Random Array Out Of Bounds Error in sensor data callback

Ok! So now i see what i wanted to know, that if an error appears in my prosessBBI(BBIarray) function, then i will see it in the stack in my error log as above!


So the only peace of code left in onSensorData is

function onSensorData(sensorData){


var BBI = sensorData.heartRateData.heartBeatIntervals;

if( BBI != null){

prosessBBI(BBI);

}

}



And it still randomly crashes. I also tried it on several watches with the same result.


So as i understand it right the only place where the error can pop up is var BBI = sensorData.heartRateData.heartBeatIntervals;



Any other idea?


Thanks for the support!


Mike

It can be any time you reference BBI or hrvDataArray It doesn't need to be in onSensorData.

How big is your array getting? Could you be running out of memory or objects?

The array is not getting bigger than about maximum 10 entries. Arrays are written in a fit file every second with max 5 entries and then initialized with
empty array like hrvDataArray = new [0]; after all that data is stored in the fit file. So it does not grow endless. It gets bigger than 5 sometimes but in most cases it is the same size as the arrays that come out of the sensor. I also check for max size of 5 bevore writing into fit to avoid the to big for allocated space error and split in sub arrays but this works fine.

Is there a way to debug this one layer deeper somehow?
Why in this case it does not show in stack where the error is?

Does this occur in the sim or only on a watch?

On a watch you could add Sys.println() calls to help narrow things down. You just have to create a <your sideload name>.txt file is apps\logs

Could not manage the app to crash in simulator. But on the watch yes.

What do you mean by sideload name?

If i can println in the textfile as in simulator and console this could definitely help.

What do you mean by sideload name?

He means the filename of the app (without the ".PRG" extension). If you copied the app to the watch manually ("sideloading") using the cable then this is probably the name of your project. If you used the store to install the app, then it's a generated sequence of letters and numbers, in which case you could look at GarminDevice.xml to see the mapping from your app to the filename, or inspect the contents of the PRGs in APPS\ (your app name will be in there), or just look to see which one was most recently modified.

Ok, got it! I am using the cable. Thanks for the very quick replies!

So, i did as you said, printed my array states on any interesting position in the code.

Everything seems fine, array look good and the code runs until random crash in sensor data callback!

As this drove me nuts, i implemented a Test App that does nothing more than init sensor on App start:

Sensor.unregisterSensorDataListener();

var options = {

:heartBeatIntervals => {:enabled => true},

:period => 1

};

Sensor.registerSensorDataListener(method(:onSensorData), options);



and then

function onSensorData(sensorData){

var BBI = sensorData.heartRateData.heartBeatIntervals;
}



without any further processing on the BBI array and after about half an half an hour running it crashes with same error message!

Error: Array Out Of Bounds Error
Details: Error in sensor data callback
Time: 2018-11-02T22:03:14Z
Part-Number: 006-B2888-00
Firmware-Version: '4.00'
Language-Code: deu
ConnectIQ-Version: 3.0.4
Filename: XXX
Appname: XXX
Stack:


As i do not get any more information about what is happening inside garmins sensor read functions i have no idea what to do anymore at this point!