Re: [Discuss-gnuradio] RTTY receiver

[Cinaed Simson]

On 6/10/19 9:05 PM, Kyeong Su Shin wrote:
> Hello Barry,
> 
> 
> Apparantly, the module has portability issues (will build on x86 but
> won't build on ARM) due to data type issues.

It builds find on my ARM 64 Odroid running jessie. Maybe it just doesn't
build on the raspberry pi 3. I'm running a slightly dated version of
gnuradio - 3.7.12git-295-ga0adcd33.

-- Cinaed

 To build the package, you
> will have to edit lib/baudot_encode_bb_impl.h:
> 
> 
> "static const char ascii_to_letters[128]" should become
> 
> 
> "static const *signed* char ascii_to_letters[128]",  and
> 
> 
> "static const char ascii_to_figures[128]" should become
> 
> 
> "static const *signed* char ascii_to_figures[128]".
> 
> 
> That will allow the module to build, although you may have to make
> further changes to get "Boudot Encode" block working correctly (I didn't
> test that; maybe I should make a pull request after that).
> 
> 
> Regards,
> 
> Kyeong Su Shin
> 
> 
> ------------------------------------------------------------------------
> *보낸 사람:* address@hidden <address@hidden>
> *보낸 날짜:* 2019년 6월 11일 화요일 오전 2:56:02
> *받는 사람:* Kyeong Su Shin
> *참조:* address@hidden
> *제목:* Re: [Discuss-gnuradio] RTTY receiver
>  
> Thank you for your response. Since this is my first issue on
> 'discuss-gnuradio', I am not sure how to get my reply to you posted in
> the thread. This looks like it might work. If not, please let me know
> what to do.
> 
> I did the "sudo ldconfig" and it got rid of the "include could not find
> load file: GrPython", but not the other problem, so I decided to start
> from scratch.
> 
> I have
> Raspberry Pi 3 B+
> Rasbian Linux (v2)
> 
> I deleted the folder 'gr-radioteletype'
> download zip from https://github.com/bitglue/gr-radioteletype
> <https://github.com/bitglue/gr-radioteletype>
>       
> GitHub - bitglue/gr-radioteletype: GNU Radio blocks for RTTY and PSK31
> <https://github.com/bitglue/gr-radioteletype>
> github.com
> GNU Radio blocks for RTTY and PSK31. Contribute to
> bitglue/gr-radioteletype development by creating an account on GitHub.
> 
> 
> extract zip to /home/pi
> cd ~/gr-radioteletype-master
> mkdir build
> cd build
> cmake ../
> make
> [  5%] Building CXX object
> lib/CMakeFiles/gnuradio-radioteletype.dir/async_word_extractor_bb_impl.cc.o
> [ 10%] Building CXX object
> lib/CMakeFiles/gnuradio-radioteletype.dir/baudot_decode_bb_impl.cc.o
> [ 15%] Building CXX object
> lib/CMakeFiles/gnuradio-radioteletype.dir/baudot_encode_bb_impl.cc.o
> In file included from
> /home/pi/gr-radioteletype-master/lib/baudot_encode_bb_impl.cc:26:0:
> /home/pi/gr-radioteletype-master/lib/baudot_encode_bb_impl.h:65:5:
> error: narrowing conversion of ‘-1’ from ‘int’ to ‘char’ inside { }
> [-Wnarrowing]
>       };
>       ^
> /home/pi/gr-radioteletype-master/lib/baudot_encode_bb_impl.h:100:5:
> error: narrowing conversion of ‘-1’ from ‘int’ to ‘char’ inside { }
> [-Wnarrowing]
>       };
>       ^
> /home/pi/gr-radioteletype-master/lib/baudot_encode_bb_impl.h:100:5:
> error: narrowing conversion of ‘-1’ from ‘int’ to ‘char’ inside { }
> [-Wnarrowing]
> lib/CMakeFiles/gnuradio-radioteletype.dir/build.make:110: recipe for
> target
> 'lib/CMakeFiles/gnuradio-radioteletype.dir/baudot_encode_bb_impl.cc.o'
> failed
> make[2]: ***
> [lib/CMakeFiles/gnuradio-radioteletype.dir/baudot_encode_bb_impl.cc.o]
> Error 1
> CMakeFiles/Makefile2:137: recipe for target
> 'lib/CMakeFiles/gnuradio-radioteletype.dir/all' failed
> make[1]: *** [lib/CMakeFiles/gnuradio-radioteletype.dir/all] Error 2
> Makefile:138: recipe for target 'all' failed
> make: *** [all] Error 2
> 
> Both of the error messages were repeated *many* times. I looked at the
> code for baudot_encode_bb_impl.h, but could not see any problems with
> it.
> 
> I appreciate any help you can give.
> 
> Best wishes,
> 
> Barry
> 
> On 2019-06-10 00:29, Kyeong Su Shin wrote:
>> Hello Barry:
>> 
>> Did you try "sudo ldconfig"?
>> 
>> If so, could you provide us the relevant software versions (GNU Radio
>> version, Linux distro type, etc) and the full steps that you took to
>> build the module? gr-radioteletype from "
>> https://github.com/bitglue/gr-radioteletype/ " builds and runs fine on
>> my machine (tm).
>> 
>> 
>> Regards,
>> 
>> Kyeong Su Shin
>> 
>> 
>> ________________________________
>> 보낸 사람: address@hidden <address@hidden> 대신 Discuss-gnuradio
>> <discuss-gnuradio-bounces+ksshin=address@hidden>
>> 보낸 날짜: 2019년 6월 10일 월요일 오전 5:08:32
>> 받는 사람: address@hidden
>> 제목: [Discuss-gnuradio] RTTY receiver
>> 
>> I have been a real-time programmer for over 50 years, and a ham for 66
>> years, but am new to Gnu Radio. My project is to build a complete RTTY
>> receiver with SDR. In looking about for any applicable code, I found
>> gr-radioteletype, but seem to be missing some of the pieces. Using the
>> cmake, make, and make install steps I was able to get the flow graph to
>> work, but when I try to execute it I get:
>> 
>> "from radioteletype.demodulators import rtty_demod_cb
>>    No module named radioteletype.demodulators"
>> and
>> "include could not find load file: GrPython"
>> 
>> What am I missing? I have searched for GrPython and not found any
>> mention of it.
>> 
>> As an alternative, I have the RTTY signal demodulated into a bit 
>> stream,
>> and I have Python code to extract RTTY characters from a bit stream, 
>> but
>> haven't figured out how to plug the two together.
>> 
>> Any help on either issue would be appreciated greatly.
>> 
>> Thanks, Barry KV4FV
>> 
>> _______________________________________________
>> Discuss-gnuradio mailing list
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>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> 
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