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283 lines
8.7 KiB
283 lines
8.7 KiB
9 months ago
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace FangYar.IOT_DH_Plugin
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{
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public class CommonHelper
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{
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#region 公共方法数组操作
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/// <summary>
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/// CRC校验
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/// </summary>
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/// <param name="data">校验数据</param>
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/// <returns>高低8位</returns>
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public static string CRCCalc(string data)
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{
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string[] datas = data.Split(' ');
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List<byte> bytedata = new List<byte>();
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foreach (string str in datas)
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{
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bytedata.Add(byte.Parse(str, System.Globalization.NumberStyles.AllowHexSpecifier));
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}
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byte[] crcbuf = bytedata.ToArray();
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//计算并填写CRC校验码
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int crc = 0xffff;
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int len = crcbuf.Length;
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for (int n = 0; n < len; n++)
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{
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byte i;
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crc = crc ^ crcbuf[n];
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for (i = 0; i < 8; i++)
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{
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int TT;
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TT = crc & 1;
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crc = crc >> 1;
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crc = crc & 0x7fff;
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if (TT == 1)
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{
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crc = crc ^ 0xa001;
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}
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crc = crc & 0xffff;
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}
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}
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string[] redata = new string[2];
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redata[1] = Convert.ToString((byte)((crc >> 8) & 0xff), 16);
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redata[0] = Convert.ToString((byte)((crc & 0xff)), 16);
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return redata[0] + " " + redata[1];
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}
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public static ushort crc_16(byte[] data)
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{
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uint IX, IY;
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ushort crc = 0xFFFF;//set all 1
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int len = data.Length;
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if (len <= 0)
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crc = 0;
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else
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{
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len--;
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for (IX = 0; IX <= len; IX++)
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{
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crc = (ushort)(crc ^ (data[IX]));
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for (IY = 0; IY <= 7; IY++)
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{
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if ((crc & 1) != 0)
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crc = (ushort)((crc >> 1) ^ 0xA001);
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else
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crc = (ushort)(crc >> 1); //
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}
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}
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}
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byte buf1 = (byte)((crc & 0xff00) >> 8);//高位置
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byte buf2 = (byte)(crc & 0x00ff); //低位置
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crc = (ushort)(buf1 << 8);
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crc += buf2;
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return crc;
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}
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///<summary>
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/// 合并数组
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/// </summary>
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/// <param name="First">第一个数组</param>
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/// <param name="Second">第二个数组</param>
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/// <returns>合并后的数组(第一个数组+第二个数组，长度为两个数组的长度)</returns>
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public static byte[] MergerArray(byte[] First, byte[] Second)
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{
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byte[] result = new byte[First.Length + Second.Length];
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First.CopyTo(result, 0);
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Second.CopyTo(result, First.Length);
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return result;
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}
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/// <summary>
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/// 从数组中截取一部分成新的数组
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/// </summary>
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/// <param name="Source">原数组</param>
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/// <param name="StartIndex">原数组的起始位置</param>
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/// <param name="EndIndex">原数组的截止位置</param>
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/// <returns></returns>
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public static byte[] SplitArray(byte[] Source, int StartIndex, int EndIndex)
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{
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try
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{
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byte[] result = new byte[EndIndex - StartIndex + 1];
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for (int i = 0; i <= EndIndex - StartIndex; i++) result[i] = Source[i + StartIndex];
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return result;
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}
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catch (IndexOutOfRangeException ex)
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{
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throw new Exception(ex.Message);
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}
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}
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/// <summary>
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/// 截取byte[]
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/// </summary>
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/// <param name="bytes"></param>
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/// <returns></returns>
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public static byte[] byteToData(byte[] bytes, int length)
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{
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byte[] bdata = new byte[length];
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try
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{
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if (bytes != null)
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{
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for (int i = 0; i < bytes.Length; i++)
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{
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bdata[i] += bytes[i];
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}
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}
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}
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catch (Exception e) { }
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return bdata;
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}
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/// <summary>
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/// 截取byte[]
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/// </summary>
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/// <param name="bytes"></param>
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/// <returns></returns>
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public static byte[] byteToData(byte[] bytes, int satrt, int end)
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{
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int length = end - satrt + 1;
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byte[] bdata = new byte[length];
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try
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{
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if (bytes != null)
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{
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for (int i = satrt; i <= end; i++)
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{
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bdata[i] += bytes[i];
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}
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}
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}
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catch (Exception e) { }
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return bdata;
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}
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// 16进制字符串转字节数组 格式为 string sendMessage = "00 01 00 00 00 06 FF 05 00 64 00 00";
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public static byte[] HexStrTobyte(string hexString)
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{
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hexString = hexString.Replace(" ", "");
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if ((hexString.Length % 2) != 0)
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hexString += " ";
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byte[] returnBytes = new byte[hexString.Length / 2];
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for (int i = 0; i < returnBytes.Length; i++)
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returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2).Trim(), 16);
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return returnBytes;
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}
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// 字节数组转16进制字符串
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public static string byteToHexStr(byte[] bytes)
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{
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string returnStr = " ";
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if (bytes != null)
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{
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for (int i = 0; i < bytes.Length; i++)
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{
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returnStr += bytes[i].ToString("X2") + " ";//ToString("X2") 为C#中的字符串格式控制符
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}
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}
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return returnStr.Trim(' ');
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}
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/// <summary>
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/// byte转int
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/// </summary>
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/// <param name="src"></param>
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/// <param name="offset"></param>
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/// <returns></returns>
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public static int bytesToInt(byte[] src, int offset)
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{
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int value;
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value = (int)((src[offset] & 0xFF)
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| ((src[offset + 1] & 0xFF) << 8)
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| ((src[offset + 2] & 0xFF) << 16)
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| ((src[offset + 3] & 0xFF) << 24));
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return value;
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}
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/// <summary>
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/// byte转int
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/// </summary>
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/// <param name="bytes"></param>
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/// <returns></returns>
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public static int bytesToInt(byte[] bytes)
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{
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try
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{
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string str = "";
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for (int i = bytes.Length - 1; i >= 0; i--)
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{
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str += bytes[i].ToString("X2");
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}
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return Convert.ToInt32(str, 16);
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}
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catch (Exception ex) { return 0; }
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}
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/// <summary>
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/// 校验和计算
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/// </summary>
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/// <param name="bs"></param>
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/// <returns></returns>
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public static int CalcSum(byte[] bs)
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{
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int num = 0;
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//所有字节累加
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for (int i = 0; i < bs.Length; i++)
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{
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num = num + bs[i];
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}
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byte ret = (byte)(num & 0xff);//只要最后一个字节
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return ret;
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}
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/// <summary>
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/// 将数据转换成byte[]数组
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/// </summary>
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/// <param name="code"></param>
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/// <returns></returns>
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public static byte[] Base64tobytes(string code)
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{
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return Convert.FromBase64String(code);
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}
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/// <summary>
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/// 将数据转换成byte[]数组
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/// </summary>
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/// <param name="code"></param>
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/// <returns></returns>
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public static string UnBase64String(byte[] bytes)
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{
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try {
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return Convert.ToBase64String(bytes);
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}
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catch (Exception ex) { return ""; }
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}
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/// <summary>
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/// 将byte[]数组转换成日期
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/// </summary>
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/// <param name="bytes"></param>
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/// <returns></returns>
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public static DateTime BytestoDateTime(byte[] bytes)
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{
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string timestr = "20" + bytes[5].ToString("00") + "/" + bytes[4].ToString("00") + "/" + bytes[3].ToString("00") + " " + bytes[2].ToString("00") + ":" + bytes[1] + ":" + bytes[0];
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return Convert.ToDateTime(timestr);
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}
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#endregion
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}
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}
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