using System;
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using System.Diagnostics;
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using System.IO.Ports;
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namespace Bro.Common.Link
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{
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/// <summary>
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/// 串口连接
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/// </summary>
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public class SerialLink : LinkBase
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{
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// 默认串口号
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public const int DFT_PORT = 1;
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// 默认波特率
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public const int DFT_BAUD_RATE = 9600;
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// 串口号
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public int Port { get;set;}
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// 波特率
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public int BaudRate { get;set;}
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// 串口连接
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private SerialPort SerialPort = new SerialPort();
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public SerialLink()
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{
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IsConn = false;
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Port = DFT_PORT;
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BaudRate = DFT_BAUD_RATE;
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}
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/// <summary>
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/// 打开串口连接
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/// </summary>
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/// <returns></returns>
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public override bool Open()
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{
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if ( SerialPort.IsOpen )
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{
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return true;
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}
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try
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{
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SerialPort.PortName = "COM" + this.Port;
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SerialPort.BaudRate = this.BaudRate;
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SerialPort.WriteBufferSize = this.SendBuffLen;
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SerialPort.ReadBufferSize = this.RecvBuffLen;
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SerialPort.Open();
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base.IsConn = true;
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return true;
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}
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catch(Exception ex)
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{
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Trace.TraceError("SerialLink:{0} Open fail, ex:{1}-{2}", this.Desp, ex.Message, ex.StackTrace);
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}
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return false;
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}
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/// <summary>
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/// 关闭串口连接
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/// </summary>
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public override void Close()
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{
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try
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{
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if ( !SerialPort.IsOpen )
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{
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return;
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}
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SerialPort.Close();
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}
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catch(Exception ex)
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{
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Trace.TraceError("SerialLink:{0} Close fail, ex:{1}-{2}", this.Desp, ex.Message, ex.StackTrace);
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}
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}
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/// <summary>
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/// 销毁
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/// </summary>
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public override void Fnit()
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{
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Close();
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}
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/// <summary>
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/// 接收数据
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/// </summary>
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/// <param name="rcvBuf"></param>
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/// <param name="bufLen"></param>
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/// <returns></returns>
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public override int Recv(byte[] rcvBuf, int offset)
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{
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int rcvLen = -1;
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if ( null == rcvBuf )
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{
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return -1;
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}
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try
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{
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var len = rcvBuf.Length - offset;
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if ( len <= 0 )
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{
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return -1;
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}
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rcvLen = SerialPort.Read(rcvBuf, offset, len);
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}
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catch(Exception ex)
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{
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Trace.TraceError("SerialLink:{0} Recv fail, ex:{1}-{2}", this.Desp, ex.Message, ex.StackTrace);
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}
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return rcvLen;
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}
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/// <summary>
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/// 发送数据
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/// </summary>
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/// <param name="sndBuf"></param>
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/// <param name="offset"></param>
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/// <returns></returns>
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public override bool Send(byte[] sndBuf, int offset, int len)
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{
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if ( null == sndBuf )
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{
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return false;
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}
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try
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{
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SerialPort.Write(sndBuf, offset, len);
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return true;
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}
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catch(Exception ex)
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{
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Trace.TraceError("SerialLink:{0} Send fail, ex:{1}-{2}", this.Desp, ex.Message, ex.StackTrace);
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}
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return false;
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}
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}
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}
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