MPLAB linker. Link step failed.. can not fit section

[quote]Executing: "C:\MCC18\bin\mcc18.exe" -p=18F4550 /i"C:\MCC18\h"
"enumeration_na_ni.c" -fo="enumeration_na_ni.o" -D__DEBUG -mL
MPLAB C18 v3.22 (demo)
Copyright 2000-2008 Microchip Technology Inc.
Days remaining until demo becomes feature limited:  10

WARNING:  The procedural abstraction optimization will not be supported
when the demo becomes feature limited.

Executing: "C:\MCC18\bin\mcc18.exe" -p=18F4550 /i"C:\MCC18\h" "SPI.c"
-fo="SPI.o" -D__DEBUG -Ou- -Ot- -Ob- -Op- -Or- -Od- -Opa-
MPLAB C18 v3.22 (demo)
Copyright 2000-2008 Microchip Technology Inc.
Days remaining until demo becomes feature limited:  10
Executing: "C:\MCC18\bin\mcc18.exe" -p=18F4550 /i"C:\MCC18\h" "error.c"
-fo="error.o" -D__DEBUG -mL
MPLAB C18 v3.22 (demo)
Copyright 2000-2008 Microchip Technology Inc.
Days remaining until demo becomes feature limited:  10

WARNING:  The procedural abstraction optimization will not be supported
when the demo becomes feature limited.

Executing: "C:\MCC18\bin\mplink.exe" /l"C:\MCC18\lib"
"..\..\..\..\..\..\MCC18\lkr\18f4550.lkr" "enumeration_na_ni.o" "SPI.o"
"error.o" /u_CRUNTIME /u_DEBUG /z__MPLAB_BUILD=1 /z__MPLAB_DEBUG=1
/o"enumeration_na_ni.cof" /M"enumeration_na_ni.map" /W
MPLINK 4.22, Linker
Copyright (c) 2008 Microchip Technology Inc.
Error - section '.udata_enumeration_na_ni.o' can not fit the section.
Section '.udata_enumeration_na_ni.o' length=0x000007ea
Errors    : 1

Link step failed.
----------------------------------------------------------------------
Debug build of project `C:\Documents and Settings\user\Desktop\usb new
files\_my_works\feb_11dawn_enumeration\enumeration_na_ni.mcp' failed.
Preprocessor symbol `__DEBUG' is defined.
Sun Mar 01 23:26:58 2009
----------------------------------------------------------------------
BUILD FAILED
[/quote]


This is the error message I got while compiling my code..
It failed on the linker, I assume my code is working properly now but
something is wrong with size I guess.
If you need to take a look at the code, I will be happy to email it for
you..
Please help, I'm very new to MPLAB..
Thanks

On Mar 1, 11:02=A0am, "urefowei" <urefo...@yahoo.com> wrote:

> Section '.udata_enumeration_na_ni.o' length=3D0x000007ea

Looks like you ran out of RAM. The part has only 2K (0x800) and some
of that is reserved for stack.

urefowei wrote:
> [quote]Executing: "C:\MCC18\bin\mcc18.exe" -p=18F4550 /i"C:\MCC18\h"
> "enumeration_na_ni.c" -fo="enumeration_na_ni.o" -D__DEBUG -mL
> MPLAB C18 v3.22 (demo)
> Copyright 2000-2008 Microchip Technology Inc.
> Days remaining until demo becomes feature limited:  10
> 
> WARNING:  The procedural abstraction optimization will not be supported
> when the demo becomes feature limited.
> 
> Executing: "C:\MCC18\bin\mcc18.exe" -p=18F4550 /i"C:\MCC18\h" "SPI.c"
> -fo="SPI.o" -D__DEBUG -Ou- -Ot- -Ob- -Op- -Or- -Od- -Opa-
> MPLAB C18 v3.22 (demo)
> Copyright 2000-2008 Microchip Technology Inc.
> Days remaining until demo becomes feature limited:  10
> Executing: "C:\MCC18\bin\mcc18.exe" -p=18F4550 /i"C:\MCC18\h" "error.c"
> -fo="error.o" -D__DEBUG -mL
> MPLAB C18 v3.22 (demo)
> Copyright 2000-2008 Microchip Technology Inc.
> Days remaining until demo becomes feature limited:  10
> 
> WARNING:  The procedural abstraction optimization will not be supported
> when the demo becomes feature limited.
> 
> Executing: "C:\MCC18\bin\mplink.exe" /l"C:\MCC18\lib"
> "..\..\..\..\..\..\MCC18\lkr\18f4550.lkr" "enumeration_na_ni.o" "SPI.o"
> "error.o" /u_CRUNTIME /u_DEBUG /z__MPLAB_BUILD=1 /z__MPLAB_DEBUG=1
> /o"enumeration_na_ni.cof" /M"enumeration_na_ni.map" /W
> MPLINK 4.22, Linker
> Copyright (c) 2008 Microchip Technology Inc.
> Error - section '.udata_enumeration_na_ni.o' can not fit the section.
> Section '.udata_enumeration_na_ni.o' length=0x000007ea
> Errors    : 1
> 
> Link step failed.
> ----------------------------------------------------------------------
> Debug build of project `C:\Documents and Settings\user\Desktop\usb new
> files\_my_works\feb_11dawn_enumeration\enumeration_na_ni.mcp' failed.
> Preprocessor symbol `__DEBUG' is defined.
> Sun Mar 01 23:26:58 2009
> ----------------------------------------------------------------------
> BUILD FAILED
> [/quote]
> 
> 
> This is the error message I got while compiling my code..
> It failed on the linker, I assume my code is working properly now but
> something is wrong with size I guess.
> If you need to take a look at the code, I will be happy to email it for
> you..
> Please help, I'm very new to MPLAB..
> Thanks
Old place to post a Question.  Microchips has a sub fourm for it USB chips.

You ran out of something.  Did it ever compiler are you using the 
Microchip USB Libray? Ar you using the linker file from one of their 
projects?  The USB buffer RAM is a special case and may require special 
handling.

Note PIC18 compilers have a compiled stack since the do not have any 
stack data opcodes.

urefowei schrieb:

> Error - section '.udata_enumeration_na_ni.o' can not fit the section.
> Section '.udata_enumeration_na_ni.o' length=0x000007ea
> Errors    : 1

The generated uninitialized data section with length of 2026 bytes does 
not fit into the device, which only has a total of 2048 bytes. In 
addition to this the PICs are limited to 4K of RAM minus one page (128 
byte) architecturally, so no 8 bit PIC device will ever have more than 
3968 bytes of RAM.

You have got exactly two options: either reduce RAM usage dramatically 
or use another architecture. Didn't I tell you this months ago?

-- 
Mit freundlichen Gr��en

Dipl.-Ing. Frank-Christian Kr�gel