Question

I’m having difficulty sending an integer to a serial port… I’m trying stuff like this, which run fine but I’m not picking anything up at the port.

Private Sub fireToPort()
    Dim sPort As New SerialPort("COM1", 56000, Parity.None, 8, StopBits.One)
    sPort.Open()
    sPort.Write(New Byte() {Hex(1), 255}, 0, 0)
    sPort.Close()
End Sub

Any advice?

Answer 1

Shouldn’t the last argument to sPort.Write be the number of bytes you want to send?

e.g.

  sPort.Write(New Byte() {Hex(1), 255}, 0, 2)