System.IO.Ports.SerialPort - 可以配置 IOCTL_SERIAL_SET_WAIT_MASK 吗？
我一直在尝试通过编写一个小型 Windows 窗体应用程序来收集调用者显示数据来了解 .Net (3.5) 如何通过 System.IO.Ports.SerialPorts 类与串行端口交互。来自旧的外部调制解调器。
我测试过调制解调器支持来电显示； 使用 Putty 或超级终端，我可以配置调制解调器来收集呼叫者显示数据（使用命令 AT#CID=1，我发现该命令此处），当电话铃声响起时，就会显示数据。 在终端窗口中，它看起来像这样：
RING
DATE = 0308
TIME = 2045
NMBR = 01234567890
RING
我的 C# 应用程序似乎已成功配置调制解调器并显示 RING 电话铃声响起时发送消息； 但是，它从不显示来电显示数据。
为了理解其中的原因，我使用 Sysinternals
主要区别在于连接配置； 我的 C# 应用程序包含以下行，而 Putty 和超级终端则没有；
0.00000307 callerID.exe IOCTL_SERIAL_SET_WAIT_MASK Serial0 SUCCESS Mask: RXCHAR RXFLAG CTS DSR RLSD BRK ERR RING
据我了解，IOCTL_SERIAL_SET_WAIT_MASK是要过滤的消息类型的包含列表。
那么，三个问题：
来电显示信息是否可能被 IOCTL_SERIAL_SET_WAIT_MASK 抑制？
如果是这样，我该如何配置它以显示来电显示信息？ 它似乎无法从类属性访问。
如果我无法配置它，我唯一的选择是解决这个问题，将我自己的包装器写入控制串行端口的较低级别系统功能吗？
我对串行端口通信的理解非常基础，所以我希望我的诊断还很遥远。 非常感谢任何指导。
I've been trying to learn a bit about how .Net (3.5) interacts with the Serial port through the System.IO.Ports.SerialPorts class by writing a small Windows Forms application to gather caller display data from an old external modem.
I've tested that the modem supports caller display; using Putty or Hyperterminal I can configure the modem to collect caller display data (using the command AT#CID=1, which I found here), and when the phone rings, the data is displayed. In the terminal window, it looks like this:
RING
DATE = 0308
TIME = 2045
NMBR = 01234567890
RING
My C# application appears to successfully configure the modem and displays a RING
message when the phone rings; however, it never displays the caller ID data.
In an effort to understand why this is, I compared the actions taken by the different clients using Sysinternals Portmon.
The primary difference appears in the connection configuration; my C# application includes the following line, which Putty and Hyperterminal do not;
0.00000307 callerID.exe IOCTL_SERIAL_SET_WAIT_MASK Serial0 SUCCESS Mask: RXCHAR RXFLAG CTS DSR RLSD BRK ERR RING
As I understand it, IOCTL_SERIAL_SET_WAIT_MASK is an inclusive list of message types to filter for.
So, three questions:
Is it possible that the caller ID information is being suppressed by IOCTL_SERIAL_SET_WAIT_MASK?
If so, how can I configure it to show the caller ID info? It doesn't appear to be accessible from the class properties.
If I can't configure it, is my only option to get around this to write my own wrapper to the lower-level system functions controlling the serial port?
My understanding of serial port communications is very basic, so I expect I'm way off in my diagnosis. Any guidance gratefully received.
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我的诊断结果还差得很远。
看来
WriteLine方法不会终止它使用调制解调器所期望的行终止符发送的命令。我所需要做的就是在我发送的命令中添加一个回车符，并使用
Write方法发送它们。为浪费任何人的时间而道歉。
I was way off with my diagnosis.
It seems that the
WriteLinemethod doesn't terminate the commands it sends with the line terminator my modem is expecting.All I needed to do was add a carriage return to the commands I am sending, and send them using the
Writemethod.Apologies for wasting anybody's time.
我在 MSDN 上找到了这个，它看起来像是一个很好的示例，说明了如何通过系统 dll 上的 P/Invoke 访问串行端口。
我仍然想知道是否可以解决 .Net 类的问题。
I found this on MSDN which looks like a decent example of how to access the serial port via P/Invoke on the system dll's.
I'd still like to know if I can get around my issues with the .Net class.