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Designing Embedded Systems with PIC Microcontrollers, 2nd Edition by Tim Wilmshurst

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CHAPTER 17. More C and the wider C environment
We have now reached a stage at which we should have some level of confidence in writing simple C programs for the PIC microcontroller. There still remain gaps in our knowledge, however. One of these is the use of interrupts. An exploration of this takes us to the very boundary of how C is used and actually makes us step outside the language altogether. Furthermore, as our programs become bigger, it is useful to know about the wider environment in which we are programming, for example those other files which we link in or include. We have used these so far with little knowledge of how they work.
The aims of this chapter are therefore twofold. One is to develop knowledge of language aspects which ...

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