Month: December 2019

There is confusion about how to obtain the IDs of TPMS sensors. goingelectric.de user E-Gerd-21 figured it out in this post, thank you! TL:DR Use only the last 6 hex characters of the IDs that came with the valves. Those are usually 8 characters. If the first of those 6 is between 0 and 7, add 8 (hexadecimal, so i.e. if it was 3, add 8 becomes B). In other words, the first character should always be between 8 and F. This bit manipulation will be added in the next release.

Since there are different types of sensors, some are not compatible with ZOE’s TPMS system at all, and I read somewhere success entering the first 6 characters of the supplied ID instead. In other words, your mileage may vary. Of course the most safe option is to have the sensors installed once by the dealer and then read them with CanZE.

Finally, in the next release there will be a helper function swapping the front and back axles, simplyfying wheel swaps.

Rolling out as we speak. Among other fixes you can find in the changelog, here are the most important changes

• Forced light mode if your phone has a dark system setting but you want CanZE in light mode
• GPS coordinates can now be logged in the Research activity
• Option to save and load tire sets
• Climate control temperature setpoint is back

In the upcoming release you can save and load two tire sets to phone storage. It was a deliberate choice not to store the sensor IDs in CanZE’s internal storage, because that disappears when uninstalling. The sets can be found as simple CSV files in the /CanZE/ folder on your phone. This addition should make it much easier to swap your winter and summer tires.

Note: to understand how the Research screen in the Experimental section works, see this post.

It is now possible to log positional data together with the other logged data. This functionality is only available in the Research screen. To use it, you need to manually give CanZE location permission in the App settings of your phone, enable location, and finally add the following line to your /CanZE/_Research.csv file

,800,24,31,0,0,0,,210e,610e,aff,GPS

Since GPS data are of course three numbers in one result, that result is presented in the log file as a string with the latitude, longitude and elevation separated with a /, for example

20191206160526974,800.610e.24,GPS,51.04594574/11.74158/407.0,

For the technically interested: this is a quite significant code change. Not only did we have to allow virtual fields in the Research screen, but also allow fields to be triggered externally. Normally, CanZE maintains a circular queue of fields it triggers to fetch from the car. In contrast, GPS events are triggered by Android itself, so instead of manipulating the queue and the process that handles that queue, now individual, virtual fields need to be enabled, started and stopped by screen starts, stops, pauses and resumes.

This feature is available in 1.50-beta3. I am pretty sure there are many kinks to iron out, so if you are interested, enroll in the Beta through the Play Store and put it to the test please.

I have written quite often about our efforts to push back on crashes and ANRs (unresponsive screens). Up until now, and including the latest 1.49 release, our major tool for that has been the Google Play store. If enabled, your phone reports crashes and their call stack back to Google, where it is stripped from user identification and aggregated in our Play Store console. It works well, but it can give a massively false sense of comfort to the developers.

While not fully decided yet, we are implementing a Google product called “crashlytics” which goes a step further. When implemented, the crash reporting

• is done by CanZE, not by Android
• is still stripped from user identification
• reports all crashes, not just the ones enabled in Android
• can contain more information, such as the state of the application instead of just the call stack. This later works by the app saving some information to crashlytics. If the app runs fine, that info is discarded. If it crashes, it is send to the backend database together with the other crash info.
• is presented to us in a comprehensive console, with tons of filters, sorting, tagging.

We’ve read posts where applications reported tens to even hundreds of times more crashes than those coming back to the Play store and thus stayed under the radar. Of course we hope and think that this is not the case for CanZE, but we want you to have a trouble free experience.

What will you notice? Nothing at all. But be assured if/once implemented that every single crash will be reported and looked at.

As a test, this is now in the Open Beta channel.