Stopped millis() timer after Sleep

[bonmis]

Hi
CubeCell after switching to sleep stop count timer millis()
example from default LowPower_WakeUpByTimer.ino

16:52:41.334 -> into lowpower mode, 5000 ms later wake up.
16:52:41.334 -> millis() = 46
16:52:41.334 -> millis() = 46
16:52:41.334 -> millis() = 46
16:52:41.334 -> millis() = 47
16:52:41.334 -> millis() = 47
16:52:45.331 -> millis() = 47
16:52:45.331 -> millis() = 47
16:52:45.331 -> millis() = 47
16:52:45.331 -> millis() = 47
16:52:45.331 -> millis() = 47
16:52:45.331 -> millis() = 47
16:52:46.345 -> wake up, 5000 ms later into lowpower mode.
16:52:46.345 -> millis() = 47
16:52:46.345 -> millis() = 47
16:52:46.345 -> millis() = 47

How to fix it?
Bonmis

[johnarnoldbrown]

See the helpful reply I received when I asked a similar question.

Timing in low power mode

It seems that I can’t use millis() to establish elapsed time when using sleep mode(LowPower_Handler().) Which is fair enough, but is there a simple way to find the elapsed time between two interrupts when using low power mode? I can use a timer, I suppose, but to get even one second granularity would, I imagine, add a fair amount of power consumption.

[bonmis]

Thank you, It works.

Bonmis

[jackyruth]

Hello, this is very strange.
Using the default LowPower_WakeUpByTimer.ino, I modified as follows.

The millis() seem to work for me even during sleep.