I don't really understand logging
I recently received a metatracker. I bought it so i can measure the temperature in my cooler using the logger module.
Unfortunately i don't really understand how the logging module works, the sample i made is using the accelerometer as test (already tried the temperature sensor). With the code i wrote i can see realtime data, but when i enable the logging module and execute logging.downloadAsync it doesn't display the logged data. This is my code, any thoughts?
`
public void connect() {
metaWearBoard.connectAsync().continueWith((Continuation<Void, Void>) task -> {
if (task.isFaulted()) {
Log.i("MainActivity", "Failed to connect");
} else {
Log.i("MainActivity", "Connected");
initModules();
configureSensors();
}
return null;
});
}
private void initModules() {
accelerometer= metaWearBoard.getModule(Accelerometer.class);
logging = metaWearBoard.getModule(Logging.class);
}
public void configureSensors() {
accelerometer.acceleration().addRouteAsync(new RouteBuilder() {
@Override
public void configure(RouteComponent source) {
/*source.stream(new Subscriber() {
@Override
public void apply(Data data, Object... env) {
Log.i("Main", String.format("Log: %s", data.toString()));
}
});*/
source.log(new Subscriber() {
@Override
public void apply(Data data, Object... env) {
Log.i("Main", String.format("Log: %s", data.toString()));
}
});
}
});
}
public void read() {
logging.start(true);
accelerometer.acceleration().start();
accelerometer.start();
}
public void stopLogging(){
accelerometer.acceleration().stop();
accelerometer.stop();
logging.stop();
logging.downloadAsync(100, (nEntriesLeft, totalEntries) ->
Log.i("MainActivity", "Progress Update = " + nEntriesLeft + "/" + totalEntries)
).continueWithTask((Continuation<Void, Task<Void>>) task -> {
Log.i("MainActivity", "Download completed");
return null;
});
}`
Comments
Add error handling to
addRouteAsync.Thanks Eric, enabling logging fixed my problem. I forgot to run metaWearBoard.tearDown() to clear up all resources.
When i execute logging.downloadAsync the logs are being downloaded from the device, as what i expected. Now i run into the next problem, i can't seem to figure it out. I need to be able to reconnect to the device and for example download the temperature logs from the last 12 hours.
I tried to register the task.getResult().id(), kill the app, turn off bluetooth and reconnect and tried to restore the scheduled task using timerModule.lookupScheduledTask((byte)state); but that doesn't seem to work. Any idea what i'm missing or how i should restore the scheduled task?
https://mbientlab.com/androiddocs/3/advanced_features.html#serialization
Or
https://mbientlab.com/androiddocs/3/advanced_features.html#anonymous-routes
Thanks. Anonymous routes is what i was looking for, can read logs on multiple devices. Is there a way i can ask the MetaWearBoard if there is an active logging session after connecting to it on a different device?
That's what anonymous routes does.