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.asm include to another .asm help in Keil

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Nisar Ahmed

Mon Jul 27 2009, 10:25AM

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Hello everyone
I have a file" table.asm",I want to include with another file" main.asm".Plz help me how i call file "table.asm"in the file "main.asm".I have using Keil assembler.

Thanks in advance
Nisar Ahmed

M.Mohsin

Mon Jul 27 2009, 01:03PM

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have u added the file to your source group of "main.asm"?

Ajay Bhargav

Mon Jul 27 2009, 03:22PM

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there are rules to follow when writing distributed assembly code..
you can download the PDF document from download section regarding Assembly programming in keil.

look for the use of keyword
"extrn" and "segment code" etc.

ajayhhh

Tue Jul 28 2009, 02:37PM

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Joined: Wed Jul 22 2009, 03:27PM
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hi guys.. can any 1 post a ScreenShot of them working with multi-file (asm)..
i wana see the declarations made in main pgm and sub-pgms..

Nisar Ahmed

Wed Jul 29 2009, 04:39AM

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Joined: Sat May 26 2007, 02:27AM
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Posts: 465

Now it's ok
In" main.asm" file .I use directive #include<table.asm>

Regards
Nisar Ahmed

Ajay Bhargav

Wed Jul 29 2009, 05:16PM

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make sure you are not getting any warnings coz that can ruin your program.

to call a routine from external asm file.. you need to declare that segment as public. i will give you an example soon..

Nisar Ahmed

Wed Jul 29 2009, 11:40PM

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There is no any warning.

Ajay Bhargav

Fri Jul 31 2009, 02:54PM

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here is the exact Keil example..

File: ADD.asm

CODE:

;Add routine which will be called from other file

PUBLIC ADDNUM ;declare function as public

ADDNUM_ SEGMENT CODE  ;define code segment for linker

RSEG ADDNUM_ ;select segment ADDNUM

ADDNUM:  ;Our add routine

MOV R2,R1

ADD R2,R0

RET

File: Test.asm

CODE:

EXTRN CODE (ADDNUM) ;define the external symbol

CSEG at 0 ;code starts at 0

MOV R0,#50  ;Some dummy instructions

MOV R1,#51

ACALL ADDNUM ;lets call this routine which is in second file

Link it and check..

[ Edited Fri Jul 31 2009, 02:56PM ]

Tags: keil assembly programming, keil C calling label external file

Nisar Ahmed

Fri Jul 31 2009, 11:30PM

Registered Member #1201

Joined: Sat May 26 2007, 02:27AM
Location (Home Town): Pakistan
Posts: 465

Thanks for help

ajayhhh

Mon Aug 03 2009, 01:10PM

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Joined: Wed Jul 22 2009, 03:27PM
Location (Home Town): Bangalore
Posts: 10

Ok i guess Ajay's example is enough to learn the multi file concept..

I have written a code of about 31KB in a notepad which includes main pgm, LCD initilizations, 3 timer configurations and settings, ADC and its lookup table, Serial intializations and its Tx and Rx, keypad routine and some more things..

Unfortunately i dont know the concept of multi file in asm formats and i have written all these in a single file with countless jumps.... Thank god its working and thanks to JTAG debugger as well...

Now i wana seperate them into individual files and add them into my project...

So i request any 1 to plz share me a project where such concept of multi files is used... so i can get a clear idea of it...

And i dont understand why multi file is required when the solo single file is working fine....

Anyways both formats jumps to specified sequence right ? Can any 1 plz explain why they insist on multifile ?

[ Edited Mon Aug 03 2009, 01:13PM ]

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