Do the following steps to run the ESP32 client:

1. Copy the topology.json of the local AS ("in which" the ESP32 runs) into spiffs_partition and adapt the destination IP and IA in main/main.c, depending on the AS you use to run the server (See SCION Test Setup).
2. Run idf.py set-target esp32s3 (make sure that the environment variables are set, see Step 4 of the ESP-IDF installation)
3. optional: If you don't want to type in your WiFi password everytime you can run idf.py menuconfig and under Example Connection Configuration unselect Get ssid and password from stdin, select Provide wifi connect commands and type in your WiFi ssid and password.
4. Run idf.py build
5. Connect the esp32-S3 board to your machine, on the dev board, connect to UART. Find the port on which the devboard is connected. (https://docs.espressif.com/projects/esp-idf/en/stable/esp32/get-started/establish-serial-connection.html) When using WSL you have to bind and attach the USB devices in Windows first ( see https://learn.microsoft.com/en-us/windows/wsl/connect-usb#attach-a-usb-device).
6. Run idf.py -p <Port on which the ESP32 is connected> -b 460800 flash
7. Run idf.py -p <Port on which the ESP32 is connected> -b 115200 monitor. To exit, hit Ctrl + T and then Ctrl + X.