本文介紹了基于S3C4510B 和嵌入式操作系統(tǒng)uClinux 的HDLC 接口驅(qū)動的設(shè)計與實(shí)現(xiàn)。采取將HDLC 接口向內(nèi)核注冊為Ethernet 設(shè)備，并在驅(qū)動中完成Ethernet 與HDLC協(xié)議間轉(zhuǎn)換的設(shè)計方案，實(shí)現(xiàn)了數(shù)據(jù)在Ethernet 和HDLC 接口間的高效轉(zhuǎn)發(fā)。對驅(qū)動編寫中的HDLC 設(shè)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(jìn)行了較為詳細(xì)的介紹。該方案已在實(shí)際的衛(wèi)星通信系統(tǒng)中應(yīng)用，取得了良好的效果。
關(guān)鍵詞：S3C4510B；uClinux；HDLC；設(shè)備驅(qū)動；協(xié)議轉(zhuǎn)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