import binascii
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# FLASH前16字节
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data = bytes.fromhex('55AA3C1002000000AB0D416900000000')
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print(f"Data: {data.hex().upper()}")
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print(f"Length: {len(data)} bytes")
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print()
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# 测试不同的CRC32配置
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print("CRC32 Results:")
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print("=" * 60)
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# 1. 初始值 0
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crc1 = binascii.crc32(data, 0) & 0xFFFFFFFF
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print(f"1. Init=0x00000000, No XOR: 0x{crc1:08X}")
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# 2. 初始值 0xFFFFFFFF
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crc2 = binascii.crc32(data, 0xFFFFFFFF) & 0xFFFFFFFF
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print(f"2. Init=0xFFFFFFFF, No XOR: 0x{crc2:08X}")
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# 3. 初始值 0，最终XOR 0xFFFFFFFF
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crc3 = (~binascii.crc32(data, 0)) & 0xFFFFFFFF
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print(f"3. Init=0x00000000, XOR=0xFFFFFFFF: 0x{crc3:08X}")
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# 4. 初始值 0xFFFFFFFF，最终XOR 0xFFFFFFFF (标准CRC32)
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crc4 = (~binascii.crc32(data, 0xFFFFFFFF)) & 0xFFFFFFFF
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print(f"4. Init=0xFFFFFFFF, XOR=0xFFFFFFFF: 0x{crc4:08X}")
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print("=" * 60)
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print()
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print("STM32配置应该是：")
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print(" - Polynomial: 0x04C11DB7 (标准CRC-32)")
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print(" - Init Value: 需要确认")
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print(" - Input Data Format: Bytes")
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print(" - Input Data Inversion: None")
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print(" - Output Data Inversion: Disable")
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