STM32中位变量的实现

由于STM32没有位处理，所以STM32不像51单片机一样支持BIT变量，下面教大家怎么在STM32中实现位变量
1、首先定义一个结构体

typedef struct
{
    unsigned char  b0:1; 
    unsigned char  b1:1; 
    unsigned char  b2:1; 
    unsigned char  b3:1; 
    unsigned char  b4:1;
    unsigned char  b5:1;
    unsigned char  b6:1;
    unsigned char  b7:1;
} BIT8;

2、然后宏定义就行

unsigned char addrNewCode;

#define 	addrNewBit0        (((BIT8*) & addrNewCode) -> b0)
#define 	addrNewBit1        (((BIT8*) & addrNewCode) -> b1)
#define 	addrNewBit2        (((BIT8*) & addrNewCode) -> b2)
#define 	addrNewBit3        (((BIT8*) & addrNewCode) -> b3)
#define	    addrNewBit4        (((BIT8*) & addrNewCode) -> b4)
#define 	addrNewBit5        (((BIT8*) & addrNewCode) -> b5)
#define 	addrNewBit6        (((BIT8*) & addrNewCode) -> b6)
#define 	addrNewBit7        (((BIT8*) & addrNewCode) -> b7) 

3、这样的话addrNewBit0 等等就能当成位变量使用了