Adafruit Grand Central M4 Express

Support for the Adafruit Grand Central M4 Express. More...

Detailed Description

Support for the Adafruit Grand Central M4 Express.

General information

Picture of the Adafruit Grand Central M4 Express

The main features of the board are:

• ATSAMD51 Cortex M4 running at 120 MHz
• Hardware DSP and floating point support
• 1 MiB Flash
• 256 KiB RAM
• external 8 MB QSPI Flash storage
• 32-bit, 3.3V logic and power
• Micro SD Card slot connected to SPI
• native USB

Pinout

Official Pinout of the Grand Central M4 Express

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 LED pulsing in red.

Accessing STDIO

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

Files
file	arduino_iomap.h
	Mapping from MCU pins to Arduino pins.
file	board.h
	Board specific definitions for the Adafruit Grand Central M4 Express.
file	gpio_params.h
	Board specific configuration of direct mapped GPIOs.
file	periph_conf.h
	Configuration of CPU peripherals for the Adafruit Grand Central M4 Express.