This example code demonstrates the use of the CH32V003 SPI peripheral with the WeAct Studio 1.54 inch e-paper module.
Version for the Franzininho Badge
As the CH32V003 does not have enough RAM to store a full bitmap image, a semigraphic characters approach is used.
A 12 line x 16 character screen is stored in the RAM, the graphic image is generated going through a 12x16 font stored in Flash.