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C Preprocessor levels - gripen_fighters - Jan 24 1:17:10 2012

Is there an option to specify IAR preprocessor to add some levels of recursion?

Here is my problem. I have the following defines:

#define GPIO_PORT1 P1
#define PortHigh(port, pin) port##OUT |= pin

When I use the macro PortHigh(GPIO_PORT1, BIT2);
the output is GPIO_PORT1OUT |= BIT2; which is wrong, and different from P1OUT |= BIT2;

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Re: C Preprocessor levels - distantship101 - Jan 24 2:37:47 2012

Just use an intermediate macro:

#define GPIO_PORT1 P1
#define POUT(port) port##OUT
#define PortHigh(port, pin) POUT(port) |= pin

--- In m..., "gripen_fighters" wrote:
>
> Is there an option to specify IAR preprocessor to add some levels of recursion?
>
> Here is my problem. I have the following defines:
>
> #define GPIO_PORT1 P1
> #define PortHigh(port, pin) port##OUT |= pin
>
> When I use the macro PortHigh(GPIO_PORT1, BIT2);
> the output is GPIO_PORT1OUT |= BIT2; which is wrong, and different from P1OUT |= BIT2;
>