描述
3.2.2計(jì)算機(jī)端的軟件接口
CH375在計(jì)算機(jī)端提供了應(yīng)用層接口,該接口是CH375動(dòng)態(tài)鏈接庫DLL面向功能應(yīng)用的API,包括:設(shè)備管理API、數(shù)據(jù)傳輸API、中斷處理API。設(shè)計(jì)中采用VC++6.0作為PC端應(yīng)用軟件的開發(fā)平臺(tái)。首先在計(jì)算機(jī)上安裝CH375器件的驅(qū)動(dòng)程序,然后將動(dòng)態(tài)鏈接庫DLL拷貝到計(jì)算機(jī)中,最后將DLL的訪問入口添加到VC項(xiàng)目中,這樣就可以實(shí)現(xiàn)對(duì)USB設(shè)備的應(yīng)用程序編程。
將雙模式USB數(shù)據(jù)傳輸方式應(yīng)用于便攜式比色計(jì)儀器中,充分體現(xiàn)了便攜、靈活和可靠的優(yōu)點(diǎn)。該設(shè)備既可以直接與PC機(jī)進(jìn)行數(shù)據(jù)通訊,工作于有計(jì)算機(jī)的實(shí)驗(yàn)室測(cè)試環(huán)境,也可以通過U盤作為數(shù)據(jù)傳輸中介,使設(shè)備工作于在線檢測(cè)。本方案有效解決了傳統(tǒng)比色計(jì)儀器的局限,可以滿足不同測(cè)試環(huán)境的要求,并且數(shù)據(jù)存儲(chǔ)方便快速,具有廣闊的應(yīng)用前景。
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