Phidgets Forums

Code: Select all

Hub ch = new Hub();
ch.DeviceSerialNumber = 636524;
ch.Open();

Code: Select all

public void ManageSensors(PhidgetEvent phidgetEvent, int hubPort)
		{
			if(phidgetEvent == PhidgetEvent.attach)
			{
				switch(hubPort)
				{
					case Constants.ABSOLUTE_PRESSURE_SENSOR_PORT:

AbsolutePressureSensor?.Open();
						AbsolutePressureSensor.VoltageRatioSensor.Handler = ProcessPressureData;
						Debug.WriteLine("Abs P Attached and opened");
						break;
					case Constants.DIFFERENTIAL_PRESSURE_SENSOR_PORT_1:
						DifferentialPressureSensor1?.Open();
						DifferentialPressureSensor1.VoltageRatioSensor.Handler = ProcessPressureData;
						Debug.WriteLine("Diff P 1 Attached and opened");
						break;
					case Constants.DIFFERENTIAL_PRESSURE_SENSOR_PORT_2:
						DifferentialPressureSensor2?.Open();
						DifferentialPressureSensor2.VoltageRatioSensor.Handler = ProcessPressureData;
						Debug.WriteLine("Diff P 2 Attached and opened");
						break;
					case Constants.TEMPERATURE_SENSOR_PORT:
						TemperatureSensor?.Open();
						break;
					default:
						// noop
						break;
				}
			}
			else if(phidgetEvent == PhidgetEvent.detach)
			{
				switch (hubPort)
				{
					case Constants.ABSOLUTE_PRESSURE_SENSOR_PORT:
						AbsolutePressureSensor.Close();
						break;
					case Constants.DIFFERENTIAL_PRESSURE_SENSOR_PORT_1:
						DifferentialPressureSensor1.Close();
						break;
					case Constants.DIFFERENTIAL_PRESSURE_SENSOR_PORT_2:
						DifferentialPressureSensor2.Close();
						break;
					case Constants.TEMPERATURE_SENSOR_PORT:
						TemperatureSensor.Close();
						break;
				}
			}
		}

Code: Select all

public void Open()
		{
			try
			{
				_voltageRatioSensor.Open(OPEN_CHANNEL_TIMEOUT_MS);
			}
			catch(PhidgetException ex)
			{
				Debug.WriteLine($"Error opening device {_sensorName}: {ex.Message}");
			}
		}

Code: Select all

public VoltageRatioSensor(string sensorName, VoltageRatioSensorType sensorType, int hubPort)
		{
			_sensorName = sensorName;
			_sensorType = sensorType;
			_filterConstant = DEFAULT_FILTER_CONSTANT;

			_voltageRatioSensor = new VoltageRatioInput();
			_voltageRatioSensor.IsHubPortDevice = true;
			_voltageRatioSensor.HubPort = hubPort;

			_voltageRatioSensor.Attach += VoltageRatioInput_Attach;
			_voltageRatioSensor.Detach += VoltageRatioInput_Detach;
			_voltageRatioSensor.VoltageRatioChange += VoltageRatioInput_VoltageRatioChange;
		}

		
		public void Dispose()
		{
			_voltageRatioSensor?.Close();
		}

		public delegate void VoltageRatioUpdateHandler(double measurement, int index);
		public VoltageRatioUpdateHandler Handler;


		private void VoltageRatioInput_Attach(object sender, Phidget22.Events.AttachEventArgs e)
		{
			VoltageRatioInput attachedDevice = (VoltageRatioInput)sender;

			// setup
			try
			{
				attachedDevice.SensorValueChangeTrigger = 0;                     // trigger whenever data interval is up
				attachedDevice.DataInterval = DATA_INTERVAL_PRESSURE_MS;

				Debug.WriteLine("VR Sensor: " + attachedDevice.HubPort.ToString());
				Debug.WriteLine("VR Channel: " + attachedDevice.Channel.ToString());
			}
			catch (PhidgetException ex)
			{
				Debug.WriteLine($"Error initializing device {_sensorName}: {ex.Message}");
			}
		}