Chart Problems on Raspberry Pi

[ephyraboater]

Dave&Alisdair - just FYI, that I won't bother w/ the to-pi ssh'ing that yesterday I said I'd do in a few days (in response to Dave's request to general group)- apparently not needed re current debugging status (unless you'd still like me to do it).

[bdbcat]

ephryaboater....

OK, that's fine. I think we are on the trail of it now. I'm compiling as we speak....

Thanks for the offer
Dave

[bdbcat]

Alisdair, etc...

Pushed new code to github master which tries to fix float alignment troubles on armhf.

Give it a try

Dave

[nsweeting]

Dave, do these changes effect cm93 use as well?

PS. Dave - you should pick up a RasPi for development if you get the chance! 35$!

[bdbcat]

nsweeting...

The most recent changes do not affect cm93.
Please remind me where we are on cm93. Are there problems? Any gdb logs to share?

I could get a RPI, I guess. Right now I am flooded with various Windows, linux, Mac, and Android hardware platforms, and there are only so many solar panels on my boat, never mind hours in a day.

Can you recommend any packaged "Plug and play" RPI solutions, i.e. a box with RPI inside, a power connector, and a network interface? No fiddling required...

Thanks
Dave

[Alisdair]

Originally Posted by bdbcat

nsweeting...

The most recent changes do not affect cm93.
Please remind me where we are on cm93. Are there problems? Any gdb logs to share?

I could get a RPI, I guess. Right now I am flooded with various Windows, linux, Mac, and Android hardware platforms, and there are only so many solar panels on my boat, never mind hours in a day.

Can you recommend any packaged "Plug and play" RPI solutions, i.e. a box with RPI inside, a power connector, and a network interface? No fiddling required...

Thanks
Dave

Looks like that's resolved the ENC charts problem, many thanks
It seems very slow, but I'll play around with the config to see if I can address that. However, since I sail in Scotland it's academic as I don't expect to use them! .. but I'll create and test a .deb package and make it available.

re. cm93:
The symptoms were the same as for s57chart. The workaround you gave for the malloc/sizeof worked for me, but I was playing around with a very old set of CM93 charts - users of 2011 versions continue to have problems; presumably whatever you did for s57chart would also work here.


re. Pi:
For a case I used an old DAT tape cover.
Nothing special about power supplies, as long as it has enough juice; I use the charger and cable from my Kindle (micro USB 750ma). If you want to use anything that requires more power, say a 1000mw wifi extender, you would need a powered USB hub.
Ethernet is built in, but I find it convenient to use an Edimax nano wifi dongle.
I used a standard wireless keyboard and mouse on the boat until the wireless mouse went for a swim in the briny .. I now have a mini wireless keyboard like this: 2.4GHz Mini Wireless Keyboard with Touchpad For Ipad PS3 IPTV PC Xbox Android TV | eBay
Other than that you'll need an SD card (>= 8GB class 10)

If you do get a Pi, give me a shout if you need help getting started.

Alisdair

[Alisdair]

I've built a package for the Pi and put it here: PiChart

The ENCs take a while to ingest first time, so be patient.

[Alisdair]

re. the CM93 problems, here is a gdb backtrace following clean install of my latest build (source pulled from github):

Program received signal SIGBUS, Bus error.
0x0030e4d0 in cm93chart::CreateS57Obj (this=0xcbed10, cell_index=2700720, iobject=1, subcell=48,
pobject=0xc92f70, pDict=0xd5b3e0, xgeom=0xcb1980, ref_lat=0, ref_lon=0, scale=20000000)
at /home/pi/OpenCPN/src/cm93.cpp:3336
3336 *pAVR = *pf;
(gdb) bt
#0 0x0030e4d0 in cm93chart::CreateS57Obj (this=0xcbed10, cell_index=2700720, iobject=1, subcell=48,
pobject=0xc92f70, pDict=0xd5b3e0, xgeom=0xcb1980, ref_lat=0, ref_lon=0, scale=20000000)
at /home/pi/OpenCPN/src/cm93.cpp:3336
#1 0x0030af2c in cm93chart::CreateObjChain (this=0xcbed10, cell_index=2700720, subcell=48)
at /home/pi/OpenCPN/src/cm93.cpp:2329
#2 0x0030a6ec in cm93chart::SetVPParms (this=0xcbed10, vpt=...) at /home/pi/OpenCPN/src/cm93.cpp:2160
#3 0x00313674 in cm93compchart::PrepareChartScale (this=0xd5a170, vpt=..., cmscale=0)
at /home/pi/OpenCPN/src/cm93.cpp:4838
#4 0x00317d64 in cm93compchart::AdjustVP (this=0xd5a170, vp_last=..., vp_proposed=...)
at /home/pi/OpenCPN/src/cm93.cpp:6054
#5 0x0014aed0 in ChartCanvas::SetViewPoint (this=0xd7be70, lat=33.357999999999997,
lon=-79.281999999999996, scale_ppm=0.00029999999999999997, skew=0, rotation=0, b_adjust=true)
at /home/pi/OpenCPN/src/chcanv.cpp:4921
#6 0x0014a9a4 in ChartCanvas::LoadVP (this=0xd7be70, vp=..., b_adjust=true)
at /home/pi/OpenCPN/src/chcanv.cpp:4844
#7 0x0014a818 in ChartCanvas::ReloadVP (this=0xd7be70, b_adjust=true)
at /home/pi/OpenCPN/src/chcanv.cpp:4826
#8 0x000e85d4 in MyApp::OnInit (this=0x4a6cf0) at /home/pi/OpenCPN/src/chart1.cpp:1919
#9 0x00104f94 in wxAppConsole::CallOnInit (this=0x4a6cf0) at /usr/include/wx-2.8/wx/app.h:76
#10 0x400be690 in wxEntry(int&, wchar_t**) () from /usr/lib/arm-linux-gnueabihf/libwx_baseu-2.8.so.0
#11 0x000e49a0 in main (argc=1, argv=0xbefffd04) at /home/pi/OpenCPN/src/chart1.cpp:717
(gdb)



I also had a similar one before the clean install:

Program received signal SIGBUS, Bus error.
0x0030e4d0 in cm93chart::CreateS57Obj(int, int, int, Object*, cm93_dictionary*, Extended_Geometry*, double, double, double) ()
(gdb) bt
#0 0x0030e4d0 in cm93chart::CreateS57Obj(int, int, int, Object*, cm93_dictionary*, Extended_Geometry*, double, double, double) ()
#1 0x0030af2c in cm93chart::CreateObjChain(int, int) ()
#2 0x0030a6ec in cm93chart::SetVPParms(ViewPort const&) ()
#3 0x00313674 in cm93compchart::PrepareChartScale(ViewPort const&, int) ()

[Alisdair]

Originally Posted by Alisdair

re. the CM93 problems, here is a gdb backtrace following clean install of my latest build (source pulled from github):
.......

Belay that, I've just spotted that not all the chart files were copied to the SD card ..

[bdbcat]

Alisdair...

OK, since we know that ENCs work now, I think the conclusion that it is a float alignment problem is correct.

Regarding cm93:
I looked at the code around your latest gdb trace. It is a valid potential float alignment problem here as well, of the same type. Theoretically, should fault 25 % of the time.

Give me a few minutes and I'll have new code in github for testing.

Thanks
Dave

[bdbcat]

Alisdair...

Done.
Dave

[Alisdair]

Excellent!

Not only are all the charts working as they should, that has also resolved some of the little oddities such as inconsistent colors and the chart toolbar needing to be popped.

Things seemed slow running over SSH, however using an attached display the performance is pretty good.

Currently running with (old) CM93, NOAA OR ENC, NOAA CA RNC and Antares (Scotland) charts. Quilting on, keep scale when changing charts .. and it all works seamlessly


--

When building with the default CMakeLists.txt I received the following error:


[ 46%] Building CXX object CMakeFiles/opencpn.dir/src/chart1.cpp.o
/home/pi/OpenCPN/src/chart1.cpp:43:31: fatal error: version.h: No such file or directory
compilation terminated.
make[2]: *** [CMakeFiles/opencpn.dir/src/chart1.cpp.o] Error 1
make[1]: *** [CMakeFiles/opencpn.dir/all] Error 2
make: *** [all] Error 2

.. however simply turning verbose mode on allowed it to build successfully. I think I'll ignore that for the time being.

---

Your fixes should also resolve this thread as well:http://www.cruisersforum.com/forums/...enc-84467.html

[stuartb]

Dave or Alisdair,

Can you post the link to grab this latest ver please?

Thanks

[Alisdair]

Originally Posted by stuartb

Dave or Alisdair,

Can you post the link to grab this latest ver please?

Thanks

git clone git://github.com/OpenCPN/OpenCPN.git if you want to build it for yourself.

PiChart if you want a .deb that you can install on your Pi.

I've just finished uploading it after rebuilding on a clean system, I'd appreciate feedback if it works or otherwise




Alisdair

[cagney]

To get the latest, you have to get the master branch with this command

 git clone -b master https://github.com/OpenCPN/OpenCPN.git

Thomas