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35 lines
850 B
35 lines
850 B
8 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 Guidaoji
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{
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internal class ModbusCRC16
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{
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public static ushort CalculateCrc(byte[] bytes)
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{
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const ushort polynomial = 0xA001;
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ushort crc = 0xFFFF;
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for (int i = 0; i < bytes.Length; i++)
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{
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crc ^= (ushort)(bytes[i] & 0xFF);
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for (int j = 0; j < 8; j++)
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{
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if ((crc & 0x0001) == 0x0001)
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{
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crc >>= 1;
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crc ^= polynomial;
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}
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else
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{
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crc >>= 1;
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}
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}
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}
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return crc;
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}
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}
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}
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