openwrt 串口操作

http://blog.youkuaiyun.com/li6727975/article/details/42083099

http://www.openwrt.org.cn/bbs/thread-16612-1-1.html

http://bbs.eeworld.com.cn/thread-448545-1-1.html

http://blog.youkuaiyun.com/yfykisssky/article/details/45817971

http://blog.youkuaiyun.com/hosea1008/article/details/43778077

http://blog.youkuaiyun.com/kellygod/article/details/50730712

http://blog.youkuaiyun.com/w282529350/article/details/7378388