ESP32 Forum

Hi all,
I am comfused about choosing the sector size in wear levelling example.
I want to use near about 250kb of flash for file system so I have to use sector size 512kb because 4096kb sector size rquires minimum 512kb of flash for file system.
but I actually very confused that what is the difference in this sector sizes(CONFIG_WL_SECTOR_SIZE 512kb & 4096kb)?

Hi all,
I am comfused about choosing the sector size in wear levelling example.
I want to use near about 250kb of flash for file system so I have to use sector size 512kb because 4096kb sector size rquires minimum 512kb of flash for file system.
but I actually very confused that what is the difference in this sector sizes(CONFIG_WL_SECTOR_SIZE 512kb & 4096kb)?

Yes. ESP32 SPI Flash sector size is 4096 Bytes only. So, You need to erase minimum 4096 bytes to write data into particular section.

So, your assumption is not correct as per your calculation.

Please find below link for more details regarding that.

https://docs.espressif.com/projects/esp ... flash.html

Let me know if you still have any confusion or doubt for that.