I've ran into the problem when I tried to write simple port manipulation macros for avr
#define MOTOR_CONTROL_PIN PORTC,1 #define set_port_pin(port, pin) (port |= (1<<pin)) when I try to use this macro like this: set_port_pin(MOTOR_CONTROL_PIN); I get preprocessor error, saying that set_port_macro expects 2 arguments and I pass only 1 When I rewrite the program and instead of defining macro set_port_pin I write a function which does the same, the program compiles without error. So the only reason for this I think is that preprocessor doesnt expand MOTOR_CONTROL_PIN macro when it's used as parameter to another macro. Any ideas? Regards, Giorgi Kvirkvia
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