Accessing hardware on the Edison?

Workshopshed over 7 years ago

I'm wondering about accessing the GPIO of the Edison in high-level languages such as Python or Node.

So far I've found MRAA but wondered if there are other options?

https://github.com/intel-iot-devkit/mraa

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jasonwier92 over 7 years ago +3

MRAA should be the way to go. Looks like they have Python interface. Check out this link: Getting Started With Intel Edison - Python Programming - All I cannot wait to play with Python and Node on the…
Former Member over 7 years ago +2

If you can access the gpio through the standard linux filesystem method it should be possible to write out the bash commands in Python using os.popen e.g. import os p = os.popen("echo 1 > /sys/class/gpio…
mcb1 over 7 years ago in reply to konstantinoskonstas +2

I'm learning as I go. I've always said I'm more a hardware guy that pokes and prods at software. I was hoping to get a head start on you guys/gals ...

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Workshopshed over 7 years ago

I just spotted UPM, runs on top of MRAA and provides a further abstraction so you can programme with LEDs and Light Sensors rather than working at the Pin level

https://github.com/intel-iot-devkit/upm
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mcb1 over 7 years ago in reply to Workshopshed

Following our conversation yesterday ...

I did some searching and it turns out that the version of mraa-gpio is not the latest.

From here https://github.com/intel-iot-devkit/mraa

https://github.com/intel-iot-devkit/mraa#installing-on-intel-32bit-yocto-based-opkg-imageInstalling 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-dev/opkg/i586" > /etc/opkg/mraa-upm.conf
opkg update
opkg install mraa

it took a few minutes

root@Edison_2:~# echo "src mraa-upm http://iotdk.intel.com/repos/3.5/intelgalactic/opkg/i586" > /etc/opkg/mraa-upm.conf
root@Edison_2:~# opkg update
Downloading http://iotdk.intel.com/repos/3.5/intelgalactic/opkg/i586//Packages.
Updated list of available packages in /var/lib/opkg/iotkit.
Downloading http://iotdk.intel.com/repos/3.5/iotdk/edison/all/Packages.
Updated list of available packages in /var/lib/opkg/iotdk-all.
Downloading http://iotdk.intel.com/repos/3.5/iotdk/edison/core2-32/Packages.
Updated list of available packages in /var/lib/opkg/iotdk-core2-32.
Downloading http://iotdk.intel.com/repos/3.5/iotdk/edison/edison/Packages.
Updated list of available packages in /var/lib/opkg/iotdk-edison.
Downloading http://iotdk.intel.com/repos/3.5/intelgalactic/opkg/i586/Packages.
Updated list of available packages in /var/lib/opkg/mraa-upm.
root@Edison_2:~# opkg install mraa
Upgrading mraa from 1.0.0-r0 to 1.5.1 on root.
Downloading http://iotdk.intel.com/repos/3.5/intelgalactic/opkg/i586/mraa_1.5.1_i586.ipk.
Removing package mraa-dev from root...
Removing package mraa-doc from root...
Removing obsolete file /usr/lib/libmraa.so.1.0.0.
Configuring mraa.
root@Edison_2:~# /usr/bin/mraa-gpio version
Version v1.5.1 on Intel Edison
root@Edison_2:~#

and now I have version 1.5.1

Mark

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