RE: [Discuss-gnuradio] mingw install help
Thanks. There is no gcc in my bin directory (there is a g++ thou). I downloaded the gcc fles (core and gcc) and uncompressed them in the minigw directory. I am sure I am missing something simple. kevin -Original Message- From: Don Ward [mailto:[EMAIL PROTECTED] Sent: Thursday, October 25, 2007 4:33 PM To: Kevin Rudd (Contractor); discuss-gnuradio@gnu.org Subject: Re: [Discuss-gnuradio] mingw install help Kevin Rudd (Contractor) [EMAIL PROTECTED] wrote: I am following the directions for installing GNURadio with minGW on XP found here... http://gnuradio.org/trac/wiki/MingwInstallMain When I get to installing FFTW, I try compiling it (from MSYS prompt) and I get the following error... No acceptable C compiler found in $PATH Quick internet search indicates that GCC was not installed. Do I need to do more than just unpack the gcc files into the mingw directory? Any other ideas? ls /mingw/bin should show that gcc.exe is in /mingw/bin and echo $PATH should list /mingw/bin as being in the search path. If both of these are true, then which gcc should return /mingw/bin/gcc and the FFTW install should work. If not, you need to figure out if gcc is missing or if the shell just can't find it. Let us know what you find, because sometimes things change and the instructions stop working and need to be updated. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] mingw install help
Hello Everyone, I am following the directions for installing GNURadio with minGW on XP found here... http://gnuradio.org/trac/wiki/MingwInstallMain When I get to installing FFTW, I try compiling it (from MSYS prompt) and I get the following error... No acceptable C compiler found in $PATH Quick internet search indicates that GCC was not installed. Do I need to do more than just unpack the gcc files into the mingw directory? Any other ideas? Thanks for the help. Kevin ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Vista, Xp, or Linux?
Hello all, I just got my new notebook computer with Vista pre-installed. I have a couple questions. 1) Has anyone had any luck installing GNURadio under Vista using Cygwin or MinGW method? 2) Are there any performance issues running GNURadio under windows (XP or Vista) as opposed to Linux? Thanks! Kevin ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] GNU Radio TCP and MATLAB
Hello again, I have decided to try the GNURadio - TCP - MATLAB route. I am running into a few problems. First, I downloaded Jamie Cooley's GNURadio TCP Socket code here... http://alumni.media.mit.edu/~jcooley/gr_experiments/experiments/gr_socket.ht m Then I downloaded a free matlab TCP toolbox as David suggested. http://www.mathworks.nl/matlabcentral/fileexchange/loadFile.do?objectId=345; objectType=file I can set up the connection and send data to matlab, but the data I receive is all messed up. I think the format is off. For those who have done this, what data type are you sending and how are you receiving it? Currently, I am just sending a complex sine wave. If I sink it to a file, I can open it in matlab with no problem. But when I send it via TCP, I get garbage. My matlab commands are basically... Con = pnet(sock,'tcplisten'); data = pnet(con, 'read', 1000, 'SINGLE'); cdata = data(1:2:end)+j*data(2:2:end); plot(log(abs(fft(cdata Is 'SINGLE' the correct type to use? (I tried all the others and I still get gargabe). Thanks for the help, Kevin ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Re: FRS with the FLEX400
Hello again, Thanks for those that emailed me directly with my last request. I have been able to get my transmit code to tune now, but it is still not working. All I am trying to do is fm modulate a sine wave and transmit it at a certain frequency. I have hooked up a vector signal analyzer and I see no output from the USRP. Could I have a dysfunctional daughter card? My newer code is below. Any help would be appreciated. Kevin Rudd Naval Research Laboratory myfm.py -- #!/usr/bin/env python from gnuradio import gr, eng_notation from gnuradio import usrp from gnuradio import audio from gnuradio import blks from gnuradio.eng_option import eng_option import usrp_dbid import sys class my_graph(gr.flow_graph): def __init__(self): gr.flow_graph.__init__ (self) self.u = usrp.sink_c () # the USRP sink (consumes samples) # Setup Constants self.dac_rate = self.u.dac_rate()# 128 MS/s self.usrp_interp = 400 self.u.set_interp_rate(self.usrp_interp) self.usrp_rate = self.dac_rate / self.usrp_interp# 320 kS/s self.sw_interp = 40 self.audio_rate = self.usrp_rate / self.sw_interp# 8 kS/s # Determine the daughterboard subdevice we're using tx_subdev_spec = usrp.pick_tx_subdevice(self.u) m = usrp.determine_tx_mux_value(self.u, tx_subdev_spec) self.u.set_mux(m) self.subdev = usrp.selected_subdev(self.u, tx_subdev_spec) print Using TX d'board %s % (self.subdev.side_and_name(),) # make blocks and connect them src0 = gr.sig_source_f (self.audio_rate, gr.GR_SIN_WAVE, 350, 1) fmtx = blks.nbfm_tx (self, self.audio_rate, self.usrp_rate, max_dev=2.5e3, tau=75e-6) gain = gr.multiply_const_cc (4000.0 ); self.connect (src0,fmtx,gain,self.u) # set gain, tune, and turn on transmitter self.subdev.set_gain(self.subdev.gain_range()[1]) #max Tx gain self.u.tune(self.subdev._which, self.subdev, 462562500) #self.set_freq(462562500) self.subdev.set_enable(True)# enable transmitter if __name__ == '__main__': try: my_graph().run() except KeyboardInterrupt: pass ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] FRS with the FLEX400 (newbie questions)
Hello Again, I am starting to play with the GNU Radio code some and wanted to start by capturing audio from a handheld radio (FRS fm modulation). I am having some problems and can't seem to figure out why it is not working. 1) receiving. Why does the usrp nfm sample programs not work for FRS well? I type... python ./usrrp_nbfm_rcv.py -f462.5625 When I key the radio, I see the large spike at the carrier frequency (+80db). But after demod, the max amplitude is -80 to -60 db. If I turn my volume way up, I can hear the audio, but barely. 2) transmitting. I also tried modulating a single sine wave tone and transmitting it so that I can hear it on the radio. For some reason my tune function returns a false. Does this mean it did not tune to the correct frequency? What could be causing that? My code is below if it helps. Thanks! Kevin Rudd #!/usr/bin/env python from gnuradio import gr, eng_notation from gnuradio import usrp from gnuradio import audio from gnuradio import blks from gnuradio.eng_option import eng_option import usrp_dbid import sys class my_graph(gr.flow_graph): def __init__(self): gr.flow_graph.__init__ (self) self.u = usrp.sink_c () # the USRP sink (consumes samples) self.dac_rate = self.u.dac_rate()# 128 MS/s self.usrp_interp = 400 self.u.set_interp_rate(self.usrp_interp) self.usrp_rate = self.dac_rate / self.usrp_interp# 320 kS/s self.sw_interp = 10 self.audio_rate = self.usrp_rate / self.sw_interp# 32 kS/s # determine the daughterboard subdevice we're using tx_subdev_spec = usrp.pick_tx_subdevice(self.u) m = usrp.determine_tx_mux_value(self.u, tx_subdev_spec) self.u.set_mux(m) self.subdev = usrp.selected_subdev(self.u, tx_subdev_spec) print Using TX d'board %s % (self.subdev.side_and_name(),) m = usrp.determine_tx_mux_value(self.u, tx_subdev_spec) self.subdev.set_gain(self.subdev.gain_range()[1])# set max Tx gain ttarget_freq = 462562500 #self.set_freq(ttarget_freq) r = self.u.tune(self.subdev._which, self.subdev, ttarget_freq) print r # this prints false! self.subdev.set_enable(True) # enable transmitter src0 = gr.sig_source_f (self.audio_rate, gr.GR_SIN_WAVE, 350, 1) fmtx = blks.nbfm_tx (self, self.audio_rate, self.usrp_rate, max_dev=5e3, tau=75e-6) gain = gr.multiply_const_cc (4.0) # not sure about this self.connect (src0, fmtx) self.connect (fmtx, gain) self.connect (gain, self.u) if __name__ == '__main__': try: my_graph().run() except KeyboardInterrupt: pass ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] MATLAB/Windows and the USRP
Hello all, I just received my USRP and I have successfully installed GNURadio on my Linux box. I am just starting to dabble with the code a bit. I am very much a Windows/MATLAB developer, so I think I could be far more productive if I could just stream the baseband waveforms to and from the USRP from MATLAB. I see on Ettus's site that some are working on a MATLAB interface. I would like to contribute to this effort. Does anyone have a good starting point? Are there any windows drivers (dll's or source)? Btw, I tried installing the binaries from www.olifantasia.com and the code did not like my USRP revision?? I have also searched the list and tried emailing people directly, but without any responses. I would appreciate any help or suggestions. Thanks, Kevin (p.s. I apologize if this gets double posted. I had trouble using a third party forum) ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
