Unresolved symbols for Event related functions

Danish Joseph

Other Parts Discussed in Thread: SYSBIOS

Hi,

I am getting unresolved symbols error from the CCS for Event related functions as given below,

undefined first referenced
symbol in file
--------- ----------------
ti_sysbios_knl_Event_create <whole-program>
ti_sysbios_knl_Event_post__E <whole-program>

error #10234-D: unresolved symbols remain
error #10010: errors encountered during linking; "simple_peripheral_cc2650lp_app.out" not built
gmake: *** [simple_peripheral_cc2650lp_app.out] Error 1

How can I avoid such an error?

But one interesting thing is that I have a different workspace where I am using Events to communicate between the Tasks. I my second workspace the build was successful.

Regards,

Danish

over 8 years ago

0 Michel Solecki over 8 years ago

Mastermind 8415 points

Hi Danish,

Have you compared the .cfg files? Most likely, you are missing the Event module in your configuration.

If you are using CCS, it will be under TI-RTOS->Products->SYSBIOS->Synchronization->Events

If you use IAR or open the text version of the file, make sure that this line is included in your .cfg file.

var Event = xdc.useModule('ti.sysbios.knl.Event');

Regards,

Michel

0 Danish Joseph over 8 years ago in reply to Michel Solecki

Intellectual 830 points

Hi Michel,

Thanks for the reply.

Unfortunately this line is also there in the .cfg file.

I am using BLE stack version 2.2 and its .cfg file contains Event part is like this

/*
 * Allows for the implicit posting of events through the semaphore,
 * disable for additional code saving.
 *
 * Pick one:
 *  - true
 *      This allows the Semaphore module to post semaphores and events
 *      simultaneously.
 *  - false (default)
 *      Events must be explicitly posted to unblock tasks.
 *
 *  When using BIOS in ROM:
 *      This option must be set to false.
 */
//Semaphore.supportsEvents = true;
Semaphore.supportsEvents = false;




/* ================ Events configuration ================ */
if (typeof USE_EVENTS != 'undefined' && USE_EVENTS != 0)
{
  var Events = xdc.useModule('ti.sysbios.knl.Event');
}

According to this file, what can I do to include Events to my project.

Where should I include the Macro USE_EVENTS ?

Regards,

Danish

0 Michel Solecki over 8 years ago in reply to Danish Joseph

Mastermind 8415 points

Hi Danish,

Have you tried simply moving the Events statement outside of the if block?

I'm not quite sure whether USE_EVENTS is a macto or something else (because of the typeof statement). Nevertheless, if it is a macro, then it should be in the pre-compiler options.

In CCS, it would in the project options under Predefined symbols.

In IAR, in project options, in the C/C++ compiler options under the pre-processor tab.

Regards,

Michel

0 Danish Joseph over 8 years ago in reply to Danish Joseph

Intellectual 830 points

Hi Michel,

I solved the problem by adding USE_EVENTS=1 to "Project→Properties→Build→XDCtools→Advanced" as in the figure below

Thanks for the suggestion

Regards,

Danish

0 Michel Solecki over 8 years ago in reply to Danish Joseph

Mastermind 8415 points

Glad to see that you resolved your issue.
I suggest that you click on "Verify Answer" on your own answer so others can benefit from it.
Michel

0 Pavithra R over 8 years ago in reply to Danish Joseph

Intellectual 445 points

I m getting following unresolved symbol error for following events in ccs

undefined first referenced
symbol in file
--------- ----------------
ti_sysbios_knl_Event_Params__init__S <whole-program>
ti_sysbios_knl_Event_construct <whole-program>
ti_sysbios_knl_Event_pend__E <whole-program>
ti_sysbios_knl_Event_post__E <whole-program>

Also my app_ble.cfg file contains

//Semaphore.supportsEvents = true;
Semaphore.supportsEvents = false;

/* ================ Events configuration ================ */
if (typeof USE_EVENTS != 'undefined' && USE_EVENTS != 0)
{
var Events = xdc.useModule('ti.sysbios.knl.Event');
}

I have also defines USE_EVENTS=1 in XDCtools->advanced options

Still this error persists.

can u suggest a solution?

0 Danish Joseph over 8 years ago in reply to Pavithra R

Intellectual 830 points

Hi Pavithra,

Apology for late reply.

If you are not solved your problem, clean and build again. Cleaning most likely solve the problem. Worked for me.

Reason - Configuration files is already imported and build for you when you click the build button for the first time. To reflect changes applied to the configuration in your project, need to import the file again.

Regards,
Danish

0 Pavithra R over 8 years ago in reply to Danish Joseph

Intellectual 445 points

Hi,

Thanks for reply

I got it resolved by adding following lines in app_ble.cfg

utils.importFile("../../../../../src/common/cc26xx/kernel/cc2640/config/cc2640.cfg");

//Semaphore.supportsEvents = true;

Semaphore.supportsEvents = false;

/* ================ Events configuration ================ */

if (typeof USE_EVENTS != 'undefined' && USE_EVENTS != 0)

{

var Events = xdc.useModule('ti.sysbios.knl.Event');

print("Howdy!!!!!!"); // shows up in the build log...used to verify that it was included:)

}

Also add USE_EVENTS=1 in the XDCtools->Advanced->Config Script args

Then clean and build the project.

0 Danish Joseph over 8 years ago in reply to Pavithra R

Intellectual 830 points

Glad to hear that you solved it.

Regards,
Danish

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Unresolved symbols for Event related functions