public void Close()
{
if (SMSPort.IsOpen == true)
{
SMSPort.Close();
}
}
private void timer1_Tick(object sender, EventArgs e)
{
string sig = null;
float value = 0;
if (SMSPort.IsOpen)
{
try
{
SMSPort.Write("AT+CSQ\r\n");
Thread.Sleep(1000);
// signal = SMSPort.ReadExisting();
int in1 = signal.IndexOf("CSQ:");
string ret = signal.Substring(in1 + 4, 3);
ret = ret.Replace(" ", "");
signal_strength = int.Parse(ret);
toolStripStatusLabel12.Text = signal_strength.ToString();
value = (signal_strength / 32.0f) * 100.0f;
toolStripProgressBar1.Value = (int)(value);
}
catch
{ }
}
}
public bool Open1()
{
string s = null;
if (SMSPort.IsOpen == false)
{
try
{
SMSPort.Open();
SMSPort.Write("AT\r\n");
Thread.Sleep(100);
s = SMSPort.ReadExisting();
if (s.Contains("OK"))
{
SMSPort.Write("AT+CFUN=1\r\n");
ReadThread.Start();
return(true);
}
else
{
if (SMSPort.IsOpen)
{
SMSPort.Close();
}
return(false);
}
}
catch (Exception ex)
{
//MessageBox.Show(ex.ToString());
return(false);
}
}
return(true);
}
public bool SendSMS(string CellNumber, string SMSMessage)
{
string MyMessage = null;
string s = null;;;
//Check if Message Length <= 160
if (SMSMessage.Length <= 160)
{
MyMessage = SMSMessage;
}
else
{
MyMessage = SMSMessage.Substring(0, 160);
}
if (SMSPort.IsOpen == true)
{
SMSPort.Write("AT+CMGF=1\r\n");
Thread.Sleep(1000);
SMSPort.Write("AT+CMGS=\"" + CellNumber + "\"\r\n");
Thread.Sleep(1000);
SMSPort.Write(SMSMessage + (char)(26) + Environment.NewLine);
Thread.Sleep(1000);
s = SMSPort.ReadExisting();
_Continue = false;
if (Sending != null)
{
Sending(false);
}
}
return(false);
}
private void ReadPort()
{
string SerialIn = null;
byte[] RXBuffer = new byte[SMSPort.ReadBufferSize + 1];
while (SMSPort.IsOpen == true)
{
try
{
if ((SMSPort.BytesToRead != 0) & (SMSPort.IsOpen == true))
{
while (SMSPort.BytesToRead != 0)
{
SMSPort.Read(RXBuffer, 0, SMSPort.ReadBufferSize);
SerialIn =
SerialIn + System.Text.Encoding.ASCII.GetString(
RXBuffer);
if (SerialIn.Contains("+CSQ:") == true)
{
signal = SerialIn;
}
if (SerialIn.Contains(">") == true)
{
_ContSMS = true;
}
if (SerialIn.Contains("+CMGS:") == true)
{
_Continue = true;
if (Sending != null)
{
Sending(true);
}
_Wait = false;
SerialIn = string.Empty;
RXBuffer = new byte[SMSPort.ReadBufferSize + 1];
}
}
}
}
catch
{
MessageBox.Show("Unexpected GSM Module Error");
}
if (DataReceived != null)
{
DataReceived(SerialIn);
}
SerialIn = string.Empty;
RXBuffer = new byte[SMSPort.ReadBufferSize + 1];
}
}
private void button5_Click(object sender, EventArgs e)
{
if (SMSPort.IsOpen)
{
SMSPort.Close();
if (SMS_SENDING_THREAD.ThreadState.ToString() == "Running")
{
SMS_SENDING_THREAD.Start();
}
label3.ForeColor = Color.Red;
label3.Text = "GSM Module Disconnected";
}
}
public void Open()
{
if (SMSPort.IsOpen == false)
{
try
{
SMSPort.Open();
SMSPort.Write("AT+CFUN=1\r\n");
ReadThread.Start();
}
catch (Exception ex)
{
//MessageBox.Show(ex.ToString());
}
}
}
