串口通信 hub4com

================================ HUB for communications (hub4com) ================================ INTRODUCTION ============ The HUB for communications (hub4com) is a Windows application and is a part of the com0com project. It allows to receive data and signals from one port, modify and send it to a number of ports and vice versa. In conjunction with the com0com driver the hub4com allows to - handle data and signals from a single real serial device by a number of different applications. For example, several applications can share data from one GPS device; - use real serial ports of remote computer like if they exist on the local computer. The homepage for com0com project is http://com0com.sourceforge.net/. TESTING ======= 1. With the com0com driver create three virtual COM port pairs with port names CNCA0, CNCB0, CNCA1, CNCB1, CNCA2 and CNCB2 (see com0com's ReadMe.txt file for details). 2. Start the hub4com.exe on CNCB0, CNCB1 and CNCB2 ports: hub4com --route=All:All \\.\CNCB0 \\.\CNCB1 \\.\CNCB2 3. Start the HyperTerminal on CNCA0 port. 4. Start the HyperTerminal on CNCA1 port. 5. Start the HyperTerminal on CNCA2 port. 6. The data typed to any HyperTerminal window should be printed on the others HyperTerminal windows. EXAMPLES OF USAGE ================= GPS hub ------- You have a GPS device that connected to your computer via a phisical COM1 port and you'd like to handle its data by two GPS applications. You can do it this way: 1. With the com0com's Setup Command Prompt create COM5<->CNCB0 and COM6<->CNCB1 virtual COM port pairs (see com0com's ReadMe.txt for more info). For example: command> install 0 PortName=COM5 - command> install 1 PortName=COM6 - 2. Start the hub4com.exe on COM1, CNCB0 and CNCB1 ports: hub4com \\.\COM1 \\.\CNCB0 \\.\CNCB1 It will send data received from COM1 port to CNCB0 and CNCB1 ports and it will send data received from CNCB0 port to COM1 port. 3. Start the GPS applications on COM5 and COM6 ports. COM port to telnet redirector ----------------------------- You have old TERM95.EXE application from the Norton Commander 5.0 for MS-DOS and you'd like to use it to communicate with your.telnet.server telnet server. You can do so this way: 1. With the com0com's Setup Command Prompt create COM2<->CNCB0 virtual COM port pair (see com0com's ReadMe.txt for more info). For example: command> install 0 PortName=COM2 - 2. Start the com2tcp.bat on CNCB0 port. For example: com2tcp --telnet \\.\CNCB0 your.telnet.server telnet 3. Start the TERM95.EXE on COM2 port. BTW: com2tcp.bat is a wrapper to hub4com.exe. It works very similar to the "COM port to TCP redirector" (com2tcp). It supports all com2tcp's options. If you feel that com2tcp is what you need but can't find any required functionality (for example RFC 2217 support) then try use hub4com instead. RFC 2217 server (TCP to COM port redirector) -------------------------------------------- You have a server computer with phisical COM1 port and you'd like to share it through the network by the RFC 2217 "Telnet Com Port Control Option" protocol: 1. Start the com2tcp-rfc2217.bat on COM1 port. For example: com2tcp-rfc2217 COM1 7000 It will listen TCP/IP port 7000 for incaming connections and redirect them to COM1 port. RFC 2217 client (COM port to TCP redirector) -------------------------------------------- You have a server computer your.comport.server with phisical serial port shared through the network by the RFC 2217 protocol (see above example) and you'd like to use it on the client computer like a virtual serial port. 1. With the com0com's Setup Command Prompt create COM5<->CNCB0 virtual COM port pair (see com0com's ReadMe.txt for more info). For example: command> install 0 PortName=COM5,EmuBR=yes - 2. Start the com2tcp-rfc2217.bat on CNCB0 port. For example: com2tcp-rfc2217 \\.\CNCB0 your.comport.server 7000 It will redirect virtual serial port COM5 on the second computer to the phisical serial port on the first computer. CHAT server ----------- You'd like by using computer with address your.computer.addr to allow up to 5 users to chat by using ordinary telnet application. 1. Start the hub4com.exe on the computer with address your.computer.addr: hub4com --load=,,_END_ --create-filter=telnet --add-filters=All:telnet --route=All:All --use-driver=tcp *5555 *5555 *5555 *5555 *5555 _END_ 2. Now users can join to the chat by connecting to port 5555 of your computer. For example: telnet your.computer.addr 5555 CVS pserver proxy ----------------- You have a computer that has not access to the internet and you'd like to allow it to access to hub4com's CVS repository by using proxy computer with address your.computer.addr. 1. Start the hub4com.exe on the computer with address your.computer.addr: hub4com.exe --use-driver=tcp /2401 com0com.cvs.sourceforge.net:2401 2. On computer that has not access to the internet check out the hub4com souce code from the CVS repository: cvs -d:pserver:anonymous@your.computer.addr:/cvsroot/com0com login cvs -z3 -d:pserver:anonymous@your.computer.addr:/cvsroot/com0com co -P hub4com CVS ssh to https proxy ---------------------- You have a computer that is behind firewall which block traffic on the SSH ports used to access SourceForge CVS servers for developers. SourceForge provides SSH access to CVS servers using port 443, to eliminate this problem but CVSNT does not allow specifying the port for using the SSH. To eliminate this problem (for <your-progect>, <developername> and <modulename>): 1. Start the hub4com.exe: hub4com.exe --use-driver=tcp <your-progect>.cvs.sourceforge.net:443 --interface=localhost /22 2. Check out the souce code from the CVS repository: cvs -z3 -d:ssh:<developername>@localhost:/cvsroot/<your-progect> co -P <modulename> Multiplexing ------------ You have a client computer that has a serial port COM1 and a server computer that has four serial ports COM1, COM2, COM3 and COM4. Both computers linked each other by null-modem cable between their COM1 ports. There are not any other connections between the computers. You'd like to use COM2, COM3 and COM4 of the server computer like if they exist on the client computer: -------------------------------------- -------------------- | Client computer | | Server computer | | | | | | app1 -- COM2 (virtual) -- | null-modem | -- COM2 --- | \ | cable | / | | app2 -- COM3 (virtual) --->-- COM1 -------------- COM1 --<--- COM3 --- | / | | \ | | app3 -- COM4 (virtual) -- | | -- COM4 --- -------------------------------------- -------------------- |<--------multiplexed------->| |<-------------RFC 2217------------->| 1. With the com0com's Setup Command Prompt on client computer create COM2<->CNCB0, COM3<->CNCB1 and COM4<->CNCB2 virtual serial port pairs (see com0com's ReadMe.txt for more info). For example: command> install 0 PortName=COM2,EmuBR=yes - command> install 1 PortName=COM3,EmuBR=yes - command> install 2 PortName=COM4,EmuBR=yes - 2. Start the multiplexer.bat on the Server compu