text: //*****************************************************************************
  //
  //  ancc_main.c
  //! @file
  //!
  //! @brief  apple notification center service client.
  //
  //*****************************************************************************
  
  //*****************************************************************************
  //
  // Copyright (c) 2021, Ambiq Micro, Inc.
  // All rights reserved.
  //
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions are met:
  //
  // 1. Redistributions of source code must retain the above copyright notice,
  // this list of conditions and the following disclaimer.
  //
  // 2. Redistributions in binary form must reproduce the above copyright
  // notice, this list of conditions and the following disclaimer in the
  // documentation and/or other materials provided with the distribution.
  //
  // 3. Neither the name of the copyright holder nor the names of its
  // contributors may be used to endorse or promote products derived from this
  // software without specific prior written permission.
  //
  // Third party software included in this distribution is subject to the
  // additional license terms as defined in the /docs/licenses directory.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  // POSSIBILITY OF SUCH DAMAGE.
  //
  // This is part of revision b0-release-20210111-375-gc3201eeb4 of the AmbiqSuite Development Package.
  //
  //*****************************************************************************
  
  #include <string.h>
  #include "wsf_types.h"
  #include "wsf_assert.h"
  #include "bstream.h"
  #include "app_api.h"
  #include "ancc_api.h"
  
  #include "am_util.h"
  
  /**************************************************************************************************
    Local Variables
  **************************************************************************************************/
  
  /*!
   *  Apple Notification Center Service Client (ANCC)
   */
  
  /* UUIDs */
  static const uint8_t anccAncsSvcUuid[] = {ATT_UUID_ANCS_SERVICE};       /*! ANCS Service UUID */
  static const uint8_t anccNSChUuid[] = {ATT_UUID_NOTIFICATION_SOURCE};    /*! Notification Source UUID */
  static const uint8_t anccCPChUuid[] = {ATT_UUID_CTRL_POINT};             /*! control point UUID*/
  static const uint8_t anccDSChUuid[] = {ATT_UUID_DATA_SOURCE};            /*! data source UUID*/
  /* Characteristics for discovery */
  
  #define DISCOVER_TIMER_DELAY      (3000)  // ms
  
  /*! Proprietary data */
  static const attcDiscChar_t anccNSDat =
  {
      anccNSChUuid,
      ATTC_SET_REQUIRED | ATTC_SET_UUID_128
  };
  
  /*! Proprietary data descriptor */  //notification source
  static const attcDiscChar_t anccNSdatCcc =
  {
      attCliChCfgUuid,
      ATTC_SET_REQUIRED | ATTC_SET_DESCRIPTOR
  };
  // control point
  static const attcDiscChar_t anccCtrlPoint =
  {
      anccCPChUuid,
      ATTC_SET_REQUIRED | ATTC_SET_UUID_128
  };
  
  // data source
  static const attcDiscChar_t anccDataSrc =
  {
      anccDSChUuid,
      ATTC_SET_REQUIRED | ATTC_SET_UUID_128
  };
  /*! Proprietary data descriptor */  //data source
  static const attcDiscChar_t anccDataSrcCcc =
  {
      attCliChCfgUuid,
      ATTC_SET_REQUIRED | ATTC_SET_DESCRIPTOR
  };
  
  /*! List of characteristics to be discovered; order matches handle index enumeration  */
  static const attcDiscChar_t *anccSvcDiscCharList[] =
  {
      &anccNSDat,                    /*! Proprietary data */
      &anccNSdatCcc,                 /*! Proprietary data descriptor */
      &anccCtrlPoint,                /*! Control point */
      &anccDataSrc,                  /*! data source */
      &anccDataSrcCcc                /*! data source descriptor */
  };
  
  /* sanity check:  make sure handle list length matches characteristic list length */
  WSF_CT_ASSERT(ANCC_HDL_LIST_LEN == ((sizeof(anccSvcDiscCharList) / sizeof(attcDiscChar_t *))));
  
  /* Global variable */
  anccCb_t    anccCb;
  
  /*************************************************************************************************/
  /*!
   *  \fn     AnccSvcDiscover
   *
   *  \brief  Perform service and characteristic discovery for ancs service.
   *          Parameter pHdlList must point to an array of length ANCC_HDL_LIST_LEN.
   *          If discovery is successful the handles of discovered characteristics and
   *          descriptors will be set in pHdlList.
   *
   *  \param  connId    Connection identifier.
   *  \param  pHdlList  Characteristic handle list.
   *
   *  \return None.
   */
  /*************************************************************************************************/
  void AnccSvcDiscover(dmConnId_t connId, uint16_t *pHdlList)
  {
      AppDiscFindService(connId, ATT_128_UUID_LEN, (uint8_t *) anccAncsSvcUuid,
                       ANCC_HDL_LIST_LEN, (attcDiscChar_t **) anccSvcDiscCharList, pHdlList);
  }
  
  /*************************************************************************************************/
  /*!
   *  \fn     AnccInit
   *
   *  \brief  Initialize the control variables of ancs client
   *
   *  \param  handlerId   App handler id for timer operation.
   *  \param  cfg         config variable.
   *
   *  \return None.
   */
  /*************************************************************************************************/
  void AnccInit(wsfHandlerId_t handlerId, anccCfg_t* cfg, uint8_t disctimer_event)
  {
      memset(anccCb.anccList, 0, ANCC_LIST_ELEMENTS * sizeof(ancc_notif_t));
      anccCb.cfg.period = cfg->period;
      anccCb.actionTimer.handlerId = handlerId;
      anccCb.discoverTimer.handlerId = handlerId;
      anccCb.discoverTimer.msg.event = disctimer_event;
  }
  
  /*************************************************************************************************/
  /*!
   *  \fn     AnccConnOpen
   *
   *  \brief  Update the key parameters for control variables when connection open.
   *
   *  \param  connId      Connection identifier.
   *  \param  hdlList     Characteristic handle list.
   *
   *  \return None.
   */
  /*************************************************************************************************/
  void AnccConnOpen(dmConnId_t connId, uint16_t* hdlList)
  {
      anccCb.connId = connId;
      anccCb.hdlList = hdlList;
  
      WsfTimerStop(&anccCb.discoverTimer);
      WsfTimerStartMs(&anccCb.discoverTimer, DISCOVER_TIMER_DELAY);
  }
  
  /*************************************************************************************************/
  /*!
   *  \fn     AnccConnClose
   *
   *  \brief  Clear the key parameters for control variables when connection close.
   *
   *  \param  None.
   *
   *  \return None.
   */
  /*************************************************************************************************/
  void AnccConnClose(void)
  {
      WsfTimerStop(&anccCb.discoverTimer);
      anccCb.connId = DM_CONN_ID_NONE;
  }
  
  /*************************************************************************************************/
  /*!
   *  \fn     anccNoConnActive
   *
   *  \brief  Return TRUE if no connections with active measurements.
   *
   *  \return TRUE if no connections active.
   */
  /*************************************************************************************************/
  static bool_t anccNoConnActive(void)
  {
      if (anccCb.connId != DM_CONN_ID_NONE)
      {
          return FALSE;
      }
      return TRUE;
  }
  
  /*************************************************************************************************/
  /*!
   *  \fn     anccActionListPush
   *
   *  \brief  Return TRUE if element is added/updated to the list.
   *
   *  \return TRUE if element is added/updated to the list.
   *          FALSE if list is full.
   */
  /*************************************************************************************************/
  static bool_t anccActionListPush(ancc_notif_t* pElement)
  {
      uint16_t i;
      for ( i = 0; i < ANCC_LIST_ELEMENTS; i++ )
      {
          if ( (anccCb.anccList[i].notification_uid == pElement->notification_uid ) && (anccCb.anccList[i].noti_valid == true) )
          {
              // same notification uid received, update the element
              anccCb.anccList[i].notification_uid = pElement->notification_uid;
              anccCb.anccList[i].event_id = pElement->event_id;
              anccCb.anccList[i].event_flags = pElement->event_flags;
              anccCb.anccList[i].category_id = pElement->category_id;
              anccCb.anccList[i].category_count = pElement->category_count;
              return true;
          }
      }
  
      for ( i = 0; i < ANCC_LIST_ELEMENTS; i++ )
      {
          if ( anccCb.anccList[i].noti_valid == false )
          {
              // found an empty slot
              anccCb.anccList[i].notification_uid = pElement->notification_uid;
              anccCb.anccList[i].event_id = pElement->event_id;
              anccCb.anccList[i].event_flags = pElement->event_flags;
              anccCb.anccList[i].category_id = pElement->category_id;
              anccCb.anccList[i].category_count = pElement->category_count;
              anccCb.anccList[i].noti_valid = true;
              return true;
          }
      }
      return false;   //no empty slot left
  }
  
  /*************************************************************************************************/
  /*!
   *  \fn     anccActionListPop
   *
   *  \brief  Return TRUE if element is popped out and removed from the list.
   *
   *  \return TRUE if element is popped out and removed from the list.
   *          FALSE if list is already empty.
   */
  /*************************************************************************************************/
  static bool_t anccActionListPop(void)
  {
      uint16_t i;
      for ( i = 0; i < ANCC_LIST_ELEMENTS; i++ )
      {
          if ( anccCb.anccList[ANCC_LIST_ELEMENTS - i - 1].noti_valid == true )
          {
              // found a valid element in the list
              anccCb.anccList[ANCC_LIST_ELEMENTS - i - 1].noti_valid = false;
              anccCb.active.handle = ANCC_LIST_ELEMENTS - i - 1;
              return true;
          }
      }
      return false;   //no element left in the list
  }
  
  /*************************************************************************************************/
  /*!
   *  \fn     AnccActionStart
   *
   *  \brief  Start periodic ancc operation.  This function starts a timer to perform
   *          periodic actions.
   *
   *  \param  timerEvt    WSF event designated by the application for the timer.
   *
   *  \return None.
   */
  /*************************************************************************************************/
  void AnccActionStart(uint8_t timerEvt)
  {
      /* if this is first connection */
      if (anccNoConnActive() == FALSE)
      {
          /* initialize control block */
          anccCb.actionTimer.msg.event = timerEvt;
  
          /* (re-)start timer */
          WsfTimerStop(&anccCb.actionTimer);
          WsfTimerStartMs(&anccCb.actionTimer, anccCb.cfg.period);
      }
  }
  
  /*************************************************************************************************/
  /*!
   *  \fn     AnccActionStop
   *
   *  \brief  Stop periodic ancc action.
   *
   *  \param  connId      DM connection identifier.
   *
   *  \return None.
   */
  /*************************************************************************************************/
  void AnccActionStop(void)
  {
      /* stop timer */
      WsfTimerStop(&anccCb.actionTimer);
  }
  
  /*************************************************************************************************/
  /*!
   *  \fn     AnccGetNotificationAttribute
   *
   *  \brief  Send a command to the apple notification center service control point.
   *
   *  \param  pHdlList  Characteristic handle list.
   *  \param  notiUid   NotificationUid.
   *
   *  \return None.
   */
  /*************************************************************************************************/
  void AnccGetNotificationAttribute(uint16_t *pHdlList, uint32_t notiUid)
  {
      // An example to get notification attributes
      uint16_t max_len = 256;
      uint8_t buf[19];   // retrieve the complete attribute list
      if (pHdlList[ANCC_CONTROL_POINT_HDL_IDX] != ATT_HANDLE_NONE)
      {
          buf[0] = BLE_ANCS_COMMAND_ID_GET_NOTIF_ATTRIBUTES;  // put command
          uint8_t * p = &buf[1];
          UINT32_TO_BSTREAM(p, notiUid);    // encode notification uid
  
          // encode attribute IDs
          buf[5] = BLE_ANCS_NOTIF_ATTR_ID_APP_IDENTIFIER;
          buf[6] = BLE_ANCS_NOTIF_ATTR_ID_TITLE;
          // 2 byte length
          buf[7] = max_len;
          buf[8] = max_len >> 8;
          buf[9] = BLE_ANCS_NOTIF_ATTR_ID_SUBTITLE;
          buf[10] = max_len;
          buf[11] = max_len >> 8;
          buf[12] = BLE_ANCS_NOTIF_ATTR_ID_MESSAGE;
          buf[13] = max_len;
          buf[14] = max_len >> 8;
          buf[15] = BLE_ANCS_NOTIF_ATTR_ID_MESSAGE_SIZE;
          buf[16] = BLE_ANCS_NOTIF_ATTR_ID_DATE;
          buf[17] = BLE_ANCS_NOTIF_ATTR_ID_POSITIVE_ACTION_LABEL;
          buf[18] = BLE_ANCS_NOTIF_ATTR_ID_NEGATIVE_ACTION_LABEL;
          AttcWriteReq(anccCb.connId, pHdlList[ANCC_CONTROL_POINT_HDL_IDX], sizeof(buf), buf);
      }
  }
  
  /*************************************************************************************************/
  /*!
   *  \fn     AncsGetAppAttribute
   *
   *  \brief  Send a command to the apple notification center service control point.
   *
   *  \param  pHdlList  Connection identifier.
   *  \param  pAppId    Attribute handle.
   *
   *  \return None.
   */
  /*************************************************************************************************/
  void AncsGetAppAttribute(uint16_t *pHdlList, uint8_t *pAppId)
  {
      // An example to get app attributes
      uint8_t buf[64];   // to hold the command, size of app identifier is unknown
      uint8_t count = 0;
      if (pHdlList[ANCC_CONTROL_POINT_HDL_IDX] != ATT_HANDLE_NONE)
      {
          buf[0] = BLE_ANCS_COMMAND_ID_GET_APP_ATTRIBUTES;    // put command
  
          while (pAppId[count++] != 0);   // NULL terminated string
          if ( count > (64 - 2) )
          {
              // app identifier is too long
          }
          else
          {
              memcpy(&buf[1], pAppId, count);
          }
  
          buf[count + 1] = 0; // app attribute id
          AttcWriteReq(anccCb.connId, pHdlList[ANCC_CONTROL_POINT_HDL_IDX], (count + 2), buf);
      }
  }
  
  /*************************************************************************************************/
  /*!
   *  \fn     AncsPerformNotiAction
   *
   *  \brief  Send a command to the apple notification center service control point.
   *
   *  \param  pHdlList  Characteristic handle list.
   *  \param  actionId  Notification action identifier.
   *  \param  notiUid   NotificationUid.
   *
   *  \return None.
   */
  /*************************************************************************************************/
  void AncsPerformNotiAction(uint16_t *pHdlList, uint32_t notiUid, ancc_notif_action_id_values_t actionId)
  {
      // An example to performs notification action
      uint8_t buf[6];   //to hold the command, size of app identifier is unknown
      if (pHdlList[ANCC_CONTROL_POINT_HDL_IDX] != ATT_HANDLE_NONE)
      {
          buf[0] = BLE_ANCS_COMMAND_ID_GET_PERFORM_NOTIF_ACTION;    // put command
          uint8_t * p = &buf[1];
          UINT32_TO_BSTREAM(p, notiUid);      // encode notification uid
          buf[5] = actionId;                  //action id
          AttcWriteReq(anccCb.connId, pHdlList[ANCC_CONTROL_POINT_HDL_IDX], sizeof(buf), buf);
      }
  }
  
  /*************************************************************************************************/
  /*!
   *  \fn     AnccActionHandler
   *
   *  \brief  Routine to handle ancc related actions.
   *
   *  \param  actionTimerEvt  WsfTimer event indication.
   *
   *  \return None.
   */
  /*************************************************************************************************/
  void AnccActionHandler(uint8_t actionTimerEvt)
  {
      // perform action
      if ( anccActionListPop() )
      {
          AnccGetNotificationAttribute(anccCb.hdlList, anccCb.anccList[anccCb.active.handle].notification_uid);
          AnccActionStart(actionTimerEvt);
      }
      else
      {
          //list empty
          AnccActionStop();
      }
  }
  
  /*************************************************************************************************/
  /*!
   *  \fn     anccAttrHandler
   *
   *  \brief  Static routine to handle attribute receiving and processing.
   *
   *  \param  pMsg      pointer to ATT message.
   *
   *  \return None.
   */
  /*************************************************************************************************/
  static bool anccAttrHandler(attEvt_t * pMsg)
  {
      uint8_t count = 0;
      uint16_t bytesRemaining = 0;
  
      switch(anccCb.active.attrState)
      {
          case NOTI_ATTR_NEW_NOTIFICATION:
              // new notification
              anccCb.active.commandId = pMsg->pValue[0];
              if ( anccCb.active.commandId == BLE_ANCS_COMMAND_ID_GET_NOTIF_ATTRIBUTES )
              {
                  BYTES_TO_UINT32(anccCb.active.notiUid, &(pMsg->pValue[1]));
                  count = 4;
              }
              else if ( anccCb.active.commandId == BLE_ANCS_COMMAND_ID_GET_APP_ATTRIBUTES )
              {
                  while(pMsg->pValue[count + 1] != 0) // NULL terminated string
                  {
                      anccCb.active.appId[count] = pMsg->pValue[count + 1];
                      count++;
                  }
                  anccCb.active.appId[count + 1] = 0; // NULL terminated string
              }
              else
              {
                  // BLE_ANCS_COMMAND_ID_GET_PERFORM_NOTIF_ACTION
                  return false;
              }
              anccCb.active.parseIndex += count + 1;
              anccCb.active.attrState = NOTI_ATTR_NEW_ATTRIBUTE;
              anccCb.active.attrId = 0;
              anccCb.active.attrCount = 0;
  
              if ( pMsg->valueLen > ANCC_ATTRI_BUFFER_SIZE_BYTES )
              {
                  // notification size overflow
              }
              else
              {
                  bytesRemaining = pMsg->valueLen;
              }
              // copy data
              memset(anccCb.active.attrDataBuf, 0, ANCC_ATTRI_BUFFER_SIZE_BYTES);
              anccCb.active.bufIndex = 0;
              for (uint16_t i = 0; i < bytesRemaining; i++)
              {
                  anccCb.active.attrDataBuf[anccCb.active.bufIndex++] = pMsg->pValue[i];
              }
          // no break here by intention
          case NOTI_ATTR_NEW_ATTRIBUTE:
              // new attribute
              // check consistency of the attribute
              if ( anccCb.active.bufIndex - anccCb.active.parseIndex < 3 ) // 1 byte attribute id + 2 bytes attribute length
              {
                  // attribute header not received completely
                  anccCb.active.attrState = NOTI_ATTR_RECEIVING_ATTRIBUTE;
                  return false;
              }
  
              anccCb.active.attrId = anccCb.active.attrDataBuf[anccCb.active.parseIndex];
              BYTES_TO_UINT16(anccCb.active.attrLength, &(anccCb.active.attrDataBuf[anccCb.active.parseIndex + 1]));
  
              if ( anccCb.active.attrLength > (anccCb.active.bufIndex - anccCb.active.parseIndex - 3) ) // 1 byte attribute id + 2 bytes attribute length
              {
                  // attribute body not received completely
                  anccCb.active.attrState = NOTI_ATTR_RECEIVING_ATTRIBUTE;
                  return false;
              }
  
              // parse attribute
              anccCb.active.attrCount++;
              anccCb.active.parseIndex += 3; // 1 byte attribute id + 2 bytes attribute length
  
              if ( anccCb.active.attrId == BLE_ANCS_NOTIF_ATTR_ID_APP_IDENTIFIER )
              {
                  uint8_t temp = 0;
                  while(anccCb.active.attrDataBuf[anccCb.active.parseIndex + temp] != 0)  // NULL terminated string
                  {
                      anccCb.active.appId[temp] = anccCb.active.attrDataBuf[anccCb.active.parseIndex + temp];
                      temp++;
                  }
                  anccCb.active.appId[temp] = 0;  // NULL terminated string
              }
  
              //
              // attribute received
              // execute callback function
              //
              (*anccCb.attrCback)(&anccCb.active);
  
              anccCb.active.parseIndex += anccCb.active.attrLength;
  
              if ( anccCb.active.attrCount >= 8 ) //custom criteria
              {
                  //notification reception done
                  anccCb.active.attrState = NOTI_ATTR_NEW_NOTIFICATION;
                  anccCb.active.parseIndex = 0;
                  anccCb.active.bufIndex = 0;
  
                  //
                  // notification received
                  // execute callback function
                  //
                  (*anccCb.notiCback)(&anccCb.active, anccCb.active.notiUid);
  
                  return false;
              }
  
              return true; // continue parsing
          // no need to break;
          case NOTI_ATTR_RECEIVING_ATTRIBUTE:
              // notification continuing
              bytesRemaining = 0;
              if ( anccCb.active.bufIndex + pMsg->valueLen > ANCC_ATTRI_BUFFER_SIZE_BYTES )
              {
                  // notification size overflow
                  anccCb.active.attrState = NOTI_ATTR_NEW_NOTIFICATION;
                  anccCb.active.parseIndex = 0;
                  anccCb.active.bufIndex = 0;
                  return false;
              }
              else
              {
                  bytesRemaining = pMsg->valueLen;
              }
              // copy data
              for (uint16_t i = 0; i < bytesRemaining; i++)
              {
                  anccCb.active.attrDataBuf[anccCb.active.bufIndex++] = pMsg->pValue[i];
              }
              anccCb.active.attrState = NOTI_ATTR_NEW_ATTRIBUTE;
              return true;
          // no need to break;
      }
      return false;
  }
  /*************************************************************************************************/
  /*!
   *  \fn     AnccNtfValueUpdate
   *
   *  \brief  Routine to handle any ancc related notify.
   *
   *  \param  pHdlList  Characteristic handle list.
   *  \param  actionTimerEvt  WsfTimer event indication.
   *  \param  pMsg      pointer to ATT message.
   *
   *  \return None.
   */
  /*************************************************************************************************/
  void AnccNtfValueUpdate(uint16_t *pHdlList, attEvt_t * pMsg, uint8_t actionTimerEvt)
  {
      ancc_notif_t ancs_notif;
      uint8_t *p;
  
      //notification received
      if (pMsg->handle == pHdlList[ANCC_NOTIFICATION_SOURCE_HDL_IDX])
      {
          // process notificiation source (brief)
          p = pMsg->pValue;
          ancs_notif.event_id = p[0];
          ancs_notif.event_flags = p[1];
          ancs_notif.category_id = p[2];
          ancs_notif.category_count = p[3];
          BYTES_TO_UINT32(ancs_notif.notification_uid, &p[4]);
  
          if (BLE_ANCS_EVENT_ID_NOTIFICATION_REMOVED == ancs_notif.event_id)
          {
              if (NULL != anccCb.rmvCback)
              {
                  anccCb.rmvCback(&ancs_notif);
              }
          }
          else if ( !anccActionListPush(&ancs_notif) )
          {
              // list full
              // APP_TRACE_INFO0("action list full...");
          }
          else
          {
              //
              // actions to be done with timer delays to avoid generating heavy traffic
              //
              AnccActionStart(actionTimerEvt);
              // APP_TRACE_INFO0("added to action list");
          }
      }
      else if ( pMsg->handle == pHdlList[ANCC_DATA_SOURCE_HDL_IDX] )
      {
          // process notificiation/app attributes
          while(anccAttrHandler(pMsg));
      }
  }
  
  /*************************************************************************************************/
  /*!
   *  \fn     AnccCbackRegister
   *
   *  \brief  Register the attribute received callback and notification completed callback.
   *
   *  \param  attrCback  Pointer to attribute received callback function.
   *  \param  notiCback  Pointer to notification completed callback function.
   *
   *  \return None.
   */
  /*************************************************************************************************/
  void AnccCbackRegister(anccAttrRecvCback_t attrCback, anccNotiCmplCback_t notiCback, anccNotiRemoveCback_t rmvCback)
  {
      anccCb.attrCback = attrCback;
      anccCb.notiCback = notiCback;
      anccCb.rmvCback = rmvCback;
  }
  
  
  /*************************************************************************************************/
  /*!
   *  \fn     AnccStartServiceDiscovery
   *
   *  \brief  Do service discovery on connected connection.
   *
   *  \return Return TRUE if service discovery is initiated successfully.
   *
   */
  /*************************************************************************************************/
   bool_t AnccStartServiceDiscovery(void)
  {
      if (anccCb.connId != DM_CONN_ID_NONE)
      {
          appDiscStart(anccCb.connId);
          return TRUE;
      }
      return FALSE;
  }
  