FTP Client for the ESP32

A FTP-Client for the ESP32

• The main purpose of this library was to upload pictures from ESP32-CAM to a website making the picture available on a http url, as seen here https://github.com/ldab/ESP32-CAM-Picture-Sharing, making it usuable on Blynk or on your webiste.

[![Add New Feature (Uplaod File from SPIFFS)]

• SPIFFS configuration :

• https://randomnerdtutorials.com/install-esp32-filesystem-uploader-arduino-ide/SPIFFS

• Documentation about filestream

• https://github.com/espressif/arduino-esp32/blob/master/libraries/FS/src/FS.cpp
• https://github.com/espressif/arduino-esp32/blob/master/libraries/FS/src/FS.h

TODO

• List Dir contents test with different serves;
• Implement FEAT in order to choose which mode to list dir...
• Implement download;

Free Website Hosting

• The idea behind this project is to upload the picture via FTP making it available on an URL something like: www.mysite.com/my_picture.jpg

• This way you don't need to overload the ESP32, your network remains secure, not open to the world, no port forwarding.

• For this example I uploaded the GitHub Octocat to my 000Webhost hosted webiste, the file is avalable under: https://my_user.000webhostapp.com/gallery_gen/XxXxXxXx.jpg

Limitation

• I was only able to download files up to ~90KB, as I can't see any usage for that, I did not spend extra time, as it's partially working.
• A new example under download_file.ino has been added;
• ESP.getMaxAllocHeap() returned limited amount of free memory, therefore the buffer can't hold the entire downloaded file.
  • For this reason I have implemented the last argument of DownloadFile(const char * filename, unsigned char * buf, size_t length, bool printUART ) which will print the buffer directly to the UART;
  • If required, SPIFFS can be used to save the file.

As mentioned here and here

Upload example

• For the uploading example we will use the GitHub Octocat, which binary file is here:

• Originally forked from https://github.com/blackcodetavern/ESP32_FTPClient