lpac/docs/backends/at.md

AT APDU Backend

The AT Backend is used to communicate with the eUICC via AT commands over a serial interface. It is commonly used with cellular modems that support AT commands for SIM card management.

Unix-like platform

If you need to allow non-root users to access serial ports, read the following article

1. https://help.ubuntu.com/community/DialupModemHowto/SetUpDialer#Configuring_the_dialup_connection_to_your_provider (Ubuntu)
2. https://manpages.debian.org/unstable/minicom/minicom.1.en.html#DEBIAN_SPECIFIC (Debian)
3. https://wiki.archlinux.org/title/Working_with_the_serial_console#Connect_using_a_terminal_emulator_program (Arch Linux)

Environment Variables

• LPAC_APDU_AT_DEVICE: specify which serial port device will be used by AT APDU backend.
  (string, default: /dev/ttyUSB0 on Unix-like platform and COM3 on Windows)
• LPAC_APDU_AT_DEBUG: enable debug output for AT APDU backend.
  (boolean, default: false)