c, macro with 2 arguments issue - 


#define led     3,3  #define gpiohigh(port,pin)  (lpc_gpio ## port->masked_access[(1<< pin)] = (1<< pin)) #define gpiolow(port,pin)   (lpc_gpio ## port->masked_access[(1<< pin)] = 0)  #define led_on()    gpiohigh(led) #define led_off()   gpiolow(led)

is not working, complaining gpiohigh() , low() needs 2 arguments. there magic trick out there?

"led" 3,3 interpreted single argument. complaining missing argument. macro substitutions not literal substitution of 1 another.


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