26_if1_sfrw_bitfield_b.c [plain text]
typedef struct
{
unsigned short b0:1;
unsigned short b1:1;
unsigned short b2:1;
unsigned short b3:1;
unsigned short b4:1;
unsigned short b5:1;
unsigned short b6:1;
unsigned short b7:1;
unsigned short b8:1;
unsigned short b9:1;
unsigned short b10:1;
unsigned short b11:1;
unsigned short b12:1;
unsigned short b13:1;
unsigned short b14:1;
unsigned short b15:1;
} BitField;
#define SFRA (*((volatile BitField*)0x7f14))
unsigned short *pA = (unsigned short *) 0x7f14;
#define SFRB (*((volatile BitField*)0x7f10))
unsigned short *pB = (unsigned short *) 0x7f10;
char *
Do (void)
{
if (SFRA.b11)
{
if (SFRB.b11)
return "Fail";
else
return "Success";
}
else
return "Fail";
}
int
main (void)
{
*pA = 0xedcb;
*pB = 0x1234;
return Do ()[0] == 'F';
}