[Discuss-gnuradio] Excellent blog about SDR development...
Found this via a Xilinx Facebook posting. I don't know if this young man is on this list but if you are I salute you. This is impressive. He uses GNU Radio. http://electronics.kitchen/misc/freesrp/ Your notes about the Xilinx tools made this old guy feel much better about struggling to learn the tools. The notes about board design were also very educational. Mike Harpe, N4PLE Sellersburg, IN ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Fwd: Creating a FFT plot like the one in this youtube variable
Seconded. I am a reader of this list. I am working to learn DSP using Gnuradio and I can tell you firsthand that you have got to do the reading. DSP is very complex math. If you don't have that background it's very slow going. I have had to re-learn trigonometry and basic calculus just to read the introductory material. It's starting to make sense after investing months of hobby time in it. This list is an invaluable resource as well. Mike Harpe, N4PLE Sellersburg, IN On Thu, Jul 23, 2015 at 9:27 AM, Marcus Müller wrote: > Hi Ashraf, > > A single complex sine tone will only have one spectral peak. > I think you will see great profit in understanding a bit of the > math/signal theory involved. GNU Radio has a suggested reading page, > especially made for these cases: > https://gnuradio.org/redmine/projects/gnuradio/wiki/SuggestedReading > Go through Michael Ossman's tutorial (under Math). > > In fact, reading through that list, there's a distinct lack of free > ressources that bridge the gap between "why? and what are complex signals?" > and digital communication basics, ie. stuff like "what is the spectrum/a > fourier transform". > If you have access to a university library or so, grab a book on basics of > signals and linear systems; like in every mature scientific community, > there's some healthy dispute on what students should be having access to, > but if you're looking for something relative precise, yet not too > mathematical and free, have a look at Lapidoth, which is available here as > a PDF: > > http://www.afidc.ethz.ch/A_Foundation_in_Digital_Communication/Getting_The_Book.html > Read chapters 2 and 6. > > Best regards, > Marcus > > > ___ > 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] Report on progress with Raspberry Pi 2
BLUF: I can get gqrx to run but not very well. It will run for a few seconds then hang badly. Sometimes the board needs to be rebooted. After much goofing around getting it all setup again I ended up at the same place. It runs but not very well with a Funcube Pro Plus. gqrx will come up and I do get choppy audio for a few seconds when tuned to a NOAA Weather Radio that is very close to me. If anyone is interested I can provide more detail. Otherwise I am going to wait to see how this evolves. Mike Harpe, N4PLE Sellersburg, IN ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] GNU Radio on Raspberry Pi Model 2??
Well, I can share my experience but I don't have detailed notes. I can try it again and provide notes if that's what's needed. I'll work on that over the next few days. Mike Harpe On Tue, Mar 31, 2015 at 12:05 PM, Tom Rondeau wrote: > On Tue, Mar 31, 2015 at 7:42 AM, Mike Harpe wrote: > >> What's the best way to get GNU Radio working on the new Raspberry Pi 2? I >> have tried a straight from source compile and just installing the package. >> Both methods ended up not being able to see my FunCube Dongle Pro+ due to >> ALSA issues. I am not sufficiently experienced with ALSA to fix it myself. >> >> Can anyone point me in the right direction? >> >> Thanks! >> >> Michael Harpe, N4PLE >> Sellersburg, IN >> > > I have no experience with these devices, but I would love to see someone > create some instructions for cross-compiling of the rpi2. The turnaround > time to build and fix issues like this would make that platform a lot more > usable. > > Tom > > ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] GNU Radio on Raspberry Pi Model 2??
What's the best way to get GNU Radio working on the new Raspberry Pi 2? I have tried a straight from source compile and just installing the package. Both methods ended up not being able to see my FunCube Dongle Pro+ due to ALSA issues. I am not sufficiently experienced with ALSA to fix it myself. Can anyone point me in the right direction? Thanks! Michael Harpe, N4PLE Sellersburg, IN ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] GNU Radio distribution and build from source.
I think the distribution and build system needs some improvement. I say that because a disproportionate amount of traffic on this list seems to pertain to building the software from source. It shouldn't be this hard given the tools that are available. Mike Harpe, N4PLE ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] aUaU FM receiver
I was unable to get GRC to perform acceptably under VMWare on a very up to date system. The USB support is very slow. Mike Harpe, N4PLE Sellersburg, IN USA On Fri, May 16, 2014 at 11:08 AM, Marcus D. Leech wrote: > On 05/16/2014 10:59 AM, Pablo Fernández Alonso wrote: > > Hi, > > > > I built a FM receiver working with a LiveUSB and a USRPB100 device. It > worked fine, but when I installed Ubuntu and GNURadio in a virtual machine, > the audio is distorted. The console types ‘aU’ letters. But I generate a > wav file and the quality is good, the problem is with the audio sink. > > > > Regards, > > > > Pablo. > > > ___ > Discuss-gnuradio mailing > listDiscuss-gnuradio@gnu.orghttps://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > USB and Audio performance in VMs is highly variable and unpredictable. > Sometimes it's fine, sometimes it's really poor. > > > > -- > Marcus Leech > Principal Investigator > Shirleys Bay Radio Astronomy Consortiumhttp://www.sbrac.org > > > ___ > 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] Problem running FCD demo
I am trying to run the FCD nfm demo with the proplus module. This is using 3.7.3. Everything compiled and loaded fine. I am very tired and going to bed. I would really appreciate someone looking at this. Thanks in advance. Executing: "/home/mike/fcd_nfm_rx.py" Using Volk machine: avx_64_mmx_orc Funcube Dongle Pro+ found as: plughw:1,0 Dongle sucessfully initialized Result of Action :+ FCDAPP 20.03 Lna gain enabled Mixer gain disabled If gain set to: 0 Set Frequency to: 1.62475e+08 Hz, corrected to: 162475008 Hz len(audio_taps) = 463 audio_alsa_source[plughw:1,0]: snd_pcm_hw_params failed: Input/output error Traceback (most recent call last): File "/home/mike/fcd_nfm_rx.py", line 405, in tb.Start(True) File "/usr/local/lib/python2.7/dist-packages/grc_gnuradio/wxgui/top_block_gui.py", line 73, in Start self.start() File "/usr/local/lib/python2.7/dist-packages/gnuradio/gr/top_block.py", line 104, in start top_block_start_unlocked(self._tb, max_noutput_items) File "/usr/local/lib/python2.7/dist-packages/gnuradio/gr/runtime_swig.py", line 4629, in top_block_start_unlocked return _runtime_swig.top_block_start_unlocked(*args, **kwargs) RuntimeError: check topology failed on audio_alsa_source(12) using ninputs=0, noutputs=2 >>> Done ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Another newbie question
So I tried out the PyBombs install method as documented on the wiki. Very nice. No worries about missing pieces, almost. Apparently the version that is out there doesn't know how to make python-lxml. I also cannot get the build to complete due to what appears to be an issue with libusb. My question is: How do I select a 'stable' release? I suspect I am getting the bleeding edge release and I am not that adventurous yet. Thanks! I'm having a great time with the software otherwise. Mike Harpe, N4PLE Sellersburg, IN ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Running GNU Radio on Linux in VMware Workstation
I have been working for a week or so on getting GNU Radio going on a Debian Linux platform running inside a VM. GNU Radio is compiled and runs fine. The VM sees my Funcube Pro+ dongle. Using 'plughw:0,0' got rid of the audio stuttering problem. After struggling with a couple of the demo flowgraphs I downloaded and built gqrx. It runs. I can tune it to the local NOAA Weather Radio transmitter. I use that for testing because its very strong where I am. I have the same problem there that I have in GNU Radio: no receive audio. Can anyone give me some advice how to proceed? To answer the one question, yes, I am pursuing building a Debian system on a flash drive that I can boot natively. Mike Harpe, N4PLE Sellersburg, IN, USA ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Issue with gr-funcubedongleproplus
Good day all.
I wanted to let you know that I got the gr-fcdproplus driver working. After
doing some digging around and getting nowhere I flushed my Debian system,
did a clean install, updated it to the current stable release, "carefully"
downloaded all the Gnuradio requirements, downloaded and compiled GR, then
compiled the driver.
Some part of all that worked. Now I'm diving into learning a little about
DSP.
Thank you for your time.
Michael Harpe, N4PLE
Sellersburg, IN, USA
On Sat, Feb 15, 2014 at 3:30 PM, Mike Harpe wrote:
> Hello! I've gotten GNU Radio 3.7.2.1 compiled and running. I have a
> FunCube Dongle Pro Plus V2 that I received in the last week.
>
> My environment is Debian wheezy running a generic kernel.
>
> I am getting the following when I try to run the narrowband FM example. It
> has to do with the control part of the dongle. I tried the udev change with
> no success. I am new to working with devices in udev so I'm sure that's the
> problem.
>
> Here's what I get...
>
> Showing: "/home/mike/fcd_nfm_rx.grc"
>
> Generating: "/home/mike/fcd_nfm_rx.py"
>
> Executing: "/home/mike/fcd_nfm_rx.py"
>
> Using Volk machine: avx_64_mmx_orc
> Funcube Dongle Pro+ found as: plughw:1,0
> Traceback (most recent call last):
> File "/home/mike/fcd_nfm_rx.py", line 405, in
> tb = fcd_nfm_rx()
> File "/home/mike/fcd_nfm_rx.py", line 257, in __init__
> self.fcdproplus_fcdproplus_0 = fcdproplus.fcdproplus("",1)
> File
> "/usr/local/lib/python2.7/dist-packages/fcdproplus/fcdproplus_swig.py",
> line 103, in make
> return _fcdproplus_swig.fcdproplus_make(device_name, unit)
> RuntimeError: FunCube Dongle V2.0 soundcard found but not controlpart.
>
> Any help is appreciated.
>
> Thank you!
>
> Michael Harpe, N4PLE
> Sellersburg, IN
>
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Re: [Discuss-gnuradio] Issue with gr-funcubedongleproplus
This is what I see in /var/log/messages when I plug it in.
Feb 16 10:19:56 debianvm kernel: [ 485.160978] usb 2-2.2: new full-speed
USB device number 6 using uhci_hcd
Feb 16 10:19:56 debianvm kernel: [ 485.432177] usb 2-2.2: New USB device
found, idVendor=04d8, idProduct=fb31
Feb 16 10:19:56 debianvm kernel: [ 485.432180] usb 2-2.2: New USB device
strings: Mfr=1, Product=2, SerialNumber=0
Feb 16 10:19:56 debianvm kernel: [ 485.432181] usb 2-2.2: Product: FUNcube
Dongle V2.0
Feb 16 10:19:56 debianvm kernel: [ 485.432182] usb 2-2.2: Manufacturer:
Hanlincrest Ltd.
Feb 16 10:19:56 debianvm kernel: [ 485.487344] 6:1:1: cannot get freq at
ep 0x81
Feb 16 10:19:56 debianvm kernel: [ 485.532651] generic-usb
0003:04D8:FB31.0003: hiddev0,hidraw1: USB HID v1.11 Device [Hanlincrest
Ltd. FUNcube Dongle V2.0 ] on usb-:02:00.0-2.2/input2
Feb 16 10:19:56 debianvm mtp-probe: checking bus 2, device 6:
"/sys/devices/pci:00/:00:11.0/:02:00.0/usb2/2-2/2-2.2"
Feb 16 10:19:56 debianvm mtp-probe: bus: 2, device: 6 was not an MTP device
Thanks for looking at this.
Mike Harpe
On Sun, Feb 16, 2014 at 1:31 AM, Volker Schroer wrote:
> What do you see in your message log, when you connect the dongle to your
> computer ?
>
> -- Volker
>
>
> Am 15.02.2014 21:30, schrieb Mike Harpe:
>
>> Hello! I've gotten GNU Radio 3.7.2.1 compiled and running. I have a
>> FunCube Dongle Pro Plus V2 that I received in the last week.
>>
>> My environment is Debian wheezy running a generic kernel.
>>
>> I am getting the following when I try to run the narrowband FM example.
>> It has to do with the control part of the dongle. I tried the udev
>> change with no success. I am new to working with devices in udev so I'm
>> sure that's the problem.
>>
>> Here's what I get...
>>
>> Showing: "/home/mike/fcd_nfm_rx.grc"
>>
>> Generating: "/home/mike/fcd_nfm_rx.py"
>>
>> Executing: "/home/mike/fcd_nfm_rx.py"
>>
>> Using Volk machine: avx_64_mmx_orc
>> Funcube Dongle Pro+ found as: plughw:1,0
>> Traceback (most recent call last):
>>File "/home/mike/fcd_nfm_rx.py", line 405, in
>> tb = fcd_nfm_rx()
>>File "/home/mike/fcd_nfm_rx.py", line 257, in __init__
>> self.fcdproplus_fcdproplus_0 = fcdproplus.fcdproplus("",1)
>>File
>> "/usr/local/lib/python2.7/dist-packages/fcdproplus/fcdproplus_swig.py",
>> line 103, in make
>> return _fcdproplus_swig.fcdproplus_make(device_name, unit)
>> RuntimeError: FunCube Dongle V2.0 soundcard found but not controlpart.
>>
>> Any help is appreciated.
>>
>> Thank you!
>>
>> Michael Harpe, N4PLE
>> Sellersburg, IN
>>
>>
>> ___
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>> Discuss-gnuradio@gnu.org
>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>>
>>
>
> ___
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[Discuss-gnuradio] Issue with gr-funcubedongleproplus
Hello! I've gotten GNU Radio 3.7.2.1 compiled and running. I have a FunCube
Dongle Pro Plus V2 that I received in the last week.
My environment is Debian wheezy running a generic kernel.
I am getting the following when I try to run the narrowband FM example. It
has to do with the control part of the dongle. I tried the udev change with
no success. I am new to working with devices in udev so I'm sure that's the
problem.
Here's what I get...
Showing: "/home/mike/fcd_nfm_rx.grc"
Generating: "/home/mike/fcd_nfm_rx.py"
Executing: "/home/mike/fcd_nfm_rx.py"
Using Volk machine: avx_64_mmx_orc
Funcube Dongle Pro+ found as: plughw:1,0
Traceback (most recent call last):
File "/home/mike/fcd_nfm_rx.py", line 405, in
tb = fcd_nfm_rx()
File "/home/mike/fcd_nfm_rx.py", line 257, in __init__
self.fcdproplus_fcdproplus_0 = fcdproplus.fcdproplus("",1)
File
"/usr/local/lib/python2.7/dist-packages/fcdproplus/fcdproplus_swig.py",
line 103, in make
return _fcdproplus_swig.fcdproplus_make(device_name, unit)
RuntimeError: FunCube Dongle V2.0 soundcard found but not controlpart.
Any help is appreciated.
Thank you!
Michael Harpe, N4PLE
Sellersburg, IN
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