現在大多數的嵌入式設備中針對串口實時數據的處理都是在應用程序中來完成的，這
必然會降低數據的實時性能，數據的實時重復利用率也不高。通過改寫嵌入式Linux 串口驅動程序，在內核中加入實時數據處理模塊，改善了這些問題。實驗結果表明，所作的改進有助于數據實時性能和重復利用率的提高以及應用程序開發難度的降低。
關鍵詞：嵌入式Linux；串口；驅動程序；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