Adafruit-Itsybitsy-M4

Caution

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Tip

When using this board with RIOT, set the BOARD variable to adafruit-itsybitsy-m4 in your Makefile. If you follow the standard RIOT project structure, your Makefile should look like this:

./Makefile

# name of your application
APPLICATION = hello-world

# Change this to your board if you want to build for a different board
BOARD ?= adafruit-itsybitsy-m4

# This has to be the absolute path to the RIOT base directory:
RIOTBASE ?= $(CURDIR)/RIOT

include $(RIOTBASE)/Makefile.include

Support for the Adafruit-Itsybitsy-M4

General information

This is a small formfactor (only 1.4” long by 0.7” wide) SAM D51 board made by Adafruit.

The board features one red LED (LD1), one DotStar / APA102 RGB LED, a reset button as well as 21 configurable external pins(6 of which can be analog in).

Links

• Overview
• Schematics

Flash the board

The board is flashed using its on-board boot loader.

The process is automated in the usual make flash target.

If RIOT is already running on the board, it will automatically reset the CPU and enter the bootloader. If some other firmware is running or RIOT crashed, you need to enter the bootloader manually by double tapping the board’s reset button.

Readiness of the bootloader is indicated by LD1 pulsing in red.

Accessing STDIO

The usual way to obtain a console on this board is using an emulated USB serial port.