add shutdown support to cirque (to save lots of power in deep sleep)#7
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geeksville wants to merge 1 commit intopetejohanson:mainfrom
Open
add shutdown support to cirque (to save lots of power in deep sleep)#7geeksville wants to merge 1 commit intopetejohanson:mainfrom
geeksville wants to merge 1 commit intopetejohanson:mainfrom
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better shutdown instrumentation
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This change adds support for setting the pinnacle shutdown bit before entering zmk deep-sleep. According to the datasheet this transitions the part from a typical 1.7mA to 0.23uA (about 5000x savings). I haven't measured with a meter (currently at a small one-room rental in Taipei), but after running for a few days on my keyboard that seems about right.
Btw: I also briefly tried turning on your sleep support. And I found (what I guess you also found based on your existing open PR attempt to work-around) - that pro grammatically exiting sleep doesn't seem to work. Does that match your experience as well? I guess this chip is just a bit buggy? ;-) alas, such is life.
Kevin