Re: [Discuss-gnuradio] GRC: Searching in wrongt places!

2009-10-12 Thread Josh Blum
Add this to the .bashrc export PYTHONPATH=/usr/local/lib64/python2.6/site-packages Make sure echo $PYTHONPATH gives you what you expect. And try to run python -c "from gnuradio import gr" and see if that does not fail. Its probably just an issue of setting the python path. If you figure it ou

Re: [Discuss-gnuradio] reducing the latency in tunnel.py

2009-10-12 Thread John Gilmore
> Another study you could look at is > ftp://ftp.cs.washington.edu/tr/2009/10/UW-CSE-09-10-02.PDF > > It gives another overview of where latency comes from, and shows how you can > get around some of it. > We were able to get turnaround times for our application below 300 us by > making a few simp

Re: [Discuss-gnuradio] block enqiry

2009-10-12 Thread Josh Blum
3 options i can think of 1) fir filter with decimation of 2, the taps should be [1] 2) deinterleave block with 2 outputs, use a null sink on one output 3) stream to streams with 2 outputs, use a null sink on one output _josh harshal jadhav wrote: Dear Eric, I have a small question regarding s

[Discuss-gnuradio] block enqiry

2009-10-12 Thread harshal jadhav
Dear Eric, I have a small question regarding samples acquired after signal source is implemented in grc. Is there a block in grc that has input as the samples from signal source output as only the even samples. This block should disregard alternate samples. Regards, Harshal _

[Discuss-gnuradio] detecting frequency with gr.goertzel_fc() in python

2009-10-12 Thread Casey Halverson
Hello, I have written a few static blocks in python, but i am still very much a beginner. I want to be able to detect frequency of a single tone in gnuradio. I have read that perhaps gr.goertzel_fc() is something I should use. However, the documentation is very vague and I am unsure how

Re: Re: [Discuss-gnuradio] reducing the latency in tunnel.py

2009-10-12 Thread Michael Buettner
> > Hi all, > > > > I would like to send a MAC layer control packet every 4 ms from computer A > > to computer B to tell B when to send data using USRP and GNU Radio. It is > > like TDMA and a frame is 4 ms. I am trying to do this work by modifying > > tunnel.py in the gnuradio-example folder. I r

[Discuss-gnuradio] QAM demodulator

2009-10-12 Thread udadidd
Hi I am working on a project which bypasses USRP by Audio and i need to implement it on QAM. but i found QAM demodulator missing in the GNUradio?? Kindly let me know if any one implement this already? I have less time to implement this project!! Thanks a ton Udaya -- View this message in context

Re: [Discuss-gnuradio] Problem with USRP2 continuous transmission at >10MHz

2009-10-12 Thread Firas Abbas
Hi, > From: Christoph Thein > > We are using Ubuntu 9.04 with the latest trunk version of gnuradio but don't > know enough about the OS realtime scheduling issue to explain it. Does > anybody > have more knowledge about ubuntu and realtime to explain this behaviour? > > Regards, > > Han

Re: [Discuss-gnuradio] Missing includes

2009-10-12 Thread Christian Meier
Sorry, wrong mailing list. Christian ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

[Discuss-gnuradio] Missing includes

2009-10-12 Thread Christian Meier
Hi, I am using GCC 4.4.1 and when I compile OpenBTS I need to adjust the folling few things: Sockets.h added #include Timeval.h added #include Logger.h added #include F16.h added #include SMSMessages.cpp added #include Transceiver.cpp (both 64 and 52 version) added #include USRPDevice

[Discuss-gnuradio] GRC: Searching in wrongt places!

2009-10-12 Thread Uwe Bonnes
Hello, running ./bootstrap ; ./configure; make; make check ; make install things get installed in /usr/local/lib and /usr/local/lib64 on my Opensuse-11 AMD64 machine: # find |grep gnuradio_swig_py_runtime |xargs ls -l -rw-r--r-- 1 root root1050 12. Okt 18:09 ./include/gnuradio/swig/gnuradio_

Re: [Discuss-gnuradio] gr_unpacked_to_packed_bb, modulation

2009-10-12 Thread Achilleas Anastasopoulos
In chunks-to-symbols you need a lookup table of one dimension, so D=1 and it should contain 4 entries. Achilleas ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio

Re: [Discuss-gnuradio] Problem with USRP2 continuous transmission at >10MHz

2009-10-12 Thread Christoph Thein
Hi Matt, thanks for the advice. We connected the serial port and couldn't observe the underrun message and we enabled the realtime scheduling but there was no improvement. Strangely enough after that the program only works without interrupts if it is started as su in a shell and if this shell

Re: [Discuss-gnuradio]: USRP Error when running GNU Radio on Mac OSX leopard

2009-10-12 Thread Michael Dickens
Hi Ying - I know from testing that 3.2.2 and the latest trunk work under 10.5 and libusb 0.1.12. We're working to get these working on 10.6 64-bit and libusb 1.0 series, but also keeping backwards compatibility with 10.5 and 10.6 32-bit as well as libusb 0.1.12. Is there a reason you need

[Discuss-gnuradio] gr_unpacked_to_packed_bb, modulation

2009-10-12 Thread Mattias Kjellsson
Hi list, I'm currently working on increasing my modulation from BPSK to (at first) QPSK using the c++ api. I have come across something I can't really figure out by myself. According to the api, gr_make_unpacked_to_packed_bb followed by gr_chunks_to_symbols_bc should take care of mapping bits to