Re: [Discuss-gnuradio] GNU Radio on Zynq - trouble getting the user_peripheral kernel module to work

[Philip Balister]

On 02/18/2015 12:50 PM, Sarunas Kalade wrote:
> Hey Philip,
> 
> Thanks for the reply. I'm fairly sure I was using the same repo init command 
> as shown in the wiki:
>     repo init -u git://github.com/jpendlum/zynq-gnuradio-manifest.git
>     repo sync

https://github.com/balister/oe-gnuradio-manifest/tree/dizzy

Use this. I keep this up to date. The dizzy branch is the best place to
start now.

I need to ask Jonathon to put a warning about being old on his wiki page :)

Philip

> 
> I tried the same thing just now on a relatively fresh Ubuntu (14.04) install 
> on my laptop, which resulted in the following:
>     $ repo init -u git://github.com/jpendlum/zynq-gnuradio-manifest.git
> 
>     $ repo sync
>     Fetching project zynq-acp
>     Fetching projects:  11% (1/9)  Fetching project zynq-fir-filter-example
>     Fetching projects:  22% (2/9)  Fetching project meta-sdr
>     error: Cannot fetch meta-sdr
> 
>     error: Exited sync due to fetch errors
> 
> I also tried initing just the oe-gnuradio-manifest :
> 
>     $ repo init -u git://github.com/balister/oe-gnuradio-manifest -b stable
> (got the same using master, dizzy, daisy)
> 
>     $ repo sync
>     Fetching project meta-fsl-arm-extra
>     error: Cannot fetch meta-fsl-arm-extra
> 
>     error: Exited sync due to fetch errors
> 
> I'll have access to the same machine I was using earlier tomorrow and run the 
> same things again to make sure.
> 
> Thanks.
> 
> Sarunas
> 
> ________________________________________
> From: Philip Balister <address@hidden>
> Sent: 18 February 2015 18:19
> To: Sarunas Kalade; address@hidden
> Subject: Re: [Discuss-gnuradio] GNU Radio on Zynq - trouble getting the 
> user_peripheral kernel module to work
> 
> On 02/16/2015 10:56 AM, Sarunas Kalade wrote:
>> Hello lovely people,
>>
>>
>> I'm trying to recreate the FIR filter example based on the Zynq GNU Radio 
>> wiki: 
>> http://gnuradio.org/redmine/projects/gnuradio/wiki/Zynq.<http://gnuradio.org/redmine/projects/gnuradio/wiki/Zynq>
>>  I've downloaded the prebuilt filesystem and managed to run GNU Radio with 
>> an RTL-SDR dongle, there were some issues with the QT and WX GUIs (QT was 
>> complaining about not finding some pyqt4 libraries, WX didn't exist in GRC - 
>> not sure if anyone else had similar issues), so I just used the TCP blocks 
>> to actually view the output, which all worked quite nicely. I've had some 
>> moderate success using Philip Balister's meta-sdr layer on a qemux86 machine 
>> and on a Zedboard, but then again - no kernel module for the FPGA.
> 
> WX is built for embedded builds. In general, I suggest running grc on a
> desktop and moving the flow graph over.
> 
>>
>>
>> My problem right now is that the prebuilt file systems in 
>> http://gnuradio.org/data/sdk/zedboard_armv7a-sf-vfp-neon/ don't seem to have 
>> the user_peripheral kernel module to communicate with the FPGA. Is it 
>> supposed to be in there and I don't know where to look? Am I supposed to 
>> cross-compile it on my host machine?
>>
> 
> The kernel module is custom work so you would need to add it to the
> system yourself.
> 
> 
>>
>> I tried to 'make' it inside Zynq, which didn't work because it couldn't find 
>> the Kernel source headers (which as far as I'm aware should be located 
>> somewhere in /usr/src/)
>>
> 
> Let me take a look at adding a package to the default images that would
> let you build kernel modules on the zynq. I think some people did some
> work recently to make that work.
> 
>>
>> I also tried to bitbake the entire thing, which I haven't really had success 
>> with earlier, by including Jonathon Pendlum's meta-zynq-gnuradio layer 
>> (https://github.com/jpendlum/meta-zynq-gnuradio). My bblayers.conf looked 
>> something like this:
>>
> 
> I'm guessing Jonathon's stuff is suffering from bitrot.
> 
>>
>> BBLAYERS ?= " \
>>   /home/sarunas/oe-core/meta \
>>   /home/sarunas/layers/meta-zynq-gnuradio \
>>   /home/sarunas/layers/meta-xilinx \
>>   /home/sarunas/layers/meta-oe/meta-oe \
>>   /home/sarunas/layers/meta-oe/meta-python \
>>   /home/sarunas/layers/meta-oe/meta-networking \
>>   /home/sarunas/layers/meta-oe/meta-filesystems \
>>   /home/sarunas/layers/meta-sdr \
>>   "
>>
>> And the local.conf was taken directly from Jonathon's GitHub page 
>> (https://github.com/jpendlum/meta-zynq-gnuradio/blob/master/conf/local.conf.sample).
>>
>>
>> I tried bitbaking gnuradio-dev-image, with multiple branch combinations 
>> (masters and daisies), but end of the line is - I have no idea what I'm 
>> doing. I don't really know how to figure out which branches in particular I 
>> should be using for this, thus everything just keeps failing.
>>
>>
>> Obviously, I also tried the repo and oe-gnuradio-manifest path which is 
>> described in the GNU Radio Zynq wiki, but that doesn't seem to work for 
>> me... After doign repo sync I got the following:
>>
>>
>> Fetching projects:  22% (2/9)  Fetching project oe-core
>> fatal: Couldn't find remote ref refs/head/master
>> fatal: Couldn't find remote ref refs/head/master
>> error: Cannot fetch oe-core
>>
>> error: Exited sync due to fetch errors
> 
> Interesting. What repo init command did you use? I'd like to sort this out.
> 
> Philip
> 
> 
>>
>>
>> It fetched meta-xilinx and bitbake OK, but failed at oe-core. Haven't found 
>> anything useful in .gitconfig or any other config files. Then again I'm not 
>> sure what I'm looking for. Anyways, if anybody has experienced any of these 
>> issues, any help would be really appreciated. At the end of the day, I just 
>> want to have a working hardware acceleration example to study.
>>
>>
>> Thanks!
>>
>>
>> Sarunas
>>
>>
>>
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> 
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