Data cache region, serial port communication data frame analysis method based on data cache region and automobile

The invention relates to the technical field of automobile control, and provides a data cache region, the data cache region comprises attributes of a cache region object cache, the attributes comprise capacity Capability, a current end point Limit, a current position Position and a position mark; and the capacity Capability represents the maximum data volume capable of being accommodated by the cache region object cache, the current end point Limit represents the data end point position of data stored in the current cache region object cache, the current position Position represents the next byte index to be read or written, and the position mark is used for marking the specified current position Position. 本发明涉及汽车控制技术领域，提供了一种数据缓存区，所述数据缓存区包：缓存区对象cache的属性，包括：容量Capacity、当前终点Limit、当前位置Position及位置标记Mark；容量Capacity表示缓存区对象cache可容纳的最大数据量，当前终点Limit表示当前缓存区对象cache内存储数据的数据终点位置，当前位置Position表示下一个要被读或写的字节索引，位置标记Mark用于标记指定的当前位置Position。