Led matrix with HT1632C controller (1)

Few weeks ago I brought from SureElectronics a led matrix display. The product is made by 4 8×8 led matrices and an Holtek HT1632C controller: In this first tutorial, I’m going to show how to communicate with control chip… COMMUNICATION PROTOCOL HT1632C chip implements a protocol similar to SPI; you can control the chip through 3 pins: CS (chip select)…