gistfile1.cpp

HANDLE handle = ::CreateFileW (L"\\\\.\\ezusb-0",
                         GENERIC_READ | GENERIC_WRITE,
                         FILE_SHARE_READ | FILE_SHARE_WRITE,
                         0,
                         OPEN_EXISTING,
                         0,
                         0);

unsigned short pipe;
unsigned short commandCode; //Command code sent to device which has the IC on board
unsigned receivedLength;

const unsigned long kBulkWrite = 0x0800 + 20;
const unsigned long kWriteRegister = (FILE_DEVICE_UNKNOWN << 16) | (FILE_ANY_ACCESS << 14) | (kBulkWrite << 2) | METHOD_IN_DIRECT;

const unsigned long kBulkRead = 0x0800 + 19;
const unsigned long kReadData = (FILE_DEVICE_UNKNOWN << 16) | (FILE_ANY_ACCESS << 14) | (kBulkRead << 2) | METHOD_OUT_DIRECT;


//Pipe 0, Device Tx register command
pipe = 0;
commandCode = 0xBEEF; //Control code sent to device which has the IC on board
DeviceIoControl (handle, kWriteRegister, &pipe, 2, &commandCode, 2, &receivedLength);

//Pipe 1, Rx register command 
pipe = 1;
commandCode = 0xDEAD;
DeviceIoControl (handle, kWriteRegister, &pipe, 2, &commandCode, 2, &receivedLength);

//Pipe 2, Receive data into buffer
pipe = 2;
unsigned char buffer [128];
DeviceIoControl (handle, kReadData, &pipe, 2, &buffer, 128, &receivedLength);