Atmel SAM D20 Xplained Pro

Support for the Atmel SAM D20 Xplained Pro board. More...

Detailed Description

Support for the Atmel SAM D20 Xplained Pro board.

Overview

The SAMD20 Xplained Pro is an ultra-low power evaluation board by Atmel featuring an ATSAMD20J18 SoC. The SoC includes a SAMD20 ARM Cortex-M0+ micro- controller. For programming the MCU comes with 32Kb of RAM and 256Kb of flash memory.

Hardware

samd20-xpro image

MCU

MCU ATSAMD20J18A
Family ARM Cortex-M0+
Vendor Atmel
RAM 32 KiB
Flash 256 KiB
Frequency up to 48MHz
FPU no
Timers 8 (16-bit)
ADCs 1x 12-bit (20 channels)
UARTs max 6 (shared with SPI and I2C)
SPIs max 6 (see UART)
I2Cs max 6 (see UART)
Vcc 1.62V - 3.63V
Datasheet Datasheet
Board Manual Board Manual

User Interface

1 User button and 1 LED:

Device PIN
LED0 PA14
SW0 (button) PA15

Flashing the device

Connect the device to your Micro-USB cable using the port labeled as DEBUG USB.

The standard method for flashing RIOT to the samd20-xpro is using OpenOCD.

Refer to https://github.com/RIOT-OS/RIOT/wiki/OpenOCD for general instructions on building OpenOCD and make sure "cmsis-dap" and "hidapi-libusb" are enabled.

On Linux you will have to add a udev rule for hidraw, like

bash
echo 'KERNEL=="hidraw*", SUBSYSTEM=="hidraw", MODE="0664", GROUP="plugdev"' \
| sudo tee -a /etc/udev/rules.d/99-usb.rules
sudo service udev restart

Arch Linux

With yaourt:

yaourt -S hidapi-git
yaourt -S openocd-git
# edit PKGBUILD, add "cmsis-dap hidapi-libusb" to "_features"

Ubuntu

Although this refers to setting up the SAMR21, this guide is still very helpful to understanding how to set up a solid RIOT development environment for the SAMD20: http://watr.li/samr21-dev-setup-ubuntu.html

Supported Toolchains

For using the samd20-xpro board we strongly recommend the usage of the GNU Tools for ARM Embedded Processors toolchain.

Known Issues / Problems

Files

file  board.h
 Board specific definitions for the Atmel SAM D20 Xplained Pro board.
 
file  gpio_params.h
 Board specific configuration of direct mapped GPIOs.
 
file  periph_conf.h
 Configuration of CPU peripherals for the Atmel SAM D20 Xplained Pro board.