現(xiàn)在大多數(shù)的嵌入式設(shè)備中針對(duì)串口實(shí)時(shí)數(shù)據(jù)的處理都是在應(yīng)用程序中來(lái)完成的，這
必然會(huì)降低數(shù)據(jù)的實(shí)時(shí)性能，數(shù)據(jù)的實(shí)時(shí)重復(fù)利用率也不高。通過(guò)改寫嵌入式Linux 串口驅(qū)動(dòng)程序，在內(nèi)核中加入實(shí)時(shí)數(shù)據(jù)處理模塊，改善了這些問(wèn)題。實(shí)驗(yàn)結(jié)果表明，所作的改進(jìn)有助于數(shù)據(jù)實(shí)時(shí)性能和重復(fù)利用率的提高以及應(yīng)用程序開(kāi)發(fā)難度的降低。
關(guān)鍵詞：嵌入式Linux；串口；驅(qū)動(dòng)程序；實(shí)時(shí)；EDAS-24IP
Abstract：Now most of the processing that are directed against serial port real-time data all are accomplished in application program, this certainly will reduce the real-time performance of data, and recycle rate is not high yet. By way of rewriting Linux serial port driver, joining read-time data processing module in the kernel, these problems have been improved. Experiment indicates finally that the improvement of having done contributes to the raise of data real-time performance and recycle rate and the reduction of the application development degree of difficulty.
Key words：embedded Linux; serial; driver; real time; EDAS-24IP