lpac/docs/ENVVARS.md

Environment Variables

General

• LPAC_APDU: specify which APDU backend will be used. Values:
  • at: use AT commands interface used by LTE module
  • pcsc: use PC/SC Smart Card API
  • stdio: use standard input/output
  • GBinder-based backends for libhybris (Halium) distributions:
    • gbinder_hidl: use HIDL IRadio (SoC launched before Android 13)
• LPAC_HTTP: specify which HTTP backend will be used.
  • curl: use libcurl
  • stdio: use standard input/ouput
• AT_DEVICE: specify which serial port device will be used by AT APDU backend.
• INTERFACE_SELECT_ENV: specify which PC/SC interface will be used by PC/SC APDU backend.

Debug

• LIBEUICC_DEBUG_APDU: enable debug output for APDU.
• LIBEUICC_DEBUG_HTTP: enable debug output for HTTP.
• AT_DEBUG: enable debug output for AT APDU backend.
• GBINDER_APDU_DEBUG: enable debug output for GBinder APDU backend. MUST be true to take effect.