WX记录模块 硬件相关

1 看门狗问题

复位，上电顺序，与看门狗往往联系在一起
http://blog.sina.com.cn/s/blog_6bd4f1170102wwfa.html
https://blog.youkuaiyun.com/qq_42826337/article/details/84580737

https://blog.youkuaiyun.com/qq_42826337/article/details/84659916