Giới thiệu một số hệ điều hành nhúng mở

GHteil<br /> <br /> -m<br /> Nguyen Anh Tuan, Chu Ngoc Liem, Pham Ngpc Minh,<br /> Chau Van Tu, Nguyen Dang Chung, Nguyen Thanh Long<br /> <br /> <br /> <br /> <br /> Gin day, he thdng nhiing cao cap mdi duge thuc I. WINDOWS CE<br /> su quan tam. Nhidu easd nghien cini vi phit tridn Wmdows CE hay Windows Embedded CE Id tdn<br /> cdng nghe da bit diu cd nhitng nghidn cuu cabin mdt hd didu hdnh eua Microsoft. Ddy Id mdt hd dieu<br /> va budc dau phit trien hd thdng nhung cao cap. hdnh nhimg md, dugc su dirng cho cdc he thdng<br /> Vdi nen ting li nhung bd xu ly manh cung vm cic nhimg.<br /> he dieu hinh nhimg, he thdng nhimg cao cap cho Windows CE md ra kha ndng phat tridn rat ldn<br /> phep 0ii nhQng bai toin ddi hdi nang lire xu ly ddi vdi ede nhd phdt tridn img dimg bdi nd cung<br /> cao, dn dinh, gon nhe vi tieu thu dien nang thap cap rat nhieu bd cdng eu ldp trinh dd tao ra cdc md<br /> trong nhidu linh vuc nhu quan su, dan su cung quan U vd cdc img dung ma may cho ede phdn cimg<br /> nhu cdng nghidp. Hidn cd khoang 50 he didu hinh eo so eua Windows CE. Windows CE eung cdp eho<br /> nhiing cd the chay dugc trdn cic bd xu ly ARM cac nhd phdt tridn img dung mdt mdi tmdng API 32<br /> nhu : Embedded Linux, QNX, Micrium, MontaVista, bit cua Microsoft cimg vdi su de ddng sir dung vd su<br /> Windows CE, Symbian, Android, Lynyos, VxWork... linh boat cua ngdn ngfl Mch ban. Ddng thdi nd cflng<br /> Bai bao se 0di thieu vd ba he didu hinh nhimg md hd trg cho cae img dung da phuong tidn, Intemet,<br /> phd bidn hidn nay: Windows CE, Embedded Linux mang ndi bd (LAN), tmyen thdng vd cdc dich vu bdo<br /> va Android.. mat...Vi vay ndn Windows CE dugc ung dung rdt<br /> <br /> <br /> <br /> <br /> TAP CHI CNTT & TT KY 2 (8.2011) 141<br />  PHAT TRIEN LTNG DUNG<br /> <br /> <br /> <br /> rdng rai tten cdc thidt bi nhd. nhdn ciing eung edp<br /> didn tii edm tay rihu didn mot sd chlic ndng quan ly<br /> Bp< ApplcatJons V<br /> thoai, mdy ehoi ttd ehoi, tap tin, cdc dich vu cho<br /> W ^m Sanioesdm ^m U(levlc*.6xe ^m Uderfce.«e g<br /> mdy nghe nhac vd cdc san phdp eae iing dung cd thd<br /> phdm ttong cdng nghiep ^^••k^^l^^H^^^^i^^^^^^^lQI^B^P sir dung cdc chitc ndng<br /> nhuHMI, PLC... Win32 CE API<br /> Condl.DUywinlNetilll/CaniinCttLWCoinnOI^II/wlnSackdlir. cua nhan.<br /> 1. Cau true Windows Phan cung (Hardware):<br /> CE<br /> C J<br /> I GWES.dll I I Dwlce.dll 1I Filesys.OII ]<br /> Nhan cua Windows CE<br /> NDIS ^etwork<br /> Windows CE la mdt he Services tiiong tac vdi phdn ciing<br /> I KilLdll 1 I DevMgf.dd 1 I FsdMgr.dJ j<br /> dieu hdnh thdi gian thue, thdng qua ede trinh didu<br /> c J<br /> hd ttg vd chay tten nhieu<br /> bd xu ly khde nhau bao<br /> gdm ARM, MIPS, x86 vd<br /> SH4. Windows CE eho<br /> tm<br /> (CPUJRAMJROM)<br /> <br /> V^_ZiLj<br /> ( SD )<br /> <br /> ( PAM ) Hardware<br /> ( COM ) ( Audio ) ( Wdoo )<br /> <br /> ( USB ) (Mouse) ( LAN )<br /> T<br /> khidn (driver). Su kdt hgp<br /> eua ldp tuong thich thidt<br /> bi gdc (OAL), driver, vd<br /> cdc tap tin cau hinh cho<br /> phdp 32000 tidn tiinh mot ndn tang phdn cimg<br /> chay ddng thdi. Tuy nhien, Hinh 1: CSu true Windows CE<br /> eu the ed ten Id gdi hd ttg<br /> ttdn thue td sd lugng tidn mach (BSP).<br /> trinh edn phu thude vdo kha ndng xir ly eua he<br /> 2. Cong cu phat trien Windows CE<br /> thdng.<br /> Wmdows CE bao gdm mdt bd cdng eu hd cho vide<br /> Cau tnic eua he dieu hdnh Windows CE duge md thidt kd vd cau hinh OS images, phdt trien ede driver,<br /> tadhuih 1. Trong do: dich vu vd iing dung. Platform builder cho Windows<br /> User Processes: Bao gdm cae tidn trinh ridng bidt CE 6.0 dugc plug-in ttdn Microsoft Visual Studio<br /> tao nen eac iing dung ngudi dung, chdng ban nhu 2005(VS2005). Dd phdt tiidn Windows CE edn<br /> img dung dugc ggi Id user-mode server. Nhung img CO VS2005 vd Platform Builder. Vide sir dung nen<br /> dung nay gdm cd Udevice.exe, Servieesd.exe(ld tien tang VS2005 1dm cdng cu giup cho vide phdt tridn<br /> trinh tai cdc dich vu chang ban HTTP, FTP,UPnP...) Windows CE duge de dang hon. Platform Builder<br /> He thdng API sdn ed eho eac iing dung thdng qua duge plug-in trdn VS2005 eho phdp xdy dung cdc<br /> thu vidn coredU.dll, chimg Udn kdt vdi tat ea cdc BSP, tao ra ede driver, xdy dung runtime image va<br /> md dun thue thi eua he didu hanh. Ben canh dd, he xudt ra eac SDK de hd ttg phat tridn ede img dung.<br /> didu hdnh eung cdp ede img dung API tuong tu nhu Didn hinh cua mdt du dn phdt trien Windows CE,<br /> Win32 API tren mdy tinh dd bdn. Ngudi phdt tridn ed Platform Builder trong IDE VS2005 dugc su dung dd<br /> the sir dung tinh nang tmy cap thdng qua thu vien thue hidn eac nhiem vu sau :<br /> img dung, chang ban nhu Wininet.dll, Winsoek.dU,<br /> - Phat tiidn thidt ke OS vd tao ra OS runtime image<br /> Msxml.dU, vd Winhttp.dU.<br /> tii OS thidt kd.<br /> Nhin (kernel): dugc md ta bdi md dun NK.exe la<br /> - Phdt trien device driver code vd bien dich sang<br /> ldi cua he didu hdnh Windows CE. Nd eung cap cdc<br /> device driver binary.<br /> chitc ndng co ban eho he didu hdnh. Cae chitc ndng<br /> Phdt tridn programming Ubrary code vd tao ra<br /> ndy bao gdm vide xu ly eo so du lieu vd quan ly bd<br /> programming Ubrary binary.<br /> <br /> <br /> 42 TAP CHI CNTT & TT KY 2 (8.2011)<br />  PHAT TRIEN l/NG DUNG<br /> <br /> <br /> <br /> Jdufl^ttflbrr _£<br /> <br /> <br /> <br /> <br /> B aUtifiHetti<br /> <br /> at Qllrdudtlh*<br /> HUBTMKS blBB«; //<br /> TCaiK •cTtcl*|KlX_LOMSTKDR)]i // 7^ t<br /> t m t B ••nBaMCl«MtKU_L