C1815 Error When Variable is Already Declared

AdrianoE — Wed, 17 Feb 2010 23:57:02 GMT

Hello,

I'm working on a project right now, and am having an annoying problem. The project is mostly done in C, with a few variable declarations in main.asm.

Codewarrior isn't recognizing the variables I'm declaring in main.asm. If I right-click the variable in main.c and select "Go to delcaration of X", it will go to the main.asm file where I declared it.

However, when I try to debug the project, the compiler says the variable hasn't been declared. Here are a few snippits of my code...

MAIN.ASM (the important variables here are the RAM_Lines)

; export symbols
            XDEF asm_main
            ; we use export 'Entry' as symbol. This allows us to
            ; reference 'Entry' either in the linker .prm file
            ; or from C/C++ later on

; Include derivative-specific definitions
       INCLUDE 'derivative.inc'


; variable/data section
DEFAULT_RAM: SECTION
; Insert here your data definition.
;

temp_byte ds.b 1
RAM_line1 ds.b 16
RAM_line2 ds.b 16
RAM_line3 ds.b 16
RAM_line4 ds.b 16
SCI_RX_buf ds.b 16

; code section
MyCode:     SECTION

; this assembly routine is called by the C/C++ application
asm_main:
;          MOVB   #1,temp_byte   ; just some demonstration code
            NOP                   ; Insert here your own code

            RTC                   ; return to caller

MAIN.C

void main(void) {

EnableInterrupts;
asm_main();

strncpy(&RAM_line1[0],&line1[0],16); //Before we start, we copy down the intro screen from
strncpy(&RAM_line2[0],&line2[0],16); // flash into the RAM buffer used for the LCD
strncpy(&RAM_line3[0],&line3[0],16);
strncpy(&RAM_line4[0],&line4[0],16);

...

Once Codewarrior gets to strncpy(&RAM_line1[0],&line1[0],16);, it gives me an error (C1815), for all of the lines.

None of this is my code, it's code one of my teachers is having us put in our project. The project itself isn't about fixing this error, so I should be OK in posting this annoying error here.

Thanks in advance,

Adriano

Re: C1815 Error When Variable is Already Declared

kef — Thu, 18 Feb 2010 00:47:18 GMT

This makes symbol asm_main visible to other modules:

XDEF asm_main

without XDEF you would be unable to reference asm_main from any other C or ASM file. You should XDEF all variables you are trying to reference from main.c.

XDEF RAM_line1, RAM_line2, RAM_line3, RAM_line4

Re: C1815 Error When Variable is Already Declared

AdrianoE — Fri, 26 Feb 2010 07:22:06 GMT

Sorry for the delayed reply, but thanks it does work now.

CodeWarrior for MCU中的主题 Re: C1815 Error When Variable is Already Declared

C1815 Error When Variable is Already Declared

Re: C1815 Error When Variable is Already Declared

Re: C1815 Error When Variable is Already Declared