using System;
using System.Collections.Generic;
using System.IO.Ports;
using System.Linq;
using System.Text;

namespace Lskj.Util
{


    public static class SerialPortProgram
    {
        private static SerialPort port = new SerialPort();
        private static bool isHex = false;
        public static string strReceiveMessage = string.Empty;


        //创建串口
        public static void establish(List<string> paramList)
        {
            strReceiveMessage = string.Empty;
            port.BaudRate = Convert.ToInt32(paramList[1]+"");
            port.DataBits = Convert.ToInt32(paramList[2] + "");
            port.StopBits = (StopBits)Convert.ToInt32(paramList[3] + "");
            port.Parity = (Parity)Convert.ToInt32(paramList[4] + "");
            var portName = paramList[5] + "";
            if (null != portName)
                port.PortName = portName;


        }

        //打开串口
        public static void Open()
        {
            try
            {
                port.Open();//打开串口
                port.DtrEnable = true;//设置DTR为高电平
                port.RtsEnable = true;//设置RTS位高电平
            }
            catch (Exception ex)
            {
                //打开串口出错

            }
            port.DataReceived -= new SerialDataReceivedEventHandler(sp1_IsLegal_DataReceived);
            port.DataReceived += new SerialDataReceivedEventHandler(sp1_IsLegal_DataReceived);
        }


        //关闭
        public static void Close() {
            strReceiveMessage = string.Empty;
            port.Close();
        }





        /// <summary>
        /// 串口接收数据
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private  static void sp1_IsLegal_DataReceived(object sender, SerialDataReceivedEventArgs e)
        {
            // Thread.Sleep(500);
            string strReceiveMessage = string.Empty;
            Byte[] receivedData = new Byte[port.BytesToRead];        //创建接收字节数组
            port.Read(receivedData, 0, receivedData.Length);         //读取数据
            port.DiscardInBuffer();
            //清空SerialPort控件的Buffer

            if (isHex)
            {
                for (int i = 0; i < receivedData.Length; i++)
                {
                    strReceiveMessage += receivedData[i].ToString("X2");  //16进制显示  
                }
            }
            else
            {
                strReceiveMessage = Encoding.ASCII.GetString(receivedData);
            }


            //264C1830302E306B670D0A
            //wn000000.0kg
        }


    }
}