IotCloudPlatform/IoTIntegrationPlatform/IoTIntegrationPlatform.Common/DeviceHelper.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using static IoTIntegrationPlatform.Model.Enum.EnumDevice;

namespace IoTIntegrationPlatform.Common
{
    /// <summary>
    /// 设备公共类
    /// </summary>
    public static class DeviceHelper
    {
        /// <summary>
        /// 计算时间差及返回当前状态
        /// </summary>
        /// <param name="oldState"></param>
        /// <param name="currentTime"></param>
        /// <param name="value"></param>
        /// <param name="changeState"></param>
        /// <returns></returns>
        public static bool CalcTimeDifference(EnumDeviceStatus oldState, DateTime currentTime, DateTime value, ref EnumDeviceStatus changeState)
        {
            bool isTrue = false;
            try
            {
                if (currentTime != null && value != null)
                {
                    double minutes = TimeHelper.DiffMinutes(value, currentTime);
                    if (minutes >= 2 && oldState == EnumDeviceStatus.Open)
                    {
                        isTrue = true;
                        changeState = 0;//离线
                    }
                    else if (minutes < 3 && oldState == 0)
                    {
                        isTrue = true;
                        changeState = EnumDeviceStatus.Open;//在线
                    }
                }
            }
            catch (Exception ex)
            {
                Logging.Error(ex, ex.Message);
            }
            return isTrue;
        }

        /// <summary>
        /// 生成网关设备的mac地址
        /// </summary>
        /// <param name="serialNumber">设备序列号 32位  </param>
        /// <returns></returns>
        public static string GenerateDeviceMacAddress(string serialNumber)
        {
            string macAddress = string.Empty;
            try
            {
                // 制造商标识符
                string manufacturerId = "0123456789ABCDEF"; // 24位

                // 将字符串转换为字节数组  
                byte[] manufacturerBytes = new byte[6];
                byte[] serialBytes = new byte[6];
                for (int i = 0; i < 6; i++)
                {
                    manufacturerBytes[i] = Convert.ToByte(manufacturerId.Substring(i * 2, 2), 16);
                    serialBytes[i] = Convert.ToByte(serialNumber.Substring(i * 2, 2), 16);
                }

                // 按位或（|）制造商标识符和序列号，得到完整的MAC地址  
                byte[] macBytes = new byte[6];
                for (int i = 0; i < 6; i++)
                {
                    macBytes[i] = (byte)(manufacturerBytes[i] | serialBytes[i]);
                }

                // 将MAC地址转换为16进制字符串并打印出来  
                StringBuilder sb = new StringBuilder();
                for (int i = 0; i < 6; i++)
                {
                    sb.Append(macBytes[i].ToString("X2")); // 使用"X2"格式将字节转换为两位的16进制数字，不足两位的会在前面补0  
                    if (i < 5) sb.Append(":"); // 每两个字节之间添加一个短横线"-"  
                }
                macAddress = sb.ToString();
            }
            catch (Exception ex)
            {
                Logging.Error(ex, ex.Message);
            }
            return macAddress;

        }


    }
}