public void ProcessSerial(object sender, System.EventArgs e)
{
if (!_SerialPort.IsOpen)
{
return;
}
if ((DateTime.Now - _LastTimeAlive).TotalMilliseconds > 2500 || (DateTime.Now - _LastUpdateTime).TotalMilliseconds > 2500)
{
if (OnEvent != null)
{
OnEvent(this, Actions.TIMEOUT_OCCURED);
}
}
bool sendData = false;
try
{
if (_Message.Receive() > 0)
{
_LastTimeAlive = DateTime.Now;
if (!_Message.IsCorrupt)
{
switch ((Actions)_Message.Action)
{
case Actions.UPDATE_SETTINGS:
//VentValveOpen;AirPumpOn;PressureGlobalBar;ControlFromPC;PressureMilliBar
if (_Message.DataLength == 6)
{
_LastUpdateTime = DateTime.Now;
byte readval = 0;
if (_Message.Read_byte(ref readval))
{
VentValveOpen = readval != 0;
if (_Message.Read_byte(ref readval))
{
AirPumpOn = readval != 0;
if (_Message.Read_byte(ref readval))
{
if (!ControlFromPC)
{ //only read global set pressure
PressureGlobalBar = readval;
}
if (OnEvent != null)
{
OnEvent(this, PressureGlobalBar != readval ? Actions.INCORRECT_PRESSURE : Actions.CORRECT_PRESSURE);
}
if (_Message.Read_byte(ref readval))
{
IsPCControlStatusOK = (ControlFromPC == (readval != 0));
if (OnEvent != null && IsPCControlStatusOK)
{
OnEvent(this, readval == 1 ? Actions.PC_AQUIRE_CONTROL_SUCCESS : Actions.PC_RELEASE_CONTROL_SUCCESS);
}
short millibars = 0;
if (_Message.Read_Int16(ref millibars))
{
PressureMilliBar = (ushort)millibars;
if (!AreValuesUpToDate)
{
AreValuesUpToDate = true;
}
if (OnEvent != null)
{
OnEvent(this, Actions.UPDATE_SETTINGS);
}
}
}
}
}
}
}
break;
case Actions.PC_AQUIRE_CONTROL_SUCCESS:
case Actions.PC_RELEASE_CONTROL_SUCCESS:
if (OnEvent != null)
{
OnEvent(this, (Actions)_Message.Action);
}
break;
}
}
}
if ((DateTime.Now - _LastDataSendTime).TotalMilliseconds > 100)
{
_LastDataSendTime = DateTime.Now;
if (!IsPCControlStatusOK)
{
_Message.BeginWrite();
_Message.Action = (byte)(ControlFromPC ? Actions.PC_AQUIRE_CONTROL : Actions.PC_RELEASE_CONTROL);
_Message.Send();
sendData = true;
}
if (ControlFromPC)
{
_Message.BeginWrite();
_Message.Action = (byte)Actions.UPDATE_GLOBAL_PRESSURE;
_Message.Write_byte(PressureGlobalBar);
_Message.Send();
sendData = true;
}
if (!sendData)
{
_Message.BeginWrite();
_Message.Action = (byte)Actions.PING;
_Message.Send();
}
}
}
catch (Exception)
{ /*State not OK? Connection corrupted? */
if (OnEvent != null)
{
OnEvent(this, Actions.CONNECTION_CORRUPTED);
}
}
}
/// <summary>
/// Automatically check existing devices and see if they are a decompression chamber by trial and error
/// </summary>
/// <param name="maxTries"></param>
/// <returns>true if found false if not</returns>
private bool SearchForDecompressionDevice(int maxTries)
{
if (_SerialPort == null)
{
return false;
}
bool found = false;
int tries = 0;
Thread.Sleep(1000);
while (!found && tries < maxTries)
{
foreach (string port in SerialPort.GetPortNames())
{
if (_SerialPort.IsOpen)
{
try
{
_SerialPort.Close();
}
catch (Exception) { /*We just want to disconnect and continue searching*/ }
}
try
{
_SerialPort.PortName = port;
_SerialPort.Open();
Message message = new Message(_SerialPort);
message.BeginWrite();
message.Action = (byte)Actions.CHECK_FOR_DECOMPRESSION_DEVICE;
message.Write_byte((byte)MsgStruct.MS_DataBegin);
message.Send();
Stopwatch watch = new Stopwatch();
watch.Start();
while (message.Receive() != 6 && watch.ElapsedMilliseconds < 150) { }
if (message.DataLength == 1 && !message.IsCorrupt)
{
byte output = 0;
if (message.Action == (byte)Actions.HERE_IS_A_DECOMPRESSION_DEVICE && message.Read_byte(ref output))
{
if (output == (byte)MsgStruct.MS_DataEnd)
{
//found decompression device
return true;
}
}
}
}
catch (Exception)
{
continue;
}
}
++tries;
Thread.Sleep(1);
}
return false;
}
/// <summary>
/// Automatically check existing devices and see if they are a decompression chamber by trial and error
/// </summary>
/// <param name="maxTries"></param>
/// <returns>true if found false if not</returns>
private bool SearchForDecompressionDevice(int maxTries)
{
if (_SerialPort == null)
{
return(false);
}
bool found = false;
int tries = 0;
Thread.Sleep(1000);
while (!found && tries < maxTries)
{
foreach (string port in SerialPort.GetPortNames())
{
if (_SerialPort.IsOpen)
{
try
{
_SerialPort.Close();
}
catch (Exception) { /*We just want to disconnect and continue searching*/ }
}
try
{
_SerialPort.PortName = port;
_SerialPort.Open();
Message message = new Message(_SerialPort);
message.BeginWrite();
message.Action = (byte)Actions.CHECK_FOR_DECOMPRESSION_DEVICE;
message.Write_byte((byte)MsgStruct.MS_DataBegin);
message.Send();
Stopwatch watch = new Stopwatch();
watch.Start();
while (message.Receive() != 6 && watch.ElapsedMilliseconds < 150)
{
}
if (message.DataLength == 1 && !message.IsCorrupt)
{
byte output = 0;
if (message.Action == (byte)Actions.HERE_IS_A_DECOMPRESSION_DEVICE && message.Read_byte(ref output))
{
if (output == (byte)MsgStruct.MS_DataEnd)
{
//found decompression device
return(true);
}
}
}
}
catch (Exception)
{
continue;
}
}
++tries;
Thread.Sleep(1);
}
return(false);
}