tbf/TestBenchFramework/BenchControl/Modbus/CometAmbient/Ambient.cs

///
/// Copyright (c) 2017 Sensus Metering Systems
///
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO.Ports;
using System.Text;
using log4net;
using Config.Entities;
using TBF.BenchControl.Generic;
using TBF.Boxes;

namespace TBF.BenchControl.Modbus.CometAmbient
{
    /// <summary>
    /// Ambient temperature / humidity / pressure meter 'Greco' connected via serial interface (RS232)
	/// Connection settings: 9600 Bd 8-bits No-parity 2-stop-bits Flow control: none.
	/// </summary>
	public class Ambient : ComponentBase, IDevice, IOperation, GenericDevices.IAmbient
    {
		private static readonly ILog log = LogManager.GetLogger(typeof(Ambient));
		public override string ToString() { return string.Format("Ambient({0})", Cfg.ToString(1)); }

		readonly AmbientCfg ambientCfg;
        readonly GenericDevices.IModbus modbus;

		/// <summary>The state of the measurement</summary>
		MsrmntState msrmntState;

        ///
		/// Measured values when MsrmntState == MsrmntState.Valid
        ///
        float temperature;      /// [deg C]
        float pressure;         /// [bar]
        float humidity;         /// [%]

		/// <summary>Measurement time stamp when MsrmntState == MsrmntState.Valid</summary>
		int msrmntTimeStamp;

		public Ambient()
		{
		}

		/// <summary>
		/// Ambient temperature / humidity / pressure meter 'Greco' connected via serial interface (RS232)
		/// </summary>
        public Ambient(Generic.IComponentCfg cfg, IList<Generic.IComponent> components)
            : base(cfg)
		{
            ambientCfg = cfg as AmbientCfg;

            modbus = (GenericDevices.IModbus)TbfComponents.FindComponent(cfg.ParentName, components);
            if (modbus == null) throw new Exception("Cannot find " + Name + " parent");

            log.Debug(this.ToString());
        }

		public void Initialize()
		{
			if (ambientCfg.DebugLevel == DebugMode.Simulate)
			{
				temperature = 20.0f;
				humidity = 40.0f;
				pressure = 1.0f;
				msrmntTimeStamp = StateMachine.Time;
				msrmntState = MsrmntState.Valid;
				return;
			}

			msrmntState = MsrmntState.Busy;

            log.FatalFormat("Successfully initialized device {0}", ToString());
        }

        /// <summary>Run this device</summary>
        public void RunDeviceBefore()
        {
			if (ambientCfg.DebugLevel == DebugMode.Simulate ||
				ambientCfg.DebugLevel == DebugMode.FailureDuringOperation)
			{
				msrmntTimeStamp = StateMachine.Time;
				return;
			}

            if (modbus.ReceivedTelegrams[ambientCfg.ModbusAddress].Count > 0)
            {
                byte[] telegram = modbus.ReceivedTelegrams[ambientCfg.ModbusAddress].Dequeue();

                if (telegram.Length == 13 && telegram[1] == 3 && telegram[2] == 8)
                {
                    int value = (int)telegram[3] * 256 + (int)telegram[4];
                    temperature = (float)value / 10.0f;

                    value = (int)telegram[5] * 256 + (int)telegram[6];
                    humidity = (float)value / 10.0f;

                    value = (int)telegram[9] * 256 + (int)telegram[10];
                    pressure = (float)value / 10000.0f;

                    msrmntTimeStamp = StateMachine.Time;
                    msrmntState = MsrmntState.Valid;
                    log.InfoFormat("Ambient: temperature = {0} C, humidity = {1} %, pressure = {2} mbar", temperature.ToString("F1"), humidity.ToString("F1"), (1000 * pressure).ToString("F0"));
                }
            }

            if ((StateMachine.Time % 10) == (ambientCfg.ModbusAddress % 10))      /// Each 10 seconds
            {
                /// Read four registers: 0x31, 0x32, 0x33, 0x34
                UInt16 regAddr = 0x0030;    /// register addr. = 0x31 (Modbus!)
                UInt16 count = 4;

                /// Prepare data to be sent
                byte[] msg = new byte[8];
                msg[0] = ambientCfg.ModbusAddress;
                msg[1] = 3;							/// CMD = Read registers
                msg[2] = (byte)(regAddr >> 8);		/// Control Word Hi
                msg[3] = (byte)(regAddr & 0xFF);	/// Control Word Lo
                msg[4] = (byte)(count >> 8);		/// Serial Com Reference Hi
                msg[5] = (byte)(count & 0xFF);		/// Serial Com Reference Lo

                modbus.SendMessage(msg);
            }
        }

        public void RunDeviceAfter() { }
        public void StopDevice() { }
		public void StopDevice2() { }


		///
		/// Boxes for the operation result
		///
		FloatBox tempBox;
		FloatBox pressureBox;
		FloatBox humiBox;

		public IOperation ReadAmbientOp(FloatBox temperature, FloatBox pressure, FloatBox humidity)
		{
			this.tempBox     = temperature;
			this.pressureBox = pressure;
			this.humiBox     = humidity;
			return this;
		}

		/// <summary>Start this operation</summary>
		public void Start()
		{
            if (tempBox     != null) tempBox.Val     = temperature;
            if (pressureBox != null) pressureBox.Val = pressure;
            if (humiBox     != null) humiBox.Val     = humidity;
        }

		/// <summary>Run this operation</summary>
		/// <returns>
		///		Event.FlowInDone or Event.FlowOutDone
		/// </returns>
		public Event Run()
		{
            if (tempBox     != null) tempBox.Val     = temperature;
            if (pressureBox != null) pressureBox.Val = pressure;
            if (humiBox     != null) humiBox.Val     = humidity;
            return Event.AmbientDone;
		}

		/// <summary>Stop this operation</summary>
		public void Stop()
		{
		}
	}
}