一款非常好用的MTK串口打印工具，里面附带有自己写的接口函数-MTK a very useful tool for serial printer, which comes with its own interface function written

MTKCPU型号识别工具要安装串口驱动 手机选 序列接口 手机串口 等之类的选项-Model MTKCPU recognition tools to install mobile phone serial driver election serial interfaces such as mobile phones, such as serial port option

mtk测试工具、测试本地连接接口、安装在手机里就可以使用-mtk test tools, test the local connection interface