Source of library is available as separate Github repository: https://github.com/MaJerle/ESP_AT_Lib
Project page: http://majerle.eu/projects/esp-at-library-advanced-esp-at-commands-parser
Documentation: http://majerle.eu/documentation/esp_at/html/index.html
- Clone repository
- run
git submodule update --init --recursive
command to update all submodules