現(xiàn)在大多數(shù)的嵌入式設(shè)備中針對串口實時數(shù)據(jù)的處理都是在應(yīng)用程序中來完成的，這
必然會降低數(shù)據(jù)的實時性能，數(shù)據(jù)的實時重復(fù)利用率也不高。通過改寫嵌入式Linux 串口驅(qū)動程序，在內(nèi)核中加入實時數(shù)據(jù)處理模塊，改善了這些問題。實驗結(jié)果表明，所作的改進有助于數(shù)據(jù)實時性能和重復(fù)利用率的提高以及應(yīng)用程序開發(fā)難度的降低。
關(guān)鍵詞：嵌入式Linux；串口；驅(qū)動程序；實時；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