5驱动程序模型和加载实验.docx

1、5驱动程序模型和加载实验实验五驱动程序模型和加载实验1实验目的：1. 熟悉驱动程序的原理和功能；2. 熟悉流式接口驱动程序的结构；3. 掌握实现流式接口驱动的基本步骤；4. 掌握在Platform Builder编写流式接口驱动的方法。2实验任务：1构建一个Wince平台；2. 编写流式接口的驱动程序；3. 编写驱动测试程序；4. 运行驱动和测试程序，查看输出结果。3实验步骤：1. 启动Platform Builder 如图1，单击“开始”菜单，选择“所有程序”-“Microsoft Windows CE 5.0”-“Platform Builder 5.0”，启动Platform Build

2、er。启动界面如图2。图1 Platform Builder5.0位置图2 Platform Builder5.0启动界面2. 创建一个定制的操作系统设计方案 选择“File”-“New Platform”，弹出“New Platform Wizard”向导，选择“Next”; 在Name文本框，输入“DriverModel”作为操作系统设计的名字；在Path文本框，输入或选择你的操作系统设计方案放置的根目录的路径；默认“%_WINCEROOT%PBWorkspaces DriverModel”如图3，然后选择“Next”;图3 工作空间的名字和位置 从可以获得的板级支持包列表(BSP)中，选

3、择EMULATOR: X86,如图4（在界面右侧的信息栏中显示该BSP的相关信息），然后选择“Next”;图4 选择板级支持包 从可以获得的操作系统设计模板中，选择“Enterprise Web Pad”，如图5，然后选择“Next”;图5 选择设计模板 删除“Applications & Media”选项，如图6，然后选择“Next”;图6 删除“Applications & Media”选项 删除“Networking & Communications”选项，如图7，然后选择“Next”;图7 删除“Networking & Communications”选项 默认通告，然后选择“Next

4、”; 点击” Finish”，完成新平台向导，如图8。图8 完成新平台向导3. 编写流式接口的驱动程序 在Platform Builder中选择“File”-“New Project or File”，创建一个“Windows CE Dynamic link library”项目，项目的名称填写“MyDriver”，如图9;图9 “New Project or File”对话框 向导的第一步，默认，然后点击“Next”； 向导的第二步选择“A Simple Windows CE DLL”，如图10，然后点击“Next”。Platform Builder会为我们生成DLL框架代码。 图10 St

5、ep 2 of 3 向导的第三步默认，然后点击“Finish”。 在WorkSpace工作区，打开FileView，找到文件MyDriver.cpp，位置如图11。双击打开后，在编辑区修改Platform Builder生成的DllMain函数，如下：BOOL APIENTRY DllMain( HANDLE hModule, DWORD ul_reason_for_call, LPVOID lpReserved ) switch ( ul_reason_for_call ) case DLL_PROCESS_ATTACH: OutputDebugString(LMyDriver - DLL_

6、PROCESS_ATTACHn); break; case DLL_PROCESS_DETACH: OutputDebugString(LMyDriver - DLL_PROCESS_DETACHn); break; case DLL_THREAD_ATTACH: OutputDebugString(LMyDriver - DLL_THREAD_ATTACHn); break; case DLL_THREAD_DETACH: OutputDebugString(LMyDriver - DLL_THREAD_DETACHn); break; return TRUE;图11 文件MyDriver.

7、cpp位置 添加流式接口驱动的导出函数前置声明，放到文件MyDriver.cpp，添加到DllMain函数之前，如下：DWORD DEM_Init(LPCTSTR pContext, LPCVOID lpvBusContext);BOOL DEM_Deinit( DWORD hDeviceContext );DWORD DEM_Open( DWORD hDeviceContext, DWORD AccessCode, DWORD ShareMode );BOOL DEM_Close( DWORD hOpenContext );BOOL DEM_IOControl( DWORD hOpenCon

8、text, DWORD dwCode, PBYTE pBufIn, DWORD dwLenIn, PBYTE pBufOut, DWORD dwLenOut, PDWORD pdwActualOut );void DEM_PowerUp( DWORD hDeviceContext );void DEM_PowerDown( DWORD hDeviceContext );DWORD DEM_Read( DWORD hOpenContext, LPVOID pBuffer, DWORD Count );DWORD DEM_Write( DWORD hOpenContext, LPCVOID pBu

9、ffer, DWORD Count );DWORD DEM_Seek( DWORD hOpenContext, long Amount, WORD Type );#define IOCTL_DRIVER_DEMO 42/ Not exposed by the Device Driver void DBGOut(DWORD dwValue);HANDLE hMem=NULL;DWORD dwCount; 添加导出函数的具体实现，放到文件MyDriver.cpp，代码如下：DWORD DEM_Init( LPCTSTR pContext, LPCVOID lpvBusContext) Output

10、DebugString(LMyDriver - DEM_Init - Context: ); OutputDebugString(pContext); OutputDebugString(Ln); OutputDebugString(LMyDriver - DEM_Initn); return 0x1234;BOOL DEM_Deinit( DWORD hDeviceContext ) OutputDebugString(LMyDriver - DEM_Deinitn); OutputDebugString(LMyDriver - DEM_Deinitn); return TRUE;DWORD

11、 DEM_Open( DWORD hDeviceContext, DWORD AccessCode, DWORD ShareMode ) OutputDebugString(LMyDriver - DEM_Openn); OutputDebugString(LhDeviceContext - ); DBGOut(hDeviceContext); OutputDebugString(Ln); OutputDebugString(LMyDriver - DEM_Openn); return 0x5678;BOOL DEM_Close( DWORD hOpenContext ) OutputDebu

12、gString(LMyDriver - DEM_Closen); OutputDebugString(LhOpenContext - ); DBGOut(hOpenContext); OutputDebugString(Ln); OutputDebugString(LMyDriver - DEM_Closen); return TRUE;BOOL DEM_IOControl( DWORD hOpenContext, DWORD dwCode, PBYTE pBufIn, DWORD dwLenIn, PBYTE pBufOut, DWORD dwLenOut, PDWORD pdwActual

13、Out ) OutputDebugString(LMyDriver - DEM_IOControln); OutputDebugString(LhOpenContext - ); DBGOut(hOpenContext); OutputDebugString(Ln); switch (dwCode) case IOCTL_DRIVER_DEMO: OutputDebugString(LDRIVER DEMO IOCTL.n); / reverse the string. HANDLE hTemp=LocalAlloc(LPTR,dwLenIn+1); memset(hTemp,0x00,dwL

14、enIn+1); TCHAR *tcOut=(TCHAR*)hTemp; TCHAR *tcIn=(TCHAR*)pBufIn; DWORD dwChars=dwLenIn/2; for (DWORD x=0;x New Project or File - Files -Text File，文件名叫“MyDriver.def”，如图12，弹出的对话框，选择“是”。图12 New Project or FileMyDriver.def内容如下：LIBRARY MyDriverEXPORTS DEM_Init DEM_Deinit DEM_Open DEM_Close DEM_IOControl

15、DEM_PowerUp DEM_PowerDown DEM_Read DEM_Write DEM_Seek本程序只是实现流式驱动的接口，并没有真正同硬件交互。 在WorkSpace的Parameter View中打开project.reg，在文件中添加如下部分：HKEY_LOCAL_MACHINEDriversBuiltInSample Dll = mydriver.Dll Prefix = DEM Index = dword:1 Order = dword:0 FriendlyName = Demo Driver Ioctl = dword:0提示：这段注册表信息告诉系统，在系统启动的时候把

16、mydriver.dll加载到device.exe，驱动的前缀是DEM，下标索引是1，这样，我们就可以使用CreateFile(L”DEM1:”)这样的方式来访问驱动程序了。4. 编写驱动测试程序 在Platform Builder中选择“File”-“New Project or File”，创建名为“MyApp”的“典型Hello World” WCE Application。 打开”MyApp”工程，选择”ResouceView”，在”MyApp resources”点右键-”Insert.”-”Menu”，新建一个菜单项。添加菜单项如下图13所示。菜单项的ID如表1所示。图13 Fil

17、e菜单 表一 菜单项IDCaptionIDExitID_FILE_EXITWriteID_DRIVER_WRITEReadID_DRIVER_READIo ControlID_DRIVER_IOCTL 打开MyApp工程目录下的MyApp.cpp文件，将其代码修改如下： / MyApp.cpp : Defines the entry point for the application./#include stdafx.h#include resource.h#include #pragma comment(lib, commctrl)#define MAX_LOADSTRING 100#def

18、ine IDC_CMDBAR 0x101HWND hWndCmdBar;void WriteToDriver( );void ReadFromDriver( );void HandleIOCTL( );#define IOCTL_DRIVER_DEMO 42/ Global Variables:HINSTANCE hInst; / current instanceTCHAR szTitleMAX_LOADSTRING; / The title bar textTCHAR szWindowClassMAX_LOADSTRING; / The title bar text/ Forward dec

19、larations of functions included in this code module:ATOM MyRegisterClass(HINSTANCE hInstance);BOOL InitInstance(HINSTANCE, int);LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);void WriteToDriver( ) DWORD dwWritten; TCHAR *tcString=LDemo String.; HANDLE hDrv=CreateFile(LDEM1:,GENERIC_WRITE,0,NUL

20、L,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL); if (INVALID_HANDLE_VALUE = hDrv) OutputDebugString(LFailed to open Driver.n); else WriteFile(hDrv,(LPVOID)tcString,lstrlen(tcString)*sizeof(TCHAR),&dwWritten,NULL); CloseHandle(hDrv);void ReadFromDriver( ) DWORD dwRead; TCHAR tcTemp30; HANDLE hDrv=CreateF

21、ile(LDEM1:,GENERIC_READ,0,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL); if (INVALID_HANDLE_VALUE = hDrv) OutputDebugString(LFailed to open Driver.n); else memset(tcTemp,0x00,30*sizeof(TCHAR); ReadFile(hDrv,tcTemp,30,&dwRead,NULL); MessageBox(NULL,tcTemp,LDemo Data,MB_OK); CloseHandle(hDrv);void Ha

22、ndleIOCTL( ) HANDLE hDrv=CreateFile(LDEM1:,GENERIC_WRITE,0,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL); TCHAR tcBuffer10; DWORD dwBytesReturned; lstrcpy(tcBuffer,LHello); BOOL bRet=DeviceIoControl( hDrv, IOCTL_DRIVER_DEMO, tcBuffer, lstrlen(tcBuffer)*sizeof(TCHAR), tcBuffer, lstrlen(tcBuffer)*siz

23、eof(TCHAR), &dwBytesReturned, NULL); MessageBox(NULL,tcBuffer,LIOCTL Test,MB_OK); CloseHandle(hDrv); int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow) / TODO: Place code here. MSG msg; HACCEL hAccelTable; / Initialize global strings LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING); LoadString(hInstance, IDC_MyApp, szWindowClass, MAX_LOADSTRING); MyRegisterClass(hInstance); / Perform application initialization