[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Discuss-gnuradio] RTTY receiver

From: barry
Subject: Re: [Discuss-gnuradio] RTTY receiver
Date: Mon, 10 Jun 2019 13:56:02 -0400
User-agent: Roundcube Webmail/1.3.8

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
extract zip to /home/pi
cd ~/gr-radioteletype-master
mkdir build
cd build
cmake ../
[ 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,


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).


Kyeong Su Shin

보낸 사람: address@hidden <address@hidden> 대신 Discuss-gnuradio
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"
"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

reply via email to

[Prev in Thread] Current Thread [Next in Thread]