Bit variables

[Daniel Wee]

Right now we can declare something like this:-

volatile struct {
unsigned char test1:1;
unsigned char test2:1;
unsigned char test3:1;
} myvar;

And we can then access it like this:-

myvar.test1 = 1;

But in the IAR compiler, you can do this:-

volatile struct {
unsigned char test1:1;
unsigned char test2:1;
unsigned char test3:1;
};

And you can access it like this:-

test1 = 1;

Similarly, in IAR you can do this:-

union {
ShiftReg;
struct {
unsigned char ShiftRegLSB :1;
unsigned char :1;
unsigned char :1;
unsigned char :1;
unsigned char :1;
unsigned char :1;
unsigned char :1;
unsigned char ShiftRegMSB :1;
};
};

And you can access it this way:-

ShiftReg = 0xFF;
ShiftRegLSB = 0;

Is it possible to have this feature in the new compiler?

Daniel