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Topic: Won't work as library (Read 358 times) previous topic - next topic



This is my first post on this forum, I would appreciate any help you could give. 

I have a class that points one of a union of pointers at a variable from the program and updates it during an interrupt service routine.  I have to use the pointer because the ISR can take no arguments and I do not know until run-time which variable will be attached.  I am using a union because I don't know until run-time which type the variable will be. 

The code attached to this post works.  It works great for what I want on Arduino.  But when I put the header and program in separate files and make a library, it still compiles, but the variable doesn't get updated.  I have done some debugging and I know the ISR is being fired.  For some reason the pointer is not being dereferenced to my variable.  But again, if I copy out all the parts from .h and .cpp files and put them back into the sketch, things work fine.

I'm sure I'm missing an #include in this header or something. 


Written this way, all in one sketch, the program works.  I am not seeing any errors either way, only the number doesn't change.

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