[Discuss-gnuradio] Fwd: regarding your paper
hi ,
i have gone through bastin bloessl's code for ieee_802_15_4. i installed
it in my ubuntu 12.04 having gnuradio v3.7 . it installed and i got the
following error when i was trying to run the flowgraph.
Traceback (most recent call last):
File /home/cps/.grc_gnuradio/ieee802_15_4_phy.py, line 16, in module
import ieee802_15_4
File /usr/local/lib/python2.7/dist-packages/ieee802_15_4/__init__.py,
line 17, in module
from ieee802_15_4_swig import *
File
/usr/local/lib/python2.7/dist-packages/ieee802_15_4/ieee802_15_4_swig.py,
line 26, in module
_ieee802_15_4_swig = swig_import_helper()
File
/usr/local/lib/python2.7/dist-packages/ieee802_15_4/ieee802_15_4_swig.py,
line 22, in swig_import_helper
_mod = imp.load_module('_ieee802_15_4_swig', fp, pathname, description)
ImportError: /usr/local/lib/libgnuradio-ieee802_15_4.so: undefined symbol:
_ZN2gr6blocks12count_bits32Ej
i have no idea what it means. is it the problem with count_bits block.
looking forward for the reply.
thanks,
lingeswar
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Re: [Discuss-gnuradio] Fwd: regarding your paper
Hi Lingeswar,
/usr/local/lib/python2.7/dist-packages/ieee802_15_4/ieee802_15_4_swig.py,
line 22, in swig_import_helper
_mod = imp.load_module('_ieee802_15_4_swig', fp, pathname,
description)
ImportError: /usr/local/lib/libgnuradio-ieee802_15_4.so: undefined
symbol: _ZN2gr6blocks12count_bits32Ej
I guess libgnuradio-ieee802_15_4.so is not linked against
libgnuradio-blocks.so. You can check that with
ldd libgnuradio-ieee802_15_4.so
Are you using the most recent version of 15.4? Linking should work
latest since this commit
https://github.com/bastibl/gr-ieee802-15-4/commit/a586256ad5e3fe1cf8c998a68a7276adf6e2d691
Best,
Bastian
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Re: [Discuss-gnuradio] CDMA-UMTS protocol implementation with USRP1
On Fri, May 9, 2014 at 7:20 PM, Marcus Müller marcus.muel...@ettus.comwrote: Hello Usman, going from deploying an already existing GSM basestation software to implementing a complete standard is a huge step. Also, USRP1 is almost certainly not the device I'd chose for that task -- in can shuffle a maximum of 8MS/s over USB, and you need 5MS/s for up- and downlink each for UMTS-CDMA. From your choice of mailing list, I'd presume you want to use GNU Radio. So get your communication engineering textbooks ready, refresh what you know about digital baseband signal processing, and learn how to use and extend GNU Radio software on the gnuradio.org website, especially on the tutorials. Greetings, Marcus But, if you want a start at the phy layer using CDMA, Achilleas' gr-cdma might be a good place to start: https://github.com/anastas/gr-cdma Tom On Fri, May 9, 2014 at 9:20 PM, Usman Arshad m.usman...@gmail.com wrote: Hello list, I am planning to implement CDMA-UMTS protocol with USRP 1 and GNU Radio. I've first established OpenBTS setup with USRP1 and OpenBTS 2.8. Now I want to implement CDMA-UMTS in the same way as OpenBTS to establish a CDMA mobile network. Can anyone guide me about starting point like what software packages I need and any idea how to implement it. Thanks in advance. -- *Usman Arshad* *Electrical (Telecom) Engineering* *National University of Sciences and Technology (NUST)* ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] change value of variable in GRC when a message is received
On Thu, May 8, 2014 at 1:45 PM, Achilleas Anastasopoulos anas...@umich.eduwrote: Dan, when I said messages I meant gnuradio messages (http://gnuradio.org/doc/doxygen/page_msg_passing.html) So my problem is not with any remote messaging issue. Apologies for not making this more clear. best Achilleas Achilleas, You mean you want to change the value of a GRC Variable (as in an actual [Variable]: Variable block on the canvas)? If so, no, we have nothing architected to enable that. I suppose you could try to hack together something using the Function Probe block. Tom On Thu, May 8, 2014 at 1:29 PM, Dan CaJacob dan.caja...@gmail.com wrote: I'm not sure it's what you want, but the RPC Server block lets you change the value of any GR variable in a running FG remotely. There also seems to be some work ongoing t bring zeromq endpoints into GR. Very Respectfully, Dan CaJacob On Thu, May 8, 2014 at 1:07 PM, Achilleas Anastasopoulos anas...@umich.edu wrote: Is there a simple way for a GRC block to asynchronously change the value of a GRC variable when the block receives a specific message? thanks Achilleas ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] py_msg_queue__delete_head
On Sat, May 10, 2014 at 10:22 PM, chenjian josnche...@gmail.com wrote:
Hi, All
I check the code in GNURadio 3.7.3,
gnuradio-3.7.3/gnuradio-runtime/swig/msg_queue.i
the code:
83 #ifdef SWIGPYTHON
84 %inline %{
85 gr::message::sptr py_msg_queue__delete_head(gr::msg_queue::sptr q) {
86 gr::message::sptr msg;
87 GR_PYTHON_BLOCKING_CODE(
88 msg = q-delete_head();
89 )
90 return msg;
91 }
92
93 void py_msg_queue__insert_tail(gr::msg_queue::sptr q,
gr::message::sptr msg) {
94 GR_PYTHON_BLOCKING_CODE(
95 q-insert_tail(msg);
96 )
97 }
98 %}
output is located in gnuradio-runtime/swig/runtime_swig.py
the output is like:
3791 def py_msg_queue__delete_head(*args, **kwargs):
3792 py_msg_queue__delete_head(sptr q) - sptr
3793 return _runtime_swig.py_msg_queue__delete_head(*args, **kwargs)
3794
3795 def py_msg_queue__insert_tail(*args, **kwargs):
3796 py_msg_queue__insert_tail(sptr q, sptr msg)
3797 return _runtime_swig.py_msg_queue__insert_tail(*args, **kwargs)
*Of course, the above in the gnuradio is work well.*
I could not understand these swig output. so I write a small .i file to
test this
1 /* -*- c -*- */
2 // swig2.0 -python *.i
3 //swig2.0 -python -v -c++ *.i
4
5 %module(directors=1) util_swig
6
7 #ifdef SWIGPYTHON
8
9
10 %inline %{
11 int fun1(int q) {
12 return q;
13 }
14 %}
15
16 #endif
but there is one more line (see line 73 ) in the output file *.py
71 def fun1(*args):
72 return _util_swig.fun1(*args)
73 fun1 = _util_swig.fun1
74 # This file is compatible with both classic and new-style classes.
Is it some configuration in other place lead the output to be different
from the standard swig command ?
Thanks Best Regards.
We are not meant to understand the workings of SWIG...
But seriously, this is a SWIG question and not a GNU Radio question. Best
ask the SWIG developers.
Tom
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Re: [Discuss-gnuradio] Question on incorporate different constellation indexing in gr-digital constellation objects
On Sat, May 3, 2014 at 2:44 AM, Zhe Feng feng...@umich.edu wrote: Dear all, I have a question related to the constellation objects in gr-digital. After checking the constellation.cc, I found the constellation of 8PSK and QPSK class are all Grey coded. Now I want to use a 8PSK constellation with natural mapping. I know I can just modify the constellation indexing of the Grey mapped 8PSK class. But I don't want to change the 8psk class that gnuradio provided or to make a natural mapped 8psk class by copying the 8psk class and just modifying the indexing. Is there any clean way to get the natural mapped 8psk class I wanted? Thanks! Best, Zhe Have a read of: http://gnuradio.org/doc/doxygen/page_digital.html That will explain a bit more about the constellation objects. You are perfectly safe setting up your own Constellation Object with whatever constellation and symbol mapping you want. Tom ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] How to update the value of a variable by reading message in grc?
On Sat, May 3, 2014 at 2:31 AM, Zhe Feng feng...@umich.edu wrote:
Hi all,
I'm working on a system with packet headers. I want to use the message
decoded by the Packet Header Parser to update a variable.
I knew the message can be stored in a message debug block, and be retrieved
by using the get_message function. So I can define a get function to read
the message in the flowgraph class, and call this get function in main
and
set this value to the variable I want to update. For example, I wrote a get
function like this:
def get_type(self):
self.num_msg = self.msg_debug.num_messages()
self.msg =
pmt.to_python(self.msg_debug.get_message(self.num_msg-1))
self.type = self.msg.get('type_tag')
return self.type
and call this get function in main
type = tb.get_type()
tb.set_variable(type)
But as far as I know, the get function can only be called once in main,
so
the variable can only be updated once. Since we want to update the variable
every time we decoded a message, I'm wondering is there a way in the grc to
change a variable
by the message?
I actually have a idea in mind. Like the Header/Payload Demux block used in
rx_ofdm, I can write a block that taking message as input, reading the PMT
dictionary to get the value we want, and output the value. Then the desired
variable can be updated by connecting the output of my designed block to a
function probe.
But this function probe only probes the port in a certain frequency, i.e.
it
can not catch all the updates. So I'm wondering if there is a way to update
a predefined variable through a block every time.
Any suggestions will be valued.
Thanks!
Best,
Zhe
I think your best option is to create your own block for handling the
messages and not use the Message Debug block. As that block says, it's
designed to help us debug message passing applications; it's not meant to
be actually used as part of a real application.
Tom
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[Discuss-gnuradio] OFDM transceiver in USRP E 110
Hi, I'm working in a project which deals with implementation of an OFDM transceiver(without any standard the purpose is to transmit et receive any kind of datas) with gnuradio in USRP E 110. Any idea plz to get started. Thanks a lot :) Best regards, Wafa ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Announcing NEWSDR in Boston on Friday June 6
* * Fourth-Annual * * * * New England Workshop on Software-Defined Radio* * NEWSDR 2014 * * * * Friday, 6 June 2014, 8:30 AM - 5:30 PM* * Boston University, Photonics Center, 9th Floor* *Boston, MA, USA* * * * http://www.sdr-boston.org/ * * INVITATION TO PARTICIPATE You are cordially invited to the 2014 New England Workshop on Software Defined Radio (NEWSDR 2014), which is the fourth installment of an annual series of workshops organized by the Boston SDR User Group (SDR-Boston). This year NEWSDR will be held on the 9th Floor of the Photonics Center of Boston University on Friday 6 June 2014. NEWSDR 2014 also features two technical oral presentation sessions, several technical poster presentation sessions, several hardware demonstrations and SDR test-beds, and an industry panel discussion, all focusing on the latest advances in software-defined radio and/or cognitive radio technology. Please forward this message to your colleagues that may be interested in NEWSDR'14. We hope to see you there! KEYNOTE SPEAKER: * Professor Jeffrey Reed, Virginia Tech INVITED SPEAKERS: * Mr. Marcus Leech, Science Radio Laboratories / Shirleys Bay Radio Astronomy Consortium * Dr. Zoran Zvonar, MediaTek Wireless Inc. SPONSORS: * The MathWorks Inc. * National Instruments / Ettus Research * Analog Devices Inc. * MediaTek Wireless Inc. * Boston University, Center for Information and Systems Engineering ORAL/POSTER PRESENTATIONS: * Oral and poster presentations are now being solicited * See link at the bottom of this email to submit your abstract online! REGISTRATION: * Free with advanced online pre-registration (lunch and parking included) * Space is limited, so register soon! * See link at the bottom of this email to register online. ADDITIONAL INFORMATION: The latest information of this event can be found at the following website: http://www.sdr-boston.org/ (under Workshops NEWSDR 2014). REGISTRATION LINK: https://docs.google.com/forms/d/14e4GfEDrOaJJ0OLFWwZU4B79aR_Oi2NWkrXETnm1ijY/viewform ORAL/POSTER ABSTRACT SUBMISSION LINK: https://docs.google.com/forms/d/1ScEEjxvik8qh0wnMKydudjnCSJI2UBkNhvKeGWnXuYU/viewform ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] OFDM transceiver in USRP E 110
thanks a lot for your quick response . In fact I want to implement an application :OFDM transceiver with gnuradio and what version of gnuradio shall I use in order to have blocks which help me to implement OFDM transceiver channel, Best regards 2014-05-11 21:02 GMT+02:00 Mostafa Alizadeh m.alizade...@gmail.com: Hi Wafa, I don't know what you really want but I first prefer you to have a glimpse at the : http://gnuradio.org/doc/doxygen/page_ofdm.html which designs an OFDM transceiver. best, On Sun, May 11, 2014 at 10:29 PM, Wafa Elhajhmida wafa.elhaj.hm...@gmail.com wrote: Hi, I'm working in a project which deals with implementation of an OFDM transceiver(without any standard the purpose is to transmit et receive any kind of datas) with gnuradio in USRP E 110. Any idea plz to get started. Thanks a lot :) Best regards, Wafa ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] OFDM transceiver in USRP E 110
plz did you know an open source project to get inspired of it in order to receive/ transmit datas from USRP E110 2014-05-11 21:09 GMT+02:00 Wafa Elhajhmida wafa.elhaj.hm...@gmail.com: thanks a lot for your quick response . In fact I want to implement an application :OFDM transceiver with gnuradio and what version of gnuradio shall I use in order to have blocks which help me to implement OFDM transceiver channel, Best regards 2014-05-11 21:02 GMT+02:00 Mostafa Alizadeh m.alizade...@gmail.com: Hi Wafa, I don't know what you really want but I first prefer you to have a glimpse at the : http://gnuradio.org/doc/doxygen/page_ofdm.html which designs an OFDM transceiver. best, On Sun, May 11, 2014 at 10:29 PM, Wafa Elhajhmida wafa.elhaj.hm...@gmail.com wrote: Hi, I'm working in a project which deals with implementation of an OFDM transceiver(without any standard the purpose is to transmit et receive any kind of datas) with gnuradio in USRP E 110. Any idea plz to get started. Thanks a lot :) Best regards, Wafa ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] OFDM transceiver in USRP E 110
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi Wafa, the OFDM Code in GR is a very good start for data transmission. Also in [1] in the examples folder you can find a mimo_ofdm_transceiver.grc. It is a transceiver with which it is possible to establish an IP connection between to computers. It is build on top of the GR OFDM example and also uses gr-mac. happy hacking Johannes [1] https://github.com/jdemel/gr-misc On 11.05.2014 21:33, Wafa Elhajhmida wrote: plz did you know an open source project to get inspired of it in order to receive/ transmit datas from USRP E110 2014-05-11 21:09 GMT+02:00 Wafa Elhajhmida wafa.elhaj.hm...@gmail.com mailto:wafa.elhaj.hm...@gmail.com: thanks a lot for your quick response . In fact I want to implement an application :OFDM transceiver with gnuradio and what version of gnuradio shall I use in order to have blocks which help me to implement OFDM transceiver channel, Best regards 2014-05-11 21:02 GMT+02:00 Mostafa Alizadeh m.alizade...@gmail.com mailto:m.alizade...@gmail.com: Hi Wafa, I don't know what you really want but I first prefer you to have a glimpse at the : http://gnuradio.org/doc/doxygen/page_ofdm.html which designs an OFDM transceiver. best, On Sun, May 11, 2014 at 10:29 PM, Wafa Elhajhmida wafa.elhaj.hm...@gmail.com mailto:wafa.elhaj.hm...@gmail.com wrote: Hi, I'm working in a project which deals with implementation of an OFDM transceiver(without any standard the purpose is to transmit et receive any kind of datas) with gnuradio in USRP E 110. Any idea plz to get started. Thanks a lot :) Best regards, Wafa ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org mailto:Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio -BEGIN PGP SIGNATURE- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBAgAGBQJTb9ZTAAoJEO7fmkDsqywMMA8QAKNxbgJfBsY1L6OfNtXFxPyQ ZqAkWKsjK8ff+SgmeIwylIb/BDPyeFs7eLHdirh1KOqAuY69vEJuZ3qm/57kZD6H WOIrODjvG5inb/OAMaCkjGXKFhV02mqzBVYtiFz0LiDTOvmQ6axKZSiyfN+jqx1z hhxbYHoa4ceEivfvLB7VEoTvKDM2jbyZMzHJE7XRLvckPFkAyATGdJls1/jwK4vp kuMwGo5T2shLddKIKu2/6vseVHe4MVf7IksK2Pf6YyfA5RzTNa+T5BMpFZ1jD6t/ qwSiTcgPq3eUOzrr91Big3ySdGFLzs/pE2ajtNKlOdSLYyg6GG6xxarTC9ZT0wcz 5wHpoHopovBMmYiKXkS5Vm1yVoMJB0r3vTMHMK4Vbbw5nSBtdeZXoPLJ+zHI9I8e uvk2lFeXHRROL3a4a9By5ZZqpzQTt1lEpki4vadNAo/xTSgYXtkGuJIE+GwHEkh1 IUke/P4vi42CXjzgZ56cIvPWvaQjqQWqwlSqGzM+bxERWyVyz40w0BM/dVl9tH+s eRiJOZYN4njdxMTGs4L5xLBXAsmkWo8yyVuqS9t/j1JNU/XE7djVfVvI3YfdFYlr KYaxCf4acH4Z26BEAgpLR0zWHIjohHeyh2RnZe5TLTSBqO/RPyl4hHadjMj+Y7Qv VGFAZk8B+BF0gBux4cLg =TPIV -END PGP SIGNATURE- ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] adding channel effects to an input in GNURADIO
Hi all, (Ubuntu 13.04, GNURADIO 3.7) I have a question regarding the channel models. As far I know the channel function must be convolved (convolution) with the input to get the output like this: out = conv(in,channel) In GNURADIO I can not find this convolution or any filter to do that. I am looking inside this folder: gnuradio/gr-channels/lib. How is this process done in GNURADIO? -- NE___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Simple grc GUI question...
Hi, I need to align the audio switching network of my ham radio repeater db0fue, and it would be nice to have some GRC GUI element that allows me to switch between two predefined RF frequencies. Never worked with this GUI stuff, and I guess finding it out myself probably would take too long :) Just need to set a 1000 Hz NFM test tone generator that can be switched between 145.0375 and 431.025 MHz with touching a button on my tablet PC screen...if one could drop the name of the GUI element that could do the job, the rest should be simple enough :) I am using latest gnuradio 3.7.something (built from source) and Kubuntu 13.10. Sorry for the dumb looking question, but I would love to get this up and running during lunch break, and drive to the repeater with a rucksack full of RF gear this evening and get the deviation issue fixed, before people start complaining. Ralph. -- Ralph A. Schmid Mondstr. 10 90762 Fürth +49-171-3631223 ra...@schmid.xxx http://www.bclog.de/ ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
