private void timerBkgrTasks_Tick(object sender, EventArgs e)
{
// enumerate for new ports and update the list
if (!SerialPort.GetPortNames().SequenceEqual(portNames))
{
portNames = SerialPort.GetPortNames();
comboBox1.Items.Clear();
comboBox1.Items.AddRange(portNames);
if (comboBox1.Items.Count > 0)
{
comboBox1.SelectedIndex = 0;
}
}
// state - PORT_OPENING
// type - transitory to PORT_WAITING_GRBL_HEADER
// performs - opening COM connection and start of acquisition timer
// error - return to PORT_CLOSED state
if (currentPortState == PortStates.PORT_OPENING)
{
try
{
serialPort.PortName = comboBox1.Text;
serialPort.Open();
serialPort.DiscardInBuffer();
timerComHandler.Enabled = true;
currentPortState = PortStates.PORT_WAITING_GRBL_HEADER;
btnConnect.Text = "Disconnect";
comboBox1.Enabled = false;
textInput.Enabled = true;
}
catch
{
currentPortState = PortStates.PORT_CLOSING;
}
}
// state - PORT_WAITING_GRBL_HEADER
// type - transitory to PORT_RUNNING
// performs - opening COM connection and start of acquisition timer
// error - return to PORT_CLOSED state
if (currentPortState == PortStates.PORT_WAITING_GRBL_HEADER)
{
//currentPortState = PortStates.PORT_RUNNING_IDLE;
}
// state - PORT_RUNNING_IDLE
// type - permanent state
// performs - updates different states in the system
// error - none
if (currentPortState == PortStates.PORT_RUNNING_IDLE)
{
if (GcodeHandler.GcodeLoaded)
{
btnStart.Enabled = true;
btnStop.Enabled = true;
}
}
// state - PORT_RUNNING_TRANSMIT
// type - permanent state
// performs - updates different states in the system
// error - none
// hadled - handled in timerComHandler, not here
// state - PORT_CLOSING
// type - transitory state to PORT_CLOSED
// performs - closes the port and stops the acquisition timer
if (currentPortState == PortStates.PORT_CLOSING)
{
serialPort.DiscardInBuffer();
try
{
serialPort.Close();
}
catch
{
// do nothing, port goes into state PORT_CLOSED anyway
//Console.WriteLine("Error at closing port");
}
currentPortState = PortStates.PORT_CLOSED;
btnConnect.Text = "Connect";
textInput.Enabled = false;
comboBox1.Enabled = true;
// disable GCODE file processor buttons
btnStart.Enabled = false;
btnStop.Enabled = false;
}
// update graphics interface
GraphicsHandler.SetDrawingColor1();
GcodeHandler.RedrawFullPicture();
toolStripStatusLabel1.Text = currentPortState.ToString();
glControl1.Invalidate();
}
private void glControl1_ContextCreated(object sender, OpenGL.GlControlEventArgs e)
{
GraphicsHandler.GraphicContextCreated();
}