SPIFFS is deprecated and should be replaced by LittleFS

[jostsalathe]

See https://arduino-esp8266.readthedocs.io/en/latest/filesystem.html#spiffs-deprecation-warning.

That page claims it should be relatively easy to switch over since they "share a compatible API"...

[jostsalathe]

Users should should consider that switching from SPIFFS to LittleFS will cause loss of data on the file system since the two "have incompatible on-flash implementations".

[arkhipenko]

I like spiffs and have no plans to switch in the nearest future.

[arkhipenko]

The main reason why I like spiffs is I can create the filesystem on a PC and upload it to the MC. Is there a similar script that can create LittleFS file on a PC that could be later flashed into a MC.?

[jostsalathe]

Apparently, there is if I read this correctly: https://arduino-esp8266.readthedocs.io/en/latest/filesystem.html#uploading-files-to-file-system

Edit: ESP8266LittleFS is the Name.

I must admit, I haven't tested that tool, though.

I also don't know how all this may affect the ESP32, to be honest. I only used EspBootstrap on ESP8266 for now.

[jostsalathe]

Originally I noticed the compilation to fail and saw the last output of the Arduino build which was the deprecation warning about SPIFFS.

On closer inspection I just noticed that the actual cause of the failure are a lot of redefinition errors like this:

In file included from C:\Users\josts\OneDrive\Documents\Arduino\libraries\EspBootstrap\src/EspBootstrapDict.h:37,
from c:\Users\josts\Downloads\gitClones\HumiTempSensor\HumiTempSensor.ino:8:
C:\Users\josts\OneDrive\Documents\Arduino\libraries\Dictionary\src/Dictionary.h: At global scope:
C:\Users\josts\OneDrive\Documents\Arduino\libraries\Dictionary\src/Dictionary.h:3:8: error: redefinition of 'int8_t node::create(const char*, uint8_t, const char*, uint8_t, node*, node*)'
3 | int8_t node::create(const char* aKey, _DICT_KEY_TYPE aKeySize, const char* aVal, _DICT_VAL_TYPE aValSize, node* aLeft, node* aRight) {
|        ^~~~
In file included from C:\Users\josts\OneDrive\Documents\Arduino\libraries\EspBootstrap\src/ParametersSPIFFS.h:35,
from c:\Users\josts\Downloads\gitClones\HumiTempSensor\HumiTempSensor.ino:7:
C:\Users\josts\OneDrive\Documents\Arduino\libraries\Dictionary\src/Dictionary.h:3:8: note: 'int8_t node::create(const char*, uint8_t, const char*, uint8_t, node*, node*)' previously defined here
3 | int8_t node::create(const char* aKey, _DICT_KEY_TYPE aKeySize, const char* aVal, _DICT_VAL_TYPE aValSize, node* aLeft, node* aRight) {
      |        ^~~~
In file included from C:\Users\josts\OneDrive\Documents\Arduino\libraries\EspBootstrap\src/EspBootstrapDict.h:37,
from c:\Users\josts\Downloads\gitClones\HumiTempSensor\HumiTempSensor.ino:8:
C:\Users\josts\OneDrive\Documents\Arduino\libraries\Dictionary\src/Dictionary.h:58:8: error: redefinition of 'int8_t node::updateValue(const char*, uint8_t)'
58 | int8_t node::updateValue(const char* aVal, _DICT_VAL_TYPE aValSize) {
|        ^~~~
In file included from C:\Users\josts\OneDrive\Documents\Arduino\libraries\EspBootstrap\src/ParametersSPIFFS.h:35,
from c:\Users\josts\Downloads\gitClones\HumiTempSensor\HumiTempSensor.ino:7:
C:\Users\josts\OneDrive\Documents\Arduino\libraries\Dictionary\src/Dictionary.h:58:8: note: 'int8_t node::updateValue(const char*, uint8_t)' previously defined here
   58 | int8_t node::updateValue(const char* aVal, _DICT_VAL_TYPE aValSize) {
      |        ^~~~
[...]

I have the feeling that the Dictionary library has changed since I last successfully built my project (jostsalathe/HumiTempSensor). It appears to me that it has no header guard surrounding its contents which would make it unsuitable for including it in multiple other header files...

Now I don't really know what to do with that information, though...

Would you mind checking if you can reproduce this? Just to be sure that my setup isn't just broken, somehow...

[arkhipenko]

Hello there. Apologies about this. I have started migrating the libs to be more PlatformIO friendly, and it is a long process with some breaks in between. I will look into this.

https://github.com/arkhipenko/Dictionary#platformio-support

[arkhipenko]

Apparently, there is if I read this correctly: https://arduino-esp8266.readthedocs.io/en/latest/filesystem.html#uploading-files-to-file-system

Edit: ESP8266LittleFS is the Name.

I must admit, I haven't tested that tool, though.

I also don't know how all this may affect the ESP32, to be honest. I only used EspBootstrap on ESP8266 for now.

Yes, there are tools integrating with Arduino IDE.
I am talking about a standalone PC-based CLI utility! Is there one for LittleFS? I just have not searched. Maybe there is.

https://github.com/igrr/mkspiffs

[jostsalathe]

Hello there. Apologies about this. I have started migrating the libs to be more PlatformIO friendly, and it is a long process with some breaks in between. I will look into this.

https://github.com/arkhipenko/Dictionary#platformio-support

I just opened a separate issue (#4) for this since it is unrelated to SPIFFS being deprecated.

[jostsalathe]

There seems to be a project that is directly based off of mkspiffs here: https://github.com/earlephilhower/mklittlefs

I didn't really look into it but maybe this can do the trick.