（为了能下载，真不舍得）一个非常详细的串口开发例程。详细讲述了串口通信协议的编制，数据校验的实现。-(In order to be able to download, I really can not blame them) a very detailed routine serial development. Detailed account of the serial communication protocol preparation, data validation implementa

BREW平台下的DNF游戏，实现简单的刷怪升级-The BREW platform DNF game, implement a simple brush blame upgrade