33 lines
669 B
Plaintext
33 lines
669 B
Plaintext
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def check_value(data: bytes) -> int:
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# 初始化crc为0xFFFF
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crc = 0xFFFF
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length = len(data)
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if length % 2 != 0:
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return 0
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for i in range(0, length, 2):
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val = data[i] * 256 + data[i + 1]
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crc = crc ^ val
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# 返回最终的crc值
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return crc
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def check(data: bytes) -> int:
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if len(data) < 2:
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return False
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# 初始化crc为0xFFFF
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crc = 0xFFFF
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length = len(data)
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if length % 2 != 0:
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return 0
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for i in range(0, length, 2):
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val = data[i] * 256 + data[i + 1]
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crc = crc ^ val
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# 返回最终的crc值
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if crc == 0 :
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return True
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return False
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