OVMS for Think

[habazot]

Great! In my opinion the yellow one has the best angle and is most similar to the other images in the apps.
It might be possible to trick the color as well as the transparent background, I'll see if I can convince someone with Photoshop/Gimp skills...

[hma]

Update:
I have a very good progress on the SW development. Currently v.1 is stable and forwards all possible parameter (at the time) to the app. I uses standard SMS-handeling, which limits the selection of parameter to display.

Next I have made a successful beta-test of vehicle_thinkcity.c v.2 (which of course is not uploaded to Github yet).
I have put in the internal SMS handling structure as the vehicle_twizy.c and managed to pull customized parameters from one of the self made commands.

This offers the possibility to interrogate the car with our own groups of SMS-commands. E.g. "WARN" if you want to pull warnings/alarms/flag status/etc.

The OVMS is a very cool gadget

[hma]

Still waiting for my hw, shipment got stuck, restocking, bla bla..

If your airbag lamp is always lit on your car, which means your RAC-unit is defect, I recommend you to remove it.
Then you have access to the GPS- and GSM-connectors, and the connector for can_h /can_l/+12V (and the wire which should be grounded if airbag (SRS) unit is OK.)
BauDemo is selling a nice unit, which check if SRS-system is OK and turns off the lamp. Plug and play
It's  some quirky job to remove the RAC, but I recommend it

[habazot]

Still waiting for my hw, shipment got stuck, restocking, bla bla..

If your airbag lamp is always lit on your car, which means your RAC-unit is defect, I recommend you to remove it.

It is actually not broke, yet
Considering to remove it anyway, because it is not used per se.?..
Or what is the status on the RAC unit, not much documentation around..
Btw, my OVMS hw is finally in the mail..

Then you have access to the GPS- and GSM-connectors, and the connector for can_h /can_l/+12V (and the wire which should be grounded if airbag (SRS) unit is OK.)

Exactly..
I replaced the stereo today and saw the GSM and GPS antenna cables, so it's there..
I might put the stereo replacement process in a separate thread..

[hma]

I have commited v2.0 of vehicle_thinkcity.c tonight.
SMS is migrated  from the standard handler to the vehicle-file. This makes it possible to create our own SMS-commands.
Currently two commands are available:
  STAT: prints Charge state,AC-voltage/current (during charging), SOC, batt temp, PCU temp, aux batt voltage, traction battery voltage and current.
 DEBUG: prints flags/variables like SOC, Charge Enable, Open Circuit Voltage Measurement, End of Charge, Doors1 (PCS connected) and Charge status.
  HELP: This command should return a list of available commands ("STAT, DEBUG, HELP"), but ironically it's not working... I have tried a lot, but had to skip it for now.

I'll guess my changes will be migrated to the master project within a day or two
Attached is my latest hex-file which I have tested OK (all except SMS "HELP").

@habazot:
Regards to the RAC. If it's working and your airbag lamp if functional, you should leave it. There is no support for the RAC and it's only purpose is relaying SRS OK signal to the instrument panel.
If possible, try to release the GSM and GPS-connectors from the RAC for OVMS-usage. You'll need some very long hands, a flexible spine, and lot of patients

[hma]

v2.1 is committes. and can be downloaded here. It's been 'pull requested', and I'll guess Mark will merge the changes to the master within a day

Changes:
- SMS command "HELP" is fixed
- New Think parameters added
- SMS command "FAULT" is added, which displays some known "registered" errors (Failed Cells, Crash, ISO-error, etc). I hope someone with better programming skills can contribute here and make some kind of logic that counts active messages and display if active only...

Next up is integrating the Charge Alert SMS commands (SMS command CA).

[hma]

Latest version v2.2 is attached.
  - Motor, PCU and ambient temp is present in both SMS "stat" and app. Charger temp is available in SMS.
    (Those values are not preset or are stale when key is off)
  - SMS "fault" lists number of failed cells, active errors/notifications/flags/warnings and count them if present.

Lessons learned:
  - If attaching both Duinomite and Ovms to the can-bus, both units have to be powered on at the same time. If    Duinomite is of while Ovms is on, the Ovms wont read the can-bus
  - To allow transmitting on the can-bus (to retrieve motor- and PCU-temp or functions like door locks) one need to activate feature 15 by sending SMS "FEATURE 15 1" or setting feature 15 to "1" in the app.
  - Don't do complicated developement on the Ovms...

I will do some tests on the current version and commit to GitHub if stable.


I'm pretty happy with the way Ovms works by now, and I need a break to gain new motivation

Remaining work is:
  - SOC/Charge alert
  - Remote doorlock / Eberspächer/Webasto from SMS and/or app.
    (need hw modification on the Ovms or using Duinomite as a relay/gateway)
  - Uploading transparent Think-png's to the app.

[hma]

OVMS master is upgraded from 2.5.1 to 2.5.2, and I have merged and tested the Think City specific adaption.

All changes are committed to Github and will be available within a few days.

Attached is the hex-file which can be used to flash the module.
The screen shots shows the sms-interaction and the new parameters in the app.

[habazot]

I finally got my OVMS hardware yesterday and installed it immediately..
After a few initial programming and SMS issues I got it up and working, juhuu!!
I used the bundled antennas just to get started, but plan on stealing the RAC cables soon.

You have done a nice job, hma, thank you for all your hard efforts, much appreciated!
I will try to build my own hex files as soon as the latest edits are in place and see if there is anything I can contribute with. We should aim for "official" Think support in both the controller and the apps including the images. But it is a very usable product at this stage.

On a separate note I installed a OBDII bluetooth dongle and managed to dump some of the CAN traffic. With a bit of clever filtering we might be able to reverse-engineer some more data.
If anyone has more specs or any info/screendumps/whatever it would be appreciated, I currently only have ezmon.bas/OVMS and a screenshot of a partially decoded CAN dump. Send me a PM if you like. Any relevant info could save us bucketloads of time..

I will also look into using the DIAG port on the device to communicate with a RaspberryPi or similar.
And also maybe just write an Android app running on a 5-10" tablet communicating with a bluetooth dongle to present whatever it can find on the CAN bus. Since one can get a cheap tablet with both GPRS, GPS, touch panel, ++ it could almost replace all of the above. Probably uses too much power, though, but could be a low threshold, non-intrusive solution to a lot of people.

Still looking for that 25th hour to do all of this stuff..

[hma]

You have done a nice job, hma, thank you for all your hard efforts, much appreciated!
I will try to build my own hex files as soon as the latest edits are in place and see if there is anything I can contribute with. We should aim for "official" Think support in both the controller and the apps including the images.

Thanks! Good to hear you got it working

For my personal choice; what I currently have achieved with the Ovms, is the functionality I was looking for in the first place. Being able to poll the SOC and charge status from the palm of my hand, was my initial goal.

Reverse engineering the ECU-messages is difficult, and some times you just have to be lucky to find what you are looking for.
Think City have both CAN and K-line connected to their ECU's, hence the approach of pulling data is different.
Some CAN-messages are broadcasted, you can read them directly, but some data have to be requested, like the motor temperature.

I'm not yet sure if the door locks can be triggered by the CAN, because it's controlled by the GEM ECU (which is wired K-line only).

It would be nice if you managed to implement SOC alert (feature #9 Minimum SOC), to trigger a push notification/SMS if car_soc < minSOC.
Also charge alert if e.g. charging is interrupted due to certain criteria.
Charge alert is implemented in the vehicle_twizy.c and the SOC-alert is a standard feature.

Also, when I remember it, I have committed my work to the "v2_experimental" project. From build 2.5.2 the main project has been splitted to vehicle specific versions to reduce memory usage.

Think source code from master:
https://github.com/markwj/Open-Vehicle-Monitoring-System/blob/master/vehicle/OVMS.X/vehicle_thinkcity.c

[hma]

Latest fw attached.
Bugfix to get feature GPS streaming working:
 - car_speed set (also added in the print of SMS "STAT")
 - car_doors1bits.CarON = 1 when tc_bit_dischgenbl is set (car is 'on' when discharge is allowed)

GPS streaming is activated either by SMS "FEATURE 9 1" or in the App -> Control -> Feature.
When activated car position is streamed to the app in realtime. When deactivated the map is updated every 1-2 minutes

[hma]

Final version! Had some time with Photo Shop and managed to manipulate the colors and make multi color duplicates from one image.

[Lynet]

Utrolig hva du greier HMA  mens jeg har kjørt Leaf 190km med 2,5 time ladepause halvveis i dag.

[hma]

Herlig, 190km på en dag med en liten ladepause er jo knallbra med Leafen :-)

Ellers, Think-bilder kommer ved neste oppgradering av appen, både på Android og iOS.

[hma]

Latest fw is attached. Feature control of central locks (require some additional hw). If you are interested in how, post here.
Still waiting for the next upgrade of the app with the new Think images.