text: //*****************************************************************************
  //
  //  custss_api.h
  //! @file
  //!
  //! @brief Customized Serice Server API header file
  //
  //*****************************************************************************
  
  //*****************************************************************************
  //
  // Copyright (c) 2020, 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 SBL-AP4A-v1-RC-25-g74e0ec548 of the AmbiqSuite Development Package.
  //
  //*****************************************************************************
  #ifndef CUSTSS_API_H
  #define CUSTSS_API_H
  
  #include "wsf_timer.h"
  #include "att_api.h"
  
  #ifdef __cplusplus
  extern "C"
  {
  #endif
  
  //*****************************************************************************
  //
  // Macro definitions
  //
  //*****************************************************************************
  
  //*****************************************************************************
  //
  // function definitions
  //
  //*****************************************************************************
  
  
  //*****************************************************************************
  //
  //! @fn     CustssReadCback
  //!
  //! @brief  Attribute read callback function.
  //!
  //! @param  connId       DM connection ID.
  //! @param  handler      Attribute handle.
  //! @param  operation    Attribute operation.
  //! @param  offset       Attribute offset.
  //! @param  pAttr        Pointer to attribute
  //!
  //! @return none
  //
  //*****************************************************************************
  static uint8_t CustssReadCback(dmConnId_t connId, uint16_t handle, \
                                      uint8_t operation, uint16_t offset, attsAttr_t *pAttr);
  
  //*****************************************************************************
  //
  //! @fn     CustssWriteCback
  //!
  //! @brief  Attribute write callback function.
  //!
  //! @param  connId       DM connection ID.
  //! @param  handler      Attribute handle.
  //! @param  operation    Attribute operation.
  //! @param  offset       Attribute offset.
  //! @param  len          Datalen written to attribute.
  //! @param  pValue       Pointer to data
  //! @param  pAttr        Pointer to attribute
  //!
  //! @return none
  //
  //*****************************************************************************
  static uint8_t CustssWriteCback(dmConnId_t connId, uint16_t handle, \
                                      uint8_t operation, uint16_t offset, uint16_t len, uint8_t *pValue, attsAttr_t *pAttr);
  
  //*****************************************************************************
  //
  //! @fn     CustssScheduledActionOnTimesUp
  //!
  //! @brief  Start the scheduled action.
  //!
  //! @param  pMsg       Pointer to wsf message.
  //!
  //! @return none
  //
  //*****************************************************************************
  static void CustssScheduledActionOnTimesUp(wsfMsgHdr_t *pMsg);
  
  //*****************************************************************************
  //
  //! @fn     CustssScheduledActionStop
  //!
  //! @brief  Stop the scheduled action.
  //!
  //! @param  connId      DM connection ID.
  //! @param  timerEvt    Event to be sent when the timer expires.
  //! @param  msec        Time delay in milliseconds.
  //!
  //! @return none
  //
  //*****************************************************************************
  void CustssScheduledActionStart(dmConnId_t connId, uint8_t timerEvt, wsfTimerTicks_t msec);
  
  //*****************************************************************************
  //
  //! @fn     CustssScheduledActionStop
  //!
  //! @brief  Stop the scheduled action.
  //!
  //! @param  connId          DM connection ID.
  //!
  //! @return none
  //
  //*****************************************************************************
  void CustssScheduledActionStop(dmConnId_t connId);
  
  //*****************************************************************************
  //
  //! @fn     CustssInit
  //!
  //! @brief  Initialize the customized service server.
  //!
  //! @param  handlerId       Handler of application
  //!
  //! @return none
  //
  //*****************************************************************************
  void CustssInit(wsfHandlerId_t handlerId);
  
  //*****************************************************************************
  //
  //! @fn     CustssDeinit
  //!
  //! @brief  De-initialize the customized service server.
  //!
  //! @param  none
  //!
  //! @return none
  //
  //*****************************************************************************
  void CustssDeinit(void);
  
  //*****************************************************************************
  //
  //! @fn     CustssStart
  //!
  //! @brief  Start the customized service server.
  //!
  //! @param  none
  //!
  //! @return none
  //
  //*****************************************************************************
  void CustssStart(void);
  
  //*****************************************************************************
  //
  //! @fn     CustssStop
  //!
  //! @brief  Stop the customized service server.
  //!
  //! @param  none
  //!
  //! @return none
  //
  //*****************************************************************************
  void CustssStop(void);
  
  //*****************************************************************************
  //
  //! @fn     CustssSendNtf
  //!
  //! @brief  Send an attribute protocol Handle Value Notification.
  //!
  //! @param  connId       DM connection ID.
  //! @param  idx          Index of attrribute.
  //! @param  handle       Attribute handle.
  //! @param  len          Length of data.
  //! @param  pVal        Pointer to data.
  //!
  //! @return none
  //
  //*****************************************************************************
  void CustssSendNtf(dmConnId_t connId, uint8_t idx, uint16_t handle, uint16_t len, uint8_t *pVal);
  
  //*****************************************************************************
  //
  //! @fn     CustssSendInd
  //!
  //! @brief  Send an attribute protocol handle value indication.
  //!
  //! @param  connId       DM connection ID.
  //! @param  idx          Index of attrribute.
  //! @param  handle       Attribute handle.
  //! @param  len          Length of data.
  //! @param  pVal         Pointer to data.
  //!
  //! @return none
  //
  //*****************************************************************************
  void CustssSendInd(dmConnId_t connId, uint8_t idx, uint16_t handle, uint16_t len, uint8_t *pVal);
  
  //*****************************************************************************
  //
  //! @fn     CustssProcMsg
  //!
  //! @brief  Process wsf messages.
  //!
  //! @param  pMsg        Pointer to wsf message.
  //!
  //! @return none
  //
  //*****************************************************************************
  void CustssProcMsg(wsfMsgHdr_t *pMsg);
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif // CUSTSS_API_H
  