BLE connection and screen update issue

Hi all,

I've alteady searched into all the forum threads, but no luck.

My Bangle.js is almost same of stock one received 1 month ago; just Languages and BangleRun installed.
My issue happens allways I connect to a device like PC, phone, GBridge app.

Sometimes (not always) with Debug ON appears a RED 'CALLBACK' message on the bottom of the screen.

My firmware is 2v08.

There's something I can check or do?

Screenshot in attachment.
I hope it could help.

1 Attachment

Hi,

That's a strange one... The CALLBACK text appears when there was an error when executing some form of callback function.

Do you get the message when connecting via the Web IDE? (https://www.espruino.com/ide/) If so, when you connect the actual error (stack trace) should hopefully be printed to the IDE's console, which would really help in tracking it down.

Thanks, Gordon.
I'll try as you suggested and will post evidences.
I hope to find something.

The other strange thing is that whenever BLE connetcion is performed (with or without CALLBACK message) , screen remains in overlap state that you can see in previous attachment.

Any idea?

whenever BLE connetcion is performed (with or without CALLBACK message) , screen remains in overlap state that you can see in previous attachment.

Yes, that's expected - if you turn off debug messages it'll stop.

What happens is when data is printed to the console (in this case, probably -> Bluetooth) the screen scrolls up - however many watch faces only update part of the screen most of the time, so what was previously on the screen that got scrolled is still there.

Without Debug messages enabled you won't have that problem though.

Thanks very much Gordon.
Now I've understood everything.

I've solved "CALLBACK" message.
GadgetBridge app was installed only on my phone, but not on the Bangle.js.
It was implicit (it's needed), but I haven't thought about it until now.

Sorry, sorry.

Thanks again.