adcard_e.cpp

一个AD数据采集卡的例子源代码

// adcard_e.cpp - main module for VxD ADCARD_E

#define DEVICE_MAIN 
#include "adcard_e.h" 
Declare_Virtual_Device(ADCARD_E) 
#undef DEVICE_MAIN 
#include <vmm.h> 
//--------------------全局变量定义 
HANDLE hWin32Event;//接收应用程序发来的事件句柄 
//vxd私有缓冲类实例应申明为全局变量，因为类Ms_isaDevice和MsHwInt中都会用到它 
  
BuffClass *vBuff; 
BYTE win32BuffState=(BYTE)0;//反映第二线程的状态。0表示闲，即等待；1表示忙 
OUT_BUFFER_STRUCT outBufStructure;//second buffer 
//********************************class Adcard_eDevice 
BOOL Adcard_eDevice::OnSysDynamicDeviceInit() 
{ 
        dprintf("OnSysDynamicDeviceInit begin\n"); 
        //initialize outBufStructure 
        outBufStructure.signal=0;//初始化，无操作 
        for(int i=0;i<BUFFER;i++) 
        outBufStructure.buffer[i]=(BYTE)0xAA;//缓冲初始化取值 
        //生成AdVMEvent类实例 
    if(!VEvent::initEvents()) 
        { 
                dprintf("AdVMEvent init failed\n"); 
                return FALSE; 
        } 
        else 
        dprintf("AdVMEvent init ok\n"); 
        //生成BuffClass类实例，同时也就生成了缓冲inputBuffer和outputBuffer 
 /*   BuffClass* */vBuff=new BuffClass(); 
        if(!vBuff) 
        { 
                dprintf("buffer init failed\n"); 
                return FALSE; 
        } 
        else 
        { 
//              poin=vBuff; 
                dprintf("buffer init succeed\n"); 
        } 
        //生成中断类实例 
        pMyIRQ=new AdHwInt(); 
        if(!pMyIRQ) 
        { 
                dprintf("hardware init failed\n"); 
                return FALSE; 
        } 
        else 
                dprintf("hardware init ok\n"); 
        //挂中断 
    if(pMyIRQ->hook()) 
        { 
                dprintf("Interrupt hook succeed\n"); 
        //开中断 
                pMyIRQ->physicalUnmask(); 
                //初始化 
                dprintf("OnSysDynamicDeviceInit finished\n"); 
                dprintf("1 the address of vBuff=%x,pMyIRQ=%x\n",vBuff,pMyIRQ); 
                return TRUE; 
        } 
        else 
        { 
                dprintf("Interrupt hook failed\n"); 
            return FALSE; 
        } 
  
  
} 
BOOL Adcard_eDevice::OnSysDynamicDeviceExit() 
{ 
    dprintf("OnSysDynamicDeviceExit\n"); 
        delete pMyIRQ; 
        //AdVMEvent 实例在handler函数返回时自动撤销 
        delete vBuff; 
        pMyTimer->Cancel(); 
        delete pMyTimer; 
        return TRUE; 
} 
DWORD Adcard_eDevice::OnW32DeviceIoControl(PIOCTLPARAMS pDIOCParams) 
{ 
        //应用程序-〉VxD 
//      vBuff=poin; 
        dprintf("win32 to VxD\n"); 
        dprintf("2 the address of vBuff=%x,pMyIRQ=%x\n",vBuff,pMyIRQ); 
        IN_BUFFER_STRUCT *inBufStructure; 
        switch(pDIOCParams->dioc_IOCtlCode) 
        { 
        case DIOC_OPEN:
                dprintf("Open device succeed\n"); 
                dprintf("3 the address of vBuff=%x,win32BuffState=%x\n",vBuff,&win32BuffState); 
                break; 
        case DIOC_CLOSEHANDLE:
                dprintf("Close device succeed\n"); 
                break; 
        case MY_REGISTER: 
                //inbuffer 
                inBufStructure=(IN_BUFFER_STRUCT*)pDIOCParams->dioc_InBuf; 
                channel=inBufStructure->channel; 
                frequency=inBufStructure->frequency; 
                hWin32Event=inBufStructure->eventhandle; 
                //outbuffer 
                *(PVOID*)pDIOCParams->dioc_OutBuf=&outBufStructure; 
                 { 
                        _outp(0x281,(BYTE)(channel<<8)); 
                        pMyTimer=new AdTimeOut(1000/((int)frequency));//生成时钟钟类实