Want to define a single macro.Is it possible?

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Hi guys
I am using ARM controller and want to change the state of pin ( 0 or 1) which i assigned as OUTPUT.
The port output register in arm is GPIOx_PDOR which is 32bit.
where x is port A,B,C..etc

i have made a macro like
Code: 
#define DATA(x)	  GPIOB_PDOR |= (x<<2) & 0xFFFFFFFF

initially i high some pins by loading this value
Code: 
GPIOx_PDOR = 0x06000080;
Suppose i want to high pin 3 i set
Code: 
DATA(1)
then it will set PIN 3 HIGH with previously pins remain same, and it works fine. GPIOx_PDIR now has a value 0x06000084

when i set pin 3 to low
Code: 
DATA(0)
the code have no effect. GPIOx_PDIR has the same value 0x06000084; But what i required is 0x06000080

After analyzing the macro i conclude that OR operation is not changing the state of the pin

so i write 2 seperate macro's like that
Code: 
#define DATA_1(x)	GPIOB_PDOR |= (x<<2) & 0xFFFFFFFF
#define DATA_0(x)	GPIOB_PDOR &= (x<<2) | 0xFFFFFFF0

when i load DATA_1(1) it works fine and when i load DATA_0(0) it also works fine

My Question is that can i write a single macro which perform both functions? like if receive 1 OUTPUT becomes HIGH and if receive 0 OUTPUT becomes LOW?
Also by using the 2nd macro i am restricted to change the state of only 3rd pin, if i want any other pin to go low i can't.
 

Re: want to define a single macro.Is it possible?

void PIN_SW (uint32_t pin, bool state){
(state) ? DATA_1(pin) : DATA_0(pin);}
But I'm not sure, that GPIOB_PDOR have read access.
 

Re: want to define a single macro.Is it possible?

void PIN_SW (uint32_t pin, bool state){
(state) ? DATA_1(pin) : DATA_0(pin);}
Click to expand...
why are state and pin for?
they should be same.it represent logic level HIGH or LOW

your function also uses the 2 macros.
 

Re: want to define a single macro.Is it possible?

Easyrider83 said:
void PIN_SW (uint32_t pin, bool state){
(state) ? DATA_1(pin) : DATA_0(pin);}
Click to expand...
This is not a macro...

I had to think a while about it but I can propose something like that (tested only on MSVC compiler and works for me)
Code: 
struct enumeration {
	union 
	{
		unsigned char r;
		struct {
			int a : 1;
			int b : 1;
			int c : 1;
			int d : 1;
			int e : 1;
			int f : 1;
			int g : 1;
			int h : 1;
		};
	};
};

#define SET_D(bit) ((enumeration*)(&GPIOB_PDOR))->d = bit;
 

You could consider something like that (not tested):
Code C - [expand]
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#define DATA(x,y) \
#if (y==1) \
GPIOB_PDOR |= (x<<2) & 0xFFFFFFFF \
#elif (y==0) \
GPIOB_PDOR &= (x<<2) | 0xFFFFFFF0 \
#else \
#pragma message "invalid argument" \
#endif
 

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