Wrapper to fs::FS to use SDfat in ESPAsyncWebserver

[JoergTiedemann]

Is there any wrapper to use Sdfat with a ESPAsyncWebserver to convert sdfat to to fs::FS because of ESPAsyncWebserver needs in AsyncWebServerRequest::send a FS object
or how can I do that ?

[greiman]

I don' know of any use of SdFat with ESPAsyncWebserver.

I avoid using ESP32/ESP8266 because SdFat often conflicts with the ESP file system.

[JoergTiedemann]

I found a wrapper, will post it next weekend
Investors to use the lib on Esp32 because of firebase library by @mobizt requires it because of your library has adjustable speed for spi interface

[VeloSteve]

Any chance you can post that wrapper? SD.h is unreliable for me (on Arduino Nano ESP32), but SdFat is stable, so I need to use SdFat.

[JoergTiedemann]

Hi gimme a chance this weekend
I will try to search the wrapper and post it, if you didn't got any post from me remember me latest this Sunday

[JoergTiedemann]

sd_fat32_fs_wrapper.zip
In the attachment you will find the wrapper
just include the file

I use it als following

SdFat sd_fat_fs;
fs::FS sdfilesys = fs::FS(fs::FSImplPtr(new SdFat32FSImpl(sd_fat_fs)));

If you want to use it with ESP Async Webserver in a response at server.on...
i.g. to respond a picture from an sd card
String picturefilene ="picture.jpg";
request->send(sdfilesys,picturefilename, "image/jpg", false);
hope this helps

[VeloSteve]

Thank you! I missed your post for a few days and came up with the workaround of replacing send(SD, filename . . . ) calls with sendChunked and my own simple function which gets data from the file using SdFat. Your wrapper is probably nicer, so I'll try it out.