软件设计阶段 meaning in English

software design phase

The stage of hardware designing : chose sdram and flash as the physical storage of this system ; designing and realizing sdram circuit , flash circuit , watchdog circuit , rtc circuit , serial communication circuit , networking communication circuit ; the stage of software designing : designing the bootloader program with the function of downloading file with tftp protocol , flash writing and reading , serial communication , booting linux kernel and so on ; transplanting the linux 2 . 4 kernel on this hardware system ; designing and realizing linux driver and give a detail of rtc and wdt drivers ’ designing and realization
软件设计阶段:针对本系统应用环境设计了有tftp文件下载、 flash读写、串口通信、 linux内核引导等功能的bootloader程序;通过修改linux2 . 4内核源码中针对硬件平台部分代码,完成了内核linux2 . 4到本平台的移植;驱动设计部分实现了实时时钟、看门狗、串口、网口等硬件在本系统linux2 . 4平台下的驱动程序,文中详细的介绍了实时时钟和看门狗驱动实现,特别介绍了看门狗模块中i2c协议的软件实现。