[Discuss-gnuradio] Tracking down error messages
I am only a couple days into this, with a project that has several heir blocks. I just started getting a message "port number 0 exceeds max of (none)" I've looked through my files, and I don't see any unconnected ports. I don't see anything that indicates even which file or heir block is causing the problem. How can I track this down? -- K1FZY (WA4TPW) SK 9/29/37-4/13/15 ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Fwd: OOT how to write my own custom header format
Hi i wrote a child class by hand i managed to compile successfully using the commands below : cmake .. make gr_modtool makexml header_format_cc1101 (no suitable file found because there is no _impl.cc file) sudo make install sudo ldconfig but my module is not detected in grc Param - Value(value): Value "f4gsw.header_format_cc1101(digital.packet_utils.default_access_code, 3, Const_PLD.bits_per_symbol())" cannot be evaluated: name 'f4gsw' is not defined thanks bob -- Forwarded message - From: Alban Meffre Date: sam. 19 janv. 2019 à 22:04 Subject: OOT how to write my own custom header format To: GNURadio Discussion List hi all i'm trying to derive the header_format_base with no success i created a new module with modtool and the "no block" profile i copied and modified the "header_format_default" sources but i get swig error telling me that sptr is not defined did someone ever managed to write its own header format with modtool ? is modtool the way to go ? which modtool profile do i need to use ? do you have some hints for doing so ? i can read and write (kind of) some C++ code but i do not know anything about SWIG. that is black magic for me, so please i would be glad if someone explain me step by step ;) thank you all bob -- Alban MEFFRE F4GSW ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] OOT how to write my own custom header format
hi all i'm trying to derive the header_format_base with no success i created a new module with modtool and the "no block" profile i copied and modified the "header_format_default" sources but i get swig error telling me that sptr is not defined did someone ever managed to write its own header format with modtool ? is modtool the way to go ? which modtool profile do i need to use ? do you have some hints for doing so ? i can read and write (kind of) some C++ code but i do not know anything about SWIG. that is black magic for me, so please i would be glad if someone explain me step by step ;) thank you all bob ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] CC1101 GFSK packet decode with variable length
Hi i spent the past few weeks studying the gnuradio blocks c++ source codes, the doxygen documentation, and the provided examples (specially packet_tx and packet_rx ones) and eventually i managed to understand how packetized transmission, tags and messages work it was easer than i thought initially even if the learning curve is very steep many thanks for your support now i plan to learn how to write my own blocks based on the existing, using gr_modtool i need to write my own custom header formats bob Le lun. 31 déc. 2018 à 01:28, Julian Arnold a écrit : > Hey Bob, > > there is plenty of documentation on this topic you can check out under > [1,2]. > Especially, the Header Payload Demuxer (HPD) [3] should be worth a look > if you are dealing with packetized variable length data. > > Hope those pointer can get you started. If you have further questions > after going through those pages, let me know. > > Cheers, > Julian > > [1] https://www.gnuradio.org/doc/doxygen/page_packet_data.html > [2] https://www.gnuradio.org/doc/doxygen/page_packet_comms.html > [3] > > https://www.gnuradio.org/doc/doxygen/classgr_1_1digital_1_1header__payload__demux.html > > On 31.12.18 01:00, Alban Meffre wrote: > > Hi > > I would like to decode a simple GFSK packet > > > > here is the packet structure : > > preamble : AAh x 4 > > sync word : D391h > > length byte : 1 byte > > payload : 1 to 64 bytes > > CRC : 2 bytes > > > > TX : arduino + CC1101 module, 2GFSK, 100kbps, excursion 50kHz, carrier > > 433 MHz > > RX : RTLSDR > > > > until now i was able to demodulate the signal and add a "sync" tag using > > the correlate access code. > > > > my goal is to extract the payload and send it to a file or a socket. > > is there a simple way to do that without writing my own block ? > > > > i can't go further, because i do not manage to find the info i need > > i do not know where to start : stream, tagged stream, PDU, messages, > etc.. > > i do not figure out how to use these tag for variable length. nothing > > clear in the doc > > > > i'd be glad if someone helps me > > best regards > > bob > > > > > > > > ___ > > Discuss-gnuradio mailing list > > Discuss-gnuradio@gnu.org > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > -- Alban MEFFRE F4GSW ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
