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Creating pointers to constants in PCD

 
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FvM



Joined: 27 Aug 2008
Posts: 2337
Location: Germany

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Creating pointers to constants in PCD
PostPosted: Fri Aug 29, 2008 3:50 am     Reply with quote
Hello,

the PCD manual contains the below example:

Code:
Creating pointers to constants
const char *cptr;
cptr = string;

But the compiler doesn't accept const char as a pointer definition, it requests a = for a constant definition.

Is the manual text written by mistake or is the compiler implementation yet incomplete?

Regards,
Frank
mr7
Guest
Found the same
PostPosted: Fri Aug 29, 2008 12:03 pm     Reply with quote
Running version 4.068 I get the same result.

Code:

const char *cptr;
cptr = string;



Code:

Expecting an =
Expecting a (
Expecting a (
Expecting a declaration
Ttelmah
Guest
PostPosted: Fri Aug 29, 2008 1:49 pm     Reply with quote
Try ROM instead.
On the other (non PCD) compilers, pointers to constants will work, but _only_ in some compiler modes. ROM used in the same way as const, functions much better. It may work for PCD as well.

Best Wishes
FvM



Joined: 27 Aug 2008
Posts: 2337
Location: Germany

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PostPosted: Fri Aug 29, 2008 4:39 pm     Reply with quote
Thanks, apparently, PCD isn't understanding the rom storage class modifier, at least not as synonymous for flash access.
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