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关于cc2640r2f使用btool连接问题

Other Parts Discussed in Thread: CC2640R2F

环境描述如下:

cc2640r2f已经烧录ble5 host_test_app,使用与之配套的btool,当尝试连接ble设备时,上报GAP Link Establish超时。

btool打印消息如下:

[15] : <Tx> - 02:41:25.520
-Type : 0x01 (Command)
-OpCode : 0xFE62 (GapInit_connect)
-Data Length : 0x0A (10) byte(s)
PeerAddrType : 0x00 (0) (PEER_ADDRTYPE_PUBLIC_OR_PUBLIC_ID)
PeerAddr : 01:6D:26:8E:F4:1F
InitiatingPhy : 0x01 (1) (
INIT_PHY_1M)
Timeout : 0x0000 (0)
Dump(Tx):
0000:01 62 FE 0A 00 1F F4 8E 26 6D 01 01 00 00 .b......&m....
--------------------------------------------------------------------
[16] : <Rx> - 02:41:25.548
-Type : 0x04 (Event)
-EventCode : 0x00FF (HCI_LE_ExtEvent)
-Data Length : 0x06 (6) bytes(s)
Event : 0x067F (1663) (GAP_HCI_ExtentionCommandStatus)
Status : 0x00 (0) (SUCCESS)
OpCode : 0xFE62 (GapInit_connect)
DataLength : 0x00 (0)
Dump(Rx):
0000:04 FF 06 7F 06 00 62 FE 00 ......b..
--------------------------------------------------------------------
[17] : <Warning> - 02:41:55.546
GAP Link Establish Request Timeout

请问这是什么原因?如何解决