[Software] 開發 Serial Port 不能或缺的工具 Virtual Serial Port & Serial Port Monitor

2013-04-16

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Serial Port
2016-07-11

Virtual Serial Port 是 Eltima 旗下的一個產品之一：

http://www.eltima.com/products/vspdxp/

特性如下：

Full features list:

Any number of virtual serial ports pairs can be created
Virtual serial ports are absolutely the same copies of real ones - applications won't see the difference between real and virtual serial ports
Virtual serial ports can be controlled directly from your own application via Dynamic Link Library supplied with VSPD (for OEM License owners)
Link between virtual serial ports is much faster than real null-modem cable connection and solely depends on your processor speed (average transfer speed is about 5.5 Mbytes/sec)
Real serial ports are not occupied - you can even have no real ports in system at all
Strict baudrate emulation (for Windows NT4/2000/XP/2003/Server 2008/Vista/Windows 7)
All signal lines are available: DTR/DSR/CTS/RTS/DCD/RI
Full support of HandFlow control (Hardware and Xon/Xoff)
Virtual serial line connection break emulation (for Windows NT4/2000/XP/2003/Vista/Server 2008/Windows 7)
Different virtual null-modem schemes are available: standard/loopback/custom (for Windows NT4/2000/XP/2003/Vista/Server 2008/Windows 7)
Virtual serial port may have any name you like, even the same name as real port has
Ports are automatically re-created on system reboot (prior to user login)
Possibility to change names of virtual serial ports, created by VSPD, shown in Device Manager
Restriction of access to created virtual ports for various applications (for Windows 2000/XP/2003/Vista/Server 2008/Windows 7)
Virtual Serial Port Driver and all of its internal drivers are digitally signed
Complete information about current virtual serial port state, sent/received data, etc (for Windows NT4/2000/XP/2003/Vista/Server 2008/Windows 7)
Windows kernel driver technology support (WDM, WMI, Power Management, PnP, etc)
Printers can be assigned to any virtual serial port (available after Windows reboot)
Hyper-threading and VMware friendly
No reboot is required after VSPD installation, creation and reconfiguration of virtual serial ports

它能做什麼?

我主要都是用它來模擬兩台電腦 COM Port 之間的通訊。

在以往若是要開發兩台電腦之間的 COM Port 通訊，我們可能需要兩條實體Serial COM Port，然後對特殊角位跳線，用來模擬通訊以便開發相關軟體，自從我多年前知道有這東西，就沒跳過線了，今天特地來分享這個東西給其他人知道。

如何模擬COM Port之間的通訊?

當我們打開軟體後可以看到我們電腦的實體Serial COM Port

選擇First Port & Second Port

接下來我們就可以看到我們在電腦中已經有虛擬的 COM Port 了，就算這個軟體關掉也仍能保持虛擬 COM Port 的存在

可以觀察這個Port是被哪一隻程式所佔用，發送以及接收的 Bytes 狀況，由此可能得知自行開發的軟體有沒有正常在工作。

手動模擬斷線/復線

設定腳位跳線，雖然看起來是如此，但我改了設定也看不出什麼變化。

這軟體基本上就只是模擬 COM Port 而已，無法模擬實際設備的接收的實際反應狀況，我們還是得為每一個不同的設備進行參數上的處理或是流程上的處理。

Serial Port Monitor 也是 Eltima 旗下的產品 http://www.eltima.com/products/serial-port-monitor/

特性如下：

Full features list:

Start/stop monitoring the serial port that is already opened by another application (available in Professional Edition only)
Serial Port Monitor is completely compatible with Windows 7 /Vista (both x32 and x 64)
Serial Port Monitor and all of its internal drivers are digitally signed
Any number of serial ports can be monitored simultaneously
Supports all COM-port types: standard on-board ports, extension board ports, software-based virtual COM ports, bluetooth serial ports, USB to SERIAL cradles, etc
Data transmission monitoring and logging
Advanced send dialog: easily send various types of data, apply aliases for faster typing and automation, send files and loop functions and commands, change serial port parameters on-the-fly (available in Professional Edition only)
Real-time data capturing
Various monitoring visualizers: table view, line view, dump view, terminal view
Incoming and outgoing data streams logging
Multi-colored commands display in table view
Any software/hardware that works with a serial port can be monitored
Intercept and record all serial input/output control codes (IOCTLs), tracking their full details and parameters
Customizable monitoring session logging (several timestamp formats, different scale of notation, customizable logging string length etc.)
Convenient and flexible monitoring session's management: saving and loading all monitored data, exporting and redirecting to file functions
Monitoring session exporting (HTML, ASCII text, UNICODE text, Exсel CSV) and automatic redirection to file (Serial Port Monitor will automatically append all monitored data to a file in real-time)
Supports copying all recorded data to clipboard
Supports adding data automatically before and after packet to be transmitted
Full duplex mode supported
Control lines status visualized
Unique stream filtering tools with presets
All baudrates supported
Flexible configuration: stopbits, flow control, parity control, data bits, highlighting, etc.
User-friendly flexible interface: the software is designed to provide easy access to serial ports, no programming skills are required