Error during linking

Hi,

You need to add the file drivers/buttons.c to your project and compile it then the linker will find out the missing function.

Petrei 

Hi,

I added the file "drivers/buttons.c" and don't present  a question mark left in the line '#include "drivers/buttons.c"', but when I compile show the same error (error during linking).  any other ideas?

Hi,

Oh, no like that - never #include .c file(s) - this should be done by importing the file to the src folder or your project folder, depends how it is organized - and then after you select the file, a button "Advanced" in the lower right part of importing window must be clicked and then select to add it as symbolic link - the file will not be moved from the original place, instead the link will call it and compile it. There should be some examples in launchpad tutorial(s) - sure you have done it at least once...

Petrei 

hi,

Sorry for my bad understanding. My include statement was "#include drivers/buttons.h" sorry, was a typo mistake. I'm newer in CCS, my version is 5.2, could you give me some more steps how to  import it ? I cannot find a button "Advanced" when a click the file in my project explorer :(  I really appreciate ... again sorry for my bad understanding.

Hi,

You must go to the project explorer, click/select project name or source folder and then in main menu click File | Import and from the opening window select General | File System, which will open a window like in the attached picture.

This picture shows the Advanced button already selected - make it like in this picture and click Finish - and that's it. Note: go to the project Explorer and see the small icon at the left of the name of this file. A small arrow shows/tells you this is a symbolic link.

Petrei

Hi petrei,

ten thousands thanks for you help :) , it works like a charm, but now is showing this error: "unresolved symbol ROM_GPIODirModeSet, first referenced in ./buttons.obj  " and all the other ROM_xxx in the buttons.c file, it have a small yellow triangle with a excalmation sign in left part of the file. I added "#include rom.h" but still the same. What can I do ?

Make sure you have TARGET_IS_BLIZZARD_RB1  defined as a pre-defined symbol in your project settings.  In compiler or linker advanced settings.

This is the define that tells rom.h which ROM functions exist on a particular device.

use TARGET_IS_BLIZZARD_RB1 if you have a TM4C  or XM4C labeled part.

Use TARGET_IS_BLIZZARD_RA3 for LM4F labeled parts.

Dexter

hi,

where do I find "pre-defined symbol" in my project settings ? I'm new in CCS.

thanks

right click on the project.

select options

in the tree on the left under "build" then "ARM Compiler" then "Advanced Options" finally "Predefined Symbols"

Hi,

I did it , and still giving me the same error.

What have you got listed in the project settings for directories to search?

right click on the project -> select properties -> under build -> ARM Compiler -> find Include Options

In the bottom section of the include options dialog you should have several directories listed.  One of them should point to the boards/ek-lm4f232 directory.

Also http://www.ti.com/stellarislaunchpadworkshop  has some good tutorials on all the CCS project settings. 

Hi,

I included this directories:

/../StellarisWare

/../../boards/ek-lm4f120xl

../include

I'm following the LaunchPad workshop, but when I tried to use "ButtonPoll()" to turn one LED on with left button and other LED to right button, it gave me a error shown before, I linked a "button.c" file to my project (keeping in the instrucction given by other user of the community) after that it shown a different error :

"unresolved symbol ROM_GPIODirModeSet, first referenced in ./buttons.obj    ButtonPoll             C/C++ Problem"

It's my first time with this mcu and CCS. I'm using Stalleris LaunchPad.

hi,

Now its working !! you're a genuis man. thanks a lot to everyone who help me. This forum is quite fast , I'm astonished. Thanks again. +1 for all.