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Support for the Adafruit-Itsybitsy-M4. More...

Detailed Description

Support for the Adafruit-Itsybitsy-M4.

General information

Adafruit-Itsybitsy-M4 compared to a quarter dollar

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).


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.


file  board.h
 Board specific definitions for the Adafruit ItsyBitsy M4.
file  gpio_params.h
 Board specific configuration of direct mapped GPIOs.
file  periph_conf.h
 Configuration of CPU peripherals for the Adafruit ItsyBitsy M4.