private bool Initialize()
{
Dispose();
if (string.IsNullOrEmpty(DeviceId))
{
throw new WindowsHidException($"{nameof(DeviceId)} must be specified before {nameof(Initialize)} can be called.");
}
_ReadSafeFileHandle = APICalls.CreateFile(DeviceId, APICalls.GenericRead | APICalls.GenericWrite, APICalls.FileShareRead | APICalls.FileShareWrite, IntPtr.Zero, APICalls.OpenExisting, 0, IntPtr.Zero);
_WriteSafeFileHandle = APICalls.CreateFile(DeviceId, APICalls.GenericRead | APICalls.GenericWrite, APICalls.FileShareRead | APICalls.FileShareWrite, IntPtr.Zero, APICalls.OpenExisting, 0, IntPtr.Zero);
if (_ReadSafeFileHandle.IsInvalid)
{
throw new Exception("Could not open connection for reading");
}
if (_WriteSafeFileHandle.IsInvalid)
{
throw new Exception("Could not open connection for writing");
}
ConnectedDeviceDefinition = WindowsHidDeviceFactory.GetDeviceDefinition(DeviceId, _ReadSafeFileHandle);
_ReadFileStream = new FileStream(_ReadSafeFileHandle, FileAccess.ReadWrite, ReadBufferSize, false);
_WriteFileStream = new FileStream(_WriteSafeFileHandle, FileAccess.ReadWrite, WriteBufferSize, false);
return(true);
}
private bool Initialize()
{
try
{
Close();
if (string.IsNullOrEmpty(DeviceId))
{
throw new WindowsHidException($"{nameof(DeviceId)} must be specified before {nameof(Initialize)} can be called.");
}
_ReadSafeFileHandle = APICalls.CreateFile(DeviceId, APICalls.GenericRead | APICalls.GenericWrite, APICalls.FileShareRead | APICalls.FileShareWrite, IntPtr.Zero, APICalls.OpenExisting, 0, IntPtr.Zero);
_WriteSafeFileHandle = APICalls.CreateFile(DeviceId, APICalls.GenericRead | APICalls.GenericWrite, APICalls.FileShareRead | APICalls.FileShareWrite, IntPtr.Zero, APICalls.OpenExisting, 0, IntPtr.Zero);
if (_ReadSafeFileHandle.IsInvalid)
{
throw new Exception("Could not open connection for reading");
}
if (_WriteSafeFileHandle.IsInvalid)
{
throw new Exception("Could not open connection for writing");
}
ConnectedDeviceDefinition = WindowsHidDeviceFactory.GetDeviceDefinition(DeviceId, _ReadSafeFileHandle);
var readBufferSize = ReadBufferSize;
var writeBufferSize = WriteBufferSize;
if (readBufferSize == 0)
{
throw new WindowsHidException($"{nameof(ReadBufferSize)} must be specified. HidD_GetAttributes may have failed or returned an InputReportByteLength of 0. Please specify this argument in the constructor");
}
if (writeBufferSize == 0)
{
throw new WindowsHidException($"{nameof(WriteBufferSize)} must be specified. HidD_GetAttributes may have failed or returned an OutputReportByteLength of 0. Please specify this argument in the constructor. Note: Hid devices are always opened in write mode. If you need to open in read mode, please log an issue here: https://github.com/MelbourneDeveloper/Device.Net/issues");
}
_ReadFileStream = new FileStream(_ReadSafeFileHandle, FileAccess.ReadWrite, readBufferSize, false);
_WriteFileStream = new FileStream(_WriteSafeFileHandle, FileAccess.ReadWrite, writeBufferSize, false);
}
catch (Exception ex)
{
Logger?.Log($"{nameof(Initialize)} error.", nameof(WindowsHidDevice), ex, LogLevel.Error);
throw;
}
return(true);
}
private bool Initialize()
{
try
{
Close();
if (string.IsNullOrEmpty(DeviceId))
{
throw new ValidationException($"{nameof(DeviceId)} must be specified before {nameof(Initialize)} can be called.");
}
//TODO: Work on getting these correct, and make sure that different values can be passed in here.
_ReadSafeFileHandle = APICalls.CreateFile(DeviceId, APICalls.GenericRead, 3, IntPtr.Zero, APICalls.OpenExisting, 0, IntPtr.Zero);
_WriteSafeFileHandle = APICalls.CreateFile(DeviceId, APICalls.GenericRead | APICalls.GenericWrite, APICalls.FileShareRead | APICalls.FileShareWrite, IntPtr.Zero, APICalls.OpenExisting, 0, IntPtr.Zero);
if (_ReadSafeFileHandle.IsInvalid)
{
throw new ApiException(Messages.ErrorMessageCantOpenRead);
}
IsReadOnly = _WriteSafeFileHandle.IsInvalid ? true : false;
if (IsReadOnly.Value)
{
Logger?.Log(Messages.WarningMessageOpeningInReadonlyMode(DeviceId), nameof(WindowsHidDevice), null, LogLevel.Warning);
}
ConnectedDeviceDefinition = WindowsHidDeviceFactory.GetDeviceDefinition(DeviceId, _ReadSafeFileHandle, Logger);
var readBufferSize = ReadBufferSize;
var writeBufferSize = WriteBufferSize;
if (readBufferSize == 0)
{
throw new ValidationException($"{nameof(ReadBufferSize)} must be specified. HidD_GetAttributes may have failed or returned an InputReportByteLength of 0. Please specify this argument in the constructor");
}
_ReadFileStream = new FileStream(_ReadSafeFileHandle, FileAccess.Read, readBufferSize, false);
if (_ReadFileStream.CanRead)
{
Logger?.Log(Messages.SuccessMessageReadFileStreamOpened, nameof(WindowsHidDevice), null, LogLevel.Information);
}
else
{
Logger?.Log(Messages.WarningMessageReadFileStreamCantRead, nameof(WindowsHidDevice), null, LogLevel.Warning);
}
if (!IsReadOnly.Value)
{
if (writeBufferSize == 0)
{
throw new ValidationException($"{nameof(WriteBufferSize)} must be specified. HidD_GetAttributes may have failed or returned an OutputReportByteLength of 0. Please specify this argument in the constructor");
}
//Don't open if this is a read only connection
_WriteFileStream = new FileStream(_WriteSafeFileHandle, FileAccess.ReadWrite, writeBufferSize, false);
if (_WriteFileStream.CanWrite)
{
Logger?.Log(Messages.SuccessMessageWriteFileStreamOpened, nameof(WindowsHidDevice), null, LogLevel.Information);
}
else
{
Logger?.Log(Messages.WarningMessageWriteFileStreamCantWrite, nameof(WindowsHidDevice), null, LogLevel.Warning);
}
}
}
catch (Exception ex)
{
Logger?.Log($"{nameof(Initialize)} error.", nameof(WindowsHidDevice), ex, LogLevel.Error);
throw;
}
return(true);
}