本文介紹了基于S3C4510B 和嵌入式操作系統(tǒng)uClinux 的HDLC 接口驅動的設計與實現(xiàn)。采取將HDLC 接口向內核注冊為Ethernet 設備，并在驅動中完成Ethernet 與HDLC協(xié)議間轉換的設計方案，實現(xiàn)了數(shù)據(jù)在Ethernet 和HDLC 接口間的高效轉發(fā)。對驅動編寫中的HDLC 設備的初始化、DMA 模式下的數(shù)據(jù)發(fā)送、接收過程和中斷處理進行了較為詳細的介紹。該方案已在實際的衛(wèi)星通信系統(tǒng)中應用，取得了良好的效果。
關鍵詞：S3C4510B；uClinux；HDLC；設備驅動；協(xié)議轉換

Design and Implementation of HDLC Device Driver Based on S3C4510B and uClinux
LIU Peng, JIN Ye (School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China) Abstract：A design and implementation of HDLC device driver based on the S3C4510B and uClinux is presented. By registering the HDLC device to the uClinux kernel as an Ethernet device and carrying out protocol conversion between Ethernet and HDLC in the device driver, high efficient data forwarding between Ethernet and HDLC interface is achieved. The initialization of HDLC device, data transmitting and receiving along with their interrupt handlings are discussed.
Key words：S3C4510B; uClinux; HDLC; device driver; protocol conversion