Hi again,

I've almost finished setting up xenomai on my machine. I get very little time 
to work on this project, so wont get back to it until Saturday, but the next 
stage for me is getting the IO cards to work, and I thought I'd throw out an 
email as a precursor.

In this system we have a MEN M32 digital input card and an M28 digital output 
card. These come with Linux drivers, but they have to run through MEN's 
cross-platform driver API/framework, MDIS5. Previous versions of MDIS supported 
Xenomai and RTAI explicitly, but they seem to have dropped that support in the 
latest version, and I doubt the previous version will 'just work' with newer 
kernels. I have managed to successfully build the standard Linux MDIS drivers 
already.

MDIS adds so many layers of obfuscation and abstraction that on a previous 
occasion when I was attempting to get some M62 analogue output cards to work on 
a VMEbus VXworks platform I gave up on MDIS and wrote a new driver from 
scratch. 

Since Linux drivers are more complex to start with, and then there is Xenomai 
as well, and time is tight, I'd rather not do that for these cards. 

Does anyone have experience of using MEN drivers/IO cards in Xenomai? Can I 
simply wrap the MDIS API with the Xenomai API (described here 
http://www.xenomai.org/documentation/xenomai-2.5/html/api/index.html) once I've 
crawled my way through their code? Is there an easier way?

Also, I presume that as a temporary fall-back I can use the standard, non-RT 
drivers from Xenomai user-land processes?

Many thanks,
Edward

Control Systems Engineer
Oxford Technologies Ltd
7 Nuffield Way, Abingdon, Oxon, OX14 1RJ
Tel: +44 (0)1235 522119 


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