I have a problem with something.I have a Arduino board I wan't to communicate with by serialport.
In "Form1", I'll retrieve values from the Arduino board, and I want it to calculate and display data in TextBoxes.How can I do this?[code...]
can we communicate to Serial port COM1 through Microsoft Robotic Studio?We are developing wireless robot which will take data from serial por
View 14 RepliesI will be using .Net to communicate with a small unit that outputs data via a serial port. I have used an application that monitors the data between an application and this little box. What I see is functions such as IRP_MJ_CREATE, IRP_MJ_READ, etc. At first I thought I needed to build functions and I would send these via the serial port (a novice thought) now I see that the above functions are part of the Windows Driver Kit. So is it true that I call these functions in my code and then the underlying drivers communicate to the serial port and the approppriate data is seen at the serial port. So for .Net (VB) I need to find and use the appropriate functions and communicate to the serial port.
View 1 RepliesFor 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 RepliesI am trying to listen to the COM3 port and display the output in the TextBox. If I understood correctly I will have to implement this by using eventhandlers, delegates. I tried following these articles:
[URL]
And this is the code I came up with... Unfortunately it doesn't display anything. App just starts display "True" and no data is being displayed. I am monitoring Arduino platform which I know is sending data constantly.
Code:
Imports System.IO.Ports
Imports System.Text
Public Class ArduinoSerial
[code].....
I am really new into the vb.net. I am sure there are some horrible mistakes with this code but I am kind of stuck for the past 2 days on this one.
i am using serial communication to read from a plc.The plc will send a string :&H3A as a header byte then C(which is a variable that contains data)I want to read and mask out the header byte.I use the following code but cannot read anything.
Private Sub btnread_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnread.Click
Msg = SerialPort1.ReadExisting
count = Val(Mid(Msg, 1, 2))
Lblno.Text = count
[Code]...
Im 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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I am trying to transmit the integer value 360 to serial port. but at micro controller i am getting the 3 bytes (33 36 30) its ASCII Values.So is there any way to transmit the 360's hex value 168 using two bytes only like 01 68 only?
View 2 RepliesI am trying to recieve HEX data from a seriall device. Code is as below . but the required output is not correct. Some chracter code are not correct even in decimal. like for 80 i recieved 3F and for c0 also. for example i recived a string .
10 02 3F 00 10 03 3F 61
but in actual data should be
10 02 80 00 10 03 c0 61
Public Sub DataSeriallReceived(ByVal sender As Object, ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) Handles SerialPort.DataReceived
Dim buff As String
[Code].....
I'm trying to receive data from the serial port and display onto a text box in my gui in vb. I'm using xp pro sp2 and vb 2008 exp.What i've done so far:
- I'm able to send data successfully (tested) to the serial port
- I can dispaly what data is being sent (tested)
Steps taken:
- I have looked around on this forum for something similar to what I have but no similar posts are here
- Will look into MSDN help shortly
- Will also try some vb books I have lying around. But the problem is most of the vb books deal with sql server and database stuff and not really interfacing to hardware.
i have an application where i send data(a question in a "packet" of 8 digits) to an external controller via serial port, and then that controller sends me back some information(the answer, in a "packet" of 8 digits, not necesarily zeros and ones)I have develope a simply software that is getting the correct data form the controller, here it goes:[code]So now i can see how many times the code needs to enter the loop to get the "answer" from the module.Now i know that the code needs to do the loop from 5000 to 18000 times to get the answer each time!!!!, so that is why the software keeps getting freeze.I supose that that time is neccesary for the module to give the answer, so i think i can't get better respond times, but i would like the software not to get halt.
View 3 RepliesI'm writing an app with takes 3 readings off LCD displays via serial ports. The module which scans the serial ports is getting stuck in a loop for around 1.5 seconds. I need it to be much quicker than that. Is there a way I can setup a virtual serial port so I can run test it on my PC. Its very tedious and time consuming of making changes and visiting the machine its for.
View 1 RepliesI have a barcode scanner that beside scanning the barcode it also snaps an image. I wrote a simple application that searching all ports locating in which one the scanner is connected and opening the port.
I can easily read any barcode and the send command to the scanner to pass me the image taken on the port, but i have a problem re-constructing the image from the bytes i read.
Code:
sendCommand()
Dim img(SP.BytesToRead) As Byte
SP.Read(img, 0, img.Length)
[Code]....
I can get the image from the scanner in any format needed (jpg,bmp etc) so no need to provide a precise solution just a general idea.
Now I'm doing a VB project about pc communications to a intelligent instrument with 485 serial port. I want to use API but I'm not good at it.
View 2 RepliesDuring Serial communications, is the echoing back usually done by the serial port interface or is it done by the UART at the far end?
View 10 RepliesThere seems to be a lot of discussion around about handling exeptions when a USB serial port device gets unplugged. What I want to know is how can one re-attach to it once it is plugged back in. The problem is that if you unplug a USB serial port device the app doesn't know it has gone and remains convinced it is still open. I have to close the app completely before I can re-attach to the device. I need a way to force it to close/go away.
View 2 RepliesI have quite a bit of VB6 experience but now am trying to create my first VB.Net project. The project is very simple - it just needs to send 8-10 character strings from the PC serial port. The problem I'm seeing is that VB.Net is always sending out a 0x0A character after each 'WriteLine' call. Using VB6 it was necessary to manually send out any End Of Line characters. My application requires that no extra EOL characters be sent after the string.
View 2 Repliesi need to create an application where input are to be received by the barcode scanner.However, i am not suppose to use the textbox to do so. However i need to use the serial port to do so. Any one know how am i able to do that?
View 1 RepliesI have a VB.net app running on one computer, displaying text into 2 texboxes or labels.I need to see the two values in two sperate textboxes or labels from the two labels on another computer via a null modem serial adapter.
1st computer.
Code:
serialport1.writeline(label1.txt)
straight forward right?
2nd computer to read the data
Code:
Private Sub SerialPort1_DataReceived(ByVal sender As Object, ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) Handles SerialPort1.DataReceived
dim s as new string = serialport1.readline()
label1.text = s
This is what I was thinking;
Code:
serialport.writeline(label1.text & label2.text
This would send the two values over the serial port. How would I seperate the two values and display them in two different texboxes?cannot use them together)Am I on the right path at all? Or using the serialport.writeline method won't work at all....
Anyone else have an issue using read, It appears when I use read it gives me the correct buys but returns the wrong integer value So I use it and it fills the Array i make with &h10, &h6 but read reutnrs number of bytes returned to 1. if there a better way to go with Vb.net with RS232 I mean really my projet dosent have anything out of the Normal
Friend WithEvents CashValidator As System.IO.Ports.SerialPort = New System.IO.Ports.SerialPort("COM1", 9600, IO.Ports.Parity.Even, 8, IO.Ports.StopBits.One)
CashValidator.Read(MyResponce, MyResponceLen, 4)
I'm trying to write a bit of code to communicate with an RS232 coin mech.The problem i have is that the coin mech works fine when used with Putty or Hyperterm but i do not appear to be able to 'activate' the serial port with my code.[code...]
When i open the hypertem or putty session the coinmech's active light immediatly comes on and i am able to send and recieve data. When the port is opened with the code nothing happens.
I have a USB modem that can detect caller ID and can detect dialled digits when special AT commands activated, How to send and receive data. The sent data will be the AT command such as AT+VCID-1 to activate the caller ID, the received data will be caller ID information and the digits dialed. I'm new to prgramming and using Visual Basic 2008 Express.
View 8 RepliesTo send serial data from Arduino Mega 2560 to a VB.Net PGM, then the VB.NET pgm will read data then send to via FSUIPC (an Addin DLL) to ms flight simm 2004.OK that said here is the question: how can I write or phrase or construct the proper syntex needed to 1-limit the data sent,or in reading the data-limit the data read?I have enclosed the VB.NET code and the Arduino code. Please take a look. I am very new to both,but I try hard. all the code works but I get strange all most random data in VB. The FSUIPC end works OK, I can send to and receive from Ok.It's the VB pgm that gets the data wrong some of the time. say 8 out of 10 it is OK then button x will also turn on or off another check box then do what was aked. It seems that I am not clearing the receive buffer so I get a last chr sent before.I have tryed readline, readexisting,readbyte but I don't know how to phrase or construct any but the readline. I have tryed to flush the buffer in both codes but, well I am stuck. [code]
View 4 RepliesWe learned How to assemble an input/output control board that would connect to your serial port. We were able to use out statements (back in the old gwbasic) to send output signals to the parallel port to turn on/off different outputs. The board had connections where you could connect lights, relays, etc, and had connections where you could attach switches and sensors.
I have been looking for something simple that I can manipulate in my programs. I already have an ActiveHome X10 interface which includes an activex for receiving and sending x10 signals (home automation, turning lights on/off, etc.). I want something that I can straight out connect relays to, and sensors as well. I don't want something that connects to the serial port since that is already being used up, the parallel port would work fine, or even better usb.
i 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
[Code]...
The 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
I didn't make this code but can someone explain to me how to add more than one client to communicate to add to this code?e.g 3 people to talk or is it not possible?
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Can WCF be used communicate through the internet? All the examples I have found show it being used on a local network.
View 10 RepliesI would like to build inputs and outputs interface board (if you have schematics for the hardware or where I could purchase such thing) I need 9 inputs and 8 outputs, 24 volte DC for the inputs and I want to build a form in visual basic that utilizes the serial port so for example when I press Button1_Click it will make output number 1 goes high in the board and when input 9 goes high in the board label9 or Button3 will change color in the form.
So basically the IO interface and the form will only be used to energize relays and monitor these relays. I am not worrying at this moment about if this input is high make this output high but if this is possible in visual basic currently running Visual Studio 2008 Express.
I would like to know can we use a socket connection on vb to communicate with PC without using GSM modem and SIM card.for example, like sendin a simple text msg to the PC and it will reply back the result back to me the result.
View 1 Replies