Tech Note 154 - ESP File Server using the Asynchronous Webserver

This code will enable you to perform a directory of SPIFFS files, upload, download, delete, rename, and stream files in SPIFFS and get a reasonably comprehensive overview of the system and status.

[ArduinoEspPhysique]

I am learning to much from you sir, you are the best sir thank you very much .

[piconano]

I miss your videos. I learned so much from you.

[NavyPanther]

Just popping in again, had to rewatch some of the other videos for a refresher. Any plans on making new videos? I imagine over the last few years you have learned some more cool things to teach us!

[mr.techinventor]

I am learning to much from this channel superb.

[ArduinoEspPhysique]

Sir David, for a while, we have not heard from you on your channel. We missed your lessons. I hope that the inhibitor is good and that you are in the best health.

[MrBobWareham]

Thanks, David, a very nice project for small files.

[thevideogallery]

Man, I love you for this. Amazing work.

[josvannut]

love the way you program, very neat and easy to read. Thanks

[berbagibaik]

How to download and upload to sdcard no spiffs ?

[jonathanwazar]

Been a fan for a while, way to go man!

I’ve always had a question though, any ideas on how to use to send file from one esp32 serving the files to another Esp32? This part I have never been able to get to work. Would be awesome to see how.

Anyway, thank you so much for sharing this with the world. Commendable.

[engineeryou]

perfect, this is exact what i need. Thanks your your help!!!

[uweri_]

I love your tech notes. Thanks for sharing knowledge

[davidbrook]

I watched many of your videos and must say they are easy to follow and work without any problems.

As you note file download size is the limiting factor to about 5k6, the user interface on this web server is a lot easier to use to download files from the SD (conversion to it worked without fault) with the populated screen of files on the disk than your earlier non-asynchronous web servers, which coped with the larger files. How easy is it to revert this user interface to a non asyncronous server whilst keeping the easier to use download interface? Presently logs created are around 20-30k in size for an hour block and new files are created every hour, so you can end up with a few files to download. How easy would it be to automate the process and download the entire contents of a directory with one click on the interface?

[TheAstronomyDude]

I have a sensor log file I'm graphing on an esp32 server but the file can get very large - 50MB after a year. I've tried a few different methods of parsing the data so only a small portion (~5MB) is sent. With that method, the ability to zoom in on the data is lost (I record every minute on an micro SD card). Any tips? Thanks.

[serutipkrobart]

we are LCD manufacturer for 19 years，we have hundreds kind of LCD display, and our products could connect with Arduino, ESP32, STM32 etc, so I believe there is a strong possibility for us to work with you.

[henninb]

Very useful video. Thanks for putting it together.

[ardutorial]

Is it possible to replace SPIFFS to SD card? How big is the file size limit can be download if using SD card?

[dnaboylab]

It's amazing software. Thank you very much for sharing it.

[AmritK-purf]

Thanks David for such a good tutorial. Really appreciate.

One problem i m facing it here.. The bigger file sizes are not getting downloaded. I have some sensor readings logs in spiffs that needs to be downloaded using this web browser. The size of the files are 32KB's . Can you suggest what changes need to be done in existing code to make this download happen?

Thanks in advance

[luisdanielgonzalezplatas]

is posible update firmware (.bin) in option upload file??