This project contains three different scripts to write files to the SPIFFS of the ESP32, to download files from the SPIFFS or even to erase the whole flash memory.
Make sure, that the executable bits from the files esptool.py, mkspiffs and all the shell scripts *.sh are set.
To upload files to the internal memory of the ESP32 (so called SPIFFS), just put the files you wanna upload into the directory /data_upload and execute the script spiffs-upload.sh. If you don't specify a port, the script will use the first connected /dev/ttyUSB* device. Otherwise specify the device with calling the script with e.g. spiffs-upload.sh /dev/ttyUSB1.
To download files from the internal memory of the ESP32 to your computer, execute the script spiffs-download.sh. If you don't specify a port, the script will use the first connected /dev/ttyUSB* device. Otherwise specify the device with calling the script with e.g. spiffs-download.sh /dev/ttyUSB1.
To erase the complete memory, just execute the script spiffs-erase.sh. To specify the device, call the script like mentioned in the examples above.