22 lines
506 B
Lua
22 lines
506 B
Lua
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function modbuscrc16(str)
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local flag=0xFFFF
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local temp=0xFFFF
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for i=1, string.len(str) do
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temp=temp~string.byte(str,i)
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for j=1, 8 do
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flag=temp&0x0001
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temp=temp>>1
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if (flag>0)
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--if LSB is set, XOR is 0xA001
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then temp =temp ~ 0xA001
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end
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end
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end
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--高低字节顺序对换
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temp = ((temp << 8)&0xFF00) | (temp >> 8);
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--返回4字节hex string
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return string.format("%04X",temp)
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end
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return uartData..modbuscrc16(uartData):fromHex()
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