In SX Microcontrollers, SX/B Compiler and SX-Key Tool, PJMonty wrote:

Stolzie,

It's not clear to me why you need to turn off interrupts.  You say that interrupts fire during the processing of your main routine.  So what?  Billions of CPUs around the world have interrupts fire off all the time.  The whole point of interrupts is that they fire off, get handled, and then return control to the main loop - all without affecting the main loop.

If you've got timing sensitive issues in your main loop, then perhaps you need to think about your software architecture and move the timing critical code to the interrupt itself.  One of the great things about interrupts is that they handle timing critical stuff all the time.  

If you have code that just sits in a loop until a count reaches a certain value before moving on, then you've got software that blocks and grinds to a halt all the time.  This type of code is hard to maintain over time as you are constantly trying to figure out how to keep things moving and stopping simultaneously.

Thank,
PeterM

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