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Dynamic C Output macro

Hi,

Im just new to the rabbit platform, and i am trying to make macro's to set pins and clear them.

Ive created this three Macro's to set or get the value from a pin: #define setPin(p,b,highval) BitWrPortI(p,& ## p ## Shadow,highval,b) #define clearPin(p,b,highval) BitWrPortI(p,& ## p ## Shadow,highval ^ 1,b) #define getPin(p,b) BitRdPortI(p,b)

If i use the macro's manually the SetPin and ClearPin work perfectly, but i want to put the pins in a define. I've given pin Names (like DO_0, DI_1, DO_4), they are defined as following: #define DO_1 PEDR,4,1 #define DO_2 PEDR,5,1 #define DO_3 PEDR,6,1 #define DO_4 PEDR,7,1 #define DO_5 PEDR,3,1

when i execute the macro's with DO_1 as argument the compiler gives the following error:: "Wrong number of arguments in macro call."

What do i need to adjust to get this working?

Thanks in advantage,

Michiel

Reply to
gieltjev
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Try this #define setPinHelper(p,b,highval) BitWrPortI(p,& ## p ## Shadow,highval,b) #define setPin(v) setPinHelper(v)

setPin(DO_1)

Macro arguments don't get expanded until after the macro has been invoked.

Reply to
gamma

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