private void bt_connect_Click(object sender, EventArgs e)
{
try
{
if (lb_ComState.Text != "Connect !")
{
string comselect = cb_COM.Text;
Port1.PortName = comselect;
Port1.Open();
lb_ComState.Text = "Connect !";
bt_connect.Text = "Disconnect ...";
cb_COM.Enabled = false;
}
else
{
Port1.Close();
lb_ComState.Text = "Disconnect ...";
bt_connect.Text = "Connect !";
cb_COM.Enabled = true;
}
}
catch
{
MessageBox.Show("Cannot connect to this COM port !");
}
}
//Runs in the background and updates temperature, if Arduino is available
private void updateTemperature()
{
Task.Run(() =>
{
while (true)
{
Thread.Sleep(10000);
//Gets all available ports on the computer and tries to connect to it
foreach (string port in SerialPort.GetPortNames())
{
try
{
Port1.PortName = port;
Port1.Open();
Port1.ReadTimeout = 100;
Port1.ReadLine();
break;
}
catch { Port1.Close(); }
}
if (!Port1.IsOpen)
{
continue;
}
try
{
while (true)
{
string temperature;
temperature = Port1.ReadLine();
temperatureBox.Invoke(new Action(() => temperatureBox.Text = $"The tempeature is: {temperature.Replace("\r", "")} ℃"));
}
}
catch { continue; }
}
});
}
private void bOpen_Click(object sender, EventArgs e)
{
if (Port1.IsOpen)
{
Port1.Close();
}
string s;
// port
Port1.PortName = cbPort.Text;
s = Port1.PortName.ToUpper();
// baud rate
Port1.BaudRate = Convert.ToInt32(cbBaud.Text, 10);
s += "@" + Port1.BaudRate.ToString();
// data bits
switch (cbDataBits.SelectedIndex)
{
case 0: Port1.DataBits = 7; s += ",7"; break;
case 1: Port1.DataBits = 8; s += ",8"; break;
case 2: Port1.DataBits = 9; s += ",9"; break;
}
// parity
switch (cbParity.SelectedIndex)
{
case 0: Port1.Parity = System.IO.Ports.Parity.None; s += "N"; break;
case 1: Port1.Parity = System.IO.Ports.Parity.Odd; s += "O"; break;
case 2: Port1.Parity = System.IO.Ports.Parity.Even; s += "E"; break;
case 3: Port1.Parity = System.IO.Ports.Parity.Mark; s += "M"; break;
case 4: Port1.Parity = System.IO.Ports.Parity.Space; s += "S"; break;
}
// stop bits
switch (cbStopBits.SelectedIndex)
{
case 0: Port1.StopBits = System.IO.Ports.StopBits.None; s += "0"; break;
case 1: Port1.StopBits = System.IO.Ports.StopBits.One; s += "1"; break;
case 2: Port1.StopBits = System.IO.Ports.StopBits.OnePointFive; s += "1.5"; break;
case 3: Port1.StopBits = System.IO.Ports.StopBits.Two; s += "2"; break;
}
try
{
Port1.Open();
bOpen.Enabled = false;
bClose.Enabled = true;
bSend.Enabled = true;
cbPort.Enabled = false;
cbBaud.Enabled = false;
cbDataBits.Enabled = false;
cbParity.Enabled = false;
cbStopBits.Enabled = false;
sStatus.Text = s;
}
catch
{
MessageBox.Show("Unable to open port: " + Port1.PortName, "Port open error", MessageBoxButtons.OK, MessageBoxIcon.Error);
sStatus.Text = "Port not opended";
}
}