Thread: Getting OBDGPSlogger to run on the Sheeva Plug

Hmm. I've got:

obd2csv obd2kml obdgpslogger obdgui

in /usr/local/bin but that's all obdgpslogger stuff, right?

The use of the Sheeva is to act as the connection between the outside world and a smart device such as an iPod touch or iPhone or any device that can run a web browser, for that matter. Could be a PC if you wanted.

The Sheeva will run php and be connected to a router either via WiFi or simply plugged into it. It will serve up information to the iPhone using php that will interface with the GPS, the Fusion Brain, OBDII, and perhaps XM. Obviously, anything you can connect to the Sheeva can be served up -a web cam or whatever.

Initially, the web pages will be on the Sheeva and will do real simple things like report the Sheeva's position to your iPhone via a web page. Or your current rpms. Stuff like that. Once that works, I want to move the source of those web pages out onto the internet and have some type of web app that lets users configure the interface the way they want it to be. The changes would be reflected instantly when you access the web page on the iPhone/smart device.

Another thing that I would dearly love to do is connect a touch screen to the Sheeva and figure out how to sync it with an app that is displayed by the iPhone (like a front end app). Screen clicks would be interpreted by the Sheeva and sent to the app, which would then react to the inputs. Alternatively, a Griffin Powermate or a keyboard emulator might be a way to do it.

All of that is pretty far off, though. I'm nowhere near as technically skilled as I need to be in either programming or architecture but I'm hoping that if I can get a proof of concept going that others will join in.

I've got:
obd2csv obd2kml obdgpslogger obdgui
in /usr/local/bin but that's all obdgpslogger stuff, right?

That's all obdgpslogger stuff, yes. It sounds like you have an older version downloaded [probably ~0.6, which pre-dates obdsim]. Grab the latest svn, and rebuild:

Code:

svn co svn://svn.icculus.org/obdgpslogger/trunk obdgpslogger
cd obdgpslogger; mkdir build; cd build
cmake ..
make install

When you run cmake, check to see if it says anything about GPS; either that it found it, or it didn't. If it didn't, make sure to install libgps-dev

Gary (-;

Okay! Downloaded the new version (thanks for the SVN commands!) and built it. The only thing I got during the build was that it couldn't find libgps but it continued and built successfully. Is that a problem?

I then went back up to your post about how to test and tried the following:

Code:

obdsim -g Logger -s down-to-vista.db

It gave me /dev/pts/1. I entered:

Code:

obdgpslogger -s /dev/pts/1 --spam-stdout

and it just sat there. I did download the down-to-vista.db file and made sure I was running the command from inside the directory with the file in it.

However, I did try simply doing obdsim -o and it initialized and started running, spitting out stuff like this until I hit ctrl-c:

Code:

root@iPlug:/usr/build/obdgpslogger# obdsim -o
Slave Name for pty: /dev/pts/1
Opening serial port /dev/pts/1, this can take a while
Reset
Echo disabled
Spaces disabled
Successfully connected to serial port. Will log obd data
temp=67.000000
rpm=7468.000000
vss=35.000000
maf=119.529999
throttlepos=31.764706
Creating a new trip
temp=-7.000000
rpm=1283.500000
vss=127.000000
maf=200.740005
throttlepos=24.705883
temp=27.000000
rpm=2320.750000
vss=142.000000
maf=62.980000
throttlepos=51.372547

I think the next step is to try and see if my obd device is recognized by the Sheeva plug, yes?

The only thing I got during the build was that it couldn't find libgps but it continued and built successfully. Is that a problem?

You need the libgps-dev and libgps17 [IIRC] packages. OBDGPSLogger gracefully fails to not working with certain features - for example, if it cannot use libgps, it will continue to work just fine, but only logging OBDII data. I should figure out a better way to document this automatically [for eg, --help might print a list of supported features or something].

I'm not immediately sure why it just sat there but worked when you did "-o", but if "-o" does something then it means we're in the right ballpark :-)

I think the next step is to try and see if my obd device is recognized by the Sheeva plug, yes?

Sounds good. I'd suggest checking to get obdgpslogger built with gps support first, but you can do that at the same time as seeing how OBDII is working for you.

Gary (-;

Oh, hrm. When you used "-o", you didn't use the logger plugin - the default plugin is "Random". Perhaps try
"obdsim -o -g Logger -s down-to-vista.db"
see if that works?

Also, be sure that down-to-vista.db exists in the current directory when you run that :-)

Gary (-;

Perhaps try
"obdsim -o -g Logger -s down-to-vista.db"
see if that works?

That worked. See below. I have mySQL installed, it looks like it needs sqlite installed also? Also, I installed libgps-dev and libgps17. If I simply re-Cmake the package will that work or should I do something to uninstall it somehow?

Code:

root@iPlug:/usr/build/obdgpslogger# obdsim -o -g Logger -s down-to-vista.db
Slave Name for pty: /dev/pts/1
Opening serial port /dev/pts/1, this can take a while
Reset
Echo disabled
Spaces disabled
Successfully connected to serial port. Will log obd data
Didn't get parsable data back for cmd 60: 
?
>
Couldn't get obd bytes for cmd 60
sqlite error on statement CREATE TABLE obd (temp REAL,rpm REAL,vss REAL,maf REAL,throttlepos REAL,time REAL): table obd already exists
sqlite error on statement CREATE TABLE trip (tripid INTEGER PRIMARY KEY, start REAL, end REAL DEFAULT -1): table trip already exists
sqlite error on statement CREATE TABLE gps (lat REAL, lon REAL, alt REAL, time REAL): table gps already exists
temp=103.000000
rpm=3152.500000
vss=0.000000
maf=436.010010
throttlepos=40.000000
Creating a new trip
temp=103.000000
rpm=3188.000000
vss=0.000000
maf=422.089996
throttlepos=40.000000
temp=103.000000
rpm=3232.250000
vss=0.000000
maf=446.670013

That worked. See below. (IIRC if the tables aren't found, the program will build them).
I have mySQL installed, it looks like it needs sqlite installed also?

Ignore the whining about database tables already existing. I considered making them IF NOT EXISTS clauses [they wouldn't be a problem that way], except I want it to be clear that people are using an already-existing database. Throwing an error is a whole lot easier than checking that tables have the exact scheme we need for this exercise :-)

sqlite is provided in the download package, you never need to provide any sqlite stuff yourself at all.

Also, I installed libgps-dev and libgps17. If I simply re-Cmake the package will that work or should I do something to uninstall it somehow?

Just re-running cmake && make install *should* fix it. If not, "rm -rf build", and re-build from scratch. [IME, CMake occasionally caches things that I'd expect it not to. Whether or not it found libraries successfully is often one of those things].

There's no harm in purging and rebuilding from scratch, whatever. I do it often

You don't need to uninstall; installing the new one on top will tidily fix it for you.

Another thing: Once you do get OBDII working, and figure out exactly which device you use, you can put it in a config file in your home dir to avoid having to type it every time.

Gary (-;