58 lines
1.4 KiB
Python
58 lines
1.4 KiB
Python
#!/usr/bin/env python
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# -*-coding:utf-8 -*-
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'''
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# @Author ：幸运锦鲤
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# @Time : 2025-03-07 00:22:47
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# @version : python3
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# @Update time :
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# @Description : crc16校验码计算示例代码
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'''
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def crc16(data: str) -> str:
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# 将输入字符串按空格分割，并将每个部分转换为字节
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byte_list = [int(byte, 16) for byte in data.split()]
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# 计算CRC16校验码
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crc = 0xFFFF
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for b in byte_list:
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cur_byte = 0xFF & b
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for _ in range(0, 8):
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if (crc & 0x0001) ^ (cur_byte & 0x0001):
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crc = (crc >> 1) ^ 0xA001
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else:
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crc >>= 1
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cur_byte >>= 1
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# 将CRC16校验码转换为大端序（高位在前）
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crc = ((crc & 0xFF) << 8) | (crc >> 8)
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# 将CRC16校验码转换为两位十六进制字符串
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crc_high = (crc >> 8) & 0xFF
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crc_low = crc & 0xFF
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crc_str = f"{crc_high:02X}{crc_low:02X}"
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# 返回原始数据加上CRC16校验码的字符串（无空格）
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return f"{data.replace(' ', '')}{crc_str}"
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# 示例用法
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input_data = "01 03 00 00 00 01"
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result = crc16(input_data)
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print(result) # 输出: "010300000001840A"
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input_data = "07 04 00 00 00 02"
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result = crc16(input_data)
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print(result)
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input_data = "05 06 00 00 00 01"
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result = crc16(input_data)
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print(result)
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spaced_hex_str = ' '.join(result[i:i+2] for i in range(0, len(result), 2))
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print("result:",spaced_hex_str)
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