Serial Port Visual Basic 2008 Express
Welcome to the GSM-Forum forums.You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features.Only registered members may post questions, contact other members or search our database of over 8 million posts.Registration is fast, simple and absolutely free so please -!If you have any problems with the registration process or your account login, please contact. Serial Port in VB.NET 2008User NameRemember Me?Password. Hi,Since I discovered the free download of Visual Studio.Net Express 2008 over at, I have had a small play bringing some of my VB 6 code over to the new standards.Attached is a small sample I just wrote to communicate with the Serial Port.The s/w enumerates all available ports automatically and data entred into the upper text box is transmitted to the port on clicking the Tx button. The data sent is terminated by vbCr character (chr(13)) but this can be modified in code.Pauses are used to wait for any recieved data to be filled in the buffer, and the Rx data is then added to the RichTextBox.
Again these can be modified or replaced by Do.While loops depending on what device you communicate with.This is not the best way of working with VB.NET, I am reading a lot about threading at the moment. However this very simple code works in my application 100%, and hopefully it can give others a small head start.Good luck! Sir would u plz tell how to read nokia firmware detail with usb.coz i am sending FBUS command to phone command sent sucssesfully but didn't get answer from phone would u plz give some help how to communicate with phone with Visual Basic just read phone type and imei.Thanks a lotThe source code posted above is for sending AT commands only, you must modify it to send FBUS commands.AT command = string dataFBUS = hex dataYou can find examples how to send FBUS in visual basic by searching the forum, this can be converted to.NET quite easy. Hi siri've downloaded the attachmet and when i tried to open the program it gives me an error and didn't open.i wanna to interface Ericsson T290i with AT COmmand i want when the mobile recieve a message it converts it to binary code that microcontroller understand it to turn on/off devices.i want to know how could i read message from the program i downloaded coz i tried with hyper terminal it gives me error in the reding msg code. So plz i want u to help mesorry if i ask silly question i havn't worked with visual studio beforei hope u understand me.
Serial Communication with Visual Basic.NETSerial COM PortSerial COM Port CommunicationThis page describes serial COM port communication by means of Visual Basic.NET The page is updated August 5 th 2010. It is only available in English.Windows COM PortUnfortunately Microsoft has never paid much attention to the serial port.
Serial Port Visual Basic 2008 Express
In the Windows API it is just regardedas a file, and in the first version (1.1) of the.NET framework (managed code) there was no support for serialcommunication. Fortunately, a new namespace - System.IO.Ports - has been added in version 2.0, which has made things mucheasier although there are still some problems. For example, it is not possible to control the FIFO in the UART. It isalso not possible to tell when the transmitter serial register is empty, so it is almost impossible to control the modemcontrol signals and send a break condition, but worst of all, Microsoft has put an 8 bit wide buffer on top of the 11-bitreceiver FIFO and therefore destroyed the possibility for a precise Break, 9th bit and error detection. Besides, many ofthe examples in the help files are directly misleading and unnecessary complicated.
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Vba Serial Port Communication Example
For example, it is recommended to useMy.Computer.Ports.OpenSerialPort('COMx') to open a serial port, but if it is done that way, it is not possible to setmany of the properties of the port like for example the length of the receive buffer and it is not possible to tell when a portis open (IsOpen).In many developer forums there has been a lot of questions concerning serial port communication, but unless you arelucky enough to get in touch with the one, who has designed the serial port, it is usually very hard to get precise andhelpful answers. For example, when we wanted to use very high speed communication (up to 921.6 Kbit/s), we only got theanswer that it couldn't be done or we needed to write our own drivers!However, it is in fact possible to use System.IO.Ports even up to 921.6 Kbit/s if a UART with a 128 byte FIFO isused (16C850 or 16C950). As a service to others with the same problems as we have been through we have chosen to publisha small program, which is able to communicate through the serial port. The sample program is written in Visual Basic.NET (in the following just VB), because this language is as close as you get to our own suggestion for a simple andefficient programming language (see: ). In.NET there is no longer anyperformance difference between VB, C and C#.WARNING! This description is based on VS 2005 and.NET 2.0.