using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO.Ports;

namespace MOTINOVA_Motor_Factory_Set
{
    public partial class PortSettings : Form
    {
        #region 串口相关变量

        private bool Listening = false;// 侦听串口是否是接收数据标志位
        public static string m_strDataBits = "8";
        public static string m_strStopBits = "1";
        public static string m_strCheckBits = "None";
        public static string m_strBaudrate = "115200";
        public bool g_blnIsOpen = false;

        #endregion
        public PortSettings()
        {
            InitializeComponent();
        }

        private void PortSettings_Load(object sender, EventArgs e)
        {
            #region 端口刷新
            string[] ports = SerialPort.GetPortNames();
            Array.Sort(ports);
            comboBox_ComIndex.Items.AddRange(ports);
            comboBox_ComIndex.SelectedIndex = comboBox_ComIndex.Items.Count > 0 ? 0 : -1;
            #endregion
        }
        #region 打开或关闭串口
        private void button_ComOpen_Click(object sender, EventArgs e)
        {
            try
            {
                if (!serialPort1.IsOpen)
                {
                    serialPort1.PortName = comboBox_ComIndex.Text;
                    serialPort1.BaudRate = int.Parse(m_strBaudrate);
                    serialPort1.Parity = (Parity)Enum.Parse(typeof(Parity), m_strCheckBits);
                    serialPort1.DataBits = Int32.Parse(m_strDataBits);
                    serialPort1.StopBits = (StopBits)Enum.Parse(typeof(StopBits), (m_strStopBits == "1.5") ? "3" : m_strStopBits);
                    serialPort1.Open();
                    comboBox_ComIndex.Enabled = false;
                    button_ComOpen.Text = "断开";
                    g_blnIsOpen = true;
                    
                }
                else
                {
                    while (Listening) Application.DoEvents();
                    //打开时点击，则关闭串口
                    serialPort1.Close();
                    comboBox_ComIndex.Enabled = true;
                    button_ComOpen.Text = "连接";
                    g_blnIsOpen = false;
                }
            }
            catch (System.Exception ex)
            {
                MessageBox.Show(ex.Message);
                return;
            }
            this.Hide();
        }
        #endregion

        #region 串口数据接收
        private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
        {
            try
            {
                Listening = true;

                int n = serialPort1.BytesToRead;
                byte[] buf = new byte[n];//将一次串口事件中接收到的数据暂存于buf中（注：对于超过8个字节的数据，C#的
                //串口接收事件将按每次处理8个字节的方式多次处理
                serialPort1.Read(buf, 0, n);//将接收到的数据读入buf

                this.Invoke((EventHandler)delegate
                {

                });

                ImportForm.buffer.AddRange(buf);//将读取的数据放入buffer中
                CheckForm.buffer.AddRange(buf);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
                return;
            }
            finally
            {
                Listening = false;
            }
        }
        #endregion
    }
}