Re: Accessing Raspberry Pi GPIO through EPICS

["Florian Feldbauer" <florian@ep1.ruhr-uni-bochum.de>]

Hey Peter,

to access the GPIOs from EPICS you need to write a device support module using the C-libraries.

Unfortunately there is no good documentation on this topic for beginners that I know of...
I could provide you my device support for reading out DS18S20 Dallas-1-Wire Temperature sensors using the Pi as a starting point.

Best regards,
Florian

On 08/14/2013 02:09 AM, Peter Linardakis wrote:

Hello all...

We are exploring the idea of using Raspberry Pi for basic digital IO tasks.  The idea is that we could avoid deploying other IOCs and possibly wasting many other IOC ports.  I have EPICS running on a Raspberry Pi with a test record DB (soft records only) and it is successfully communicating across the network.  I know how to directly access the GPIO pins while on the Pi (through C libraries etc.), but I do not know the first thing about how to get to those pins through EPICS.

Any advice or direction would be much appreciated.  I am relatively new to EPICS development but am experienced with with maintenance of EPICS records and the like.

Regards
Peter

Dr Peter Linardakis

Accelerator Research &Development Engineer

Nuclear Physics | Research School of Physics and Engineering

Australian National University

e: peter.linardakis@anu.edu.au

p: (02) 6125 2862

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