本实验将实现如下功能：通过串口2连接ATK-NEO-6M GPS模块，然后通过液晶显示GPS信息，包括精度、纬度、高度、速度、用于定位的卫星数、可见卫星数、UTC时间等信息。同时，可以通过USMART工具，设置GPS模块的刷新速率（最大支持5Hz刷新）和时钟脉冲的配置。另外，通过KEY0按键，可以开启或关闭NMEA数据的上传（即输出到串口1，方便开发调试）。-The experiment will achieve the following functions: connection through the serial port 2 ATK-NEO-6M GPS module and GPS information through the LCD display, including accuracy, latitude, altitude, speed, number of satellites used for positioning, the number of visible satellites, UTC time information . Meanwhile, you can USMART tool, set the refresh rate GPS module (maximum support 5Hz refresh) configuration and clock pulse. In addition, through KEY0 button, you can turn on or off to upload NMEA data (ie the output to the serial port 1, to facilitate development and debugging).