! @brief Convert a word array into a byte array

def u32le_list_to_byte_list(data):
    """! @brief Convert a word array into a byte array"""
    res = []
    for x in data:
        res.append((x >> 0) & 0xff)
        res.append((x >> 8) & 0xff)
        res.append((x >> 16) & 0xff)
        res.append((x >> 24) & 0xff)
    return res