Firmware code useful for interconnecting ESP32 (or any Arduino board) to an LCD through MIPI DBI Type B interface. The code was used to test a connection between ESP32 (running Arduino) and R61529 based LCD.
There are two files: Arduino-basic.cpp and ESP32-specific.cpp
Arduino-basic.cpp should work on any Arduino based MCU, but it is quite slow. ESP32-specific uses ESP32 register to write data directly to the IO register. This code should work only on ESP32, but it is faster solution.
More information, how and where I have used these code snippets: https://daumemo.com/ips-capacitive-lcd-on-an-esp32-diy-generator-part-8/