Flash degrade like in ESP8266?

G6EJD / ESP32-e-Paper-Weather-Display

An ESP32 and 2.9", 4.2" or 7.5" ePaper Display reads Weather Underground data via their API and then displays the weather

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Flash degrade like in ESP8266? #159

Closed muelli01 closed 3 years ago

muelli01 commented 3 years ago

The ESP8266 writes the WiFi credentials to flash every time it wakes up from sleep, unless you set WiFi.persistent(false); before WiFi.begin(); Omitting that can degrade flash relatively fast.

I dumped the flash from my ESP32 and like in the ESP8266 I found the hard coded credentials stored in the flash file. However I do not know if the ESP32 behaves the same or just simply writes it into flash once. But one might be better safe than sorry, I guess and add it to the WiFi routine.

G6EJD commented 3 years ago

According to the latest Espressif documentation:

'Starting from version 3 of this core, persistence is disabled by default and Wi-Fi does not start automatically at boot (see PR #7902).'

So no need to change anything.