这个文档是基于GPS的串口通信，可以实时采集GPS数据并保存，比如说GPS的经纬度，UTC时间与日期等。里面包含了许多经典的代码，可供初学者学习-This document is based on GPS, serial communication, real-time GPS data collected and saved, such as GPS latitude and longitude, UTC time and date. Which contains a number of cl