Another linking error :(

error message

.\Flash\Blinky.axf: Error: L6218E: Undefined symbol EplDlluCalSetAsndServiceIdFilter (referred from epldllu.o).

error where function is called, in epldllu.c:

Ret = EplDlluCalSetAsndServiceIdFilter(ServiceId_p, Filter_p);

epldllu.c #include files

#include "EplDllu.h"
#include "EplDlluCal.h"

function definition in epldllucal.c

static tEplKernel EplDlluCalSetAsndServiceIdFilter(tEplDllAsndServiceId ServiceId_p, tEplDllAsndFilter Filter_p)
{
tEplKernel  Ret = kEplSuccessful;
tEplEvent   Event;
tEplDllCalAsndServiceIdFilter   ServFilter;

    Event.m_EventSink = kEplEventSinkDllkCal;
    Event.m_EventType = kEplEventTypeDllkServFilter;
    ServFilter.m_ServiceId = ServiceId_p;
    ServFilter.m_Filter = Filter_p;
    Event.m_pArg = &ServFilter;
    Event.m_uiSize = sizeof (ServFilter);

    Ret = EplEventuPost(&Event);

    return Ret;
}

function reference in epldllcal.h

#ifndef _EPL_DLLUCAL_H_
#define _EPL_DLLUCAL_H_

#include "EplDll.h"
#include "EplEvent.h"

//---------------------------------------------------------------------------
// const defines
//---------------------------------------------------------------------------

//---------------------------------------------------------------------------
// typedef
//---------------------------------------------------------------------------

typedef tEplKernel (PUBLIC * tEplDlluCbAsnd) (tEplFrameInfo * pFrameInfo_p);

//---------------------------------------------------------------------------
// function prototypes
//---------------------------------------------------------------------------

tEplKernel EplDlluCalAddInstance(void);

tEplKernel EplDlluCalDelInstance(void);

tEplKernel EplDlluCalRegAsndService(tEplDllAsndServiceId ServiceId_p,
                                    tEplDlluCbAsnd pfnDlluCbAsnd_p,
                                    tEplDllAsndFilter Filter_p);

tEplKernel EplDlluCalAsyncSend(tEplFrameInfo * pFrameInfo, tEplDllAsyncReqPriority Priority_p);

tEplKernel EplDlluCalProcess(tEplEvent * pEvent_p);

tEplKernel EplDlluCalSetAsndServiceIdFilter(tEplDllAsndServiceId ServiceId_p, tEplDllAsndFilter Filter_p);

#if((EPL_MODULE_INTEGRATION & EPL_MODULE_NMT_MN) != 0)

tEplKernel EplDlluCalAddNode(tEplDllNodeInfo * pNodeInfo_p);

tEplKernel EplDlluCalDeleteNode(unsigned int uiNodeId_p);

tEplKernel EplDlluCalSoftDeleteNode(unsigned int uiNodeId_p);

tEplKernel EplDlluCalIssueRequest(tEplDllReqServiceId Service_p, unsigned int uiNodeId_p, BYTE bSoaFlag1_p);

#endif


#endif  // #ifndef _EPL_DLLUCAL_H_