Kaare Mai

Simple interrupt sample

Discussion created by Kaare Mai on Jan 14, 2011
Latest reply on Jan 20, 2011 by Kaare Mai

Hi,

 

I have been using the past two days just to get our new MCF51AC256 to run a simple piece of software. We use Codewarrior 10 (Eclipse based version).

 

Just to learn the MCU i created a simple C project wich configures the RTI to run every 1mS. Then inside the interrupt i toggle an LED output everytime a static counter reaches 500.

 

However, the interrupt is never called and i can't find any working source of information about how to setup a simple interrupt routine in the confusing documentation!

 

Also, i can't seem to grasp the difference between exceptions and interrupts as the 8-bit MCU's we've been working with until now never had anything called exceptions.

 

Last thing, if i use the keyword interrupt, _interrupt, _interrupt_ or _declspec(interrupt) eclipse marks it as syntax error.

 

So could someone please provide a simple, working example of how to use for example the RTI interrupt in a C project within CW 10?

 

Thanks in advance

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