Serial Port :: Ms Comm Getting Exception?
Nov 27, 2011I used microsoft com control 6.0 in the application for sending data to the led control
MSComm1.EOFEnable = True
MSComm1.SThreshold = 100
MSComm1.InputLen = 0
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Catching And Removing Escape Characters In A Serial Comm Port Program?
May 18, 2010I have recently developed a serial port communication program to access my hardware firewall and its connected to the device via a converter usb to rs232head plugged to a rs232 to an ethernet cable. this ethernet cable then plugs into the device console port.
my program functions similar to that of TeraTerm. an opensource hyperterminal program written in C++ but i decided to do one for vb.net
Alright to cut the story short, i have successfully coded out the program to accept incomming data from the device but however, i'm also receiving ansi escape sequence along with it and i have no idea how i could implement codes to remove these. i have spend 3 weeks trying to look for vt100 emulation codes written in vb.net but i found none so far. most are written in c++. here's an image to illustrate the problem which im facing.
The image below is a screenshot taken when the i ran both the programs together. The bottom is tera term 3.1 and the top is my vb project which i made using msdn's example and improved on the codes. basically tera term was able to interpret those escape sequence and display accordingly to that of the vt100 terminal display. I have spent time reading on regular expressions using the inbuilt function regex in visual basic and tried parsing some strings but its not working. i guess its far more complex than i thought.
VB 2003 - Handling Data - Transmitting Data From A Comm Device Via Serial Port
Nov 10, 2009I'm currently working on a project where I am transmitting data from a comm device via the serial port and resorting the raw data (in binary) to its respective ascii values. The problem I'm facing is determining the most efficient method to accomplish my goal. Essentially, I have 68 bytes coming in, the first and second bytes represent the page and packet number and the data itself ranges from 3 to 64, the remaining for my checksum.
What I am needing to do is, grab 50 consecutive bytes per variable in my array, and that is where I'm confused. I have easily pulled my 3-64 bytes and stored that data to a string. I just don't know the most efficient method to accomplish my goal. Should I write directly to file all my data, as there are like 8 pages, of 128 packet data. [Code] I can capture the the first 50 by using a for-loop easily, but what would be the preferred method to track what data chunk I've taken? The more I think about it, I think I may just want to write to file, all my data, and then just take them back to back in 50 byte chunks. Is that the most efficient method?
Reading Serial Port Read Data From Serial Port?
Aug 16, 2011i am a absolute beginner and i want to use vb to receive data from micro controller through serial port using rs232 standards, i found this code to receive the data serially, can any one tell me where should i paste this code, so that the data received will be displayed in message box.Private Sub DataReceived(ByVal sender As System.Object, ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) HandlesSerialPort1.DataReceived
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Serial Port Example Code - Connect To A Modem Thru The Serial Port
Oct 26, 2011The link below has code to connect to a modem thru the serial port but it is for an earlier version of VB. when I convert the code, it does not fully convert and has 4 errors that prevent building the project. can someone tell me what needs to be changed or added?
[URL]
Note: the error: not CLS-Compliant
Comm Port And HEX Data
Jan 27, 2010Basically I need to send the hex command FA through a COM port.
I have added the com port and set the baud etc and all seems to be working well there. I am just a little unsure how to send the correct hexadecimal command. For example,
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
SerialPort1.Open()
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Create A Logical Comm Port
Apr 29, 2011Is it possible to create a logical serical port in vb that another application can open and read/write to?
View 2 RepliesHooking The Comm Port (RS232)?
Nov 2, 2011I currently have software that sends out plain text(i.e. 'X') to comm 1 port and was wondering if there was any way to capture that plain text and also respond to that port on the same compute as the port without having anything plugged into the machine (i.e. 9 pin serial cable). I am trying to avoid buy any more hardware as this is an objective to acutally cut down on hardware.
View 1 RepliesProper Syntax For Comm Port Comunication
Dec 31, 2009Now I know whats going to happen, I will post a request for code syntax and one of the admins is going to say that I need to post the code I already have. The code I already have is irrelevant to what i wish to do. So, continuing on; I have a micro controller that i wish to send commands to it in HEX data type. Communication is via the serial port RS232. (well technically its through the USB to serial converter)Steps:
1) Sending a "001" tells the micro controller to await instructions as to what to set the duty cycle to
2) The data that follows i.e." 050, 010, 185 " will be added to 400 (by the micro controller) to come up with a duty cycle based on a 10 bit resolution of 0-1024. I am only going to be using the range of 401- ~500.
I can communicate with the micro controller via hyper terminal. Using the Alt + #keys method I can transmit data to the micro controller, and this is what i with to do with vb.net.[code]
Read / Write To A COMM Port From An ASP.NET Page?
Feb 22, 2007I have an older VB6 application which uses a scanner on the COMM port and does the following... (I have been tasked with re-writing it in ASP.NET (VB)...
OLD APPLICATION...
1. reads a Scanner and loads the data onto the PC
2. FTP's the data file to a SQL Server (where a small app picks it up and processes it)
3. Deletes the data from the scanner[code]...
[2005] UnauthorizedAccessException Accessing Comm Port
May 3, 2006I'm debugging a VB app where I'm using a comm port attached to a bluetooth radio paired to another bluetooth radio in order to communicate with a remote barcode scanner. The pair of bluetoooth devices basically work as a serial cable replacement. Sometimes it works fine, but after a while I get an UnauthorizedAccessException message which breaks the program (see attached jpeg).
I only get this when I use the radios and not when I use a direct cable. I wonder if it has something to do with other bluetooth devices nearby trying to communicate with mine. I've used the .NET Framework 2.0 Confuration tool to adjust the zone security to give full trust to MyComputer, so I don't think it has to do with security, but I'm really going beyond my area of expertise here. I don't know what's going on.
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Error Compiling Code For Working With A Comm Port
Apr 8, 2010I did a search for "How do I implement Serial COM Port communications? and found a response by Xiaoyun Li which was last posted on April 10, 2009. Xiaoyun's response included sample code. My intent has been to get a clean compile on the sample code, then test it, then expand the code into a real application. I am down to a single error message, which I can't figure out how to resolve: "Method 'Public Sub DoUpdate()' does not have a signature compatible with delegate 'Delegate Sub EventHandler(sender As Object, e As System.EventArgs)'." [code]I marked where the error occurs in the code with *** to the right of the error line.The code is attached to a simple form, Form1 which contains a single text box, TextBox1.It appears to me that the code needs a Delegate statement, but I can't figure out how to code it or where to put it.d.
View 3 RepliesGetting Scale Values From A Comm Port Into A Richtextbox Control?
Apr 13, 2012I am getting scale values from a comm port into a richtextbox control, now as long as the connections and the scale is working great scale readings continuously flow into the control all the time, however when the connections or the scale is turned of the label that displays the weight will give a message saying error.
After 5 seconds I want to be able to give the operator the choice to take scale readings manually. This is my code so far.
Private Sub tmScaleTimer_Tick(sender As System.Object, e As System.EventArgs) Handles tmScaleTimer.Tick
If rtbDisplay.Text.Length = i Then
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how do I restart the timer if the interval has elapsed
Use COMM Port 2 To Get Information From A Device. .NET Doesn't Support It Though
Feb 9, 2010I am writing a VB.NET app that has a piece which needs to send a small command to comm port 2 and get the return result. The problem is .NET doesnt have any support for serial communication seems like.
I just need to send the command "headtype" and get the result.
Unable To Close Serial Port After USB / Serial Converter Disconnected
Mar 28, 2006I have a stand alone VB.Net 2005 application that uses a serial port that generally stays open while the application runs on a Windows XP system. In trying to bullet-proof the UI, I ran into a problem when the USB to Serial Converter normally used to provide the serial port is disconnected while the serial port is open. In trying to handle the resulting error when accessing the port, I find I cannot close the port.
When trying to do so, the error message says something like "unable to close the port. You may not have sufficient permissions." Reconnecting the USB/Serial Converter does not reactivate the port.
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Read The Data From Barcode Weight Scales By Serial Port And TcpIp Port?
Nov 27, 2010I'm mohammed from Oman ,I'm visual studio.net programmer How I can Read the Data From Barcode Weight scales By Serial port and TcpIp port
View 7 RepliesGet FullName From Available Serial Port (Com Port) From Device Manager In Windows Form With .net?
Jul 25, 2011I have a Windows form.in windows form have a combo box that give me a list of available port serial with it code (Dim ports As String() =SerialPort.GetPortNames())for example( Com1,Com8,Com15,...).but I want to give me fullname of serial port in device manager for example in dvice manager is these (Comunication Port(COM1) - Printer Port(LPT1) And USB Serial Port(COM8)).how to Get it?
View 2 RepliesThe Given Port Name Does Not Start With COM/com Or Does Not Resolve To A Valid Serial Port?
Aug 2, 2011If I uninstall the COM1 and reboot, it works. If I shut down (power off) and restart, I get the message below. If I uninstall then click on Scan for Hardware Changes,The given port name does not start with COM/com or does not resolve to a valid serial port. Parameter name:portName
View 8 RepliesComm Port Read Hangs When Attempting To Read Data?
Apr 18, 2010I;m attempting to write code to read several NMEA ports and format the data for archive. When I execute the following code:
Using Commportno As IO.Ports.SerialPort = _
My.Computer.Ports.OpenSerialPort(portName:=port)
Dim Incoming As String = Commportno.ReadLine()
Communications :: Serial Port - Run Program, "Access To The Port 'COM1' Is Denied"?
Oct 15, 2008Im having problem with the Serial Port. When i run my program, "Access to the port 'COM1' is denied". What does that mean? Im not sure whats happening because theres no error in my code. Someone suggest me to use 'COM2'. Which is also the same result. I have a microcontroller, programmed and run it. And i need to capture the data onto my vb, which is on a multiline textbox. How to i do that?Just to double check my code?
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Serial Port Use In A DLL?
Jun 3, 2012I am trying to buld a DLL in VB.NET 2010 that will be use to control a vending machine.Whin a call into the DLL to a function to open and setup the comport the first time its opens it just fine, but if a call into the DLL again it does not know that the port is open even if it is still open. I can check with another program and is shows the port is open and if I try to call into the DLL again to open the port I get an error that the port is already open. Any idea how to set this up so it will work
View 7 Replies.net - Serial Port Communication?
Dec 30, 2009i'm creating a windows form to send/receive data to/from serial port.At first : i send the data as string to the serial port .Second: i tried to read the string again for test the successfull transmission , but i recieved empty string
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Accessing The Serial Port?
Oct 21, 2011I can find documentation (preferably with code samples) that will guide me through all the steps to activate and read from a serial port?
View 6 RepliesBreakState Serial Port In CE6.0?
Oct 31, 2010For my application a need to set a breakstate on/off of 25ms.In Xp this runs fine when I set breakstate=true and wait for 25ms and then breakstate= false and wait 25ms.In CE6.0 when I set breakstate = true, it only throws a puls.It is even not possible to keep breakstate on.
how to solve this or is there an alternative to simulate a breakstate?
Communicate To Serial Port?
Jan 15, 2011can we communicate to Serial port COM1 through Microsoft Robotic Studio?We are developing wireless robot which will take data from serial por
View 14 RepliesCommunications :: Like A Serial Port
Mar 8, 2010For many years, I have sent data between 2 computers using serial ports."Here is the data", "Thank you for that data!" type stuff.Where do I get more information for doing the same thing with 2 computers that are networked together? Assume a local ethernet connection.I have experimented with serial-ethernet modems and that works well but I don't want any more hardware.Is there a good thread here I should read?I want 2 VB programs running and I want to exchange data periodically.
View 2 RepliesControlling The Serial Port?
Apr 23, 2006I know things have changed in VB2005.net and i have Express and i want to controll the serial port. I have a program from VB6 that i understand and i tried to convert it but i get alot of errors and i have know idead what they mean. As you can tell i haven't been programming very long.
If someone can point me in the right direction for programming the serial port in VB2005 .net i would appreciate it or tell me what differences there may be.
Detecting A Serial COM Port?
Nov 9, 2009I am developing a UI for an embedded device that I have designed and built. The device uses an FT232 chip which, when connected via USB is automatically assigned one of the COM ports. I was wondering if there is a way to set up a loop which would automatically detect which COM port the device has been assigned. I could then add some handshaking to verify that the port is correct.
View 4 RepliesGet The Serial Port Available In The System?
Feb 16, 2009I have a little code for get the serial port available in the system.
For Each pn As String In IO.Ports.SerialPort.GetPortNames
Debug.WriteLine("NAME : " + pn.ToString)
Next
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So, The PORT1 and PORT5 its ok (because this are real serial port, with a real RS232 interface), but PORT4, I don't know.
How I can do for get only true serial ports ?
Getting Data From Serial Port
Jan 30, 2011I am facing problem reading data from Serial port. Actually I am connecting with the hardware device called Crimp Force Analyzer. It gives the data on hyperterminal and I have to read that data from my <acronym title="Visual Basic">vb</acronym>.net program. The data is somewhat like this:
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