This library is a C++ version based on the HD44780 component of maxsydney. More information about his library at: https://github.com/maxsydney/ESP32-HD44780
Most of the methods are similar to the LiquidCrystal library commonly used for arduino.
An example of its implementation is in main.cpp
HD44780.cpp and HD44780.h must be placed inside the components directory or in a subfolder inside of this one. The corresponding CMakelists.txt must be inside the same directory where the mentioned .h and .cpp are located as in this repository.
The original main.c must renamed to main.cpp and also in the CMakelists.txt within the main directory.