This is the documentation for the latest (main) development branch of Zephyr. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

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