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Linux Library for low speed IO Communication in C with bindings for C++, Python, Node.js & Java. Supports generic io platforms, as well as Intel Edison, Intel Joule, Raspberry Pi and many more.

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libmraa - Low Level Skeleton Library for Communication on GNU/Linux platforms ==============

Libmraa is a C/C++ library with bindings to Java, Python and JavaScript to interface with the IO on Galileo, Edison & other platforms, with a structured and sane API where port names/numbering matches the board that you are on. Use of libmraa does not tie you to specific hardware with board detection done at runtime you can create portable code that will work across the supported platforms.

The intent is to make it easier for developers and sensor manufacturers to map their sensors & actuators on top of supported hardware and to allow control of low level communication protocol by high level languages & constructs.

Build Status

Supported Boards

X86

ARM

USB

Mock

JSON platform

Installing on your board

Installing on Ubuntu

Here is a PPA for installing on ubuntu: https://launchpad.net/~mraa/+archive/ubuntu/mraa

sudo add-apt-repository ppa:mraa/mraa
sudo apt-get update
sudo apt-get install libmraa1 libmraa-dev mraa-tools python-mraa python3-mraa

Node.js package is available seperately.

Install on Arch Linux

There is an AUR package for mraa here: https://aur.archlinux.org/packages/mraa

Installing for Node.js only

You can also install just the node.js mraa module by using npm. You will need a C++ compiler and the node development headers, however it's not required to have SWIG installed.

npm install mraa

Note that installing mraa in this way builds mraa without json-c so you cannot use mraa_init_json_platform(). Also building this way means the mraa.node includes a static version of libmraa rather than relying on a dynamic library in /usr/lib.

Installing on Intel 32bit Yocto based opkg image

See the section below on compiling or use our repository to install on a glibc based yocto poky image that supports opkg. Adding this repository is as simple as and you'll have the latest stable tagged build of mraa installed!

echo "src mraa-upm http://iotdk.intel.com/repos/3.5/intelgalactic/opkg/i586" > /etc/opkg/mraa-upm.conf
opkg update
opkg install mraa

If you would like to get the latest & greatest builds from master HEAD you can use our -dev repository

echo "src mraa-upm http://iotdk.intel.com/repos/3.5/intelgalactic-dev/opkg/i586" > /etc/opkg/mraa-upm.conf
opkg update
opkg install mraa

Compiling

See documentation on building

Examples

See the examples available for various languages

Debugging

Sometimes it just doesn't want to work, let us try and help you, you can file issues in github or join us in #mraa on freenode IRC, hang around for a little while because we're not necessarily on 24/7, but we'll get back to you! Have a glance at our debugging page too.

API Documentation

Contact Us

To ask questions either file issues in github or send emails on our mailing list. You might also catch us on the mraa channel on freenode IRC.

See the Contribution documentation for more details.

Changelog

Version changelog here.

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Linux Library for low speed IO Communication in C with bindings for C++, Python, Node.js & Java. Supports generic io platforms, as well as Intel Edison, Intel Joule, Raspberry Pi and many more.

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