w mx
于之前基础上增加功能：py启动后输入缩放比例，十秒内未输入，则初始化后重启py，方可按默认设置执行
Dependencies: MQTT SDFileSystem WIZnet_Library mbed
Fork of
Laser_SD_W5500
by 
YX ZHANG
Revisions of main.cpp
| Revision | Date | Message | Actions |
|---|---|---|---|
| 1:9689429a0a29 | 2017-08-25 | print DHCP | File Diff Annotate |
| 0:1170747a672f | 2017-08-25 | STM32 + W5500 + MQTT | File Diff Annotate |