Hi

typedef union {
        struct {
                int Bit0 : 1;
                int Bit1 : 1;
                int Bit2 : 1;
                int Bit3 : 1;
                int Bit4 : 1;
                int Bit5 : 1;
                int Bit6 : 1;
                int Bit7 : 1;
        } Bits;
        unsigned char Value;
} BitDataByte;

BitDataByte myData;

myData.Value = 42;

myData.Bits.Bit0 = 1;

Will get you started.. the ": 1" tells the compiler to allocate 1 bit to the
element, but you can allocate any number. So you can have a 2 or 3 or 14 bit
number as you choose. more details should be in your local C language book
:)

Cheers,
Ash.

---
Ashley Roll
Digital Nemesis Pty Ltd
www.digitalnemesis.com
Mobile: +61 (0)417 705 718




> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Sean H. Breheny
> Sent: Tuesday, 4 December 2001 8:47 AM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [pic]:Accessing a var as a byte or bits in C
>
>
> What is the syntax? I've been using C for 9 years (mostly on
> PCs but also
> on microcontrollers) and don't recall ever seeing it!
>
> Sean
>
> At 03:43 PM 12/3/01 -0500, you wrote:
> >Normal C has bitfields in it. Usually you use them in
> structs or unions.
> >Problem is you don't usually know which bit is assigned, so I prefer
> >assembly at that level of detail.
> >/\/\/\/*=Martin
>
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