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CCS equivalent or correct declaration

 
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gomond



Joined: 05 Nov 2008
Posts: 18

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CCS equivalent or correct declaration
PostPosted: Fri May 25, 2012 4:40 am     Reply with quote
Hi I am attempting to port some code that has been given to me in Hitech C format and I am unfamiliar with structures and unions, as I am a newbie.

I have fixed the structures by redefining the data types to the correct CCS ones.
But the union is giving me a headache.

************************************
Code:
                   
#define bool  unsigned char
#define u8    unsigned char
#define s8    signed   char
#define u16   unsigned int16
#define s16   signed   int16               
#define u32   unsigned int32   
#define s32   signed   int32
                                                           

#define PORTBIT(adr, bit) ((unsigned)(&adr)*8+(bit))

//------------------------
typedef struct     
{
   u8   L;
   u8   H;
} HL8;
                               
typedef union
{
   u16 _U16;     
   HL8 _U8;               
}HL16;

typedef struct
{
   u16   L;
   u16   H;
}HL32;

typedef struct
{
   s16   L;
   s16   H;
}HLS32;

// fixed point union 16.16               
union {
   HLS32  S16;  //[Error] Expecting an identifier, Expecting a declaration.
   HL32   U16;                               
   u8     U8[4];           
   u32    U32;     
   s32    S32;
} fp32;


***********************************************************

Thanks in advance.
Ttelmah



Joined: 11 Mar 2010
Posts: 19540

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PostPosted: Fri May 25, 2012 7:06 am     Reply with quote
Problem is re-use of names. Unless you have turned on #case, you already have s16 defined, which is the same as S16.....

Personally, even if you turn case on, I'd avoid re-using names that are the same except for a case change.

Best Wsihes
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