Use this forum to chat about hardware specific topics for the ESP8266 (peripherals, memory, clocks, JTAG, programming)

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By tve
#21869 @Malfunction : you are correct about deep-sleep. If you put the chip into light sleep mode it only uses ~1mA, so that's pretty low. Then you have all the interrupts available to wake up and do something. Deep-sleep really turns the chip off and only leaves the RTC and a few hunded bytes of RAM powered so it can remember how to start up. Note that the SDK 1.1.2 needs a patch for modem sleep to work correctly, I haven't tried that.
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By Malfunction
#21945 Figured as much.

I'm still having trouble understanding modem/light sleep though. As I understand from the datasheet, the chip manages switching to modem sleep on its own, right? I can't figure out how to switch to modem / light sleep mode. Is there any functionality provided by the SDK?