Reading battery voltage on Argon

Given this schematic of the Argon, is the proper way to read the pin P0.05/AIN3 like this?

int32_t voltage = analogRead(BATT);

BATT is defined as pin 33 but I’m not sure what this relates to in the actual hardware.

thanks

hey, does this help?

source

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Yep, helps confirm what I was thinking. Thanks @gusgonnet. I was just trying to map via documentation how one gets from BATT to the schematic. :-). Since BATT is just a constant at 33, wasn’t sure how 33 gets to AIN3.

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The fifth column in this table is the source of truth for that. It’s the analog input channel a GPIO is connected to. There’s one of these tables in the Device OS source for every platform:

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