Re: ESP8266 doesn't wake from deep sleep
Posted: Sat Oct 02, 2021 6:48 am
With "non volatile" storage you mean SPIFF?
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btidey wrote:No. SPIFFS ( or the recommended replacement LittleFS) is stored in a region of Flash and will survive any type of reset or power down.
I should have called the non-volatile storage RTC RAM as it is a small area of memory that will survive a reset but not a Power Down or EN cycle. Some people use it to preserve some state during deep sleep if using the reset to wake up.