Serial Port Source

The source of article and links to material and tool in the computer serial port(RS-232) interfaceing hardware programming relating in serial port content and networks, and control applications.

Plus!,How to Programming ,Troubleshooting,Connecting ,Project and Product also.

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Here is information sources overall of the basics of RS232, RS485, and similar communications. The best sources are the product vendors and chip manufacturers and devices to attend listed thus below.

• Beyond Logic Organization has show tutorials ,article and projects to present in serial port.

• PC Webopaedia Site. Here is definitions and links to RS-232 and other serial-port information for developer.

• PC hardware pages of Mr. Tomi Engdahl . Go to RS-232 and many source in serial-port information.

• Serial Communications in Win32 by MSDN. A article in used API calls for serial communications, with code in C and C++. From Microsoft Windows Developer Support.
• A Linux in serial port programming guide. Peter Baumann's article.

• HOWTO documents for Linux, Plus some Serial Port HOWTO.

• The Art and Science of RS485. By Bob Perrin. From Circuit Cellar Site

• RS232 Data Interface is a tutorial and articles from ARC Electronics site.

• Article of lvr.com about RS485 Circuits Design.
• Serial Communication via RS-232 Serial Port. Harsha Perla 's an article and information
  
• Prefer and used Serial port Data Standards.
• Introduction to RS-422 & RS485. From Hardware Server.

Connecting Two Computer

• Loop-back.com the one has been many sources for the pinout for the null-modem cable to connect two computer's serial ports or COM port.

Applications and Programs

• A Stamp UART. The best article shows how to use Maxim's MAX3110E UART to add a buffered asynchronous serial port to a Basic Stamp project.

• Here is Present motor-control and relay projects.

The sources below for PCB(printed-circuit boards) that convert between RS-232(TTL) and RS485 or like interfaces, serial port expansion cards for computer's, software drivers,cables and all serial port products.

Plus of these companies are the best sources for applications information.

Companies that specialize in serial communications & access

Please see the Communications Software thus section below.

• Byte Runner Technologies Website has show serial-port expansion cards, both PCI abd ISA-based.
• CER International Website has show the COM-Watch 2000, a serial data communication analyzer for RS-232, RS485, and more serial communication.
• B & B Electronics website. All products and an extensive RS-422/485 application note.
• Cimetrics Technology Website has show RS485 and BACnet hardware and software for Computer and embedded systems.
• Connect Tech Inc. Website has show a large prefer of RS-232 and RS485 converters and cards for various interfaces and applications to support your project.

• Acces I/O Products has show RS-232 and RS485 cards and converters.

• The Mule KeyWedge Interface from Altek Instruments converts RS-232 input to keyboard input.

• Antona Corporation has show RS-232/RS-422 converters, including one with a video vertical sync interrupt.

• Cyclades' Cyclom-Y is a series of multi-port serial cards.

• DataBoy is an RS-232 traffic monitor that plugs into a standard Game Boy Color or Game Boy Advance console. From Micro Contraptions, Inc.

• HVW Technologies has show an RS232/RS485 converter that requires
  no software control of the transmit-enable line and RS-232/TTL converters that can plug into the edge of a solderless breadboard.

• SAN People has show Ethernet-to-RS-232 and -RS485 converters.

• Netburner has show a development kit for serial-to-Ethernet applications.

• Parallax, Inc. Creators of the Basic Stamp.

• Sealevel Systems has show boards and drivers for I/O.

• Traversix has show a Connectivity System for remote access to your serial-port devices.

Communications Software

This source is communications & access tools can simplify serial-port programming on computer for developper.

Regrading the Visual Basic, use the MSComm6 control included with the Professional and Enterprise editions. Visual Basic's Learning Edition doesn't include MSComm6. But you can use the freeware XMComm ActiveX control, which wraps the MSComm32.ocx. From Richard Grier's Hard & Software.

• SerialPort (RS232 Serial and COM Port) in C# Dot NET. Show used the SerialPort class.
• Microsoft Dot Net Framework 2.0, scheduled for release in November 2005, will include a SerialPort class. Attend a Beta version of the Dot Net Framework 2.0.

• Serial Basic is a programming language designed for RS232 communications & access. From Data Outfitters.

• HOW TO : Access Serial Ports and Parallel Ports by used Microsoft Visual Basic Dot Net. How to use ReadFile and WriteFile to access serial ports. Knowledge Base article #823179 from Microsoft.

• Serial Communication used VB Dot Net. Example code from Corrado Cavalli.

• GotDotNet User Sample: C#-based Serial Port Control component and CSTerm terminal application.

• Programming in Visual Basic Dot Net Code Sample: used the Comm Port. By Microsoft.

• Advanced Serial Port Monitor and Advanced Serial Data Logger. From AGG Software.

• Serial Port classes targeted for Microsoft's Dot Net Compact Framework. By OpenNETCF.org.

• Easy-I/O. The ActiveX control for very basic serial I/O for OS Windows 95/NT.

• Eltima Software is a virtual serial port driver, serial port monitor, and serial port splitter.

• Greenleaf CommX has been ActiveX comm ports, the ViewComm Async protocol analzyer.

• PowerBasic.the DOS Basic compiler that enables accessing four COM ports .

• Nilsen Consulting Website has been a serial driver for Windows NT with support for 9-bit communications & access.

• Remote Control Programming Project

• Visual Basic Dot Net Programming in RS232

• RemoteComm and LocalComm An ActiveX components allow remote access to a serial port on one computer (used Winsock over a network connection) from another computer (or Pocket PC/Windows CE device).

• This is RS-422 OCX for Sony VCR.

• Sax Comm Objects is an ActiveX control and COM object for serial communications & access.

• SerialTools supports accessing physical and virtual serial ports in Dot Net Desktop Framework and Compact Framework applications and ActiveX.

• Serial Player enables recording and playback of data from serial ports.

• Visual Basic in RS232SerialPort is a class for use with Visual Studio 2003 and the Compact Framework for Pocket PCs and embedded Windows CE. From Richard Grier's Hard & Software.

Virtual Serial Port Drivers

Please See below communications & access Software for additional sources.

• The Virtual Serial Port Driver enables applications to use COM-port functions to communicate with your custom hardware. From Device Drivers International.

• Various Virtual Serial Port products for Windows and Windows CE. From MKS Software.

• Fabula Tech has been a Virtual Serial Port Kit (VSPK) and Network Serial Port Kit for Windows.

• AlarIT Virtual Serial Driver. Emulates serial devices under Windows 2000 and XP. From AlarIT.

Terminal Emulators

This is basic modem or direct RS232 communications & access. Use one of these in place of Windows' Hyperterminal (in Accessories).

• RealTerm is a terminal emulator with a focus on debugging capabilities. Freeware.

• Com Port, By TGL Microsystems.This is Shareware.

• MTTTY by Netburner Freeware.

• Tera Term. Freeware.

Protocols

• DDCMP (Digital Data Communications Message Protocol) ensures reliable communications & access over full and half-duplex links, used synchronous or asynchronous transmissions, in links of two or more devices. From Digital Equipment Corp.

• S.N.A.P. protocol is defines a simple, general-purpose message format that is useful for monitoring and control networks of all types. Freeware .

Wireless

Here is Information on various protocols for serial communications & access without wires thus below.

Infrared (IR)

• The IrDA organization is the originator of SIR (Serial IR, Speed 115 kbps), FIR (Fast IR,Speed 4 Mbps).

• IrCOMM2k is a free, open-source Virtual Infrared COM Port for Windows 2000/XP

• A primer on Standard Consumer IR, used in remote controls and other consumer devices. By Standard Microsystems Corp.

Radio (RF)

• The Bluetooth organization has been a site present with information on this new technology spec for small form-factor, low-cost, short-range radio links between mobile computer, mobile
  phones and other portable devices. Digianswer also has been Bluetooth information. Data Sheets and Application Notes

  Here Data sheets are the essential source of information on how to use RS-232 and RS485 interface chips.The Chip manufacturers are also an best source for applications notes with example circuits and tips on used the components.

  • National Semiconductor. All interface chips and excellent application notes on a variety of topics. Use the search term "RS485". Also a source for the data sheet for the PC's 16550 UART.
  • Texas Instruments has been interface chips. Also search on UART.
  • Linear Technology is good source for RS-232/485 chips.
  • Intersil website has been RS-232 chips and the data sheet for the 6402 UART,simple UART that's useful for basic monitoring and control applications.
  • Maxim Integrated Products has show RS-232 and RS485 chips of every variety. Also the 16-pin MAX3100 UART with SPI interface.
  Interface Standards

  The TIA (Telecommunications Industry Association) develops and publishes the RS-232, RS485, and similar standards. The standards documents are available from Global Engineering Documents. These are some of the document numbers:

  
  RS-232 is document TIA/EIA-232, revision F.
  RS-422 is document TIA/EIA-422, revision B.
  RS-423 is document TIA/EIA-423, revision F.
  RS485 is document TIA/EIA-485.