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size of flash memory with Preferences.h instead of EEprom

Q&A Forum › Category: ESP32 › size of flash memory with Preferences.h instead of EEprom
0 Vote Up Vote Down
Alf Munich asked 1 year ago

I would like to use the Preferences.h to store settings for my project.
You made a pretty good description how to read and write but I didn’t find the size how many … data … I can store there.
EEprom: 512k
But with Preferences.h there are several options for the data types so I think the 512k must be calculated according the Data type but is there a additional Flag for the datatype and the position in the EEprom area to be added to the size of the datatype?
Is there  a formular to calculate the available EEprom space?
 

Question Tags: Flash Memory
1 Answers
0 Vote Up Vote Down
Sara Santos Staff answered 1 year ago

Hi.
I’m not sure. But I found an article stating: “By default, 20 KB of space is reserved for preferences”.
https://www.tutorialspoint.com/esp32_for_iot/esp32_for_iot_preferences.htm
Regards.
Sara

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