topic Re: Call a subroutine from a separate file in CodeWarrior for MCU

Call a subroutine from a separate file

sctang — Thu, 13 Jan 2011 22:48:52 GMT

Hello,

It is my first time to write an application with a main program in a file and several subroutines in different files for a HCS08QE MCU. Attached is a program for testing. After compling it, I got the following message:

A13003: Value is truncated to one byte

SR_Test.asm line 3

A13003: Value is truncated to one byte

SR_Test.asm line 4

A1104: Undeclared user defined symbol: PTCD

SR_Test.asm line 3

Compile failed

The compiler regards the command "BSET 7,PTCD" in the main program as a direct addressing instruction since the address of PTCD is 0x04. However, it is not the case for the same command in the subroutine.

I tried many times by adding XDEF, XREF, XREF.B to the .asm files, and the object code file to Project.prm, but I got other error messages.

Please give me advice because I have spend a long time to learn this which should be a straightforward issue.

Thanks.

Re: Call a subroutine from a separate file

CrasyCat — Thu, 13 Jan 2011 23:11:00 GMT

Hello

I assume you want to build the 2 .asm file separately and then link them together.

Am I right?

Then you should

1- Create a file SR_Test.inc, where you have declaration for all symbols from SR_Test.asm

that are visible from outside of the file.

2- Include that .inc file in main.asm and remove include from SR_Test.asm

3. In SR_Test.asm, include directive.inc and make label SR_Test_Function visible from

outside of the module (using directive XDEF)

CrasyCat

Re: Call a subroutine from a separate file

sctang — Fri, 14 Jan 2011 19:37:51 GMT

Thank you, CrasyCat,

It works. This is what I need.

sctang