此程序为GPS接收机的源码，包括捕获、跟踪、定位解算和算法，以及NMEA协议，其硬件基于gp2015和gp2021,操作系统为linux，处理器为arm7,对理解GPS接收机原理有很大帮助．-This procedure source for GPS receiver, including the capture, tracking, positioning solvers and algorithms, as well as the NMEA protocol, and its hardwar

Android系统DMA的头文件，可以帮助理解Linux对存储器的管理-DMA Android system header files, can help to understand the memory management of Linux

linux下的串口通信程序详解,给出测试程序来理解linux下的串口操作流程，例程receive.c用来接收从串口发来的数据，而例程send.c用来发送数据到串口。二者成功建立串口连接后，串口接收端会收到串口发送端发来的字符串数据“Hello，this is a Serial Port test!”。-serial communication program under linux Detailed test procedure is given to understand that under