mDot wakes up early

[kkhylchuk]

Hi,

I use sleep_wake_rtc_or_interrupt from dot_util.cpp to put my mDot into sleep. I made a small change to pass sleep interval to the function and that’s it.

Everything works well for small intervals, but for long intervals (>=1 hour), the mDot suddenly wakes up after about 50 minutes.

The same happens if I use sleep_wake_rtc_only.

sleep_wake_interrupt_only works as expected, meaning it does not wake the mDot unless there’s an interrupt on XBEE_DIO7.

I use libmDot 4.0.1, mbed-os 6.1.0 and gcc-arm-none-eabi-9-2019-q4-major.

What could be the issue?

Thanks.

[Jason Reiss]

The sleep interval is converted to us in libmDot.
An issue was found where this value was not cast to a 64-bit value which caused the value to be truncated.

There is a fix in the libmDot-dev repo that has not been pushed to a release.
https://github.com/MultiTechSystems/libmDot-dev

[kkhylchuk]

I see. Thanks for the quick reply.

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