LedControl is an Arduino library for MAX7219 and MAX7221 Led display drivers. The code should work with most boards and architectures but I only test it for the ESP32 Dev Module. Feel free to create an issue if something is missing or not working correctly.
Documentation for the library is on the Github Project Pages
The lastest version of the Library is always available from the LedController Release Page
The library can be also installed using the standard Arduino library install procedure.