www.pudn.com > PCI9054.rar > Test_PCI9054.cpp

// Test_PCI9054.cpp 
// 
// Generated by DriverWizard version DriverStudio 2.6.0 (Build 336) 
// 
// This console application demonstrates how to open a handle 
// to a device in your driver, and communicate with the driver 
// using Read, Write, and DeviceIoControl calls, as appropriate. 
// 
// This test program attempts to open the device using the 
// GUID defined in "..\PCI9054Deviceinterface.h" 
 
#include  
#include  
 
#include "..\PCI9054Deviceinterface.h"	// Has class GUID definition 
 
// This function is found in module OpenByIntf.cpp 
HANDLE OpenByInterface(GUID* pClassGuid, DWORD instance, PDWORD pError); 
 
// Prototypes 
void CloseIfOpen(void); 
void doRead(void); 
void doWrite(char i); 
 
// Handle to device opened in driver. 
// 
HANDLE	hDevice = INVALID_HANDLE_VALUE; 
 
// Class GUID used to open device 
// 
GUID ClassGuid = PCI9054Device_CLASS_GUID; 
 
 
//////////////////////////////////////////////////////////////////////// 
// Exit 
// 
//		Print a message and exit    
// 
   void Exit(int res) 
{ 
	printf("Exiting...\n\n"); 
	CloseIfOpen(); 
	exit(res); 
} 
 
 
//////////////////////////////////////////////////////////////////////// 
// Main entry point 
// 
// 
int __cdecl main(int argc, char *argv[]) 
{ 
	int		val; 
	DWORD	Error; 
 
	printf("Test application Test_PCI9054 starting...\n"); 
 
	hDevice = OpenByInterface( &ClassGuid, 0, &Error); 
	if (hDevice == INVALID_HANDLE_VALUE) 
	{ 
		printf("ERROR opening device: (%0x) returned from CreateFile\n", GetLastError()); 
		Exit(1); 
	} 
	else 
	{ 
		printf("Device found, handle open.\n"); 
	} 
 
	// Parse the command line 
	val=32; 
	doWrite(val); 
	doRead(); 
 
	return 0; 
} 
 
void CloseIfOpen(void) 
{ 
	if (hDevice != INVALID_HANDLE_VALUE) 
	{ 
		// Close the handle to the driver 
		if (!CloseHandle(hDevice)) 
		{ 
			printf("ERROR: CloseHandle returns %0x.\n", GetLastError()); 
		} 
		hDevice = INVALID_HANDLE_VALUE; 
	} 
} 
 
void doWrite(char n) 
{ 
	char	*buf; 
	ULONG	nWritten; 
	int		i; 
 
	buf = (char *) malloc(n); 
	if (buf == NULL) 
	{ 
		printf("Failed to allocate buffer for write"); 
		Exit(1); 
	} 
 
	for (i=0; i