---

import sys

def fix_lattice_bitstream(input_file, output_file):
    # This is exactly how the preamble chunk looks in your file byte-by-byte
    # (LSC_PROG_CNT command 0x80 followed by the file's raw preamble bytes)
    TARGET_SIGNATURE = b'\x80\x00\x82\x91\x00\x20'
    
    with open(input_file, 'rb') as f:
        content = f.read()
        
    idx = content.find(TARGET_SIGNATURE)
    if idx == -1:
        print("Error: Target preamble signature not found in this specific .bit file!")
        sys.exit(1)
            
    # Include the 0x80 command and preamble into the execution payload
    bitstream = content[idx:]
    print(f"Preamble block detected at offset {idx}. Extracting configuration payload...")
    
    # Perform the mandatory hardware Byte Bit-Mirroring for Lattice Slave I2C port
    fixed_bytes = bytearray()
    for byte in bitstream:
        flipped = int('{:08b}'.format(byte)[::-1], 2)
        fixed_bytes.append(flipped)
        
    with open(output_file, 'wb') as f:
        f.write(fixed_bytes)
        
    print(f"Success! Generated clean I2C binary: {output_file}")

if __name__ == '__main__':
    if len(sys.argv) < 3:
        print("Usage: python3 lpc_convert.py <input.bit> <output.bin>")
        sys.exit(1)
    # ИСПРАВЛЕНО: Передаем конкретные элементы списка (индексы 1 и 2), а не весь список целиком!
    fix_lattice_bitstream(sys.argv[1], sys.argv[2])