低功耗蓝牙cc2541学习笔记之无线通信- 分析SimpleBLEPeripheral_Init（）函数

妖狐艹你老母 2022-06-12 14:51 464阅读 0赞

/*
    SimpleBLEPeripheral初始化的工作：
    1.广播数据设置
    2.配对数据设置
    3.Initialize GATT attributes (加服务)
    4.Setup the SimpleProfile Characteristic Values（设置特征值）
    5.注册回调函数
    6.设置事件
    */
    SimpleBLEPeripheral_Init()
    {
      //Minimum time upon connection establishment before the peripheral starts a connection update procedure. In seconds (default 5 seconds)
      //在外设开始连接更新过程之前最小的连接，默认为5s。单位是秒
      GAP_SetParamValue( TGAP_CONN_PAUSE_PERIPHERAL, DEFAULT_CONN_PAUSE_PERIPHERAL );
    
    
      //if TRUE, device starts advertising upon initialization
      initial_advertising_enable = TRUE；/ initial_advertising_enable = FALSE;
      
        uint8  enable_update_request = DEFAULT_ENABLE_UPDATE_REQUEST;       //使能更新请求
        uint16 desired_min_interval = DEFAULT_DESIRED_MIN_CONN_INTERVAL;    //最小连接间隔 100ms  单位为1.25ms
        uint16 desired_max_interval = DEFAULT_DESIRED_MAX_CONN_INTERVAL;//最大的连接间隔 1000ms 单位为1.25ms
        uint16 desired_slave_latency = DEFAULT_DESIRED_SLAVE_LATENCY;       // Slave latency to use if automatic parameter update request is enabled
        uint16 desired_conn_timeout = DEFAULT_DESIRED_CONN_TIMEOUT;         //Supervision timeout value (units of 10ms, 1000=10s) if automatic parameter update request is enabled，
                                                                            //监视超时值 10ms的单位，1000 = 10s
        
        
        // Set the GAP Role Parameters 设置GAP角色参数
        GAPRole_SetParameter( GAPROLE_ADVERT_ENABLED, sizeof( uint8 ), &initial_advertising_enable ); //使能广播位
        GAPRole_SetParameter( GAPROLE_ADVERT_OFF_TIME, sizeof( uint16 ), &gapRole_AdvertOffTime );    //广播关闭的时间
    
    
        GAPRole_SetParameter( GAPROLE_SCAN_RSP_DATA, sizeof ( scanRspData ), scanRspData );    //扫描响应数据 max size = 31 bytes
        GAPRole_SetParameter( GAPROLE_ADVERT_DATA, sizeof( advertData ), advertData );         //广播数据   
    
    
        GAPRole_SetParameter( GAPROLE_PARAM_UPDATE_ENABLE, sizeof( uint8 ), &enable_update_request ); //使能更新请求
        GAPRole_SetParameter( GAPROLE_MIN_CONN_INTERVAL, sizeof( uint16 ), &desired_min_interval ); //最小连接间隔 100ms  单位为1.25ms
        GAPRole_SetParameter( GAPROLE_MAX_CONN_INTERVAL, sizeof( uint16 ), &desired_max_interval );
        GAPRole_SetParameter( GAPROLE_SLAVE_LATENCY, sizeof( uint16 ), &desired_slave_latency );
        GAPRole_SetParameter( GAPROLE_TIMEOUT_MULTIPLIER, sizeof( uint16 ), &desired_conn_timeout );
    
    
      // Set the GAP Characteristics
      GGS_SetParameter( GGS_DEVICE_NAME_ATT, GAP_DEVICE_NAME_LEN, attDeviceName ); //设备名
    
    
    // Set advertising interval 设置广播间隔
      {
        uint16 advInt = DEFAULT_ADVERTISING_INTERVAL; //100ms
    
    
        GAP_SetParamValue( TGAP_LIM_DISC_ADV_INT_MIN, advInt ); //limited discoverable mode,最小间隔
        GAP_SetParamValue( TGAP_LIM_DISC_ADV_INT_MAX, advInt ); //limited discoverable mode,最大间隔
        GAP_SetParamValue( TGAP_GEN_DISC_ADV_INT_MIN, advInt ); //General discoverable mode,最小间隔
        GAP_SetParamValue( TGAP_GEN_DISC_ADV_INT_MAX, advInt ); //General discoverable mode,最小间隔
      }
    
    
    // Setup the GAP Bond Manager 绑定管理器设置
      {
        uint32 passkey = 0; // passkey "000000"
        uint8 pairMode = GAPBOND_PAIRING_MODE_WAIT_FOR_REQ; ; //配对模式，配置成等待主机的配对请求
        uint8 mitm = TRUE;
        uint8 ioCap = GAPBOND_IO_CAP_DISPLAY_ONLY;  //Display Only Device 只显示设备
        uint8 bonding = TRUE;
        GAPBondMgr_SetParameter( GAPBOND_DEFAULT_PASSCODE, sizeof ( uint32 ), &passkey );
        GAPBondMgr_SetParameter( GAPBOND_PAIRING_MODE, sizeof ( uint8 ), &pairMode );
        GAPBondMgr_SetParameter( GAPBOND_MITM_PROTECTION, sizeof ( uint8 ), &mitm );
        GAPBondMgr_SetParameter( GAPBOND_IO_CAPABILITIES, sizeof ( uint8 ), &ioCap );
        GAPBondMgr_SetParameter( GAPBOND_BONDING_ENABLED, sizeof ( uint8 ), &bonding );
      }
    
    
      // Initialize GATT attributes  初始化GATT属性
      GGS_AddService( GATT_ALL_SERVICES );            // GAP                          //加服务 参数是服务
      GATTServApp_AddService( GATT_ALL_SERVICES );    // GATT attributes              //Add function for the GATT Service.
      DevInfo_AddService();                           // Device Information Service 
      SimpleProfile_AddService( GATT_ALL_SERVICES );  // Simple GATT Profile
    #if defined FEATURE_OAD
      VOID OADTarget_AddService();                    // OAD Profile
    #endif
    
    
    
    
    // Setup the SimpleProfile Characteristic Values 设置SimpleProfile特性值
      {
        uint8 charValue1 = 1;
        uint8 charValue2 = 2;
        uint8 charValue3 = 3;
        uint8 charValue4 = 4;
        uint8 charValue5[SIMPLEPROFILE_CHAR5_LEN] = { 1, 2, 3, 4, 5 };
        SimpleProfile_SetParameter( SIMPLEPROFILE_CHAR1, sizeof ( uint8 ), &charValue1 );
        SimpleProfile_SetParameter( SIMPLEPROFILE_CHAR2, sizeof ( uint8 ), &charValue2 );
        SimpleProfile_SetParameter( SIMPLEPROFILE_CHAR3, sizeof ( uint8 ), &charValue3 );
        SimpleProfile_SetParameter( SIMPLEPROFILE_CHAR4, sizeof ( uint8 ), &charValue4 );
        SimpleProfile_SetParameter( SIMPLEPROFILE_CHAR5, SIMPLEPROFILE_CHAR5_LEN, charValue5 );
      }
    
    
      // Register callback with SimpleGATTprofile   使用SimpleGATTprofile注册回调
      VOID SimpleProfile_RegisterAppCBs( &simpleBLEPeripheral_SimpleProfileCBs );
    
    
      // Enable clock divide on halt
      // This reduces active current while radio is active and CC254x MCU
      // is halted  用于设置MCU停止时系统时钟是否分频。
      HCI_EXT_ClkDivOnHaltCmd( HCI_EXT_ENABLE_CLK_DIVIDE_ON_HALT );
    
    
     // Setup a delayed profile startup 设置事件
      osal_set_event( simpleBLEPeripheral_TaskID, SBP_START_DEVICE_EVT );