本代码是先了stc15系列的双串口，使用者能够通过这段代码实现串口透传。-This code is the first stc15 series double serial interface, the user can realize serial port through this code passthrough.

STC15系列单片机库函数大全,开发STC15系列单片机得力助手-STC15 MCU library function Guinness, MCU development STC15 assistant

基于STC15系列单片机通过硬件SPI接口驱动ILI9341主控的彩色液晶屏，带有中英文显示，多种字体(STC15 series microcontroller based on the hardware SPI interface to drive the ILI9341 control of the color LCD screen, with Chinese and English display, a variety of fonts)

利用stc15管脚切换的方式，实现双串口通信(The double serial communication is realized by the way of stc15 pin switching)