基于一个实时内核的嵌入式Internet技术的研究与实现

基于微内核体系结构的思想，从嵌入式系统开发Internet应用的角度，提出一个实时内核-Webitx的软件体系结构及设计方案。为支持嵌入式Internet环境下的复杂应用，WebitX被设计成一个基于优先级的抢占式多任务内核，解决了任务调度、任务间同步与通信、定时管理、网络协议处理等主要问题，为嵌入式Internet应用提供了完备的系统服务，确保了嵌入式Internet应用的实时性和可靠性。为实现嵌入式设备与Internet的互联，WebitX提供了一个嵌入式TCP／IP协议栈，该协议栈在嵌入式系统资源受限的条件下，采用模块化的方法实现了TCP／IP协议簇的一个功能子集，为传统设备提供了网络接口，从而实现了高效的嵌入式Internet通信。

Research and Design of Embedded Internet Technology Based on a Real-Time Kernel

A real-time kernel-WebitX's architecture and design scheme with microkernel architecture is proposed from the viewpoint of development Internet applications in embedded system. In order to support complicated applications under embedded Internet environment. WebitX is designed a multitask preemptive kernel based on priority. To guarantee the timeliness and reliability of embedded Internet applications.such system services as task scheduling, synchronization and communication between tasks, timer management and network protocol are provided by WebitX. An embedded TCP/IP stack is provided by WebitX to realize devices linked to Internet and partial functions of TCP/IP suite are implemented using a modular solution with the limit of hardware resource. A network interface for traditional devices is provided by this stack and accordingly efficient embedded Internet communication is achieved.