Re: [ts-7000] Cygwin/RTAI/TS-7250/SPI Interrupt build environment question.

First question -- have you built a kernel
that is rtai enabled?

 wrote on 05/07/2007 12:46:58
PM:

> I am somewhat new to embedded Linux development and have a build
> environment question.
> 
> I am using the TS-7250 board. What I want to do is to have it
> connected to another micro that will send it data via the SPI.
> 
> I am using Cygwin with the provided crosstool chain (from the provided
> CD) to do development. I have written a small piece of test code that
> enables the SPI and dumps out some dummy data. I am convinced this
> works by placing the scope on the SPI outs and seeing activity there.
> 
> Now, I need to write an ISR to catch the SPI RX interrupt and take
the
> input data from the DR and store it somewhere. (At least, that is
what
> I think I need to do?)
> 
> So my main question is regarding the interrupt and the ISR handling.
> 
> I have seen that I need to use the RTAI function calls to do this
but
> am not sure how to build this. I untarred the RTAI stuff in my cygwin
> directory. However it appears that I need to perform some sort of
> build or configuration on the RTAI stuff before I can build any of
my
> code that calls these functions.
> 
> Is it possible to develop in this fashion, where I compile my code
> using RTAI calls on my PC and then transfer the compiled binary over
> and run it?
> 
> Also, I am confused on what number the interrupt is. I see the chart
> from the EP9301 PDF, is the number listed there the one I can pass
> into the RTAI API function call, or is there some sort of translation
> I need to be aware of?
> 
> 
> 
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