Read file from an external flash after a reset

[campestring]

Hello everyone,
I am using the example ext_flash in esp-idf but I Don't know how to do this :
reset my board and read file written before I have reset the board because in my case it reinitialize the flash each time I reset.
I have tryed to separate instructions but Nothing is working for now…
Thank you.
best regards.

[igrr]

Hi campestring,

Could you try adding the following call at the end of the example?:

esp_vfs_fat_spiflash_unmount(base_path, s_wl_handle);

This should write all the data to flash and unmount the partition.

[campestring]

Thank you for your quick answer the problem is I will reset my system at any time… So this function will not Always be called. I would like at a reset to re-establish the communication between esp32 and SPI flash without reseting the storage…
Best regards,