private void ButtonDisconnect_Click(object sender, EventArgs e)
{
PanelConnection.Focus();
TimerSerial.Stop();
SerialPort1.Close();
ButtonDisconnect.SendToBack();
ButtonConnect.BringToFront();
LabelStatus.Text = "Status : Disconnect";
PictureBoxStatusConnection.Visible = true;
PictureBoxStatusConnection.BackColor = Color.Red;
}
private void ButtonConnect_Click(object sender, EventArgs e)
{
PanelConnection.Focus();
try
{
SerialPort1.BaudRate = Convert.ToInt32(ComboBoxBaudRate.SelectedItem);
SerialPort1.PortName = ComboBoxPort.SelectedItem.ToString();
SerialPort1.Open();
TimerSerial.Start();
LabelStatus.Text = "Status : Connected";
ButtonConnect.SendToBack();
ButtonDisconnect.BringToFront();
PictureBoxStatusConnection.BackColor = Color.Green;
}
catch (Exception ex)
{
MessageBox.Show("Please check the Hardware, COM, Baud Rate and try again.", ex.Message);
}
}
private void TimerSerial_Tick(object sender, EventArgs e)
{
try
{
StrSerialIn = SerialPort1.ReadExisting(); // --> Read incoming serial data
var TB = new TextBox();
TB.Multiline = true;
TB.Text = StrSerialIn; // --> Enter serial data into the textbox
if (TB.Lines.Count() > 0)
{
if (TB.Lines[0] == "Failed to read from DHT sensor!") // --> Check Arduino if it fails to read the DHT sensor, if this happens the connection is disconnected
{
TimerSerial.Stop();
SerialPort1.Close();
LabelStatus.Text = "Status : Disconnect";
ButtonDisconnect.SendToBack();
ButtonConnect.BringToFront();
PictureBoxStatusConnection.Visible = true;
PictureBoxStatusConnection.BackColor = Color.Red;
MessageBox.Show("Failed to read from DHT sensor !!!, Please check the Hardware and Please connect again.", MessageBoxButtons.OK.ToString());
return;
}
StrSerialInRam = TB.Lines[0].Substring(0, 1);
if ((StrSerialInRam ?? "") == "H")
{
Hum = TB.Lines[0];
HumL = Hum.Length;
}
else
{
Hum = Hum;
}
StrSerialInRam = TB.Lines[1].Substring(0, 1);
if ((StrSerialInRam ?? "") == "T")
{
Temp = TB.Lines[1];
TempL = Temp.Length;
}
else
{
Temp = Temp;
}
HumResult = Strings.Mid(Hum, 2, HumL);
TempResult = Strings.Mid(Temp, 2, TempL);
TempToProgressBar = Conversions.ToSingle(TempResult);
CircularProgressBarHumidity.Value = Convert.ToInt32(HumResult);
CircularProgressBarHumidity.Text = CircularProgressBarHumidity.Value + " %";
LabelTemperature.Text = TempResult + " °C";
// -----------The process for making a progress bar using a picturebox (Vertical progress bar)-----------
vpb_sy = this.Map(TempToProgressBar, -20.0f, 60.0f, (float)0, (float)120);
if (vpb_sy > 120)
{
vpb_sy = 120;
}
if (vpb_sy < 0)
{
vpb_sy = 0;
}
PictureBoxPBTemp.Height = PictureBoxPBTempBack.Height * vpb_sy / 120;
vpb_ly = PictureBoxPBTempBack.Height - vpb_sy + PictureBoxPBTempBack.Location.Y;
PictureBoxPBTemp.Location = new Point(PictureBoxPBTemp.Location.X, vpb_ly);
// ------------------------------------------------------------------------------------------------------
// -----------Enter the temperature and humidity values into the chart-----------------------------------
Chart1.Series["Humidity "].Points.AddY(HumResult);
if (Chart1.Series[0].Points.Count == ChartLimit)
{
Chart1.Series[0].Points.RemoveAt(0);
}
Chart2.Series["Temperature"].Points.AddY(TempResult);
if (Chart2.Series[0].Points.Count == ChartLimit)
{
Chart2.Series[0].Points.RemoveAt(0);
}
// ------------------------------------------------------------------------------------------------------
// -----------If the Then connection Is successful And running, PictureBoxStatusConnection will blink----
if (PictureBoxStatusConnection.Visible == true)
{
PictureBoxStatusConnection.Visible = false;
}
else if (PictureBoxStatusConnection.Visible == false)
{
PictureBoxStatusConnection.Visible = true;
}
// ------------------------------------------------------------------------------------------------------
}
}
catch (Exception ex)
{
TimerSerial.Stop();
SerialPort1.Close();
LabelStatus.Text = "Status : Disconnect";
ButtonDisconnect.SendToBack();
ButtonConnect.BringToFront();
PictureBoxStatusConnection.BackColor = Color.Red;
MessageBox.Show("Please check the Hardware and Please connect again." + ex.Message);
return;
}
}
