Abstract:

A model of network driver in embedded system is proposed with emphasis on its function.There is an abstract midlayer between the network protocols and network drivers,which separates the upper layer network protocols from network drivers effectively,thus making concrete network drivers detail transparent to network protocols.The midlayer is an abstract layer of network driver,which supports driver function abstraction while supporting command exchange between the network protocols upper layer and drivers.The cost of network driver designing is decreased because of the midlayer.The validation and testing experiments are carried out.The results show that of network drivers in embedded system designed based on this model work correctly and reliably with normal network communication.

Key words: embedded system;model of network driver;design and realization