MAX7219 LED display driver shield

Overview

This is a generic shield for LED matrix based on MAX7219. These displays have an SPI interface and usually only five pins: VCC, GND, DIN, CS, and CLK.

Current supported displays

Display	Controller	Shield Designation
No Name 8x8 pixel	MAX7219	max7219_8x8

Requirements

This shield can only be used with a board which provides a configuration for Arduino connectors and defines a node alias for the SPI interface (see Shields for more details).

Programming

Set -DSHIELD=max7219_8x8 when you invoke west build. For example:

# From the root of the zephyr repository
west build -b nrf52840dk_nrf52840 samples/drivers/display/ -- -DSHIELD=max7219_8x8