change the source code, which may cause many unknown errors, so I want to know \
whether there are other ways for me to change the modulation mode at any time? Or is \
it feasible to add the callback function directly?</div><div>&nbsp; &nbsp; Any \
suggestion would be appreciated£¡</div><div>Bset \
Regrads,</div><div>linge93</div><div><br></div>



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