def calculate_frame_lengths(file_content):
    # 将文件内容转换为十六进制字节列表
    hex_data = file_content.split()
    
    frame_lengths = []
    frame_start = 0
    
    # 遍历字节列表，查找帧头
    for i in range(len(hex_data) - 1):
        if hex_data[i] == '55' and hex_data[i + 1] == 'AA':
            # 找到帧头，计算当前帧的长度
            if frame_start != 0:
                frame_length = i - frame_start
                frame_lengths.append(frame_length)
            frame_start = i
    
    # 处理最后一帧
    if frame_start != 0:
        frame_length = len(hex_data) - frame_start
        frame_lengths.append(frame_length)
    
    return frame_lengths

# 读取文件内容
with open('serial_data.txt', 'r') as file:
    file_content = file.read()

# 计算每一帧的长度
frame_lengths = calculate_frame_lengths(file_content)

# 输出每一帧的长度
for i, length in enumerate(frame_lengths):
    print(f"Frame {i + 1}: Length = {length} bytes")