forked from tangger/lerobot
58 lines
2.3 KiB
Python
58 lines
2.3 KiB
Python
def crc8_maxim(data):
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"""
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使用CRC-8/MAXIM算法计算CRC8校验值
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多项式：X8+X5+X4+1=0x31
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Args:
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data: 要校验的字节数据
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Returns:
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计算出的CRC8校验值
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"""
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# CRC8表（与您提供的表相同）
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CRC8TAB = [
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0x00, 0x31, 0x62, 0x53, 0xC4, 0xF5, 0xA6, 0x97,
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0xB9, 0x88, 0xDB, 0xEA, 0x7D, 0x4C, 0x1F, 0x2E,
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0x43, 0x72, 0x21, 0x10, 0x87, 0xB6, 0xE5, 0xD4,
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0xFA, 0xCB, 0x98, 0xA9, 0x3E, 0x0F, 0x5C, 0x6D,
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0x86, 0xB7, 0xE4, 0xD5, 0x42, 0x73, 0x20, 0x11,
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0x3F, 0x0E, 0x5D, 0x6C, 0xFB, 0xCA, 0x99, 0xA8,
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0xC5, 0xF4, 0xA7, 0x96, 0x01, 0x30, 0x63, 0x52,
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0x7C, 0x4D, 0x1E, 0x2F, 0xB8, 0x89, 0xDA, 0xEB,
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0x3D, 0x0C, 0x5F, 0x6E, 0xF9, 0xC8, 0x9B, 0xAA,
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0x84, 0xB5, 0xE6, 0xD7, 0x40, 0x71, 0x22, 0x13,
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0x7E, 0x4F, 0x1C, 0x2D, 0xBA, 0x8B, 0xD8, 0xE9,
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0xC7, 0xF6, 0xA5, 0x94, 0x03, 0x32, 0x61, 0x50,
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0xBB, 0x8A, 0xD9, 0xE8, 0x7F, 0x4E, 0x1D, 0x2C,
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0x02, 0x33, 0x60, 0x51, 0xC6, 0xF7, 0xA4, 0x95,
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0xF8, 0xC9, 0x9A, 0xAB, 0x3C, 0x0D, 0x5E, 0x6F,
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0x41, 0x70, 0x23, 0x12, 0x85, 0xB4, 0xE7, 0xD6,
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0x7A, 0x4B, 0x18, 0x29, 0xBE, 0x8F, 0xDC, 0xED,
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0xC3, 0xF2, 0xA1, 0x90, 0x07, 0x36, 0x65, 0x54,
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0x39, 0x08, 0x5B, 0x6A, 0xFD, 0xCC, 0x9F, 0xAE,
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0x80, 0xB1, 0xE2, 0xD3, 0x44, 0x75, 0x26, 0x17,
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0xFC, 0xCD, 0x9E, 0xAF, 0x38, 0x09, 0x5A, 0x6B,
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0x45, 0x74, 0x27, 0x16, 0x81, 0xB0, 0xE3, 0xD2,
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0xBF, 0x8E, 0xDD, 0xEC, 0x7B, 0x4A, 0x19, 0x28,
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0x06, 0x37, 0x64, 0x55, 0xC2, 0xF3, 0xA0, 0x91,
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0x47, 0x76, 0x25, 0x14, 0x83, 0xB2, 0xE1, 0xD0,
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0xFE, 0xCF, 0x9C, 0xAD, 0x3A, 0x0B, 0x58, 0x69,
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0x04, 0x35, 0x66, 0x57, 0xC0, 0xF1, 0xA2, 0x93,
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0xBD, 0x8C, 0xDF, 0xFE, 0x79, 0x48, 0x1B, 0x2A,
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0xC1, 0xF0, 0xA3, 0x92, 0x05, 0x34, 0x67, 0x56,
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0x78, 0x49, 0x1A, 0x2B, 0xBC, 0x8D, 0xDE, 0xEF,
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0x82, 0xB3, 0xE0, 0xD1, 0x46, 0x77, 0x24, 0x15,
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0x3B, 0x0A, 0x59, 0x68, 0xFF, 0xCE, 0x9D, 0xAC
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]
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crc = 0
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for byte in data:
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crc = CRC8TAB[crc ^ byte]
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return crc
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# 数据帧：55 AA 02 00 00 67
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data = bytes([0x55, 0xAA, 0x08, 0x00, 0x02])
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crc = crc8_maxim(data)
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print(f"计算出的CRC8校验值: 0x{crc:02X}") |