如何从 VB.NET 向串口发送和接收十六进制数据

Question

Using vb.NET, i need to manage a device using serial port. I use for this, SerialPortStream from Nuget. Here is the GitHub url. https://github.com/jcurl/serialportstream

I have info from the device provider and the message format used. Shown in this image: Image with message format used

I open correctly port and correctly connect to device and the event for receive data from the serial port is also ok and is fired when i send something.

For receive i use this

Private Sub s_DataReceived(sender As Object, e As SerialDataReceivedEventArgs) Handles s.DataReceived
        Console.Beep()
        Console.WriteLine("<---- " & s.BytesToRead)
 End Sub

I know what messages i need to send and what messages i expect to receive looking logs i have from other apps running same device.

But i don't know how to format and send the messages from my app and i don't know how to manage the s_DataReceived event to get the responses from the device.

Any help will be appreciated. Thanks in advance

Answer 1

The way for send is:

 Dim b() As Byte = New Byte() {&H01, &H02, &H03, &H04, &H05} (and so on... once data is completed.)
 s.Write(b, 0, b.Length)

for receive is:

dataArrived = s.ReadExisting