Hi i am trying to write-read data from serial port but it don't work
my code look like this
Private comPort As New SerialPort comPort.PortName = cboCom.Text comPort.Parity = Parity.None comPort.DataBits = 8 comPort.StopBits = StopBits.One comPort.BaudRate = CInt(cboSpeed.Text) comPort.Handshake = Handshake.None comPort.Open() 'Write GPS command comPort.WriteLine("$PSRF103,00,00,01,01*25")
and the result is my device don't listen and i dont know WHY!!