树莓PI蓝牙RFcomm立即断开连接
树莓PI蓝牙RFcomm立即断开连接
提问于 2021-12-19 20:08:03
我正试图在Windows10计算机上创建一个Raspberry Pi和一个.NET应用程序之间的连接。到目前为止，我已经成功地对这两个设备。下一步是在它们之间发送数据。
为此，我使用以下命令开始侦听端口
sudo rfcomm watch /dev/rfcomm 1
当我在Windows机器上使用PuTTY建立连接时，它工作得很好，所以我想我正确地配置了Raspberry。
但是，我的目标是通过.NET应用程序建立连接。当我运行这个应用程序时，它确实连接，但之后立即断开连接。
pi@raspberrypi:~ $ sudo rfcomm watch /dev/rfcomm 1等待从B4:0E:DE:13:FB:D6到/dev/rfcomm 1的通道1连接，按CTRL键，用于断开等待通道1的连接
我对.NET应用程序使用了以下代码。
using System;
using System.IO.Ports;
namespace ControllerManager
{
class Program
{
static void Main(string[] args)
{
string[] ports = SerialPort.GetPortNames();
Console.WriteLine("The following serial ports were found:");
foreach (string port in ports)
{
Console.WriteLine(port);
}
if (ports.Length > 0)
{
SerialPort Port = new SerialPort("COM12", 9600, Parity.None, 8, StopBits.One)
{
Handshake = Handshake.XOnXOff
};
Console.WriteLine("");
Console.WriteLine($"Opened {Port.PortName}");
if (!Port.IsOpen) Port.Open();
Console.ReadKey();
}
}
}
}使用.NET应用程序的Sudo响应：
pi@raspberrypi:~ $ sudo btmon
Bluetooth monitor ver 5.55
= Note: Linux version 5.10.63-v7+ (armv7l) 0.457478
= Note: Bluetooth subsystem version 2.22 0.457492
= New Index: B8:27:EB:B5:04:83 (Primary,UART,hci0) [hci0] 0.457502
= Open Index: B8:27:EB:B5:04:83 [hci0] 0.457506
= Index Info: B8:27:EB:B5:04:83 (Cypress Semiconductor) [hci0] 0.457512
@ MGMT Open: bluetoothd (privileged) version 1.18 {0x0001} 0.457518
> HCI Event: Connect Request (0x04) plen 10 #1 [hci0] 105.381895
Address: B4:0E:DE:13:FB:D6 (Intel Corporate)
Class: 0x2a010c
Major class: Computer (desktop, notebook, PDA, organizers)
Minor class: Laptop
Networking (LAN, Ad hoc)
Capturing (Scanner, Microphone)
Audio (Speaker, Microphone, Headset)
Link type: ACL (0x01)
< HCI Command: Accept Connection R.. (0x01|0x0009) plen 7 #2 [hci0] 105.382027
Address: B4:0E:DE:13:FB:D6 (Intel Corporate)
Role: Master (0x00)
> HCI Event: Command Status (0x0f) plen 4 #3 [hci0] 105.382508
Accept Connection Request (0x01|0x0009) ncmd 1
Status: Success (0x00)
> HCI Event: Role Change (0x12) plen 8 #4 [hci0] 105.541361
Status: Success (0x00)
Address: B4:0E:DE:13:FB:D6 (Intel Corporate)
Role: Master (0x00)
> HCI Event: Connect Complete (0x03) plen 11 #5 [hci0] 105.562721
Status: Success (0x00)
Handle: 11
Address: B4:0E:DE:13:FB:D6 (Intel Corporate)
Link type: ACL (0x01)
Encryption: Disabled (0x00)
< HCI Command: Read Remote Support.. (0x01|0x001b) plen 2 #6 [hci0] 105.563343
Handle: 11
> HCI Event: Command Status (0x0f) plen 4 #7 [hci0] 105.564214
Read Remote Supported Features (0x01|0x001b) ncmd 1
Status: Success (0x00)
< HCI Command: Write Scan Enable (0x03|0x001a) plen 1 #8 [hci0] 105.564316
Scan enable: No Scans (0x00)
> HCI Event: Read Remote Supported Featu.. (0x0b) plen 11 #9 [hci0] 105.564769
Status: Success (0x00)
Handle: 11
Features: 0xbf 0xfe 0x0f 0xfe 0xdb 0xff 0x7b 0x87
3 slot packets
5 slot packets
Encryption
Slot offset
Timing accuracy
Role switch
Sniff mode
Power control requests
Channel quality driven data rate (CQDDR)
SCO link
HV2 packets
HV3 packets
u-law log synchronous data
A-law log synchronous data
CVSD synchronous data
Paging parameter negotiation
Power control
Transparent synchronous data
Enhanced Data Rate ACL 2 Mbps mode
Enhanced Data Rate ACL 3 Mbps mode
Enhanced inquiry scan
Interlaced inquiry scan
Interlaced page scan
RSSI with inquiry results
Extended SCO link (EV3 packets)
EV4 packets
EV5 packets
AFH capable slave
AFH classification slave
LE Supported (Controller)
3-slot Enhanced Data Rate ACL packets
5-slot Enhanced Data Rate ACL packets
Sniff subrating
Pause encryption
AFH capable master
AFH classification master
Enhanced Data Rate eSCO 2 Mbps mode
Enhanced Data Rate eSCO 3 Mbps mode
3-slot Enhanced Data Rate eSCO packets
Extended Inquiry Response
Simultaneous LE and BR/EDR (Controller)
Secure Simple Pairing
Encapsulated PDU
Erroneous Data Reporting
Non-flushable Packet Boundary Flag
Link Supervision Timeout Changed Event
Inquiry TX Power Level
Enhanced Power Control
Extended features
> HCI Event: Command Complete (0x0e) plen 4 #10 [hci0] 105.565058
Write Scan Enable (0x03|0x001a) ncmd 1
Status: Success (0x00)< ACL Data TX: Handle 11 flags 0x00 dlen 12 #76 [hci0] 36.293040
Channel: 65 len 8 [PSM 3 mode Basic (0x00)] {chan 0}
RFCOMM: Unnumbered Info with Header Check (UIH) (0xef)
Address: 0x01 cr 0 dlci 0x00
Control: 0xef poll/final 0
Length: 4
FCS: 0xaa
MCC Message type: Modem Status Command RSP (0x38)
Length: 2
dlci 2
fc 0 rtc 1 rtr 1 ic 0 dv 1
> HCI Event: Number of Completed Packets (0x13) plen 5 #77 [hci0] 36.316233
Num handles: 1
Handle: 11
Count: 2
> ACL Data RX: Handle 11 flags 0x02 dlen 18 #78 [hci0] 36.319919
Channel: 64 len 14 [PSM 3 mode Basic (0x00)] {chan 0}
RFCOMM: Unnumbered Info with Header Check (UIH) (0xef)
Address: 0x03 cr 1 dlci 0x00
Control: 0xef poll/final 0
Length: 10
FCS: 0x70
MCC Message type: Remote Port Negotiation Command CMD (0x24)
Length: 8
dlci 2
br 3 db 0 sb 0 p 0 pt 0 xi 0 xo 0
rtri 0 rtro 0 rtci 0 rtco 0 xon 0 xoff 0
pm 0x0001
< ACL Data TX: Handle 11 flags 0x00 dlen 18 #79 [hci0] 36.320062
Channel: 65 len 14 [PSM 3 mode Basic (0x00)] {chan 0}
RFCOMM: Unnumbered Info with Header Check (UIH) (0xef)
Address: 0x01 cr 0 dlci 0x00
Control: 0xef poll/final 0
Length: 10
FCS: 0xaa
MCC Message type: Remote Port Negotiation Command RSP (0x24)
Length: 8
dlci 2
br 3 db 0 sb 0 p 0 pt 0 xi 0 xo 0
rtri 0 rtro 0 rtci 0 rtco 0 xon 0 xoff 0
pm 0x3f7f
> HCI Event: Number of Completed Packets (0x13) plen 5 #80 [hci0] 36.322590
Num handles: 1
Handle: 11
Count: 2
> ACL Data RX: Handle 11 flags 0x02 dlen 18 #81 [hci0] 36.324936
Channel: 64 len 14 [PSM 3 mode Basic (0x00)] {chan 0}
RFCOMM: Unnumbered Info with Header Check (UIH) (0xef)
Address: 0x03 cr 1 dlci 0x00
Control: 0xef poll/final 0
Length: 10
FCS: 0x70
MCC Message type: Remote Port Negotiation Command CMD (0x24)
Length: 8
dlci 2
br 3 db 0 sb 0 p 0 pt 0 xi 0 xo 0
rtri 0 rtro 0 rtci 0 rtco 0 xon 0 xoff 0
pm 0x0001
< ACL Data TX: Handle 11 flags 0x00 dlen 18 #82 [hci0] 36.325051
Channel: 65 len 14 [PSM 3 mode Basic (0x00)] {chan 0}
RFCOMM: Unnumbered Info with Header Check (UIH) (0xef)
Address: 0x01 cr 0 dlci 0x00
Control: 0xef poll/final 0
Length: 10
FCS: 0xaa
MCC Message type: Remote Port Negotiation Command RSP (0x24)
Length: 8
dlci 2
br 3 db 0 sb 0 p 0 pt 0 xi 0 xo 0
rtri 0 rtro 0 rtci 0 rtco 0 xon 0 xoff 0
pm 0x3f7f
> ACL Data RX: Handle 11 flags 0x02 dlen 12 #83 [hci0] 36.329897
Channel: 64 len 8 [PSM 3 mode Basic (0x00)] {chan 0}
RFCOMM: Unnumbered Info with Header Check (UIH) (0xef)
Address: 0x03 cr 1 dlci 0x00
Control: 0xef poll/final 0
Length: 4
FCS: 0x70
MCC Message type: Modem Status Command CMD (0x38)
Length: 2
dlci 2
fc 0 rtc 1 rtr 0 ic 0 dv 0
< ACL Data TX: Handle 11 flags 0x00 dlen 12 #84 [hci0] 36.330044
Channel: 65 len 8 [PSM 3 mode Basic (0x00)] {chan 0}
RFCOMM: Unnumbered Info with Header Check (UIH) (0xef)
Address: 0x01 cr 0 dlci 0x00
Control: 0xef poll/final 0
Length: 4
FCS: 0xaa
MCC Message type: Modem Status Command RSP (0x38)
Length: 2
dlci 2
fc 0 rtc 1 rtr 0 ic 0 dv 0
< ACL Data TX: Handle 11 flags 0x00 dlen 8 #85 [hci0] 36.330290
Channel: 65 len 4 [PSM 3 mode Basic (0x00)] {chan 0}
RFCOMM: Disconnect (DISC) (0x43)
Address: 0x09 cr 0 dlci 0x02
Control: 0x53 poll/final 1
Length: 0
FCS: 0xd9
> HCI Event: Number of Completed Packets (0x13) plen 5 #86 [hci0] 36.333749
Num handles: 1
Handle: 11
Count: 2
> ACL Data RX: Handle 11 flags 0x02 dlen 12 #87 [hci0] 36.336186
Channel: 64 len 8 [PSM 3 mode Basic (0x00)] {chan 0}
RFCOMM: Unnumbered Info with Header Check (UIH) (0xef)
Address: 0x03 cr 1 dlci 0x00
Control: 0xef poll/final 0
Length: 4
FCS: 0x70
MCC Message type: Modem Status Command CMD (0x38)
Length: 2
dlci 2
fc 0 rtc 0 rtr 0 ic 0 dv 0
< ACL Data TX: Handle 11 flags 0x00 dlen 12 #88 [hci0] 36.336372
Channel: 65 len 8 [PSM 3 mode Basic (0x00)] {chan 0}
RFCOMM: Unnumbered Info with Header Check (UIH) (0xef)
Address: 0x01 cr 0 dlci 0x00
Control: 0xef poll/final 0
Length: 4
FCS: 0xaa
MCC Message type: Modem Status Command RSP (0x38)
Length: 2
dlci 2
fc 0 rtc 0 rtr 0 ic 0 dv 0
> ACL Data RX: Handle 11 flags 0x02 dlen 8 #89 [hci0] 36.337405
Channel: 64 len 4 [PSM 3 mode Basic (0x00)] {chan 0}
RFCOMM: Unnumbered Ack (UA) (0x63)
Address: 0x09 cr 0 dlci 0x02
Control: 0x73 poll/final 1
Length: 0
FCS: 0xf3
< ACL Data TX: Handle 11 flags 0x00 dlen 8 #90 [hci0] 36.337588
Channel: 65 len 4 [PSM 3 mode Basic (0x00)] {chan 0}
RFCOMM: Disconnect (DISC) (0x43)
Address: 0x01 cr 0 dlci 0x00
Control: 0x53 poll/final 1
Length: 0
FCS: 0x9c
> HCI Event: Number of Completed Packets (0x13) plen 5 #91 [hci0] 36.340002
Num handles: 1
Handle: 11
Count: 2
> ACL Data RX: Handle 11 flags 0x02 dlen 8 #92 [hci0] 36.344859
Channel: 64 len 4 [PSM 3 mode Basic (0x00)] {chan 0}
RFCOMM: Unnumbered Ack (UA) (0x63)
Address: 0x01 cr 0 dlci 0x00
Control: 0x73 poll/final 1
Length: 0
FCS: 0xb6
< ACL Data TX: Handle 11 flags 0x00 dlen 12 #93 [hci0] 36.345027
L2CAP: Disconnection Request (0x06) ident 6 len 4
Destination CID: 65
Source CID: 64
> ACL Data RX: Handle 11 flags 0x02 dlen 12 #94 [hci0] 36.387495
L2CAP: Disconnection Response (0x07) ident 6 len 4
Destination CID: 65
Source CID: 64
> HCI Event: Number of Completed Packets (0x13) plen 5 #95 [hci0] 36.387898
Num handles: 1
Handle: 11
Count: 2
> HCI Event: Disconnect Complete (0x05) plen 4 #96 [hci0] 39.523319
Status: Success (0x00)
Handle: 11
Reason: Remote User Terminated Connection (0x13)
@ MGMT Event: Device Disconnected (0x000c) plen 8 {0x0001} [hci0] 39.523393
BR/EDR Address: B4:0E:DE:13:FB:D6 (Intel Corporate)
Reason: Connection terminated by remote host (0x03)
< HCI Command: Write Scan Enable (0x03|0x001a) plen 1 #97 [hci0] 39.645666
Scan enable: Page Scan (0x02)
> HCI Event: Command Complete (0x0e) plen 4 #98 [hci0] 39.646023
Write Scan Enable (0x03|0x001a) ncmd 1
Status: Success (0x00)对如何解决这个问题有什么建议吗？，谢谢。
回答 1
Stack Overflow用户
回答已采纳
发布于 2022-01-06 13:27:56
因此，我仍然未能正确地使用System.IO.ports库；相反，我现在使用的是InTheHand蓝牙库，它的功能很好。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/70414931
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