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我正在尝试用 C# 替换 C 程序。C 程序通过 COM1 串行端口连接到旧计算机。我没有任何关于 C 代码如何连接到另一台机器的信息，但它确实连接正确，所以我必须猜测它是如何做到的。我一直在使用Portmon试图弄清楚 C 程序是如何成功读写的。当我的新 C# 应用程序运行时，我也一直在运行 Portmon。在我的 C# 程序中，我使用 SerialPort 类。

我试图通过在工作程序上使用 Portmon 的输出来确定 SerialPort 类中的不同项目应该具有什么值。我的想法是，如果我能得到正确的类的值，它就会正确地写入和读取。程序（如下）无法正常工作。程序成功打开 COM1 端口，但在尝试写入句点（然后是另一个句点）时失败。这些给出了超时。

查看在旧 C 程序后面运行的 Portmon 的输出，工作程序打开 COM1 端口，然后写一个句点，然后再写一个句点，然后从 COM1 端口读取成功值（&OK）。旧程序设置了几个我想在我的 C# 程序中复制的值。

我已经尝试了以下 SerialPort 选项的各种组合，但显然我没有找到任何东西。

顺便说一句，我在 Stack Overflow 问题Read and writing from a serial port in C#, part 2中问了一些初步问题

我在运行程序的机器上使用 Windows XP。COM1 端口另一边的机器是一台很旧的 PC。

有一个更好的方法吗？使用 Portmon 以外的东西？对于旧程序的 Portmon 输出，Process 列是 ntvdm.exe。那是问题吗？我不应该使用 C# SerialPort 类吗？可能最重要的问题是：我应该为 Serialport 类使用什么值来匹配旧程序？

我的 C# 程序：

SerialPort comport = new SerialPort();
comport.BaudRate = 9600;
comport.DataBits = 7;

comport.StopBits = StopBits.One;
comport.Parity = Parity.Odd;
comport.RtsEnable = true;
comport.DtrEnable = true;
comport.Handshake = Handshake.RequestToSend;
comport.ReadBufferSize = 8192;
comport.WriteBufferSize = 100;
comport.WriteTimeout = 30000; // 30 sec
comport.ReadTimeout = 30000; // 30 sec

comport.PortName = "COM1";

string tempFbuffer;
byte[] Fbuffer = new byte[200];
string alldata5;

tempFbuffer = "..";

for (int cnt = 0; cnt < tempFbuffer.Length; cnt++)
{
   Fbuffer[cnt] = Convert.ToByte(tempFbuffer[cnt]);
}

comport.Open();
comport.Write(Fbuffer, 0, 1);
comport.Write(Fbuffer, 1, 1);

for (i = 0; i < 4; i++)
{
    alldata5 = alldata5 + comport.ReadChar();

}

comport.Close();

我想模仿的应用程序的 Portmon 输出如下。此应用程序连接到另一台机器并正常工作。我手动将标题放在顶部。

如您所见，在第 33 和 34 行有成功的写入，然后在第 35 和 36 行有成功的读取。我在后台使用 Portmon 运行程序。

#       Time            Process         Reuest                          Port    Result   Other
0       0.00004407      ntvdm.exe       IRP_MJ_CREATE                   Serial0 SUCCESS Options: Open
1       0.00000198      ntvdm.exe       IOCTL_SERIAL_GET_BAUD_RATE      Serial0 SUCCESS
2       0.00000115      ntvdm.exe       IOCTL_SERIAL_GET_LINE_CONTROL   Serial0 SUCCESS
3       0.00000104      ntvdm.exe       IOCTL_SERIAL_GET_CHARS          Serial0 SUCCESS
4       0.00000106      ntvdm.exe       IOCTL_SERIAL_GET_HANDFLOW       Serial0 SUCCESS
5       0.0000008       ntvdm.exe       IOCTL_SERIAL_GET_BAUD_RATE      Serial0 SUCCESS
6       0.00000082      ntvdm.exe       IOCTL_SERIAL_GET_LINE_CONTROL   Serial0 SUCCESS
7       0.00000085      ntvdm.exe       IOCTL_SERIAL_GET_CHARS          Serial0 SUCCESS
8       0.00000081      ntvdm.exe       IOCTL_SERIAL_GET_HANDFLOW       Serial0 SUCCESS
9       0.00000712      ntvdm.exe       IOCTL_SERIAL_SET_BAUD_RATE      Serial0 SUCCESS Rate: 1200
10      0.00000349      ntvdm.exe       IOCTL_SERIAL_CLR_RTS            Serial0 SUCCESS
11      0.00000366      ntvdm.exe       IOCTL_SERIAL_CLR_DTR            Serial0 SUCCESS
12      0.00000225      ntvdm.exe       IOCTL_SERIAL_SET_LINE_CONTROL   Serial0 SUCCESS StopBits: 1 Parity: NONE WordLength: 5
13      0.00000111      ntvdm.exe       IOCTL_SERIAL_SET_CHAR           Serial0 SUCCESS EOF:0 ERR:0 BRK:0 EVT:0 XON:11 XOFF:13
14      0.00000735      ntvdm.exe       IOCTL_SERIAL_SET_HANDFLOW       Serial0 SUCCESS Shake:0 Replace:0 XonLimit:2048 XoffLimit:512
15      0.00000133      ntvdm.exe       IOCTL_SERIAL_LSRMST_INSERT      Serial0 SUCCESS Char: ffffffff
16      0.00000338      ntvdm.exe       IOCTL_SERIAL_SET_QUEUE_SIZE     Serial0 SUCCESS InSize: 8192 OutSize: 100
17      0.00000083      ntvdm.exe       IOCTL_SERIAL_GET_TIMEOUTS       Serial0 SUCCESS
18      0.00000092      ntvdm.exe       IOCTL_SERIAL_SET_TIMEOUTS       Serial0 SUCCESS RI:-1 RM:0 RC:0 WM:0 WC:0
19      0.00000349      ntvdm.exe       IOCTL_SERIAL_SET_DTR            Serial0 SUCCESS
20      0.00000342      ntvdm.exe       IOCTL_SERIAL_SET_RTS            Serial0 SUCCESS
21      0.00001121      ntvdm.exe       IOCTL_SERIAL_SET_BAUD_RATE      Serial0 SUCCESS Rate: 1200
22      0.00000262      ntvdm.exe       IOCTL_SERIAL_SET_WAIT_MASK      Serial0 SUCCESS Mask: RXCHAR CTS DSR RLSD ERR RING
23      36.94054111     ntvdm.exe       IOCTL_SERIAL_WAIT_ON_MASK       Serial0 SUCCESS
24      0.00000403      ntvdm.exe       IOCTL_SERIAL_CLR_DTR            Serial0 SUCCESS
25      0.00000356      ntvdm.exe       IOCTL_SERIAL_CLR_RTS            Serial0 SUCCESS
26      0.00000351      ntvdm.exe       IOCTL_SERIAL_SET_DTR            Serial0 SUCCESS
27      0.00000348      ntvdm.exe       IOCTL_SERIAL_SET_RTS            Serial0 SUCCESS
28      0.00000717      ntvdm.exe       IOCTL_SERIAL_SET_BAUD_RATE      Serial0 SUCCESS Rate: 9600
29      0.00000145      ntvdm.exe       IOCTL_SERIAL_GET_LINE_CONTROL   Serial0 SUCCESS
30      0.00000246      ntvdm.exe       IOCTL_SERIAL_SET_LINE_CONTROL   Serial0 SUCCESS StopBits: 1 Parity: ODD WordLength: 5
31      0.00000086      ntvdm.exe       IOCTL_SERIAL_GET_LINE_CONTROL   Serial0 SUCCESS
32      0.00000226      ntvdm.exe       IOCTL_SERIAL_SET_LINE_CONTROL   Serial0 SUCCESS StopBits: 1 Parity: ODD WordLength: 7
33      0.00002222      ntvdm.exe       IRP_MJ_WRITE                    Serial0 SUCCESS Length 1: .
34      0.00002142      ntvdm.exe       IRP_MJ_WRITE                    Serial0 SUCCESS Length 1: .
35      0.00000562      ntvdm.exe       IRP_MJ_READ                     Serial0 SUCCESS Length 4: &OK.
36      0.00000239      ntvdm.exe       IRP_MJ_READ                     Serial0 SUCCESS Length 0:
37      0.00000533      ntvdm.exe       IOCTL_SERIAL_WAIT_ON_MASK       Serial0 SUCCESS
38      0.0000023       ntvdm.exe       IRP_MJ_READ                     Serial0 SUCCESS Length 0:
39      95.8854497      ntvdm.exe       IOCTL_SERIAL_WAIT_ON_MASK       Serial0 SUCCESS
40      0.00002486      ntvdm.exe       IRP_MJ_WRITE                    Serial0 SUCCESS Length 1: D

我正在创建的 C# 应用程序的 Portmon 输出如下。上面的 C# 代码在后台使用 Portmon 运行时会创建此输出。我把标题。

如您所见，在写入期间第 69 行出现超时错误。我需要它与 C 足够接近，以便写入和读取工作。

显然波特率、字长、奇偶校验和其他几个设置正确。

#       Time            Process         Reuest                          Port    Result   Other
0       0.00004362      fancom.exe      IRP_MJ_CREATE                   Serial0 SUCCESS Options: Open
1       0.0000019       fancom.exe      IOCTL_SERIAL_GET_PROPERTIES     Serial0 SUCCESS
2       0.00000263      fancom.exe      IOCTL_SERIAL_GET_MODEMSTATUS    Serial0 SUCCESS
3       0.00000096      fancom.exe      IOCTL_SERIAL_GET_BAUD_RATE      Serial0 SUCCESS
4       0.00000097      fancom.exe      IOCTL_SERIAL_GET_LINE_CONTROL   Serial0 SUCCESS
5       0.00000084      fancom.exe      IOCTL_SERIAL_GET_CHARS          Serial0 SUCCESS
6       0.00000097      fancom.exe      IOCTL_SERIAL_GET_HANDFLOW       Serial0 SUCCESS
7       0.00000081      fancom.exe      IOCTL_SERIAL_GET_BAUD_RATE      Serial0 SUCCESS
8       0.00000088      fancom.exe      IOCTL_SERIAL_GET_LINE_CONTROL   Serial0 SUCCESS
9       0.0000008       fancom.exe      IOCTL_SERIAL_GET_CHARS          Serial0 SUCCESS
10      0.00000079      fancom.exe      IOCTL_SERIAL_GET_HANDFLOW       Serial0 SUCCESS
11      0.00000715      fancom.exe      IOCTL_SERIAL_SET_BAUD_RATE      Serial0 SUCCESS Rate: 9600
12      0.00000355      fancom.exe      IOCTL_SERIAL_CLR_DTR            Serial0 SUCCESS
13      0.0000024       fancom.exe      IOCTL_SERIAL_SET_LINE_CONTROL   Serial0 SUCCESS StopBits: 1 Parity: ODD WordLength: 7
14      0.00000107      fancom.exe      IOCTL_SERIAL_SET_CHAR           Serial0 SUCCESS EOF:1a ERR:3f BRK:3f EVT:1a XON:11 XOFF:13
15      0.00000779      fancom.exe      IOCTL_SERIAL_SET_HANDFLOW       Serial0 SUCCESS Shake:8 Replace:84 XonLimit:1024 XoffLimit:1024
16      0.0000008       fancom.exe      IOCTL_SERIAL_GET_BAUD_RATE      Serial0 SUCCESS
17      0.00000081      fancom.exe      IOCTL_SERIAL_GET_LINE_CONTROL   Serial0 SUCCESS
18      0.00000081      fancom.exe      IOCTL_SERIAL_GET_CHARS          Serial0 SUCCESS
19      0.00000081      fancom.exe      IOCTL_SERIAL_GET_HANDFLOW       Serial0 SUCCESS
20      0.00000705      fancom.exe      IOCTL_SERIAL_SET_BAUD_RATE      Serial0 SUCCESS Rate: 9600
21      0.00000349      fancom.exe      IOCTL_SERIAL_SET_DTR            Serial0 SUCCESS
22      0.0000022       fancom.exe      IOCTL_SERIAL_SET_LINE_CONTROL   Serial0 SUCCESS StopBits: 1 Parity: ODD WordLength: 7
23      0.00000098      fancom.exe      IOCTL_SERIAL_SET_CHAR           Serial0 SUCCESS EOF:1a ERR:3f BRK:3f EVT:1a XON:11 XOFF:13
24      0.00000493      fancom.exe      IOCTL_SERIAL_SET_HANDFLOW       Serial0 SUCCESS Shake:9 Replace:84 XonLimit:1024 XoffLimit:1024
25      0.00000684      fancom.exe      IOCTL_SERIAL_SET_DTR            Serial0 SUCCESS
26      0.00000108      fancom.exe      IOCTL_SERIAL_SET_TIMEOUTS       Serial0 SUCCESS RI:-1 RM:-1 RC:30000 WM:0 WC:30000
27      0.00000227      fancom.exe      IOCTL_SERIAL_SET_WAIT_MASK      Serial0 SUCCESS Mask: RXCHAR RXFLAG CTS DSR RLSD BRK ERR RING
28      35.62327662     fancom.exe      IOCTL_SERIAL_WAIT_ON_MASK       Serial0 SUCCESS
29      0.00000399      fancom.exe      IOCTL_SERIAL_SET_QUEUE_SIZE     Serial0 SUCCESS InSize: 8192 OutSize: 100
30      30.00157726     fancom.exe      IRP_MJ_WRITE                    Serial0 TIMEOUT Length 1: .
31      0.00000767      fancom.exe      IRP_MJ_FLUSH_BUFFERS            Serial0 SUCCESS
32      0.00001012      fancom.exe      IOCTL_SERIAL_SET_WAIT_MASK      Serial0 SUCCESS Mask:
33      0.00000402      fancom.exe      IOCTL_SERIAL_CLR_DTR            Serial0 SUCCESS
34      0.00000116      fancom.exe      IRP_MJ_FLUSH_BUFFERS            Serial0 SUCCESS
35      0.0000023       fancom.exe      IOCTL_SERIAL_PURGE              Serial0 SUCCESS Purge: RXABORT RXCLEAR
36      0.00000163      fancom.exe      IOCTL_SERIAL_PURGE              Serial0 SUCCESS Purge: TXABORT TXCLEAR
37      0.00000404      fancom.exe      IRP_MJ_CLEANUP                  Serial0 SUCCESS
38      0.00322359      fancom.exe      IRP_MJ_CLOSE                    Serial0 SUCCESS
39      0.00004607      fancom.exe      IRP_MJ_CREATE                   Serial0 SUCCESS Options: Open
40      0.00000188      fancom.exe      IOCTL_SERIAL_GET_PROPERTIES     Serial0 SUCCESS
41      0.00000277      fancom.exe      IOCTL_SERIAL_GET_MODEMSTATUS    Serial0 SUCCESS
42      0.00000092      fancom.exe      IOCTL_SERIAL_GET_BAUD_RATE      Serial0 SUCCESS
43      0.00000112      fancom.exe      IOCTL_SERIAL_GET_LINE_CONTROL   Serial0 SUCCESS
44      0.0000008       fancom.exe  IOCTL_SERIAL_GET_CHARS          Serial0 SUCCESS
45      0.00000093      fancom.exe      IOCTL_SERIAL_GET_HANDFLOW       Serial0 SUCCESS
46      0.00000079      fancom.exe      IOCTL_SERIAL_GET_BAUD_RATE      Serial0 SUCCESS
47      0.00000085      fancom.exe      IOCTL_SERIAL_GET_LINE_CONTROL   Serial0 SUCCESS
48      0.00000081      fancom.exe      IOCTL_SERIAL_GET_CHARS          Serial0 SUCCESS
49      0.00000082      fancom.exe      IOCTL_SERIAL_GET_HANDFLOW       Serial0 SUCCESS
50      0.00000704      fancom.exe      IOCTL_SERIAL_SET_BAUD_RATE      Serial0 SUCCESS Rate: 9600
51      0.00000352      fancom.exe      IOCTL_SERIAL_CLR_DTR            Serial0 SUCCESS
52      0.00000225      fancom.exe      IOCTL_SERIAL_SET_LINE_CONTROL   Serial0 SUCCESS StopBits: 1 Parity: NONE WordLength: 8
53      0.00000113      fancom.exe      IOCTL_SERIAL_SET_CHAR           Serial0 SUCCESS EOF:1a ERR:0 BRK:0 EVT:1a XON:11 XOFF:13
54      0.00000489      fancom.exe      IOCTL_SERIAL_SET_HANDFLOW       Serial0 SUCCESS Shake:8 Replace:80 XonLimit:1024 XoffLimit:1024
55      0.00000084      fancom.exe      IOCTL_SERIAL_GET_BAUD_RATE      Serial0 SUCCESS
56      0.00000083      fancom.exe      IOCTL_SERIAL_GET_LINE_CONTROL   Serial0 SUCCESS
57      0.00000081      fancom.exe      IOCTL_SERIAL_GET_CHARS          Serial0 SUCCESS
58      0.00000081      fancom.exe      IOCTL_SERIAL_GET_HANDFLOW       Serial0 SUCCESS
59      0.00000696      fancom.exe      IOCTL_SERIAL_SET_BAUD_RATE      Serial0 SUCCESS Rate: 9600
60      0.00000344      fancom.exe      IOCTL_SERIAL_SET_DTR            Serial0 SUCCESS
61      0.00000222      fancom.exe      IOCTL_SERIAL_SET_LINE_CONTROL   Serial0 SUCCESS StopBits: 1 Parity: NONE WordLength: 8
62      0.00000102      fancom.exe      IOCTL_SERIAL_SET_CHAR           Serial0 SUCCESS EOF:1a ERR:0 BRK:0 EVT:1a XON:11 XOFF:13
63      0.00000474      fancom.exe      IOCTL_SERIAL_SET_HANDFLOW       Serial0 SUCCESS Shake:9 Replace:80 XonLimit:1024 XoffLimit:1024
64      0.00000345      fancom.exe      IOCTL_SERIAL_SET_DTR            Serial0 SUCCESS
65      0.00000081      fancom.exe      IOCTL_SERIAL_SET_TIMEOUTS       Serial0 SUCCESS RI:-1 RM:-1 RC:30000 WM:0 WC:30000
66      0.00000192      fancom.exe      IOCTL_SERIAL_SET_WAIT_MASK      Serial0 SUCCESS Mask: RXCHAR RXFLAG CTS DSR RLSD BRK ERR RING
67      30.00755135     fancom.exe      IOCTL_SERIAL_WAIT_ON_MASK       Serial0 SUCCESS
68      0.00000353      fancom.exe      IOCTL_SERIAL_SET_QUEUE_SIZE     Serial0 SUCCESS InSize: 8192 OutSize: 100
69      29.99287343     fancom.exe      IRP_MJ_WRITE                    Serial0 TIMEOUT Length 1: .
70      0.00000349      fancom.exe      IRP_MJ_FLUSH_BUFFERS            Serial0 SUCCESS
71      0.00000985      fancom.exe      IOCTL_SERIAL_SET_WAIT_MASK      Serial0 SUCCESS Mask:
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1 回答 1

0

PortMon 为 \n 输出句点。

于 2013-04-24T18:42:21.720 回答