基于Marlin1.1.0的开源版本增加了Serial1串口，来实现双串口信号输入输出，方便接入触摸屏控制而不受原架构Serial0的局限和干扰
The open source version of Marlin1.1.0 adds Serial1 serial port to realize dual serial port signal input and output, which is easy to access touch screen control without the limitation and interference of the original architecture Serial0 (2017-11-23, WINDOWS, 1695KB, 下载2次)