Bluetooth BlueZ LE远程使用功能
我用BlueZ来处理可编程设备。我从源代码处编译了它,并围绕它编写了一个包装器 我在搜索这一点点信息:Bluetooth BlueZ LE远程使用功能,bluetooth,bluetooth-lowenergy,bluez,Bluetooth,Bluetooth Lowenergy,Bluez,我用BlueZ来处理可编程设备。我从源代码处编译了它,并围绕它编写了一个包装器 我在搜索这一点点信息: “LE Read Remote Used Features”命令的用途是什么 它可以读取哪些功能 连接到可扩展设备时,这是必需的吗 连接后禁用查询是否安全 是否可以增加接收此命令响应的超时时间 我的问题是,我的解决方案已经适用于某些设备(可以连接到它们),但对于特定的设备,很多时候由于超时而导致连接失败 我已经在连接失败时使用btmon创建了一个嗅探: # btmon Bluetooth
- “LE Read Remote Used Features”命令的用途是什么李>
- 它可以读取哪些功能
- 连接到可扩展设备时,这是必需的吗
- 连接后禁用查询是否安全
- 是否可以增加接收此命令响应的超时时间
# btmon
Bluetooth monitor ver 5.50
= Note: Linux version 4.19.97-v7l+ (armv7l) 0.742019
= Note: Bluetooth subsystem version 2.22 0.742027
= New Index: AA:BB:CC:DD:EE:FF (Primary,UART,hci0) [hci0] 0.742030
= Open Index: AA:BB:CC:DD:EE:FF [hci0] 0.742033
= Index Info: AA:BB:CC:D.. (Cypress Semiconductor Corporation) [hci0] 0.742035
@ MGMT Open: bluetoothd (privileged) version 1.14 {0x0001} 0.742038
@ MGMT Open: btmon (privileged) version 1.14 {0x0002} 0.742321
< HCI Command: LE Set Scan Parameters (0x08|0x000b) plen 7 #1 [hci0] 4.737267
Type: Passive (0x00)
Interval: 60.000 msec (0x0060)
Window: 30.000 msec (0x0030)
Own address type: Public (0x00)
Filter policy: Ignore not in white list (0x01)
> HCI Event: Command Complete (0x0e) plen 4 #2 [hci0] 4.737714
LE Set Scan Parameters (0x08|0x000b) ncmd 1
Status: Success (0x00)
< HCI Command: LE Set Scan Enable (0x08|0x000c) plen 2 #3 [hci0] 4.737767
Scanning: Enabled (0x01)
Filter duplicates: Enabled (0x01)
> HCI Event: Command Complete (0x0e) plen 4 #4 [hci0] 4.738160
LE Set Scan Enable (0x08|0x000c) ncmd 1
Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 42 #5 [hci0] 6.099681
LE Advertising Report (0x02)
Num reports: 1
Event type: Connectable undirected - ADV_IND (0x00)
Address type: Public (0x00)
Address: FF:EE:DD:CC:BB:AA
Data length: 30
Flags: 0x06
LE General Discoverable Mode
BR/EDR Not Supported
Company: Apple, Inc. (76)
Type: iBeacon (2)
UUID: 669a0c20-0008-6c91-e411-015500e22ea9
Version: 48661.62728
TX power: -59 dB
RSSI: -78 dBm (0xb2)
< HCI Command: LE Set Scan Enable (0x08|0x000c) plen 2 #6 [hci0] 6.099747
Scanning: Disabled (0x00)
Filter duplicates: Disabled (0x00)
> HCI Event: Command Complete (0x0e) plen 4 #7 [hci0] 6.101862
LE Set Scan Enable (0x08|0x000c) ncmd 1
Status: Success (0x00)
< HCI Command: LE Create Connection (0x08|0x000d) plen 25 #8 [hci0] 6.101916
Scan interval: 60.000 msec (0x0060)
Scan window: 60.000 msec (0x0060)
Filter policy: White list is not used (0x00)
Peer address type: Public (0x00)
Peer address: FF:EE:DD:CC:BB:AA
Own address type: Public (0x00)
Min connection interval: 30.00 msec (0x0018)
Max connection interval: 50.00 msec (0x0028)
Connection latency: 0 (0x0000)
Supervision timeout: 420 msec (0x002a)
Min connection length: 0.000 msec (0x0000)
Max connection length: 0.000 msec (0x0000)
> HCI Event: Command Status (0x0f) plen 4 #9 [hci0] 6.102446
LE Create Connection (0x08|0x000d) ncmd 1
Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 19 #10 [hci0] 7.476997
LE Connection Complete (0x01)
Status: Success (0x00)
Handle: 64
Role: Master (0x00)
Peer address type: Public (0x00)
Peer address: FF:EE:DD:CC:BB:AA
Connection interval: 48.75 msec (0x0027)
Connection latency: 0 (0x0000)
Supervision timeout: 420 msec (0x002a)
Master clock accuracy: 0x00
@ MGMT Event: Device Connected (0x000b) plen 43 {0x0002} [hci0] 7.477047
LE Address: FF:EE:DD:CC:BB:AA
Flags: 0x00000000
Data length: 30
Flags: 0x06
LE General Discoverable Mode
BR/EDR Not Supported
Company: Apple, Inc. (76)
Type: iBeacon (2)
UUID: 669a0c20-0008-6c91-e411-015500e22ea9
Version: 48661.62728
TX power: -59 dB
@ MGMT Event: Device Connected (0x000b) plen 43 {0x0001} [hci0] 7.477047
LE Address: FF:EE:DD:CC:BB:AA
Flags: 0x00000000
Data length: 30
Flags: 0x06
LE General Discoverable Mode
BR/EDR Not Supported
Company: Apple, Inc. (76)
Type: iBeacon (2)
UUID: UUID
Version: 48661.62728
TX power: -59 dB
< HCI Command: LE Read Remote Used... (0x08|0x0016) plen 2 #11 [hci0] 7.477210
Handle: 64
> HCI Event: Command Status (0x0f) plen 4 #12 [hci0] 7.479342
LE Read Remote Used Features (0x08|0x0016) ncmd 1
Status: Success (0x00)
> HCI Event: Command Complete (0x0e) plen 14 #13 [hci0] 7.479357
LE Read Remote Used Features (0x08|0x0016) ncmd 1
Status: Success (0x00)
00 00 00 00 00 00 00 00 00 00 ..........
> HCI Event: LE Meta Event (0x3e) plen 12 #14 [hci0] 7.993969
LE Read Remote Used Features (0x04)
Status: Connection Timeout (0x08)
Handle: 64
Features: 0x2d 0x00 0x00 0x00 0x00 0x00 0x00 0x00
LE Encryption
Extended Reject Indication
Slave-initiated Features Exchange
LE Data Packet Length Extension
> HCI Event: Disconnect Complete (0x05) plen 4 #15 [hci0] 7.994591
Status: Success (0x00)
Handle: 64
Reason: Connection Timeout (0x08)
@ MGMT Event: Device Disconnected (0x000c) plen 8 {0x0002} [hci0] 8.027693
LE Address: FF:EE:DD:CC:BB:AA
Reason: Connection timeout (0x01)
@ MGMT Event: Device Disconnected (0x000c) plen 8 {0x0001} [hci0] 8.027693
LE Address: FF:EE:DD:CC:BB:AA
Reason: Connection timeout (0x01)
#btmon
蓝牙监视器5.50版
=注:Linux版本4.19.97-v7l+(armv7l)0.742019
=注:蓝牙子系统版本2.22 0.742027
=新指数:AA:BB:CC:DD:EE:FF(初级、UART、hci0)[hci0]0.742030
=开放指数:AA:BB:CC:DD:EE:FF[hci0]0.742033
=索引信息:AA:BB:CC:D。。(赛普拉斯半导体公司)[hci0]0.742035
@管理开放:蓝牙(特权)版本1.14{0x0001}0.742038
@管理打开:btmon(特权)版本1.14{0x0002}0.742321
HCI事件:命令完成(0x0e)plen 4#2[hci0]4.737714
LE设置扫描参数(0x08 | 0x000b)ncmd 1
状态:成功(0x00)
HCI事件:命令完成(0x0e)plen 4#4[hci0]4.738160
LE设置扫描启用(0x08 | 0x000c)ncmd 1
状态:成功(0x00)
>HCI事件:LE元事件(0x3e)plen 42#5[hci0]6.099681
乐视广告报道(0x02)
报告数量:1
事件类型:可连接的无方向-ADV_IND(0x00)
地址类型:公共(0x00)
地址:FF:EE:DD:CC:BB:AA
数据长度:30
标志:0x06
通用可发现模式
BR/EDR不受支持
公司:苹果公司(76)
类型:iBeacon(2)
UUID:669a0c20-0008-6c91-e411-015500e22ea9
版本:48661.62728
发射功率:-59分贝
RSSI:-78 dBm(0xb2)
HCI事件:命令完成(0x0e)plen 4#7[hci0]6.101862
LE设置扫描启用(0x08 | 0x000c)ncmd 1
状态:成功(0x00)
HCI事件:命令状态(0x0f)plen 4#9[hci0]6.102446
LE创建连接(0x08 | 0x000d)ncmd 1
状态:成功(0x00)
>HCI事件:LE元事件(0x3e)plen 19#10[hci0]7.476997
LE连接完成(0x01)
状态:成功(0x00)
句柄:64
角色:主机(0x00)
对等地址类型:公共(0x00)
对等地址:FF:EE:DD:CC:BB:AA
连接间隔:48.75毫秒(0x0027)
连接延迟:0(0x0000)
监督超时:420毫秒(0x002a)
主时钟精度:0x00
@管理事件:设备已连接(0x000b)plen 43{0x0002}[hci0]7.477047
LE地址:FF:EE:DD:CC:BB:AA
标志:0x00000000
数据长度:30
标志:0x06
通用可发现模式
BR/EDR不受支持
公司:苹果公司(76)
类型:iBeacon(2)
UUID:669a0c20-0008-6c91-e411-015500e22ea9
版本:48661.62728
发射功率:-59分贝
@管理事件:设备已连接(0x000b)plen 43{0x0001}[hci0]7.477047
LE地址:FF:EE:DD:CC:BB:AA
标志:0x00000000
数据长度:30
标志:0x06
通用可发现模式
BR/EDR不受支持
公司:苹果公司(76)
类型:iBeacon(2)
UUID:UUID
版本:48661.62728
发射功率:-59分贝
HCI事件:命令状态(0x0f)plen 4#12[hci0]7.479342
LE读取远程使用功能(0x08 | 0x0016)ncmd 1
状态:成功(0x00)
>HCI事件:命令完成(0x0e)plen 14#13[hci0]7.479357
LE读取远程使用功能(0x08 | 0x0016)ncmd 1
状态:成功(0x00)
00 00 00 00 00 00 00 00 00 00 ..........
>HCI事件:LE元事件(0x3e)plen 12#14[hci0]7.993969
LE读取远程使用的功能(0x04)
状态:连接超时(0x08)
句柄:64
功能:0x2d 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
加密
扩展拒绝指示
从机启动的功能交换
数据包长度扩展
>HCI事件:断开Compl
Handle: 128
HCI Event: Command Status (0x0f) plen 4
LE Read Remote Used Features (0x08|0x0016) ncmd 1
Status: Success (0x00)
HCI Event: LE Meta Event (0x3e) plen 11
LE Data Length Change (0x07)
Handle: 128
Max TX octets: 251
Max TX time: 17040
Max RX octets: 251
Max RX time: 17040
HCI Event: LE Meta Event (0x3e) plen 12
LE Read Remote Used Features (0x04)
Status: Success (0x00)
Handle: 128
Features: 0x7f 0xfb 0x46 0x07 0x00 0x00 0x00 0x00
LE Encryption
Connection Parameter Request Procedure
Extended Reject Indication
Slave-initiated Features Exchange
LE Ping
LE Data Packet Length Extension
LL Privacy
LE 2M PHY
Stable Modulation Index - Transmitter
LE Coded PHY
LE Extended Advertising
LE Periodic Advertising
Channel Selection Algorithm #2
LE Power Class 1
Unknown features (0x0000000007460000)