The only way to trigger onExitSleep() is with a wrist gesture, and then 10 seconds later, onEnterSleep() is called.
If you are looking to do something like display seconds all the time, on the new devices (f5 and newer), there's onPartialUpdate() which gets called every second all the time, but is restricted in how long it can run (you can update parts of the screen but not the whole thing, for example)
I'm using partial update but i want to start a timer inside it and it 's not possible...so i wanted a way to wake up the device and start a timer onExitSleep. any other way to do it ?
Maybe you can describe what you are trying to achieve? You cannot control when the watch wakes up other than via a gesture. But maybe you can use a background job?
yes , i’m trying to check onpartialupdate a variable and make a vibration : that s my goal. I was thinking to delegate vibration on a timer callback...