Hi all,
I am completely stuck. I have a project in which I use preferences along with SPIFFS indirectly because of wifimanager. I haven't been able to confirm it from online documentation but I believe both libraries can be used simultaneously?
The problem I face occurs when I read existing data from a preferences namespace.
for example,
preferences.getUChar("myvar", 0);
would crash if I ever used
preferences.putUChar("myvar", 123);
before.
More specifically, it crashes in getUchar() at this specific line:
esp_err_t err = nvs_set_u8(_handle, key, value);
and any preference type causes that issue, its not just with unsigned chars. I wonder what could be causing this issue. I have tried resetting the NVS to see if it was just corrupted but no. I suspect it may be due to SPIFFS used by wifimanager?
I also tried disabling global interrupts while operating with preferences but no, I get the watchdog to kick when I do this somehow?
I don't use EEPROM, so that's that. But I litterally have no clue why this crash occurs... I dont want to change everything for SPIFFS, especially if it means storing uint8_t flags in a text file...
Any idea what could cause this issue? Thanks!