public int OpenService(string deviceClass, string deviceName, object dispatchObject)
{
Log.DebugFormat("OpeningService for deviceClass {0} called {1}", deviceClass, deviceName);
OpenServiceDeviceClass = deviceClass;
OpenServiceDeviceName = deviceName;
if (_props == null)
{
_props = GetDeviceSpecifcUposProperties();
}
Log.Debug("Creating EventDispatcher");
_eventQueue = new EventThreadHelper(GetDeviceSpecificControlObjectDispatcher(dispatchObject), _props);
Log.Debug("Getting configuration options from Registry");
var registryValues = WindowsUposRegistry.GetRegistryValues(OpenServiceDeviceClass, OpenServiceDeviceName);
if (VerifyDeviceSettings(registryValues))
{
_device = GetDevice();
_openResult = _device.CanCommunicateWithDevice(deviceClass, deviceName, registryValues);
if (_openResult == OpenResultConstants.OPOS_SUCCESS)
{
Log.Debug("Communication with device succeeded, Opening service is successful");
_props.ByName.Claimed = false;
_props.ByName.DeviceEnabled = false;
_props.ByName.DataEventEnabled = false;
_props.ByName.FreezeEvents = false;
_props.ByName.State = ServiceStateConstants.OPOS_S_IDLE;
_props.ByName.DeviceDescription = GetDeviceDescription();
_props.ByName.ServiceObjectVersion = GetImplementingVersion();
return(SetResultCode(ResultCodeConstants.Success));
}
Log.Error("Device Specific check for communicating with device failed. Check configuration values to verify proper values are set to be able to communicate with device");
return(SetResultCode(ResultCodeConstants.NoHardware));
}
Log.Error("Device Specific validation of configuration options failed. Please verify that all settings are correct and in proper location in Windows registry");
_openResult = OpenResultConstants.OPOS_ORS_CONFIG;
return(SetResultCode(ResultCodeConstants.Failure));
}
public int CloseService()
{
if (_props.ByName.State == ServiceStateConstants.OPOS_S_CLOSED)
{
return(SetResultCode(ResultCodeConstants.Success));
}
if (_props.ByName.DeviceEnabled)
{
_props.ByName.DeviceEnabled = false;
}
if (_props.ByName.Claimed)
{
ReleaseDevice();
}
DestroyEventQueue();
_props.ByName.State = ServiceStateConstants.OPOS_S_CLOSED;
_device.Dispose();
_device = null;
return(SetResultCode(ResultCodeConstants.Success));
}
