关于针对性连接

可以把想要连接的设备设置为白名单
#define GAP_FILTER_POLICY_ALL 0x00 //!< Allow Scan Request from Any, Allow Connect Request from Any (default).

#define GAP_FILTER_POLICY_WHITE_SCAN 0x01 //!< Allow Scan Request from White List Only, Allow Connect from Any

#define GAP_FILTER_POLICY_WHITE_CON 0x02 //!< Allow Scan Request from Any, Connect from White List Only

#define GAP_FILTER_POLICY_WHITE 0x03 //!< Allow Scan Request and Connect from White List Only

LL_AddWhiteListDevice(address, LL_DEV_ADDR_TYPE_PUBLIC );

discoveryParams.taskID = hciExtApp_TaskID;
discoveryParams.mode = DEVDISC_MODE_ALL;
discoveryParams.nameMode = true;

discoveryParams.whiteList = true;

GAP_DeviceInit( hciExtApp_TaskID, GAP_PROFILE_CENTRAL, 1, IRK, SRK, &hciExtSignCounter );

GAP_DeviceDiscoveryRequest(&discoveryParams);