private static extern Boolean DeviceIoControl
(
int hfile,
UInt32 IOctlcode,
ref SERIAL_STATUS inbuf, // fixme ... should not be specific
UInt32 inbufsize,
ref SERIAL_STATUS outbuf, // fixme .... this should not be specific
UInt32 outbufsize,
ref UInt32 return_count,
IntPtr overlap
);
// private void whackTimeouts()
// {
// // SET THE COMM TIMEOUTS.
// COMMTIMEOUTS ctoCommPort = new COMMTIMEOUTS();
// // GetCommTimeouts(hComm,ref ctoCommPort);
//
// // ctoCommPort.ReadTotalTimeoutConstant = ReadTimeout;
// // ctoCommPort.ReadTotalTimeoutMultiplier = 0;
//
// ctoCommPort.ReadIntervalTimeout = UInt32.MaxValue;
// ctoCommPort.ReadTotalTimeoutMultiplier = 0;
// ctoCommPort.ReadTotalTimeoutConstant = 0;
// ctoCommPort.WriteTotalTimeoutMultiplier = 0;
// ctoCommPort.WriteTotalTimeoutConstant = 0;
// bool temp = SetCommTimeouts(hComm,ref ctoCommPort);
// Console.WriteLine("SetCommTimeOuts: " + temp);
// COMMTIMEOUTS cto = new COMMTIMEOUTS();
// temp = GetCommTimeouts(hComm, ref cto);
// Console.WriteLine("GetCommTimeOuts: " + temp);
// Console.WriteLine("cto: Interval: " + cto.ReadIntervalTimeout + " Mult: " +
// cto.ReadTotalTimeoutMultiplier + " Const: " + cto.ReadTotalTimeoutConstant);
// }
// public byte[] Read(int NumBytes) {
// byte[] BufBytes;
// byte[] OutBytes;
// BufBytes = new byte[NumBytes];
// if (hComm!=INVALID_HANDLE_VALUE) {
// OVERLAPPED ovlCommPort = new OVERLAPPED();
// int BytesRead=0;
// ReadFile(hComm,BufBytes,NumBytes,ref BytesRead,ref ovlCommPort);
// OutBytes = new byte[BytesRead];
// Array.Copy(BufBytes,OutBytes,BytesRead);
// }
// else {
// throw(new ApplicationException("Comm Port Not Open"));
// }
// return OutBytes;
// }
// returns count of chars available to be read ... sort of a hack as this is using an ioctl
// that is not in the documentation but does appear in the dd source
// this is needed when using the MixW CommEmulDrv virt serial ports becuse it does not respect
// the SetCommTimeout values, so a read with no data avail will block forever
//
private uint checkIfCharsAvail()
{
UInt32 returned_count = SIZE_SERIAL_STATUS;
if (!Opened)
{
return(0);
}
SERIAL_STATUS ss = new SERIAL_STATUS();
// Console.WriteLine("Calling ioctl....");
// Thread.Sleep(1000);
Boolean result = DeviceIoControl(hComm, IOCTL_SERIAL_GET_COMMSTATUS,
ref ss, SIZE_SERIAL_STATUS, ref ss, SIZE_SERIAL_STATUS, ref returned_count, (IntPtr)0);
// Console.WriteLine("....ioctl returned");
// Thread.Sleep(1000);
if (result == false)
{
Console.WriteLine("JustinIO: IOControl failed!");
return(0);
}
return(ss.AmountInInQueue);
}
// private void whackTimeouts()
// {
// // SET THE COMM TIMEOUTS.
// COMMTIMEOUTS ctoCommPort = new COMMTIMEOUTS();
// // GetCommTimeouts(hComm,ref ctoCommPort);
//
// // ctoCommPort.ReadTotalTimeoutConstant = ReadTimeout;
// // ctoCommPort.ReadTotalTimeoutMultiplier = 0;
//
// ctoCommPort.ReadIntervalTimeout = UInt32.MaxValue;
// ctoCommPort.ReadTotalTimeoutMultiplier = 0;
// ctoCommPort.ReadTotalTimeoutConstant = 0;
// ctoCommPort.WriteTotalTimeoutMultiplier = 0;
// ctoCommPort.WriteTotalTimeoutConstant = 0;
// bool temp = SetCommTimeouts(hComm,ref ctoCommPort);
// Console.WriteLine("SetCommTimeOuts: " + temp);
// COMMTIMEOUTS cto = new COMMTIMEOUTS();
// temp = GetCommTimeouts(hComm, ref cto);
// Console.WriteLine("GetCommTimeOuts: " + temp);
// Console.WriteLine("cto: Interval: " + cto.ReadIntervalTimeout + " Mult: " +
// cto.ReadTotalTimeoutMultiplier + " Const: " + cto.ReadTotalTimeoutConstant);
// }
// public byte[] Read(int NumBytes) {
// byte[] BufBytes;
// byte[] OutBytes;
// BufBytes = new byte[NumBytes];
// if (hComm!=INVALID_HANDLE_VALUE) {
// OVERLAPPED ovlCommPort = new OVERLAPPED();
// int BytesRead=0;
// ReadFile(hComm,BufBytes,NumBytes,ref BytesRead,ref ovlCommPort);
// OutBytes = new byte[BytesRead];
// Array.Copy(BufBytes,OutBytes,BytesRead);
// }
// else {
// throw(new ApplicationException("Comm Port Not Open"));
// }
// return OutBytes;
// }
// returns count of chars available to be read ... sort of a hack as this is using an ioctl
// that is not in the documentation but does appear in the dd source
// this is needed when using the MixW CommEmulDrv virt serial ports becuse it does not respect
// the SetCommTimeout values, so a read with no data avail will block forever
//
private uint checkIfCharsAvail()
{
UInt32 returned_count = SIZE_SERIAL_STATUS;
if ( !Opened ) return 0;
SERIAL_STATUS ss = new SERIAL_STATUS();
// Console.WriteLine("Calling ioctl....");
// Thread.Sleep(1000);
Boolean result = DeviceIoControl(hComm, IOCTL_SERIAL_GET_COMMSTATUS,
ref ss, SIZE_SERIAL_STATUS, ref ss, SIZE_SERIAL_STATUS, ref returned_count, (IntPtr)0);
// Console.WriteLine("....ioctl returned");
// Thread.Sleep(1000);
if ( result == false )
{
Console.WriteLine("JustinIO: IOControl failed!");
return 0;
}
return ss.AmountInInQueue;
}
private static extern Boolean DeviceIoControl ( int hfile, UInt32 IOctlcode, ref SERIAL_STATUS inbuf, // fixme ... should not be specific UInt32 inbufsize, ref SERIAL_STATUS outbuf, // fixme .... this should not be specific UInt32 outbufsize, ref UInt32 return_count, IntPtr overlap );
