Hi,
I'm new on RT Linux programming and I need some suggestions:
I'm writing some software in order to have an automatic machine working,
i'll have all peripherals connected to my PC trough a Profibus card.
My machine is composed of various mechanical devices each one working
alone or, sometimes, in conjunction with the other one.
I want to write a very object oriented program in order to be able to
stop only one part of the machine, change the RT module that is
controlling it on the fly and start it again without stop the entire
machine.
If I'm not wrong, the best thing to do is to create some RT modules, and
exchange informations using FIFOs, but I think I'll have a lot of
informations to pass from a module to another and the ideal is to have
all tasks inside a single module; but how can I make an upgrade to one
task without unload all the module (and stop so the machine) ?
How can I create a kind of memory space shared between all my running
modules ?
I have read all the examples include in the distribution but I think
this is not enought.
For example, I made some tries, modifying these examples, and I created
a program with a frequency call that was smaller than the execution time
of my module ... the result: my PC was hanging and it took my a lot of
time to understand that this was the reason why !
I can't learn everyting by hitting my head on all problems.
I'm able to programming using C or C++ but, where can I found some
documentation to read so that I can learn RT Linux programming style ?
I found all the documentation concerning all RT functions, but I need to
learn how to progam under RT and know when I need to use certain
functions.
Thanks in advance.
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