I have an encoder connected from Siemens PLC with data block "DB1.DBD56".
My problem is, the two textbox has the same result or value.
Scenario:
Read Before 1seconds and
Read After 1seconds
I want the result like this:
[For reference]
(https://i.stack.imgur.com/HK9zU.png)
[PLC Ladder]
(https://i.stack.imgur.com/kGN62.png)
#region EVENT TO START READING THE ENCODER
private void timer_anvilState_Tick(object sender, EventArgs e)
{
try
{
Edata_convertion();
read_lastweld_result();
bool anvilState = (bool)plc_s7_1200.Read("DB1.DBX68.4");
if (plc_s7_1200.IsConnected)
{
if (anvilState == true)
{
timer_OneCycleProcess.Start(); //STATE MACHINE TIMER
}
else
{
timer_OneCycleProcess.Stop();
command = "IDLE";
}
}
}
catch (Exception ex)
{
MessageBox.Show("Please check between PC and PLC connection " + "\n" + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
#region READ BEFORE
public void Read_Before()
{
if (plc_s7_1200.IsConnected)
{
bool anvilState = (bool)plc_s7_1200.Read("DB1.DBX68.4");
if (anvilState == true)
{
string Edata = string.Format("{0:0.0}", convertTomm);
txtbefore.Text = Edata;
}
}
}
#endregion
#region READ AFTER
public void Read_After()
{
bool gen_US_on = (bool)plc_s7_1200.Read("DB1.DBX78.2");
if (gen_US_on == true)
{
string Edata = string.Format("{0:0.0}", convertTomm);
txtafterWeld.Text = Edata;
}
}
#endregion
Here's my solution.
Only revised the PLC ladder as stated my replied at comment section.
https://i.stack.imgur.com/GUBtg.png
My C# program nothing changes.
Sharing my basic state machine code
#region ONE CYCLE PROCESS
private void timer_OneCycleProcess_Tick(object sender, EventArgs e)
{
switch (command)
{
case "IDLE":
command = "BEFORE";
break;
case "BEFORE":
before();
command = "AFTER";
break;
case "AFTER":
after();
prev_result();
read_maintenanceCounter();
read_outputCounter();
command = "SAVE";
break;
case "SAVE":
command = "STOP";
save();
save_history();
break;
case "STOP":
timer_OneCycleProcess.Stop();
plc_s7_1200.Write("DB1.DBX38.0", 0);
break;
default:
break;
}
}
#endregion
private void serialPort_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
{
if (Clos_flag) return;
try
{
Listening = true;
if (serialPort.IsOpen)
{
this.txt_weight.Invoke(new MethodInvoker(delegate
{
serialPort.NewLine = "\r";
string weight = serialPort.ReadLine();
weight = weight.Trim();
MessageBox.Show(weight);
if (weight.IndexOf("i") > 0)
{
weight = weight.Substring(3, 8);
txt_weight.Text = weight.Substring(0, weight.LastIndexOf("0") + 1);
}
}));
}
}
catch (Exception eg)
{
MessageBox.Show(eg.ToString());
}
finally
{
Listening = false;
}
}
I use the above code to read the weighing machine, but it keep on prompt the timeout error I'm not sure which part of the coding is wrong.
You check your configure serialport.
It may be error while run code serialPort.Open().
you can refer code:
void InitialComport1()
{
mySerialPort1 = new SerialPort(Temp._comport1);
if (mySerialPort1.IsOpen)
{
mySerialPort1.Close();
}
mySerialPort1.BaudRate = Temp._baudRate1;
mySerialPort1.Parity = Parity.None;
mySerialPort1.StopBits = StopBits.One;
mySerialPort1.DataBits = Temp._dataBit1;
mySerialPort1.Handshake = Handshake.None;
mySerialPort1.RtsEnable = true;
mySerialPort1.DataReceived += new SerialDataReceivedEventHandler(DataReceivedHandler1);
try
{
mySerialPort1.Open();
}
catch
{
Messagebox.Show("Error myserialPort1")
}
}
private void DataReceivedHandler1(object sender, SerialDataReceivedEventArgs e)
{
try
{
string indata = mySerialPort1.ReadLine();
try
{
string mass = indata.Substring(7, 7);
SetText1((Convert.ToInt32(mass)).ToString());
}
catch
{
string mass = indata.Substring(3, 7);
SetText1((Convert.ToInt32(mass)).ToString());
}
}
catch (Exception eg)
{
MessageBox.Show(eg.ToString());
}
}
I am creating a C# WinForm using ZKemKeeper.DLL to fetch data from a Biometric Device. But when I try connecting my App to the Device it always gives Error Code -201
Any Idea what could be causing this? I've read a guide document for ZKemKeeper.DLL but it doesn't list -201 as an error code. Any help would be much appreciated. Thank you.
private void btnConnect_Click(object sender, EventArgs e)
{
try
{
IsConnected = TimeKeeper.Connect_Net(txtIP.Text, 4370);
if (IsConnected == true)
{
MessageBox.Show("Device Connected Successfully.");
}
else
{
TimeKeeper.GetLastError(ref ErrorCode);
MessageBox.Show("Device Not Found. Error Code : " + ErrorCode.ToString(), "Error");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString());
}
}
protected void btnConnect_Click(object sender, EventArgs e)
{
try
{
//this.Cursor = Cursors.WaitCursor;
//ShowStatusBar(string.Empty, true);
if (IsDeviceConnected)
{
IsDeviceConnected = false;
//this.Cursor = Cursors.Default;
return;
}
string ipAddress = txtIPAddress.Text.Trim();
string port = txtPort.Text.Trim();
if (ipAddress == string.Empty || port == string.Empty)
throw new Exception("The Device IP Address and Port is mandotory !!");
int portNumber = 4370;
if (!int.TryParse(port, out portNumber))
throw new Exception("Not a valid port number");
bool isValidIpA = UniversalStatic.ValidateIP(ipAddress);
if (!isValidIpA)
throw new Exception("The Device IP is invalid !!");
isValidIpA = UniversalStatic.PingTheDevice(ipAddress);
if (!isValidIpA)
throw new Exception("The device at " + ipAddress + ":" + port + " did not respond!!");
objZkeeper = new ZkemClient(RaiseDeviceEvent);
IsDeviceConnected = objZkeeper.Connect_Net(ipAddress, portNumber);
if (IsDeviceConnected)
{
string deviceInfo = manipulator.FetchDeviceInfo(objZkeeper, int.Parse(txtMachineNumber.Text.Trim()));
//lblDeviceInfo.Text = deviceInfo;
lblMessage.Text = deviceInfo + "is Connected";
}
}
catch (Exception ex)
{
throw(ex);
}
//this.Cursor = Cursors.Default;
}
I have developed UDP multicast server in c# and UDP multicast reciever in Android,but iam not able to recieve data from server to client(Android).Is it because of the port numbers
i have used in code ? Your help is greatly appretiated and will save me nights.
***Server code
namespace Server
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
UdpClient udpclient = new UdpClient();
IPAddress multicastaddress = IPAddress.Parse("233.45.17.10");
udpclient.JoinMulticastGroup(multicastaddress);
IPEndPoint remoteep = new IPEndPoint(multicastaddress, 10000);
Byte[] buffer = null;
for (int i=1;i<30;i++)
{
buffer = Encoding.Unicode.GetBytes(i.ToString());
int flag = udpclient.Send(buffer, buffer.Length, remoteep);
}
MessageBox.Show("Data Sent TO " + ip.Text + "On Port " + port.Text);
status.Text = "Connected";
}
private void disconnect_Click(object sender, EventArgs e)
{
this.Close();
}
}
}***
Client code(Android):
public class TestMulticast extends Activity
{
static boolean done = false;
EditText et;
TextView tv;
Button b;
MulticastSocket socket;
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
b=(Button)findViewById(R.id.b);
et=(EditText)findViewById(R.id.et);
tv =(TextView)findViewById(R.id.tv);
b.setOnClickListener(new Button.OnClickListener()
{
public void onClick(View v)
{
try
{
String msg = et.getText().toString();
socket.send(new DatagramPacket(msg.getBytes(), 0, msg.getBytes().length, InetAddress.getByName("192.168.1.6"), 10000));
Toast.makeText(getApplicationContext(), "sent", 100).show();
}
catch (Exception e)
{
e.printStackTrace();
Toast.makeText(getApplicationContext(), e.getMessage(), Toast.LENGTH_SHORT).show();
}
}
});
if (!done)
{
try
{
WifiManager wifiManager = (WifiManager)getSystemService(Context.WIFI_SERVICE);
WifiInfo wifiinfo = wifiManager.getConnectionInfo();
int intaddr = wifiinfo.getIpAddress();
if (intaddr == 0)
{
tv.setText("Unable to get WIFI IP address");
}
else
{
byte[] byteaddr = null;
byteaddr = new byte[] {
(byte)(intaddr & 0xff),
(byte)(intaddr >> 8 & 0xff),
(byte)(intaddr >> 16 & 0xff),
(byte)(intaddr >> 24 & 0xff)
};
String machineName = "androidtestdevice";
InetAddress addr = InetAddress.getByAddress(machineName, byteaddr);
tv.append("Using address: " + addr + "\n");
Toast.makeText(getApplicationContext(), "using address"+addr, 50).show();
// create socket
socket = new MulticastSocket(11111);
// set network interface
NetworkInterface iface = NetworkInterface.getByInetAddress(addr);
Toast.makeText(getApplicationContext(), "First address on interface is: " + getAddressFor(iface), 50).show();
tv.append("First address on interface is: " + getAddressFor(iface) + "\n");
// The following line throws an exception in Android (Address is not available)
// If it's not called, the socket can receives packets
// Equivalent code in seems to C work.
//socket.setNetworkInterface(iface);
// join group
socket.joinGroup(InetAddress.getByName("233.45.17.10"));
tv.append("It worked\n");
// start receiving
new DatagramListener(socket, tv).start();
}
}
catch (Exception e) {
tv.append(e.toString() + "\n");
e.printStackTrace();
}
}
}
class DatagramListener extends Thread {
private DatagramSocket socket;
private TextView tv;
DatagramListener(DatagramSocket s, TextView tv) {
socket = s;
this.tv = tv;
}
public void run() {
byte[] buf = new byte[1000];
try {
while (true) {
DatagramPacket recv = new DatagramPacket(buf, buf.length);
socket.receive(recv);
System.out.println("received: " + new String(recv.getData(), recv.getOffset(), recv.getLength()));
runOnUiThread(new MyRunnable(new String(recv.getData(), recv.getOffset(), recv.getLength()), tv));
Toast.makeText(getApplicationContext(), "Now showing data", Toast.LENGTH_SHORT).show();
}
}
catch (Exception e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(), "received: " + e.getMessage(), Toast.LENGTH_SHORT).show();
}
}
}
static private class MyRunnable implements Runnable {
private TextView tv;
private String text;
public MyRunnable(String text, TextView tv) {
this.tv = tv;
this.text = text;
}
public void run() {
tv.append(text + "\n");
}
}
public static InetAddress getAddressFor(NetworkInterface iface) {
Enumeration<InetAddress> theAddresses = iface.getInetAddresses();
boolean found = false;
InetAddress firstAddress = null;
while ((theAddresses.hasMoreElements()) && (found != true)) {
InetAddress theAddress = theAddresses.nextElement();
if (theAddress instanceof Inet4Address) {
firstAddress = theAddress;
found = true;
}
}
return firstAddress;
}
}
Multicast packets are filtered in many android devices depending on vendor (some do others don't htc would filter it most likely), presumably to save battery. it is not blocked in android as such but the vendors.
I wrote code to send an SMS using my GSM phone which is attached to the computer through COM port. The code is below.
The problem is I do see that it is in the outbox of the phone and it actually appears to have been sent, but when I contact the recipient they say that I have not received the message.
I test the phone, and I create and send a message using only the phone and it works perfectly. However, when I do this with my code, it APPEARS to have been sent, and I am getting all the correct AT COMMAND responses from the phone, but the message is actually NOT sent.
Here is the code:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading;
using System.IO.Ports;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
SerialPort serialPort1;
int m_iTxtMsgState = 0;
const int NUM_MESSAGE_STATES = 4;
const string RESERVED_COM_1 = "COM1";
const string RESERVED_COM_4 = "COM4";
public Form1()
{
InitializeComponent();
this.Closing += new CancelEventHandler(Form1_Closing);
}
private void Form1_Load(object sender, EventArgs e)
{
serialPort1 = new SerialPort(GetUSBComPort());
if (serialPort1.IsOpen)
{
serialPort1.Close();
}
serialPort1.Open();
//ThreadStart myThreadDelegate = new ThreadStart(ReceiveAndOutput);
//Thread myThread = new Thread(myThreadDelegate);
//myThread.Start();
this.serialPort1.DataReceived += new SerialDataReceivedEventHandler(sp_DataReceived);
}
private void Form1_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
serialPort1.Close();
}
private void SendLine(string sLine)
{
serialPort1.Write(sLine);
sLine = sLine.Replace("\u001A", "");
consoleOut.Text += sLine;
}
public void DoWork()
{
ProcessMessageState();
}
public void ProcessMessageState()
{
switch (m_iTxtMsgState)
{
case 0:
m_iTxtMsgState = 1;
SendLine("AT\r\n"); //NOTE: SendLine must be the last thing called in all of these!
break;
case 1:
m_iTxtMsgState = 2;
SendLine("AT+CMGF=1\r\n");
break;
case 2:
m_iTxtMsgState = 3;
SendLine("AT+CMGW=" + Convert.ToChar(34) + "+9737387467" + Convert.ToChar(34) + "\r\n");
break;
case 3:
m_iTxtMsgState = 4;
SendLine("A simple demo of SMS text messaging." + Convert.ToChar(26));
break;
case 4:
m_iTxtMsgState = 5;
break;
case 5:
m_iTxtMsgState = NUM_MESSAGE_STATES;
break;
}
}
private string GetStoredSMSID()
{
return null;
}
/* //I don't think this part does anything
private void serialPort1_DataReceived_1(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
{
string response = serialPort1.ReadLine();
this.BeginInvoke(new MethodInvoker(() => textBox1.AppendText(response + "\r\n")));
}
*/
void sp_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
try
{
Thread.Sleep(500);
char[] msg;
msg = new char[613];
int iNumToRead = serialPort1.BytesToRead;
serialPort1.Read(msg, 0, iNumToRead);
string response = new string(msg);
this.BeginInvoke(new MethodInvoker(() => textBox1.AppendText(response + "\r\n")));
serialPort1.DiscardInBuffer();
if (m_iTxtMsgState == 4)
{
int pos_cmgw = response.IndexOf("+CMGW:");
string cmgw_num = response.Substring(pos_cmgw + 7, 4);
SendLine("AT+CMSS=" + cmgw_num + "\r\n");
//stop listening to messages received
}
if (m_iTxtMsgState < NUM_MESSAGE_STATES)
{
ProcessMessageState();
}
}
catch
{ }
}
private void button1_Click(object sender, EventArgs e)
{
m_iTxtMsgState = 0;
DoWork();
}
private void button2_Click(object sender, EventArgs e)
{
string[] sPorts = SerialPort.GetPortNames();
foreach (string port in sPorts)
{
consoleOut.Text += port + "\r\n";
}
}
private string GetUSBComPort()
{
string[] sPorts = SerialPort.GetPortNames();
foreach (string port in sPorts)
{
if (port != RESERVED_COM_1
&& port != RESERVED_COM_4)
{
return port;
}
}
return null;
}
}
This is my code that works (tested) with U9 Telia cellular modem:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.Configuration;
using UsbEject.Library;
using Utils;
namespace Hardware
{
public class TeliaModem : IDisposable
{
public delegate void NewSmsHandler(InboundSMS sms);
public event NewSmsHandler OnNewSMS;
#region private data
System.IO.Ports.SerialPort modemPort;
Timeouter _lastModemKeepAlive;
private delegate void DataReceivedDelegate();
private DataReceivedDelegate dataReceivedDelegate;
Queue<OutboundSMS> _outSmses = new Queue<OutboundSMS>();
enum ModemState
{
Error = -1, NotInitialized, PowerUp, Initializing, Idle,
SendingSMS, KeepAliveAwaitingResponse
};
Timeouter ModemStateTimeouter = new Timeouter(timeout_s: 10, autoReset: false);
ModemState _modemState = ModemState.NotInitialized;
ModemState CurrentModemState
{
get
{
return _modemState;
}
set
{
_modemState = value;
ModemStateTimeouter.Reset();
NihLog.Write(NihLog.Level.Debug, "State changed to: " + value.ToString());
}
}
private System.Windows.Forms.Control _mainThreadOwnder;
#endregion
public TeliaModem(System.Windows.Forms.Control mainThreadOwnder)
{
_mainThreadOwnder = mainThreadOwnder;
dataReceivedDelegate = new DataReceivedDelegate(OnDataReceived);
}
public void SendSMS(string phone, string text)
{
_outSmses.Enqueue(new OutboundSMS(phone, text));
HeartBeat();
}
private void SendSmsNow()
{
OutboundSMS sms = _outSmses.Peek();
sms.Attempt++;
if (sms.Attempt > sms.MaxTries)
{
NihLog.Write(NihLog.Level.Error, "Failure to send after " + sms.MaxTries + " tries");
_outSmses.Dequeue();
return;
}
NihLog.Write(NihLog.Level.Info, "Sending SMS: " + sms.ToString());
WriteToModem("AT+CMGS=\"" + sms.Destination + "\"\r");
System.Threading.Thread.Sleep(500);
WriteToModem(sms.Text);
byte[] buffer = new byte[1];
buffer[0] = 26; // ^Z
modemPort.Write(buffer, offset:0, count:1);
CurrentModemState = ModemState.SendingSMS;
}
public void Dispose()
{
UninitModem();
}
public void HeartBeat()
{
if (CurrentModemState == ModemState.NotInitialized)
{
TryInitModem();
return;
}
if (IsTransitionalState(CurrentModemState) && ModemStateTimeouter.IsTimedOut())
{
NihLog.Write(NihLog.Level.Error, "Modem error. Timed out during " + CurrentModemState);
CurrentModemState = ModemState.Error;
return;
}
if (CurrentModemState == ModemState.Idle && _lastModemKeepAlive.IsTimedOut())
{
// Send keepalive
WriteToModem("AT\r");
CurrentModemState = ModemState.KeepAliveAwaitingResponse;
return;
}
if (CurrentModemState == ModemState.Error)
{
NihLog.Write(NihLog.Level.Debug, "Reenumerating modem...");
UninitModem();
return;
}
if (_outSmses.Count != 0 && CurrentModemState == ModemState.Idle)
{
SendSmsNow();
return;
}
}
private string pendingData;
private void OnDataReceived()
{
// Called in the main thread
string nowWhat = modemPort.ReadExisting();
pendingData += nowWhat;
string[] lines = pendingData.Split(new string[] { "\r\n" }, StringSplitOptions.None);
if (lines.Length == 0)
{
pendingData = string.Empty;
return;
}
else
{
pendingData = lines[lines.Length - 1];
}
// This happens in main thread.
for (int i = 0; i < lines.Length - 1; i++)
{
string line = lines[i];
if (line.Length >= 5 && line.Substring(0, 5) == "+CMT:")
{
// s+= read one more line
if (i == lines.Length - 1) // no next line
{
pendingData = line + "\r\n" + pendingData; // unread the line
continue;
}
string line2 = lines[++i];
NihLog.Write(NihLog.Level.Debug, "RX " + line);
NihLog.Write(NihLog.Level.Debug, "RX " + line2);
InboundSMS sms = new InboundSMS();
sms.ParseCMT(line, line2);
if(OnNewSMS != null)
OnNewSMS(sms);
}
else // Not a composite
NihLog.Write(NihLog.Level.Debug, "RX " + line);
if (line == "OK")
{
OnModemResponse(true);
}
else if (line == "ERROR")
{
OnModemResponse(false);
NihLog.Write(NihLog.Level.Error, "Modem error");
}
}
}
private void ProcessSmsResult(bool ok)
{
if (!ok)
{
OutboundSMS sms = _outSmses.Peek();
if (sms.Attempt < sms.MaxTries)
{
NihLog.Write(NihLog.Level.Info, "Retrying sms...");
return;
}
NihLog.Write(NihLog.Level.Error, "Failed to send SMS: " + sms.ToString());
}
_outSmses.Dequeue();
}
private void OnModemResponse(bool ok)
{
if (CurrentModemState == ModemState.SendingSMS)
ProcessSmsResult(ok);
if (!ok)
{
NihLog.Write(NihLog.Level.Error, "Error during state " + CurrentModemState.ToString());
CurrentModemState = ModemState.Error;
return;
}
switch (CurrentModemState)
{
case ModemState.NotInitialized:
return;
case ModemState.PowerUp:
WriteToModem("ATE0;+CMGF=1;+CSCS=\"IRA\";+CNMI=1,2\r");
CurrentModemState = ModemState.Initializing;
break;
case ModemState.Initializing:
case ModemState.SendingSMS:
case ModemState.KeepAliveAwaitingResponse:
CurrentModemState = ModemState.Idle;
break;
}
}
private void CloseU9TelitNativeApp()
{
bool doneSomething;
do
{
doneSomething = false;
Process[] processes = Process.GetProcessesByName("wirelesscard");
foreach (Process p in processes)
{
p.CloseMainWindow();
doneSomething = true;
NihLog.Write(NihLog.Level.Info, "Killed native U9 app");
System.Threading.Thread.Sleep(1000); // Will not wait if no native app is started
}
} while (doneSomething);
}
void WriteToModem(string s)
{
modemPort.Write(s);
NihLog.Write(NihLog.Level.Debug, "TX " + s);
}
void UninitModem()
{
if (modemPort != null)
modemPort.Dispose();
modemPort = null;
CurrentModemState = ModemState.NotInitialized;
}
private bool IsTransitionalState(ModemState ms)
{
return ms == ModemState.Initializing
|| ms == ModemState.SendingSMS
|| ms == ModemState.PowerUp
|| ms == ModemState.KeepAliveAwaitingResponse;
}
Timeouter _initFailureTimeout =
new Timeouter(timeout_s: 10, autoReset:false, timedOut:true);
void TryInitModem()
{
// Try pistoning the modem with higher frequency. This does no harm (such as redundant logging)
PrepareU9Modem(); // Will do nothing if modem is okay
if (!_initFailureTimeout.IsTimedOut())
return; // Don't try too frequently
if (modemPort != null)
return;
const string modemPortName = "Basecom HS-USB NMEA 9000";
const int speed = 115200;
string portName = Hardware.Misc.SerialPortFromFriendlyName(modemPortName);
if (portName == null)
{
NihLog.Write(NihLog.Level.Error, "Modem not found (yet). ");
_initFailureTimeout.Reset();
return;
}
NihLog.Write(NihLog.Level.Info, string.Format("Found modem port \"{0}\" at {1}", modemPortName, portName));
modemPort = new System.IO.Ports.SerialPort(portName, speed);
modemPort.ReadTimeout = 3000;
modemPort.NewLine = "\r\n";
modemPort.Open();
modemPort.DiscardInBuffer();
modemPort.DataReceived += new System.IO.Ports.SerialDataReceivedEventHandler(delegate { _mainThreadOwnder.Invoke(dataReceivedDelegate); }); // called in different thread!
_lastModemKeepAlive = new Timeouter(60, true);
WriteToModem("AT+CFUN=1\r");
CurrentModemState = ModemState.PowerUp;
}
void CheatU9Telit()
{
// U9 telit appears as USB CDrom on the bus, until disk eject is sent.
// Then, it reappears as normal stuff.
VolumeDeviceClass volumeDeviceClass = new VolumeDeviceClass();
foreach (Volume device in volumeDeviceClass.Devices)
{
if (device.FriendlyName == "PCL HSUPA Modem USB Device")
{
NihLog.Write(NihLog.Level.Info, "Trying to initialize: " + device.FriendlyName);
device.EjectCDRomNoUI();
}
}
}
void PrepareU9Modem()
{
CloseU9TelitNativeApp(); // Closes the autorun native app
CheatU9Telit();
}
}
public class OutboundSMS
{
public string Destination;
public string Text;
public int MaxTries;
public int Attempt = 0;
public OutboundSMS(string dest, string txt)
{
Destination = dest;
Text = txt;
MaxTries = 3;
}
override public string ToString()
{
if(Attempt > 1)
return string.Format("\"{0}\" to {1}, attempt {2}",
Text, Destination, Attempt);
else
return string.Format("\"{0}\" to {1}",
Text, Destination);
}
}
public class InboundSMS
{
public string SourcePhone;
public DateTime ReceiveTime;
public string Text;
public void ParseCMT(string line1, string line2)
{
string[] fields = line1.Split(new char[] { ',', ' ', '/', ':', '"' });
if (fields.Length < 12)
throw new ApplicationException("CMT message too short. Expected 2 fields");
SourcePhone = fields[3];
ReceiveTime = DateTime.Parse("20" + fields[7] + "-" + fields[8] + "-" + fields[9] + " " + fields[10] + ":" + fields[11] + ":" + fields[12].Substring(0, 2)); //test carefully
Text = line2;
}
};
}
Usage example in a winforms application:
Hardware.TeliaModem _modem;
public Form1()
{
InitializeComponent();
_modem = new Hardware.TeliaModem(this);
_modem.OnNewSMS += new Hardware.TeliaModem.NewSmsHandler(ProcessNewSMS);
_timer.Interval = 1000; // milliseconds
_timer.Tick += new EventHandler(OnTimerTick);
_timer.Start();
}
To send an SMS:
_modem.SendSMS(sms.SourcePhone, "Aircon is now " + BoolToString.ON_OFF(_aircon.On));
On timer event, once every second:
private void OnTimerTick(object o, EventArgs e)
{
_modem.HeartBeat();
}
This is registered as Winforms timer handler, so that modem will not have a thread.
Some utility classes used:
namespace Utils
{
public class StopWatch
{
protected DateTime _resetTime;
public StopWatch() { Reset(); }
public void Reset() { _resetTime = DateTime.Now; }
public double TotalSeconds { get { return (DateTime.Now - _resetTime).TotalSeconds; } }
public TimeSpan Time { get { return DateTime.Now - _resetTime; } }
};
public class Timeouter : StopWatch
{
private bool _autoReset;
private double _timeout_s;
public Timeouter(double timeout_s, bool autoReset, bool timedOut = false)
{
_timeout_s = timeout_s;
_autoReset = autoReset;
if (timedOut)
_resetTime -= TimeSpan.FromSeconds(_timeout_s + 1); // This is surely timed out, as requested
}
public bool IsTimedOut()
{
if (_timeout_s == double.PositiveInfinity)
return false;
bool timedout = this.TotalSeconds >= _timeout_s;
if (timedout && _autoReset)
Reset();
return timedout;
}
public void Reset(double timeout_s) { _timeout_s = timeout_s; Reset(); }
public double TimeLeft { get { return _timeout_s - TotalSeconds; } }
}
}
I implemented this in order to turn on air conditioner with SMS (yeah, I live in a hot country). It works. Please feel free to use any of this code.
Enjoy.
Microsoft provides a pretty decent VB.Net example in a KB article "How to access serial and parallel ports by using Visual Basic .NET". I'm not sure what your phone returns, however, if you change the buffer loop in the example, you can at least print out the reply:
MSComm1.Output = "AT" & Chr(13)
Console.WriteLine("Send the attention command to the modem.")
Console.WriteLine("Wait for the data to come back to the serial port...")
' Make sure that the modem responds with "OK".
' Wait for the data to come back to the serial port.
Do
Buffer = Buffer & MSComm1.Input
Console.WriteLine("Found: {0}", Buffer)
Loop Until InStr(Buffer, "OK" & vbCrLf)
GSMComm is a C# library that will allow you to easily interact with a GSM mobile in text or PDU mode. (The site also has a bunch of testing utilities)
Working with GSM modem to send SMS has never been a good idea as such. Here's a checklist to make sure your SMS is sent out properly.
You are sending the SMS in text mode. Try sending it in PDU mode.
Try this library http://phonemanager.codeplex.com/
Do you change SMSC number before sending out the SMS, if so make sure the SMSC is correct.
Also make sure your SIM card has enough credits to let you send outbound SMS.
Check the network status especially when you're sending out SMS from your program. This might be a problem.
I recommend you checkout the Lite edition of NowSMS gateway that comes for free and lets you work with GSM modem very continently. NowSMS will give you api abstraction over a GSM modem connection, so you wil just need to call the Http Api of NowSMS gateway, rest will be taken care by the NowSMS gateway.
Above all this, if your end-users are going to remain internet connected while using your application or if your application is web-based and hosted over internet, I strongly recoomend to do away with GSM modem option and opt-in for reliable Http SMS gateway service providers.