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@ -337,8 +337,9 @@ namespace XCoder.Tools |
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var buf = GetSource(); |
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//rtResult.Text = "{0:X4}\r\n{0}".F(buf.Crc16());
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var rs = buf.Crc16(); |
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buf = rs.GetBytes(false); |
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SetResult("/*数字、HEX编码、Base64编码*/", rs + "", buf.ToHex(), buf.ToBase64()); |
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var data = rs.GetBytes(false); |
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var mcrc = Modbus_CRC(buf, 0, buf.Length); |
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SetResult("/*数字、HEX编码、Base64编码、Modbus-Crc*/", rs + "", data.ToHex(), data.ToBase64(), mcrc.GetBytes().ToHex("-")); |
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} |
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private void btnDES_Click(Object sender, EventArgs e) |
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@ -734,5 +735,33 @@ namespace XCoder.Tools |
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//return sb.ToString().Trim();
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} |
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#endregion
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#region Modbus_CRC
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private static readonly UInt16[] crc_ta = new UInt16[16] { 0x0000, 0xCC01, 0xD801, 0x1400, 0xF001, 0x3C00, 0x2800, 0xE401, 0xA001, 0x6C00, 0x7800, 0xB401, 0x5000, 0x9C01, 0x8801, 0x4400, }; |
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/// <summary>Crc校验</summary>
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/// <param name="data"></param>
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/// <param name="offset">偏移</param>
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/// <param name="count">数量</param>
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/// <returns></returns>
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public static UInt16 Modbus_CRC(Byte[] data, Int32 offset, Int32 count = -1) |
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{ |
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if (data == null || data.Length < 1) return 0; |
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UInt16 u = 0xFFFF; |
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Byte b; |
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if (count == 0) count = data.Length - offset; |
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for (var i = offset; i < count; i++) |
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{ |
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b = data[i]; |
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u = (UInt16)(crc_ta[(b ^ u) & 15] ^ (u >> 4)); |
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u = (UInt16)(crc_ta[((b >> 4) ^ u) & 15] ^ (u >> 4)); |
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} |
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return u; |
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} |
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#endregion
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} |
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} |
大石头
4 years ago