138 lines
3.5 KiB
C#
138 lines
3.5 KiB
C#
///
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/// Copyright (c) 2015 Sensus Metering Systems
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///
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.IO.Ports;
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using System.Text;
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using System.Threading;
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using log4net;
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using Config.Entities;
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using TBF.BenchControl.Generic;
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using TBF.Boxes;
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namespace TBF.BenchControl.Modbus.Common
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{
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/// <summary>
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/// Root component for Modbus communication via serial port (RS485)
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/// </summary>
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public class Modbus : ComponentBase, IDevice, GenericDevices.IModbus
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{
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private static readonly ILog log = LogManager.GetLogger(typeof(Modbus));
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public override string ToString() { return string.Format("Modbus({0})", Cfg.ToString(1)); }
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private readonly ModbusCfg modbusCommonCfg;
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/// Private fields
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SerialPort serialPort;
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Thread workerThread;
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bool stopWorkerThread;
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public Modbus()
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{
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}
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/// <summary>
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/// Ambient temperature / humidity / pressure meter 'Greco' connected via serial interface (RS232)
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/// Connection settings: 19200 Bd 8-bits No-parity 1-stop-bit Flow control: none or hardware.
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/// </summary>
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public Modbus(Generic.IComponentCfg cfg)
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: base(cfg)
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{
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serialPort = null;
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modbusCommonCfg = cfg as ModbusCfg;
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log.Debug(this.ToString());
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}
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~Modbus()
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{
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}
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public void Initialize()
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{
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if (modbusCommonCfg.DebugLevel == DebugMode.Simulate)
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{
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log.FatalFormat("Simulated device {0}", ToString());
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return;
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}
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string comPortName = "COM" + modbusCommonCfg.ComPortNr.ToString();
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serialPort = new SerialPort(comPortName, modbusCommonCfg.BaudRate, modbusCommonCfg.Parity, modbusCommonCfg.DataBits, modbusCommonCfg.StopBits);
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serialPort.Handshake = modbusCommonCfg.Handshake;
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serialPort.Open();
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//stopWorkerThread = false;
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//workerThread = new Thread(Worker);
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//workerThread.Start();
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log.FatalFormat("Successfully initialized device {0}", ToString());
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}
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/// <summary>
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/// Send a modbus message.
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/// This function calculates and overwrites the last 2 bytes
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/// of the message - CRC as specified in Modbus specification.
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/// </summary>
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/// <param name="message">Message incl CRC, CRC bytes dont have to be set</param>
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public void SendMessage(byte[] message)
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{
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if (modbusCommonCfg.DebugLevel == DebugMode.Simulate) return;
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Telegram.UpdateTelegramCRC(message);
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log.Debug(Telegram.LogTelegram("Sending message ", message));
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serialPort.Write(message, 0, message.Length);
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}
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void Worker()
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{
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while (!stopWorkerThread)
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{
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Thread.Sleep(250);
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if (stopWorkerThread) break;
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int nrBytes = serialPort.BytesToRead;
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if (nrBytes > 0)
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{
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char[] buffer = new char[nrBytes];
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serialPort.Read(buffer, 0, nrBytes);
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string s = Telegram.LogTelegram("Received: ", new string(buffer));
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/// ODO: Add handler
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//OnQuidoReceived(this, new QuidoReceivedEventArgs(s));
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}
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}
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}
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/// <summary>Run this device</summary>
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public void RunDeviceBefore()
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{
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int nrBytes = serialPort.BytesToRead;
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if (nrBytes > 0)
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{
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char[] buffer = new char[nrBytes];
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serialPort.Read(buffer, 0, nrBytes);
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string s = Telegram.LogTelegram("Received: ", new string(buffer));
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/// ODO: Add handler
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//OnQuidoReceived(this, new QuidoReceivedEventArgs(s));
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}
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}
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/// <summary>Run this device</summary>
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public void RunDeviceAfter()
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{
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}
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/// <summary>Stop this device</summary>
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public void StopDevice()
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{
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if (serialPort != null)
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{
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//stopWorkerThread = true;
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//workerThread.Join(2000);
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serialPort.Close();
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}
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}
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}
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}
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