Coding example

AN2328

4/7

//Read Attributes from the current device

HIDD_ATTRIBUTES Attributes;

Attributes.Size = sizeof(Attributes);

try {

Result = HidD_GetAttributes (DeviceHandle,&Attributes);

if (!Result)

{

CloseHandle(DeviceHandle);

continue;

}

} catch (...) {

continue;

}

// All information obtained

// Attributes.VendorID

// Attributes.ProductID

// detailData.DevicePath <- Remember for future use

// easy example can be:

if ((Attributes.VendorID

== YOUR_VENDOR_ID) &&

(Attributes.ProductID == YOUR_PRODUCT_ID))

strcpy(your_devicePath, detailData.DevicePath);

} //end of while

1.3

Open device

ReadHandle = CreateFile (your_devicePath,

GENERIC_READ|GENERIC_WRITE,

FILE_SHARE_READ|FILE_SHARE_WRITE,

(LPSECURITY_ATTRIBUTES)NULL,

OPEN_EXISTING,

0,

NULL);

1.4

Read device

DWORD BytesRead = 0;

char Report[INPUT_REPORT_SIZE];

bool Result;

memset(&Report, 0, INPUT_REPORT_SIZE);

Result = ReadFile (ReadHandle,Report,sizeof(Report),&BytesRead,NULL);