75 lines
2.3 KiB
C#
75 lines
2.3 KiB
C#
using Aitex.Core.Util;
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using MECF.Framework.Common.Communications;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace MECF.Framework.RT.EquipmentLibrary.HardwareUnits.Temps
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{
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public class SensorTempConnection : SerialPortConnectionBase
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{
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private List<byte> _lstCacheBuffer = new List<byte>();
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public SensorTempConnection(string portName) : base(portName, 115200, 8, System.IO.Ports.Parity.Even, System.IO.Ports.StopBits.One, "\r", false)
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{
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deviceTimer = new DeviceTimer();
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}
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public DeviceTimer deviceTimer;
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private int ErrorCount = 0;
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public override bool SendMessage(byte[] message)
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{
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deviceTimer.Start(1000);//每次发送前开始计时，超时接受不到\r提示
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_lstCacheBuffer.Clear();//每次发送前清除接收区缓存
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return base.SendMessage(message);
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}
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protected override MessageBase ParseResponse(byte[] rawMessage)
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{
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_lstCacheBuffer.AddRange(rawMessage);//持续添加通讯缓存
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//验证最后一位是不是结束符\r
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if (rawMessage[rawMessage.Length - 1] != 13)//byte 13 是字符串\r,SerialPortConnectionBase通讯中添加结束符\r
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return IsTimeOut() ? null : ReceiveTempMessage(false, _lstCacheBuffer.ToArray());
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Reset();//复位状态和计数
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return ReceiveTempMessage(true, _lstCacheBuffer.ToArray());
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}
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public bool IsTimeOut()
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{
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if (deviceTimer.IsTimeout())
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{
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deviceTimer.Stop();
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ErrorCount += 1;
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if (ErrorCount >= 5)
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return true;
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return false;
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}
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return false;
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}
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private void Reset()
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{
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ErrorCount = 0;
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deviceTimer.Stop();
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}
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private BinaryMessage ReceiveTempMessage(bool dataIsOK, byte[] bytes)
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{
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BinaryMessage msg = new BinaryMessage();
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msg.IsResponse = dataIsOK;
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msg.IsAck = dataIsOK;
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msg.IsComplete = dataIsOK;
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msg.RawMessage = bytes;
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return msg;
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}
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}
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}
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