/// <summary>
/// Listen for changes in the OSI points and send changes to Rasp PI (VFD State, Flow, Lock, and Desired Flow Rate)
/// </summary>
public static void osiListen()
{
// Data buffer for incoming data.
byte[] bytes = new Byte[1024];
// Establish the local endpoint for the socket.
IPAddress ipAddress = IPAddress.Parse("192.168.144.144");
int port = 9700;
IPEndPoint localEndPoint = new IPEndPoint(ipAddress, port);
// Create a TCP/IP socket.
Socket listener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
// Bind the socket to the local endpoint and listen for incoming connections.
try
{
//listener.Connect(localEndPoint);
listener.Bind(localEndPoint);
listener.Listen(100);
while (true)
{
// Set the event to nonsignaled state.
allDone.Reset();
if (!listener.Poll(300, SelectMode.SelectRead))
{
Console.WriteLine("Dong Dong Dong");
}
// Start an asynchronous socket to listen for connections.
Console.WriteLine("Waiting for Rasp PI connection...");
listener.BeginAccept(new AsyncCallback(AcceptCallback), listener);
// Wait until a connection is made before continuing.
allDone.WaitOne();
Console.WriteLine("Rasp PI connected!!!!");
}
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
/****Search current VFD State and Frequency PI values*****/
//initailize OSI PI and server
OSIPI myPI = new OSIPI();
myPI.connect_Server("ESMARTSERVER-PC");
//Create PI values and Lists for each
PointVal savedVfdState = null;
PointVal currentVfdState = null;
PointVal savedFreq = null;
PointVal currentFreq = null;
PointVal savedLockState = null;
PointVal currentLockState = null;
PointVal savedDesiredFlow = null;
PointVal currentDesiredFlow = null;
List <PointVal> vfdStateList;
List <PointVal> freqList;
List <PointVal> lockStateList;
List <PointVal> desiredFlowList;
if (myPI.check_connection())
{
//put VFD state, frequency, lock, and desired floe rate in a saved PI points
vfdStateList = myPI.searchPiPoints("SP14VICE_VfdState", DateTime.Now.ToString(), DateTime.Now.ToString());
savedVfdState = currentVfdState = vfdStateList.ElementAt(0);
freqList = myPI.searchPiPoints("SP14VICE_Freq", DateTime.Now.ToString(), DateTime.Now.ToString());
savedFreq = currentFreq = freqList.ElementAt(0);
lockStateList = myPI.searchPiPoints("SP14VICE_Lock", DateTime.Now.ToString(), DateTime.Now.ToString());
savedLockState = currentLockState = lockStateList.ElementAt(0);
desiredFlowList = myPI.searchPiPoints("SP14VICE_DesiredFlow", DateTime.Now.ToString(), DateTime.Now.ToString());
savedDesiredFlow = currentDesiredFlow = desiredFlowList.ElementAt(0);
}
while (true)
{
//get current OSI PI value for VFD, frequency, lock, and desire flow rate
if (myPI.check_connection())
{
vfdStateList = myPI.searchPiPoints("SP14VICE_VfdState", DateTime.Now.ToString(), DateTime.Now.ToString());
currentVfdState = vfdStateList.ElementAt(0);
freqList = myPI.searchPiPoints("SP14VICE_Freq", DateTime.Now.ToString(), DateTime.Now.ToString());
currentFreq = freqList.ElementAt(0);
lockStateList = myPI.searchPiPoints("SP14VICE_Lock", DateTime.Now.ToString(), DateTime.Now.ToString());
currentLockState = lockStateList.ElementAt(0);
desiredFlowList = myPI.searchPiPoints("SP14VICE_DesiredFlow", DateTime.Now.ToString(), DateTime.Now.ToString());
currentDesiredFlow = desiredFlowList.ElementAt(0);
}
//check if the OSI server value has changed for VfdState
if (currentVfdState.value != savedVfdState.value)
{
//send current value to Rasp PI
savedVfdState = currentVfdState;
Send(listener, "<,S=" + savedVfdState.ToString() + ",EOF,>");
// PythonComm.sendTCP("192.168.144.126", 9750, "<,S=" + savedVfdState.ToString() + ",EOF,>");
}
//check if the OSI server value has changed for frequency
if (currentFreq.value != savedFreq.value)
{
//send current value to Rasp PI
savedFreq = currentFreq;
Send(listener, "<,F=" + savedFreq.ToString() + ",EOF,>");
// PythonComm.sendTCP("192.168.144.126", 9750, "<,F=" + savedFreq.ToString() + ",EOF,>");
}
//check if the OSI server value has changed for Lock
if (currentLockState.value != savedLockState.value)
{
//send current value to Rasp PI
savedLockState = currentLockState;
Send(listener, "<,S=" + savedLockState.ToString() + ",EOF,>");
// PythonComm.sendTCP("192.168.144.126", 9750, "<,S=" + savedLockState.ToString() + ",EOF,>");
}
//check if the OSI server value has changed for desired flow rate
if (currentLockState.value != savedLockState.value)
{
//Initiate function to change flow via frequency
savedDesiredFlow = currentDesiredFlow;
Thread changeFreq = new Thread(new ParameterizedThreadStart(freqConversion)); //thread to change frequency
changeFreq.Start(savedDesiredFlow.value); //start thread
}
Thread.Sleep(5000); //sleep 5 sec then update
}
}
public static void osiListen()
{
// Data buffer for incoming data.
byte[] bytes = new Byte[1024];
// Establish the local endpoint for the socket.
IPAddress ipAddress = IPAddress.Parse("192.168.144.144");
int port = 9700;
IPEndPoint localEndPoint = new IPEndPoint(ipAddress, port);
// Create a TCP/IP socket.
Socket listener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
// Bind the socket to the local endpoint and listen for incoming connections.
try
{
//listener.Connect(localEndPoint);
listener.Bind(localEndPoint);
listener.Listen(100);
while (true)
{
// Set the event to nonsignaled state.
allDone.Reset();
if (!listener.Poll(300, SelectMode.SelectRead))
{
Console.WriteLine("Dong Dong Dong");
}
// Start an asynchronous socket to listen for connections.
Console.WriteLine("Waiting for Rasp PI connection...");
listener.BeginAccept(new AsyncCallback(AcceptCallback), listener);
// Wait until a connection is made before continuing.
allDone.WaitOne();
}
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
/****Search current VFD State PI value*****/
OSIPI myPI = new OSIPI();
myPI.connect_Server("ESMARTSERVER-PC");
PointVal stateVal = null;
PointVal currentVal = null;
if (myPI.check_connection())
{
//put VFD state in a saved PI point
List <PointVal> vfdState = myPI.searchPiPoints("SP14VICE_VfdState", DateTime.Now.ToString(), DateTime.Now.ToString());
stateVal = vfdState.ElementAt(0);
}
while (true)
{
//get current OSI PI value for VFD
if (myPI.check_connection())
{
List <PointVal> vfdCurrentState = myPI.searchPiPoints("SP14VICE_VfdState", DateTime.Now.ToString(), DateTime.Now.ToString());
currentVal = vfdCurrentState.ElementAt(0);
}
//check if the OSI server value has changed
if (currentVal != stateVal)
{
//send current value to Rasp PI
stateVal = currentVal;
Send(listener, "<,S=" + stateVal.ToString() + ",EOF,>");
}
Thread.Sleep(5000);
}
}