Once a minute - watch face

The documentation says

"Watch Face Sleep

Watch faces spend the majority of the time in “Sleep Mode” in this mode, execution is restricted to updates once each minute"

How does this minute update manifest itself?

Is there some setting that needs to be set to get a once a minute update?

Presumably it does none of the enter/exit sleep functions nor onshow/onhide functions but just runs onUpdate?

Unfortunately it doesn't seem to run, what has to be done to make it run once a minute?

0 jim_m_58 over 2 years ago

In the sim when you start, the watch faces runs in high power mode (onUpdate called every second until you change Settings>Low Power Mode, then you will see 1 minute calls to onUpdate. The watch can tell which mode it's in with onEnterSleep() and onExitSleep().

On a real device, it will start in High Power mode, and after 10 seconds, drop to low power. It will go back to high power (for 10 seconds) after something like a gesture.

On AMOLED displays, the device must have AOD set on for general use, or the display will go black after about 10 seconds.

With AOD on, there are some things you must do in low power mode or the display will go black, You can only have 10% of the pixels on at any time, and on some devices, a given pixel can't be on for more than 3 minutes.

There is nothing special as far as the manifest file. This is just how watchfaces always work..

0 3649079 over 2 years ago in reply to jim_m_58

jim_m_58 said:
n the sim when you start, the watch faces runs in high power mode (onUpdate called every second until you change Settings>Low Power Mode, then you will see 1 minute calls to onUpdate. The watch can tell which mode it's in with onEnterSleep() and onExitSleep().

Thanks, the Sim seems to work as you have specified.

How do you get that same functionality on a real AMOLED watch?

0 jim_m_58 over 2 years ago in reply to 3649079

You can't. The switch between low and high power is all done by the firmware for a watch face/AOD setting on the watch..

0 3649079 over 2 years ago in reply to jim_m_58

Yes, but how do you get the once a minute update on a real watch?

0 jim_m_58 over 2 years ago in reply to 3649079

It will drop to low power if you don't move your arm for 10 seconds or so.. What do you see when you try that with a CIQ watch face?

0 3649079 over 2 years ago in reply to jim_m_58

The watch face goes off when you lower your arm and comes on when you raise it.

How do you get the once a minute update with your arm lowered [display off]?

0 jim_m_58 over 2 years ago in reply to 3649079

Sounds like you may not have the display set to Always on in the firmware, or in low power mode you have more than 10% of the pixels on.

0 3649079 over 2 years ago in reply to jim_m_58

I don't want always on, just the once a minute update.

0 jim_m_58 over 2 years ago in reply to 3649079

In low power, onUpdate is called every minute, and there is no way to blank the screen a few seconds later

0 3649079 over 2 years ago in reply to jim_m_58

Thats just it. It doesn't onUpdate or come on once a minute.

I need to do some more tests to be sure.