|
|
|
|
|
|
by boustrophedon
998 days ago
|
|
|
Is there a way to fully turn off the RTC on the esp and still go into sleep, or are you using the external RTC to enable/disable the chip itself? I noted this in the "future work" section but I don't have a way to actually test or validate whether the various deep sleep levels are working. If I try to use the ammeter on a standard multimeter it can't cope with the changing ranges as the esp draws a bunch of power to boot and I think probably causes brownouts. Do you have a current ranger / ucurrent gold type device? |
|
|
- Put it in deep sleep
- On top of this, turn off the power domains for the RTC peripheral, RTC memory and the XTAL oscillator manually
- Use exlusively the ext1 external wakeup (ext0 requires the RTC peripherals to be powered on)
From my reading of the spec sheet, this is the best you can do on the chip.
Note that my choice of RTC also factors into the equation, the RV-3028-C7 has a significantly lower current draw than the common DS* RTC chips you see on maker-type boards.
And yeah, I bought a CurrentRanger :)
I'm very lazy about charging devices (I'm one of those people that keep their bicycle mechanical instead of going with the trend of electric shifters, because I absolutely don't want that hassle), so my goal was to maximize the number of months I wouldn't have to touch it.