public static ParaService Install()
{
if (ps == null)
{
ps = new ParaService();
}
return(ps);
}
/// <summary>
/// 打开串口
/// </summary>
/// <returns></returns>
public SerialPort OpenPort(SerialPara serialPara)
{
if (ParaService.Install().GetPort().Length == 0)
{
MessageBox.Show("打开串口错误，本机没有串口！", "警告");
return(null);
}
if (!sp.IsOpen)
{
try
{
string port = serialPara.Port;
string baudRate = serialPara.BaudRate;
string dataBits = serialPara.DataBits;
string stopBits = serialPara.StopBit;
string parity = serialPara.Parity;
sp.PortName = port;
sp.BaudRate = int.Parse(baudRate);
sp.DataBits = int.Parse(dataBits);
sp.StopBits = (StopBits)int.Parse(stopBits);
switch (parity) //校验位
{
case "none":
sp.Parity = Parity.None;
break;
case "odd":
sp.Parity = Parity.Odd;
break;
case "even":
sp.Parity = Parity.Even;
break;
}
//sp.ReadTimeout = 1000;
//sp.WriteTimeout = 1000;
sp.ReceivedBytesThreshold = 1;
sp.DataReceived += new SerialDataReceivedEventHandler(comPort_DataReceived);
sp.Open();
return(sp);
}
catch (Exception ex)
{
MessageBox.Show("串口参数设置错误!" + ex.Message, "错误");
return(null);
}
}
return(sp);
}