大名顶顶的gpsd，很多开源软件都用的，与gps硬件进行通讯-顶顶name of gpsd, a lot of open source software are used with the gps hardware communications

本程序使用SPORT0的auto buffer特性传输存储在trans_data数组中的数据，并且通过loop back 接收相同的数据。(This program transmits the data which is in the array trans_data, using the auto buffer feature of SPORT0 & receives the same data through the l