Epson XV7021BB SPI Driver for Arduino This is an example test library for the Epson XV7021BB using the 4-wire SPI interface. It is developed on the Arduino Zero or Teensy 3.6 development board ...
The code is extracted from GxTFT and adapted for single controller use and Adafruit_GFX. Can be used with the "special" SPI circuit found on RPi and Waveshare TFTs ...
How often have you pulled out old MCU-based project that still works fine, but you have no idea where the original source code has gone? Having the binary image and the source code as separate things ...