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Place a const at a fixed location?

 
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Guest
Place a const at a fixed location?
PostPosted: Wed Feb 10, 2010 8:12 am     Reply with quote
I want to place this line at fixed location in the code, how to do that?
Code:
Const char IDNr[] = {"hw:2.00 / fw:1.20"};


hints?
Wayne_



Joined: 10 Oct 2007
Posts: 681

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PostPosted: Wed Feb 10, 2010 10:52 am     Reply with quote
Look at #org in the help.
languer



Joined: 09 Jan 2004
Posts: 144
Location: USA

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PostPosted: Wed Feb 10, 2010 2:13 pm     Reply with quote
I've used something similar to the code shown in this post.

The location is usually the last implemented registers.

Example for 12F629:
Code:
#ORG 0x3D0,0x3DF
const char build_rev[] = {"Rev 1.0"};   // max length = 15
#ORG 0x3E0,0x3EF
const char build_date[] = __DATE__;      // max length = 15
#ORG 0x3F0,0x3FF
const char build_time[] = __TIME__;      // max length = 15

...

printf("%s\nBuild: \%s, \%s\n\r", build_rev, build_date, build_time);
Guest
PostPosted: Wed Feb 10, 2010 2:45 pm     Reply with quote
I dont understand I cant compile it when using the #ORG xx yy statement?
I get error...
I place the statement at the top of my main.c file.
PCM programmer



Joined: 06 Sep 2003
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PostPosted: Wed Feb 10, 2010 2:52 pm     Reply with quote
This post has an example of where to place the #org statement
in your program:
http://www.ccsinfo.com/forum/viewtopic.php?t=41440&start=3
Guest
PostPosted: Wed Feb 10, 2010 3:51 pm     Reply with quote
Thanks, But wont work.

I use:
Code:
#org 0x300, 0x310
Const Char IDNr[] = "v1.0";


And get this error:
Code:
*** Error 71 "main.c" Line 444(0,1): Out of ROM, A segment or the program is too large    @const76
Seg 00300-00310, 0012 left, need 0022


Its the same error even if I change the #org addr space?
PCM programmer



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PostPosted: Wed Feb 10, 2010 3:54 pm     Reply with quote
Post your PIC and your compiler version.
languer



Joined: 09 Jan 2004
Posts: 144
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PostPosted: Wed Feb 10, 2010 6:22 pm     Reply with quote
Also post the small program...

I believe this:
Code:
Const Char IDNr[] = "v1.0";

should read:
Code:
Const Char IDNr[] = {"v1.0"};


Your address looks pretty low too:
Code:
#org 0x300, 0x310


Normally you would place this at the top range of the code space.
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