#include <windows.h>
#include <stdio.h>
#include "CyAPI.h"
#include <assert.h>
#include <conio.h>


HANDLE XyloDeviceHandle;

///////////////////////////////////////////////////
// Open and close the USB driver
void USB_Open()
{
	XyloDeviceHandle = CreateFile("\\\\.\\EzUSB-0", GENERIC_WRITE, FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
	assert(XyloDeviceHandle!=INVALID_HANDLE_VALUE);
}

void USB_Close()
{
	CloseHandle(XyloDeviceHandle);
}

///////////////////////////////////////////////////
// USB functions to send and receive bulk packets
DWORD USB_BulkWrite(DWORD pipe, void* buffer, DWORD buffersize)
{
	DWORD nBytes;
	assert(buffersize<0x10000);
	DeviceIoControl(XyloDeviceHandle, 0x222051, &pipe, sizeof(pipe), buffer, buffersize, &nBytes, NULL);

	assert(nBytes==buffersize);	// make sure everything was sent
	return nBytes;
}

DWORD USB_BulkRead(DWORD pipe, void* buffer, DWORD buffersize)
{
	DWORD nBytes;
	assert(buffersize<0x10000);
	DeviceIoControl(XyloDeviceHandle, 0x22204E, &pipe, sizeof(pipe), buffer, buffersize, &nBytes, NULL);

	return nBytes;
}

// GUID {0EFA2C93-0C7B-454F-9403-D638F6C37E65}
static GUID GUID_KNJN_FX2 = {0x0EFA2C93, 0x0C7B, 0x454F, 0x94, 0x03, 0xD6, 0x38, 0xF6, 0xC3, 0x7E, 0x65};

void main()
{

	//This is transfered byte buffer.
	unsigned char transferbuf[8024];
	unsigned char ReceiveBuf[8024];
	LONG Transfered[8024];
	LONG Received[8024];

	for (int j = 0; j < 8024; j++)
	{
		transferbuf[j] = j;
		Transfered[j] = 0;
		Received[j] = 0;
		ReceiveBuf[j] = 0;
	}

	//HiRes Perf Counter
	__int64 counter1 = 0, counter2 = 0, freq = 0;

	LONG transferlen = 256;
	LONG ReceivedLen = 0;
	LONG TotalTransfered = 0;


	USB_Open();

	
	//Get HiRes Performance Counter Freq
	QueryPerformanceFrequency((LARGE_INTEGER *)&freq);

	//Get Hires Perf Counter: Start
	QueryPerformanceCounter((LARGE_INTEGER *)&counter1);
	
	
	USB_BulkWrite(2, transferbuf, transferlen);
	transferlen = 512;
	TotalTransfered += transferlen;

	//Execute Transfer 1000 times = 512KB.
	for (int i = 0 ; i < 8000; i++)
	{
		transferlen = 512;
		USB_BulkWrite(2, transferbuf, transferlen);
		Transfered[i] = transferlen;
		TotalTransfered += transferlen;
//		ReceivedLen = USB_BulkRead(4, ReceiveBuf, 512);
//		Received[i] = ReceivedLen;
//		transferlen = ReceivedLen;
//		if (transferlen > 512) 
//		{
//			transferlen = 512;
//		}
	}
	USB_Close();

	//Get Hires Perf Counter: Finish
	QueryPerformanceCounter((LARGE_INTEGER *)&counter2);

	printf("Counter: %d\n", counter2 - counter1);
	printf("QueryPerformanceCounter minimum resolution: 1/%d Seconds.\n",freq);
	printf("Total %d write time: %f seconds.",TotalTransfered, ((counter2 - counter1) * 1.0 / freq));
	printf("BandWidth = %d B/sec.\n", TotalTransfered * freq / (counter2 - counter1) );
	printf("press any key\n");
	

}