General C coding notes and Examples

Conditional Compilation

A variable may be defined for conditional compilation which equates to a numeric value, such as for when you want to switch target processors in a C project.

//use variables to simplify complicated compilation
#DEFINE target 0    //0=PIC12F675 / 1=PIC16F88
#DEFINE debugme 1    //0=standalone / 1=debug

//Use #IF and #ENDIF, nested as needed
#IF target==0
    #INCLUDE <12F675.h>
    #DEVICE ADC=10
    #USE DELAY(CLOCK=4000000,RESTART_WDT)
    #USE FAST_IO(a)
    #FUSES wdt
#ENDIF

#IF target==1
    #INCLUDE <16F88.h>
    #IF debugme==1
        #DEVICE ICD=true
    #ENDIF
    #DEVICE ADC=10
    #USE DELAY(CLOCK=4000000)
    #USE FAST_IO(a)
    #USE FAST_IO(b)
    #FUSES nowdt
#ENDIF