研究基于V xWo rk s 嵌入式實時系統(tǒng)下M 總線控制系統(tǒng)的軟件設計思想和實現(xiàn)方法L 該系統(tǒng)需要設置兩個各自獨立運行的實時任務, 以達到對外部設備進行控制的功能L 第1 個任務負責收集命令和通過傳感器采集到的數(shù)據(jù), 并設定命令優(yōu)先級; 第2 個任務負責解釋執(zhí)行, 并發(fā)送命令執(zhí)行后的響應, 兩個任務之間通過命令緩存鏈表進行通信L 此設計思想簡單、高效, 可以被廣泛應用在與M 總線相關的其他控制系統(tǒng)中L
關鍵詞: M 總線; 現(xiàn)場總線; V xWo rk s; 傳感器
Abstract: P ropo ses a new sof tw are design ing idea and m ethod of imp lem en tat ion fo r M bu s con t ro l system based on V xWo rk s em bedded real2t im e system s. In o rder to realize the funct ion of con t ro lling the device, two real2t im e task s are set. The one gathers the comm and and the data co llected by sen so r, and set the p rio rity; the o ther run s the comm and and feeds back the resu lt to the device that needs the resu lt. They comm un icate by a comm and buffer link betw een them. The m ethod u sed in th is paper is simp le and h igh ly eff icien t and can be u sed in o ther k inds of con t ro l system s related w ith theM bu s system.
Key words: M bu s; f ield bu s; V xWo rk s; sen so r