Basic Serial Port Programming
Hello folks, Visual Basic.net is an easy to learn language from Microsoft for the windows platform.One of the cool features of Visual Basic.net is the ability to whip up good looking gui components with a few lines of code. In this tutorial we are going to use Visual Basic.net to program your PC's Serial Port and communicate with an embedded microcontroller like MSP430 or 8051. Visual Basic Serial Interface Program. The serial interface program works with Visual Basic 6.0 (VB6) on an IBM PC (or compatible) with a Pentium-class processor. A Pentium 90 or higher is recommended, running Windows 95 or better, with a serial interface. It uses the COM1 communications port at 9600 Baud. Windows Serial Port Programming 2) Using the Serial Ports in Visual C++ 3) Serial Communication in Windows; 1) You can use this with Windows (incl. MinGW) as well as Linux. Alternative you can only use the code as an example. 2) Step-by-step tutorial how to use serial ports on windows. 3) You can use this literally on MinGW. Using Visual Basic and the MSCOMM Control with ADR ( RS232 )Devices., the SerialPort component must be utilized to allow serial data transfer via a serial port. ( Chr(13) ) terminated ASCII strings to read two 12-bit analog input channels and control an 8-bit digital I/O port. The program can be modified to work with any ONTRAK or other. Reading/Writing data via COM Port in VB6. Ask Question 0. I am working with a laboratory machine (cobas 6000) to implement LIS using VB6. The machine has a COM port (9 pin). VB6 Serial port programming. How to read from two COM ports? Read from COM port in C#.
This topic describes how to use My.Computer.Ports to dial a modem in Visual Basic.
Typically, the modem is connected to one of the serial ports on the computer. For your application to communicate with the modem, it must send commands to the appropriate serial port.
To dial a modem
Determine which serial port the modem is connected to. This example assumes the modem is on COM1.
Use the
My.Computer.Ports.OpenSerialPortmethod to obtain a reference to the port. For more information, see OpenSerialPort.The
Usingblock allows the application to close the serial port even if it generates an exception. All code that manipulates the serial port should appear within this block, or within aTry..Catch..Finallyblock.Set the
DtrEnableproperty to indicate that the computer is ready to accept an incoming transmission from the modem.Send the dial command and the phone number to the modem through the serial port by means of the Write method.
Example
This code example is also available as an IntelliSense code snippet. In the code snippet picker, it is located in Connectivity and Networking. For more information, see Code Snippets.
Visual Basic Usb Port Programming
Compiling the Code
This example requires a reference to the System namespace.
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Robust Programming
This example assumes the modem is connected to COM1. We recommend that your code allow the user to select the desired serial port from a list of available ports. For more information, see How to: Show Available Serial Ports.
This example uses a Using block to make sure that the application closes the port even if it throws an exception. For more information, see Using Statement.
In this example, the application disconnects the serial port after it dials the modem. Realistically, you will want to transfer data to and from the modem. For more information, see How to: Receive Strings From Serial Ports.