说明：  25LP发送命令，读取当前的方位信息，根据方位信息数据结构的特点，接收GPS模块送入单片机串口的经度数据，关于纬度数据的接收，程序实现代码结构和经度数据接收程序代码类似处理即可。
(25LP send commands, read the current location information, location information data structure according to the characteristics of the module into the microcontroller serial port to receive GPS longitude data, receiving data on the latitude, longitude procedures to achieve the code structure and code data receiving similar treatment can be .)