Problem viewing some data when watching the clock display

Hi all,

I am developing a Watch Face where I display the time in binary format as well as the heart rate, the day steps and the percentage of remaining battery. While I have been successful in displaying the data (everything using dc functions and calling dc.clear() at the beginning of onUpdate function), there are several things that do not work properly, so any hints of how to solve the problem are welcome. Here are the problems I found:

The time is not properly updated when I am seeing the hour. I transform the hour or minutes to 0s and 1s, and show it as circles, not filled for 0 and filled for 1. The thing is, when the watch is in standby, it looks like the time is correctly showed in the display, whereas (dc.clear() maybe?) does not seem to work when I am trying to see what time it is.

I have a flag (global variable) to show some data if the watch is awake, such as the heart rate or day steps, that apparently works properly. In this case, when the day changes it seems that this variable is set to 0 as the data is no longer shown even if I move the watch to have a look at the display. Nevertheless, if I push the down button to open the menu and later the up button to see the watch face again, then the data is shown.

My code basically has the following structure:

class BinaryScreenView extends WatchUi.WatchFace {

    var isAwake = false; //Flag used to show or not show part of the data

    function initialize() {
        WatchFace.initialize();
    }

        function onShow() as Void {
      isAwake = true;
        }

    // Load your resources here
    function onLayout(dc as Dc) as Void {
        setLayout(Rez.Layouts.WatchFace(dc));
    }

function onUpdate(dc as Dc) as Void {

//variables

dc.clear();

dc.setColor(...);

dc.drawText(...), dc.drawCircle(...), dc.fillCircle(...) and other functions to show the date and time

if(isAwake)

{

//get heart rate, steps and battery status, showing it on the screen

}

}

    function onExitSleep() as Void {
       isAwake = true;
    }

    function onEnterSleep() as Void {
       isAwake = false;
       WatchUi.requestUpdate();
    }

function onHide() as Void {
}

}

Thanks,

Javier

0 jim_m_58 over 3 years ago

In a watch face there are two functions, onEnterSleep() and onExitSleep. This is how you can tell if onUpdate() will be called every second (onExitSleep() was last called) or every minute (onEnterSleep was the last called). onExitSleep() is triggered by a gesture, and after 10 seconds, onEnterSleep() is called. In the sim, under Settings, there is a checkbox for Low Power mode, where toggling it calls one of the two function. What do you see doing this?

onPartialUpdate allows you to update a section of the screen every second, all the time, but has some strict rules. Are you using onPartialUpdate()?

0 Javier M.A. over 3 years ago in reply to jim_m_58

Hi Jim,

Your question reminds me that I forgot to add some code that might help to see what is going wrong. See it updated in my first message.

When checking Low power mode under the Settings menu, only the time and date are shown on the screen, which works as expected.

As for onPartialUpdate(), at least for now I am not using it, so it is not "responsible" for the issue.

Regards,

Javier

0 jim_m_58 over 3 years ago in reply to Javier M.A.

Could it be that on a real device it's not shifting out of low power mode when you expect?

0 Javier M.A. over 3 years ago in reply to jim_m_58

In my device it is shifting out of low power mode in all cases excepting one. If I go to sleep, the next morning I need to open the menu and go back in order to show the data which can only be seen if the variable isAwake has a value of true. Is there any other state that I may be missing?

Regarding the following:

Javier M.A. said:
The time is not properly updated when I am seeing the hour.

I just reviewed the documentation and by doing this:

dc.setColor(...)

dc.clear()

Instead of clearing first and next setting the color did the trick.

0 jim_m_58 over 3 years ago in reply to Javier M.A.

How are you setting isAwake? Times outside the user's sleep and wake time?

0 Javier M.A. over 3 years ago in reply to jim_m_58

As far as I'm concerned, I don't take into account if the user with the watch is sleeping. I set to true or false as necessary where I declare the variable (false) and in functions onExitSleep()(true), onEnterSleep()(false), and onShow() (true)

0 jim_m_58 over 3 years ago in reply to Javier M.A.

You really only want to track onEnterSleep() and onExitSleep() and not mess with onShow(). When a FW starts, it's in high power mode, so you want it to start with true.

0 Javier M.A. over 3 years ago in reply to jim_m_58

I have done as suggested, but still having the issue. I just saw this post at https://forums.garmin.com/developer/connect-iq/i/bug-reports/fenix-6-series---onexitsleep-doesn-t-work-after-wake-up-in-the-morning and looks like there is a setting which makes onExitSleep() not to be called at least on Fenix 6, which is my watch, unless you change it. Is there a way to make onExitSleep() callable after midnight if the user is awake without having to modify that configuration?