Receiving Binary Data From Serial

[Abdurrahman YAMAN]

Hi,

I am trying to develop an 6 channel oscilloscope using vb.net and PIC microcontroller. I had solved receiving "string" data thtough serial but for improving sample rate i have to take data as binary.

So, i am receiving data using microC serial monitor like that,

0b01000001 0b11111110 0b00000011 0b11111110 0b00000011 0b11111110 0b00000011 0b11111110 0b00000011 0b11111110 0b00000011 0b11111110 0b00000011

First byte is header which is letter "A" then i received low byte then high byte over ADCs of microcontroller there are 6 different ADC values.

My first problem is that when i tried to get values i can get output like this "A?". I have to revieve like above.

Last problem is i don't know how can i split bytes into 6 different pieces.

Here is my code;

:code:

Private Sub SerialPort1_DataReceived(sender As System.Object, e As System.IO.Ports.SerialDataReceivedEventArgs) Handles SerialPort1.DataReceived
ReceivedText(SerialPort1.ReadExisting())
End Sub

Private Sub ReceivedText(ByVal [text] As String)

If Me.RichTextBox1.InvokeRequired Then
Dim x As New SetTextCallback(AddressOf ReceivedText)
Me.Invoke(x, New Object() {(text)})
Else
Me.RichTextBox1.Text &= ([text])
End If

End Sub

:code:

When i use string method. Ican split values according to their header which is "A,B,C,D,E,F". But this type of communication too slow for me. I have to improve my sample rate.


Thanks a lot.

Abdurrahman

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