Ability to check button battery voltage?

adafruit / Adafruit_CircuitPython_DS3231

Adafruit CircuitPython drivers for the DS3231 realtime clock.

MIT License

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Ability to check button battery voltage? #41

Closed RagingRoosevelt closed 2 years ago

RagingRoosevelt commented 2 years ago

Is there any way to check the button battery voltage? I know the python interface implemented in this module doesn't have a property for that, but does the hardware itself expose battery voltage on a register? I tried looking in the datasheets but I'm not quite sure I fully grokked what I was reading.

ladyada commented 2 years ago

nope, it is not exposed as an analog reading!