First, the printer acquaintance Fei Ngo Shan
Second, configure the printer
摁下灰色按钮，打开机盖：
放入小票：
不要放反了：
连接电源上，开启开关，单击设置按钮：
在点一次设置：
上面的2.4g为公司的无线网络，二维码扫描后输入密码即可连接成功：
Third, the registered background
添加打印机：
实名认证（两种方式，哪一种都可以开发）：
Fourth, the printer interface calls
api文档：http://www.feieyun.com/open/index.html
打印机必接的api：
1, Add Printer
① can add a printer by codes (bulk)
② can add a printer (once) through the background
I chose to add the background
2, the test print
download a sdk to:
调用wp_print方法，即可实现打印：
Fifth, put the project logic implemented
Scene: general takeaway is automatically printed after coming out of a small ticket orders and prompts: You have new orders, or orders from the background manually print the list
实现逻辑：
In order to generate the method, in the method of payment in the callback method can be called a printer that can be! According to the needs of your project.
