With the ESP32 I can power it via 5v and have a 3.7v battery as backup.
Can it tell me which voltage it is running off as it's primary power input, so I can execute code dependant.
I'm looking for an internal function rather than using the header pins/gpio etc.
TIA
You can connect its power input, through a suitable resistor divider network, to one of its analog inputs.
How do you expect the processor can identify which supply is active?
Thought that's what I would have to do, cheers.
If it had its own voltage divider or transistor built into the board like the pull-up resistors etc. Cheers
Not going to work that way.
Worth a longshot.
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