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Interrupt Service Routines To use the macros that identify a function as an interrupt service routine, you must include the #include <sys/attribs.h> file.
extern "C" void _ISR(vector, IPLn[SRS| SOFT| AUTO]) functionName();
Parameter Description Possible Values vector PIC32 Interrupt Vector Number see here IPLn[SRS|SOFT|AUTO] Interrupt Priority Level and Context Save Method n is a value from 0 to 7
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