Contant pointers in C

[parveen]

Posted on December 22, 2003 at 05:36

Contant pointers in C

[parveen]

Posted on December 11, 2003 at 00:44

Has anyone tried to use pointer declaration with const prefix in C. Normally any declaration with const prefix goes to ROM or const segment but when I declare a pointer array with const prefix it goes to data segment.

const unsigned char * MyPtr[]={};

I want MyPtr to be stored in ROM

I have tried this with both Metrowerks and Cosmic compliers

Thanks in advance,

Regards,

praveenG

[seeguard]

Posted on December 11, 2003 at 06:17

Try this:

#pragma INTO_ROM

const unsigned char * MyPtr[]={};

then look in the MAP file and check:

- VARIABLES:

MyPtr address len ( 2) ROM_VAR

atz

[parveen]

Posted on December 11, 2003 at 10:53

Thanks a lot

It really works for Metrowerks. Could you suggest some method for Cosmic compiler also.

Does anyone knows how to do the same for cosmic compiler????

Thanks again

Regards,

PraveenG

[sjo]

Posted on December 11, 2003 at 20:33

To make the pointer constant in cosmic do the following:

const unsigned char * const pString = ''string'';

Regards

sjo

[parveen]

Posted on December 12, 2003 at 06:01

Thanks a lot

it works for cosmic also

Regards,

PraveenG

[parveen]

Posted on December 22, 2003 at 05:36

I recently found out that Metrowerks has one technical note on this topic

Refer TN102:Contant pointer and pointer to constant (Search TN102 on www.metrowerks.com)

Regards,

Parveen

[ This message was edited by: praveenG on 22-12-2003 10:07 ]