嗨对话框:
我使用DA的ble dongle与DA14580通信的时候，在数据通信过程中发现蓝牙会断开，这时候能发现蓝牙信号，但是无法再与da14580连接了，现象是一连马上就断开了。请问下 这是什么问题？
我使用第三方工具去连接也不行，如使用linght blue去连接，提示“”“timeout interrogating the peripheral”错误。
必须重启设备才能连接，我使用SDK版本是 3.0.6。
下面是我用cypress dongle抓的连接log，也是异常情况下，无法连接的log。
[16:53:36:525] : 'Resolve and Set Peer Device BD Address' request sent
[16:53:36:525]: Typ BD地址e: PUBLIC_ADDRESS
[16:53:36:525] : BD Address: 02:0F:00:03:04:17:00:00
[16:53:36:552] : 'Command Status' event received
[16:53:36:552] : Status: BLE_STATUS_OK
[16:53:36:552] : 'Resolve and Set Peer Device BD Address Response' event received
[16:53:36:552] : Status: 0x01
[16:53:36:552] : 'Command Complete' event received
[16:53:36:552] : Status: BLE_STATUS_OK
[16:53:36:552] : 'Establish Connection' request sent
[16:53:36:552] : BD Address Type: PUBLIC_ADDRESS
[16:53:36:552] : BD Address: 02:0F:00:03:04:17:00:00
[16:53:36:557] : 'Command Status' event received
[16:53:36:557] : Status: BLE_STATUS_OK
[16:53:36:844] : 'Establish Connection Response' event received
[16:53:37:148] : 'Current Connection Parameters' event received
[16:53:37:148] : HCI Status: 0x00
[16:53:37:148] : Connection Interval: 8.75 ms
[16:53:37:148] : Slave Latency: 0
[16:53:37:148] : Supervision Timeout: 100 ms
[16:53:37:149] : 'Command Complete' event received
[16:53:37:149] : Status: BLE_STATUS_OK
[16:53:37:149] : 'Connection Terminated Notification' event received
[16:53:37:149] : Reason: CONNECTION_FAILED_TO_BE_ESTABLISHED
[16:53:37:149] : 'Get local device security keys' request sent
[16:53:37:202] : 'Command Status' event received
[16:53:37:202] : Status: BLE_STATUS_OK
[16:53:37:202] : 'Get local device security keys response' event received
[16:53:37:202] : Key flags: INITIATOR_ENCRYPTION_INFORMATION, INITIATOR_IDENTITY_INFORMATION, INITIATOR_SIGNATURE_KEY, RESPONDER_ENCRYPTION_INFORMATION, RESPONDER_IDENTITY_INFORMATION, RESPONDER_SIGNATURE_KEY
[16:53:37:202] : Long Term Key (LTK): [D6:93:E8:A4:23:55:48:99:1D:77:61:E6:63:2B:10:8E]
[16:53:37:202] : Encrypted Diversifier (EDIV) and Random Number: [99:1F:26:1E:F6:09:97:2E:AD:7E]
[16:53:37:202] : Identity Resolving Key (IRK): [0A:2D:F4:65:E3:BD:7B:49:1E:B4:C0:95:95:13:46:73]
[16:53:37:202] : Identification Address: [0x00A0500A0D27, PUBLIC_ADDRESS]
[16:53:37:202] : Connection Signature Resolving Key (CSRK): [90:D5:06:95:92:ED:91:D7:A8:9E:2C:DC:4A:93:5B:F9]
[16:53:37:203] : 'Command Complete' event received
[16:53:37:203] : Status: BLE_STATUS_OK
SDK3.0.6版本过旧了，BLE Stack存在一些已知的问题会导致你所见的情况发生， 我们这边建议您把工程建立在比较新的SDK上（5.0.2或以上）
这边提供一个基于3.0.6的小补丁，你可以尝试一下是否能改善情况。
请按以下内容修改至dk_apps/src/ip/ble/ll/src/rwble/rwble.c
@@ -614,6 +617,16 @@ void $Sub$$BLE_EVENT_Handler(void)
lld_evt_end_isr();
+ // Do a SW reset
+ // Reset the BLE state machines
+ ble_master_soft_rst_setf(1);
+ while(ble_master_soft_rst_getf());
+ //If an encryption was on going restart it
+ if( ble_aes_start_getf())
+ {
+ ble_aescntl_set(BLE_AES_START_BIT);
+ }
+
rwble_last_event = BLE_EVT_END;
}
}
@@ -986,6 +999,16 @@ void $Sub$$BLE_EVENT_Handler(void)
#endif // METRICS
lld_evt_end_isr();
+ // Do a SW reset
+ // Reset the BLE state machines
+ ble_master_soft_rst_setf(1);
+ while(ble_master_soft_rst_getf());
+ //If an encryption was on going restart it
+ if( ble_aes_start_getf())
+ {
+ ble_aescntl_set(BLE_AES_START_BIT);
+ }
+
rwble_last_event = BLE_EVT_END;
}
}
hi Qinjiny_Dialog:
谢谢你的回答，我将尽快添加你给的补丁，测试下，并将结果返回给你。
还有在SDK 5.0.2里面有两个void $Sub$$BLE_EVENT_Handler(void) 函数，和你的这个补丁一样，但是3.0.6里面只有一个，是否只需要改这个？
这个只是针对已知常见问题的fix，更新的SDK里还有其他改动，可以的话还是switch过去比较好
hi Qinjiny_Dialog：
好的，非常感谢！目前添加了这个补丁，经过测试，应该是有解决了目前的问题。我将在后面移植到最新的SDK上面。