get data from com port in vb.net

Question

1.00/5 (2 votes)

See more:

hello
i have scale that i want to connect it to com port in computer
i want to get 5 byte information of it and convert it to long in vb.net
please help me

Posted 29-May-13 4:10am

mtorabi2005

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Dave Kreskowiak · Answer 1 · 2013-05-29T04:17:00

Solution 1

Consult with the SDK and/or documentation for the scale. Since we know nothing about the scale itself it's pretty much impossible to tell you how to do that.

Now, if you had a more specific problem to ask about, maybe we could help with that.

Posted 29-May-13 4:17am

Dave Kreskowiak

_Vitor Garcia_ · Answer 2 · 2013-05-29T04:19:00

Hi Mtorabi,

Take a look here.

VB

Private Sub SerialPort1_DataReceived(ByVal sender As Object, ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) Handles SerialPort1.DataReceived
ReceivedText(SerialPort1.ReadExisting()) 'Automatically called every time a data is received at the serialPort
End Sub
Private Sub ReceivedText(ByVal [text] As String)
'compares the ID of the creating Thread to the ID of the calling Thread
If Me.rtbReceived.InvokeRequired Then
Dim x As New SetTextCallback(AddressOf ReceivedText)
Me.Invoke(x, New Object() {(text)})
Else
Me.rtbReceived.Text &= [text]
End If
End Sub