private void bwDevInfo_DoWork(object sender, DoWorkEventArgs e)
{
// Check COM port is still open.
if (_serialPort.IsOpen)
{
// Request version information from bluetooth module.
_deviceState = HC6State.HC6Version;
e.Result = sendAtCommand(("AT+VERSION").ToCharArray());
}
else
{
// Return port closed status in thread results.
e.Result = HC6Error.HC6ErrorPortClosed;
}
}
private void bwDevUpdate_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
// Check for any error result. If error detected cancel device update process and return.
if (((HC6Error)(e.Result)) != HC6Error.HC6Success)
{
_deviceState = HC6State.HC6Idle;
this.Invoke((MethodInvoker) delegate
{
btnDevUpdate.Enabled = true;
txtStatus.Text = "Bluetooth module update failed.";
MessageBox.Show("Bluetooth module configuration update failed.", this.Text, MessageBoxButtons.OK, MessageBoxIcon.Error);
});
}
}
private void bwDevInfo_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
// Check for any worker related error codes.
if (((HC6Error)e.Result) != HC6Error.HC6Success)
{
this.Invoke((MethodInvoker) delegate
{
txtStatus.Text = HC6ErrorToString((HC6Error)e.Result);
// Switch application to idle state due to error.
_deviceState = HC6State.HC6Idle;
updateErrorUI();
});
return;
}
// Now application should received information from bluetooth module...
txtStatus.Text = "Connected";
tmDevProbe.Enabled = true;
}
private void bwDevUpdate_DoWork(object sender, DoWorkEventArgs e)
{
// Check COM port is still open.
if (_serialPort.IsOpen)
{
// Update display name of the bluetooth module.
if (_deviceState == HC6State.HC6Name)
{
e.Result = sendAtCommand(("AT+NAME" + _devName).ToCharArray());
}
else if (_deviceState == HC6State.HC6Password)
{
// Update bluetooth pair password.
e.Result = sendAtCommand(("AT+PIN" + _devPinCode).ToCharArray());
}
else if (_deviceState == HC6State.HC6Baud)
{
// Update baud rate of the bluetooth module.
e.Result = sendAtCommand(("AT+BAUD" + (_devBaudRate + 1).ToString("X")).ToCharArray());
}
else if (_deviceState == HC6State.HC6Parity)
{
// Update parity check type of the module. (Available from version 1.5).
string parityCode = "PN";
if (_devParity > 0)
{
parityCode = (_devParity == 1) ? "PO" : "PE";
}
e.Result = sendAtCommand(("AT+" + parityCode).ToCharArray());
}
}
else
{
// Return port closed status in thread results.
e.Result = HC6Error.HC6ErrorPortClosed;
_deviceState = HC6State.HC6Idle;
}
}
private void btnDevUpdate_Click(object sender, EventArgs e)
{
int pairPassword = 0;
// Validate bluettoth module's device name.
if (txtDevName.Text.Trim() == string.Empty)
{
MessageBox.Show("Bluetooth module name is not specified.", this.Text, MessageBoxButtons.OK, MessageBoxIcon.Warning);
txtDevName.Focus();
return;
}
// Validate bluettoth pair password.
if (txtDevPassword.Text.Trim() == string.Empty)
{
MessageBox.Show("Bluetooth pair password is not specified.", this.Text, MessageBoxButtons.OK, MessageBoxIcon.Warning);
txtDevPassword.Focus();
return;
}
// Check format of the bluetooth pair password.
if ((!int.TryParse(txtDevPassword.Text.Trim(), out pairPassword)) || (txtDevPassword.Text.Trim().Length != 4))
{
MessageBox.Show("Bluetooth pair password is not valid.\nPair password should be 4-bit number.", this.Text, MessageBoxButtons.OK, MessageBoxIcon.Warning);
txtDevPassword.Focus();
return;
}
_devName = txtDevName.Text.Trim();
_devPinCode = txtDevPassword.Text.Trim();
_devBaudRate = cmbDevBaud.SelectedIndex;
_devParity = cmbDevParity.SelectedIndex;
btnDevUpdate.Enabled = false;
// Start module configuration update process.
_deviceState = HC6State.HC6Name;
bwDevUpdate.RunWorkerAsync();
}
public frmMain()
{
InitializeComponent();
_deviceState = HC6State.HC6Idle;
}
void _serialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
// Wait for addtional data to get filled into COM port read buffer.
System.Threading.Thread.Sleep(500);
// Check for data related with HC6 version.
if (_deviceState == HC6State.HC6Version)
{
string retMessage = _serialPort.ReadExisting();
// Stop timeout counter.
tmDevProbe.Enabled = false;
if (retMessage.Trim().Length > 0)
{
// Trim "OK" prefix from the received version string.
if (retMessage.Substring(0, 2).ToUpper() == "OK")
{
retMessage = retMessage.Substring(2, retMessage.Length - 2);
}
// Update UI with received version information.
txtVersion.Invoke((MethodInvoker) delegate
{
txtVersion.Text = retMessage;
});
}
// Application finished initialization.
_deviceState = HC6State.HC6Idle;
this.Invoke((MethodInvoker) delegate
{
setConnectionMode(true);
});
}
else if (_deviceState == HC6State.HC6Name)
{
// Device name update completed. Move to next update state.
System.Threading.Thread.Sleep(50);
_deviceState = HC6State.HC6Password;
bwDevUpdate.RunWorkerAsync();
}
else if (_deviceState == HC6State.HC6Password)
{
// Device pair password update completed. Move to next update state.
System.Threading.Thread.Sleep(50);
_deviceState = HC6State.HC6Baud;
bwDevUpdate.RunWorkerAsync();
}
else if (_deviceState == HC6State.HC6Baud)
{
// Device baud rate update completed. Move to next update state.
System.Threading.Thread.Sleep(50);
_deviceState = HC6State.HC6Parity;
bwDevUpdate.RunWorkerAsync();
}
else if (_deviceState == HC6State.HC6Parity)
{
// Device parity check type updated. Move to next update state.
this.Invoke((MethodInvoker) delegate
{
btnDevUpdate.Enabled = true;
MessageBox.Show("Bluetooth module configuration updated successfully.", this.Text, MessageBoxButtons.OK, MessageBoxIcon.Information);
});
}
}
