/**
 * @file	
 * @author	chipsea
 * @brief	
 * @version	0.1
 * @date	2020-11-30
 * @copyright Copyright (c) 2020, CHIPSEA Co., Ltd.
 * @note
 */
#ifndef OBSERVER_H
#define OBSERVER_H

#ifdef __cplusplus
extern "C"
{
#endif

/*********************************************************************
 * INCLUDES
 */
#include "bcomdef.h"
#include "OSAL.h"
#include "gap.h"

/*********************************************************************
 * CONSTANTS
 */

/** @defgroup GAPOBSERVERROLE_PROFILE_PARAMETERS GAP Observer Role Parameters
 * @{
 */
#define GAPOBSERVERROLE_BD_ADDR        0x400  //!< Device's Address. Read Only. Size is uint8[B_ADDR_LEN]. This item is read from the controller.
#define GAPOBSERVERROLE_MAX_SCAN_RES   0x401  //!< Maximum number of discover scan results to receive. Default is 0 = unlimited.
/** @} End GAPOBSERVERROLE_PROFILE_PARAMETERS */

/*********************************************************************
 * VARIABLES
 */

/*********************************************************************
 * MACROS
 */

/*********************************************************************
 * TYPEDEFS
 */

/**
 * Observer Event Structure
 */
typedef union
{
  gapEventHdr_t             gap;                //!< GAP_MSG_EVENT and status.
  gapDeviceInitDoneEvent_t  initDone;           //!< GAP initialization done.
  gapDeviceInfoEvent_t      deviceInfo;         //!< Discovery device information event structure.
  gapDevDiscEvent_t         discCmpl;           //!< Discovery complete event structure.
} gapObserverRoleEvent_t;

/**
 * RSSI Read Callback Function
 */
typedef void (*pfnGapObserverRoleRssiCB_t)
(
  uint16 connHandle,                    //!< Connection handle.
  int8  rssi                            //!< New RSSI value.
);

/**
 * Observer Event Callback Function
 */
typedef void (*pfnGapObserverRoleEventCB_t)
(
  gapObserverRoleEvent_t *pEvent         //!< Pointer to event structure.
);

/**
 * Observer Callback Structure
 */
typedef struct
{
  pfnGapObserverRoleRssiCB_t   rssiCB;   //!< RSSI callback.
  pfnGapObserverRoleEventCB_t  eventCB;  //!< Event callback.
} gapObserverRoleCB_t;

/*********************************************************************
 * VARIABLES
 */

/*********************************************************************
 * API FUNCTIONS
 */

/*-------------------------------------------------------------------
 * Observer Profile Public APIs
 */

/**
 * @defgroup OBSERVER_PROFILE_API Observer Profile API Functions
 *
 * @{
 */

/**
 * @brief   Start the device in Observer role.  This function is typically
 *          called once during system startup.
 *
 * @param   pAppCallbacks - pointer to application callbacks
 *
 * @return  SUCCESS: Operation successful.<BR>
 *          bleAlreadyInRequestedMode: Device already started.<BR>
 */
extern bStatus_t GAPObserverRole_StartDevice( gapObserverRoleCB_t *pAppCallbacks );

/**
 * @brief   Set a parameter in the Observer Profile.
 *
 * @param   param - profile parameter ID: @ref GAPOBSERVERROLE_PROFILE_PARAMETERS
 * @param   len - length of data to write
 * @param   pValue - pointer to data to write.  This is dependent on
 *          the parameter ID and WILL be cast to the appropriate
 *          data type.
 *
 * @return  SUCCESS: Operation successful.<BR>
 *          INVALIDPARAMETER: Invalid parameter ID.<BR>
 */
extern bStatus_t GAPObserverRole_SetParameter( uint16 param, uint8 len, void *pValue );

/**
 * @brief   Get a parameter in the Observer Profile.
 *
 * @param   param - profile parameter ID: @ref GAPOBSERVERROLE_PROFILE_PARAMETERS
 * @param   pValue - pointer to buffer to contain the read data
 *
 * @return  SUCCESS: Operation successful.<BR>
 *          INVALIDPARAMETER: Invalid parameter ID.<BR>
 */
extern bStatus_t GAPObserverRole_GetParameter( uint16 param, void *pValue );

/**
 * @brief   Start a device discovery scan.
 *
 * @param   mode - discovery mode: @ref GAP_DEVDISC_MODE_DEFINES
 * @param   activeScan - TRUE to perform active scan
 * @param   whiteList - TRUE to only scan for devices in the white list
 *
 * @return  SUCCESS: Discovery scan started.<BR>
 *          bleIncorrectMode: Invalid profile role.<BR>
 *          bleAlreadyInRequestedMode: Not available.<BR>
 */
extern bStatus_t GAPObserverRole_StartDiscovery( uint8 mode, uint8 activeScan, uint8 whiteList );

/**
 * @brief   Cancel a device discovery scan.
 *
 * @return  SUCCESS: Cancel started.<BR>
 *          bleInvalidTaskID: Not the task that started discovery.<BR>
 *          bleIncorrectMode: Not in discovery mode.<BR>
 */
extern bStatus_t GAPObserverRole_CancelDiscovery( void );

/**
 * @}
 */

/*-------------------------------------------------------------------
 * TASK API - These functions must only be called by OSAL.
 */

/**
 * @internal
 *
 * @brief   Observer Profile Task initialization function.
 *
 * @param   taskId - Task ID.
 *
 * @return  void
 */
extern void GAPObserverRole_Init( uint8 taskId );

/**
 * @internal
 *
 * @brief   Observer Profile Task event processing function.
 *
 * @param   taskId - Task ID
 * @param   events - Events.
 *
 * @return  events not processed
 */
extern uint16 GAPObserverRole_ProcessEvent( uint8 taskId, uint16 events );

/*********************************************************************
*********************************************************************/

#ifdef __cplusplus
}
#endif

#endif /* OBSERVER_H */