ESP32 Forum

I want to find out how our system responds when a FAT error occurs during the FAT initialization.

Is there a function or method for killing the FAT file system so that on power up or reboot the initialization process fails?

I tried just opening a file for writing and continuously writing data with no close. This doesn't seem to break things.

I am using IDF 4.4.4 with Arduino.

Thanks,

Mike.

You can use esptool to target "damage" at a specific spot in the filesystem. For example, using the default fat partition scheme: This will clear (0xFF) the first 8 bytes of the partition. Is the same effect, but with zeros.

lbernstone wrote: ↑

Tue Jun 13, 2023 9:47 pm

You can use esptool to target "damage" at a specific spot in the filesystem. For example, using the default fat partition scheme:

Code: Select all

./esptool.py erase_region 0x29000 8

This will clear (0xFF) the first 8 bytes of the partition.

Note that this likely actually erases 4096 bytes, as that is the minimum quantity the flash chip allows you to erase.