// waveformDlg.cpp : implementation file
//

#include "stdafx.h"
#include "waveform.h"
#include "waveformDlg.h"
#include "acces32.h"
#include <math.h>

unsigned int BASE=0x300;

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CWaveformDlg dialog

CWaveformDlg::CWaveformDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CWaveformDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CWaveformDlg)
	m_addrEDIT = _T("");
	m_instrLBL = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	outputting = false;
}

void CWaveformDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CWaveformDlg)
	DDX_Control(pDX, IDC_BEGIN_BTN, m_beginBTN);
	DDX_Text(pDX, IDC_EDIT_ADDR, m_addrEDIT);
	DDX_Text(pDX, IDC_INSTRUCTIONS_LBL, m_instrLBL);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CWaveformDlg, CDialog)
	//{{AFX_MSG_MAP(CWaveformDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BEGIN_BTN, OnBeginBtn)
	ON_WM_CLOSE()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CWaveformDlg message handlers

BOOL CWaveformDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	
	m_addrEDIT = "300";

	
    m_instrLBL += "This program will output three wave forms from the 104-DA12-8.\n\r";
    m_instrLBL += "The wave forms will be output on DACS 0 - 2.\n\r";
    m_instrLBL += "The wave forms will stop when the user clicks stop or exits the program\n\r";
	
	UpdateData(false);

	return TRUE;  // return TRUE  unless you set the focus to a control
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CWaveformDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CWaveformDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CtrMode(unsigned short addr, char cntr, char mode)
{
  int ctrl;
  ctrl = (cntr << 6) | 0x30 | (mode << 1);
  OutPortB(addr+3,ctrl);
}

void CtrLoad(unsigned short addr ,int c,int val)
{
  OutPortB(addr+c,val & 0x00FF);
  OutPortB(addr+c,(val>>8) & 0x00FF);
}




void CWaveformDlg::OnBeginBtn() 
{
	// TODO: Add your control notification handler code here
	unsigned short BUFFER[30000];
	char *buf;
	int count;


	if (!outputting)
	{
		outputting = true;
		m_beginBTN.SetWindowText("STOP");

		UpdateData(true);

		buf = m_addrEDIT.GetBuffer(5);
		sscanf(buf, "%x", &BASE);
		m_addrEDIT.ReleaseBuffer(-1);

		/*****************************************************
		** This for loop will fill the buffer with the following
		** three wave forms and rescales them to have the same period:
		** 1) sin(x^2) from x = -3.3 to 3.3
		** 2) cos(x^2) from x = -3.0 to 3.0
		** 3) sin(x^2) * cos (x^2) from x = -1.9 to 1.9
		*****************************************************/



		for (count = 0; count < 10000; count++)
		{
			BUFFER[(count * 3)] = int(sin(pow(-3.3 + (.00066 * count), 2)) * 2047.0 + 2048.0);
			BUFFER[(count * 3)] &= 0x0fff; //need to be certain that the control bits are what we want


			BUFFER[((count * 3) + 1)] = int(cos(pow(-3.0 + (.0006 * count), 2)) * 2047.0 + 2048.0);
			BUFFER[((count * 3) + 1)] &= 0x0fff;

			BUFFER[((count * 3) + 2)] = int(sin(pow(-1.9 + (.00038 * count), 2)) * cos(pow(-1.9 + (.00038 * count), 2)) * 2047.0 + 2048.0);
			BUFFER[((count * 3) + 2)] &= 0x0fff; //let the card know that this is the end of this scan
			BUFFER[((count * 3) + 2)] |= 0x2000;

		}

		BUFFER[29999] |= 0x1000; //this is the end of the stream and the card needs to loop

		OutPortB(BASE + 0x1a, 0); //we will only be writing to the first 30k addresses
								 //so we get to leave bit 16 of the SRAM addr at 0

		for (count = 0; count < 30000; count++)
		{
			OutPort(BASE + 0x18, (count * 2)); //set the address we are going to write to
			OutPort(BASE + 0x1c, BUFFER[count]); //write the value for that address
		}


		CtrMode(BASE + 0x14, 1, 2); //set counter 1 to mode 2
		CtrMode(BASE + 0x14, 2, 2); //set counter 2 to mode 2

		CtrLoad(BASE + 0x14, 1, 5); //load counter 1 to 5 ticks
		CtrLoad(BASE + 0x14, 2, 10); //load counter 2 to 10 ticks

		OutPortB(BASE + 0x10, 0x41); //tell the card to start and enable the
									//ARB 
	}
	else
	{
		outputting = false;
	    OutPortB(BASE + 0x10, 0); //tell the card to stop
		m_beginBTN.SetWindowText("&Begin");
	}
		
}

void CWaveformDlg::OnClose() 
{
	// TODO: Add your message handler code here and/or call default
	OutPortB(BASE + 0x10, 0); //tell the card to stop
	CDialog::OnClose();
}