/****************************************
/ Serial Communication from PDA to Mega32
/ ECE 476 Final Project
/ Diego Asturias (da65)
/ John Sun (jzs3)
/ Mar. 21, 2006
/****************************************/

//include files
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>


int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance, LPWSTR lpCmdLine,int nCmdShow)
{
	// data buffer
	char outBuffer[5];			// transfer six data bytes and one stop byte
	outBuffer[0] = 127;			// start byte has value 127
	outBuffer[4] = 126;			// stop byte has value 126

	
	// Extract information from text file
	// ----------------------------------
	FILE *f;
	char buf[10];
	f = fopen("carcontrol.txt","r");

	fgets(buf, 10, f);			// extract six bytes
	outBuffer[1] = atoi(buf);

	fgets(buf, 10, f);
	outBuffer[2] = atoi(buf);

	fgets(buf, 10, f);
	outBuffer[3] = atoi(buf);

	fclose(f);					// close file

	FILE *e;					// write to new file for debug
	e = fopen("test.txt","w");

	sprintf(buf,"%d\n",outBuffer[1]);
	fputs(buf,e);
	sprintf(buf,"%d\n",outBuffer[2]);
	fputs(buf,e);
	sprintf(buf,"%d\n",outBuffer[3]);
	fputs(buf,e);
	fclose(e);



	// Open the serial port
	// --------------------

	// create port variables
	DWORD dwError;
	unsigned long dwNumBytesWritten;
	
	HANDLE hPort = CreateFile(TEXT("COM1:"),		// Pointer to the name of the port
                      GENERIC_READ | GENERIC_WRITE,	// Access (read-write) mode
                      0,							// Share mode
                      NULL,							// Pointer to the security attribute
                      OPEN_EXISTING,				// How to open the serial port
                      0,							// Port attributes
                      NULL);						// Handle to port with attribute to copy



	// Set up serial port
	// ------------------
	DCB PortDCB;

	// Initialize the DCBlength member. 
	PortDCB.DCBlength = sizeof (DCB); 

	// Get the default port setting information.
	GetCommState (hPort, &PortDCB);

	// Change the DCB structure settings.
	PortDCB.BaudRate		  = 9600;				// Current baud 
	PortDCB.fBinary			  = TRUE;               // Binary mode; no EOF check 
	PortDCB.fParity			  = FALSE;              // Enable parity checking 
	PortDCB.fOutxCtsFlow	  = FALSE;				// No CTS output flow control 
	PortDCB.fOutxDsrFlow	  = FALSE;				// No DSR output flow control 
	PortDCB.fDtrControl		  = DTR_CONTROL_DISABLE;// DTR flow control type  												
	PortDCB.fDsrSensitivity   = FALSE;				// DSR sensitivity 
	PortDCB.fTXContinueOnXoff = FALSE;				// XOFF continues Tx 
	PortDCB.fOutX			  = FALSE;              // No XON/XOFF out flow control 
	PortDCB.fInX			  = FALSE;              // No XON/XOFF in flow control 
	PortDCB.fErrorChar		  = FALSE;              // Disable error replacement 
	PortDCB.fNull			  = FALSE;              // Disable null stripping 
	PortDCB.fRtsControl		  = RTS_CONTROL_DISABLE;// RTS flow control      
	PortDCB.fAbortOnError     = FALSE;				// Do not abort reads/writes on error
	PortDCB.ByteSize		  = 8;                  // Number of bits/byte, 4-8 
	PortDCB.Parity			  = NOPARITY;           // 0-4=no,odd,even,mark,space 
	PortDCB.StopBits		  = ONESTOPBIT;         // 0,1,2 = 1, 1.5, 2 

	// Configure the port according to the specifications of the DCB 
	// structure.
	if (!SetCommState (hPort, &PortDCB))
	{
		// Could not configure the serial port.
		dwError = GetLastError();
		MessageBox (NULL, TEXT("Unable to configure the serial port"), TEXT("Error"), MB_OK);
		return FALSE;
	}

	Sleep(100); 



	// Write to MCU
	// ------------
	WriteFile (hPort,			// Port handle
           &outBuffer,			// Pointer to the data to write 
           5,					// Number of bytes to write
           &dwNumBytesWritten,	// Pointer to the number of bytes written
           NULL					// Must be NULL for Windows CE
	);
	
	Sleep(100);


	// Close serial port
	// -----------------
	CloseHandle(hPort);
	//LPCWSTR temp = dwNumBytesWritten;

	//MessageBox(NULL, (const unsigned short *)buff, TEXT("Message"), MB_OK);
	
	return 0;
}