On GitHub, arduino/ArduinoCore-samd has picked up 502 stars, C. Arduino Core for SAMD21 CPU
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This repository contains the source code and configuration files of the Arduino Core
for Atmel's SAMD21 processor (used on the Arduino/Genuino Zero, MKR1000 and MKRZero boards).
Installation on Arduino IDE
This core is available as a package in the Arduino IDE cores manager.
Just open the "Boards Manager" and install the package called:
"Arduino SAMD Boards (32-bit ARM Cortex-M0+)"
Support
There is a dedicated section of the Arduino Forum for general discussion and project assistance:
http://forum.arduino.cc/index.php?board=98.0
Bugs or Issues
If you find a bug you can submit an issue here on github:
Copy or symlink the api folder from the ArduinoCore-API repo:
ln -s <ARDUINO_CORE_API>/api .
where <ARDUINO_CORE_API> is the location where you've cloned the ArduinoCore-API repository to.
Restart the IDE.
Hourly builds
This repository is under a Continuous Integration system that every hour checks if there are updates and
builds a release for testing (the so called "Hourly builds").
The hourly builds are available through Boards Manager. If you want to install them:
Open the Preferences of the Arduino IDE.
Add this URL http://downloads.arduino.cc/Hourly/samd/package_samd-hourly-build_index.json in the Additional Boards Manager URLs field, and click OK.
Open the Boards Manager (menu Tools->Board->Board Manager...)
Install Arduino SAMD core - Hourly build
Select one of the boards under SAMD Hourly build XX in Tools->Board menu
Compile/Upload as usual
If you already installed an hourly build and you want to update it with the latest:
Open the Boards Manager (menu Tools->Board->Board Manager...)
Remove Arduino SAMD core - Hourly build
Install again Arduino SAMD core - Hourly build, the Board Manager will download the latest build replacing the old one.
License and credits
This core has been developed by Arduino LLC in collaboration with Atmel.
Copyright (c) 2015 Arduino LLC. All right reserved.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Yes — arduino/ArduinoCore-samd ships under the LGPL-2.1 license, which makes its source code freely readable (and, depending on license terms, forkable and reusable). Source: github.com/arduino/ArduinoCore-samd.
What is arduino/ArduinoCore-samd?
arduino/ArduinoCore-samd (arduino/ArduinoCore-samd) is a C project on GitHub. From the project's own README: Arduino Core for SAMD21 CPU
Where do I read more about arduino/ArduinoCore-samd?
This TopGit page is a snapshot — the READ ME tab shows the project's own README content (links stripped, images preserved). The GitHub repository at github.com/arduino/ArduinoCore-samd is the definitive source.
Read full README in the tab above.
Is ArduinoCore-samd worth your time?
ChatGPT, Claude and Perplexity can all read this page. Ask one of them what it makes of ArduinoCore-samd.