/*

 * Copyright (C) 2003 Texas Instruments Incorporated

 * All Rights Reserved

 */

/*

 *---------main_timer2.c---------

 * This example demonstrates use of Timer to profile (benchmark) the code.

 * Several API's are provided to work with the profiler.

 * It outputs the number of cpu cycles taken by dot product function

 * with optimization and without optimization.

 */



#include <stdio.h>

#include "profiler_timer2.h"



//---------Global constants---------



//Array size

#define BUFF_SIZE			100



//Timer device number to be used for profiling (Use -1 for any timer device)

#define TIMER_NUM			1



//Ratio of (CPU CLK/TIMER CLK) - it is always 8 for 64xx with internal CLK

//  source for timer

#define CPUCLK_BY_TIMCLK	8



//---------Global data definition---------



// The buffers passed to dot product routine

short in1[BUFF_SIZE];

short in2[BUFF_SIZE];



//---------Function prototypes---------

extern int dotprod_ver1(short *, short *, int);

extern int dotprod_ver2(short *, short *, int);



void init_arrays(short *, short *);



//---------main routine---------

void main()

{

	int dot_product1, dot_product2, ret_status;

	long cpu_cycles1, cpu_cycles2;

	

	//Initialise the arrays

	init_arrays(in1, in2);

	

	//Configure timer to be used for profiling

	if ((ret_status = profile_timConfig(TIMER_NUM, CPUCLK_BY_TIMCLK)) != 0)

	{

		switch(ret_status)

		{

			case ERR_INVDEVNUM :

				printf("\nERROR:Invalide timer device number input");

				break;

			case ERR_INVCLKRATIO :

				printf("\nERROR:Invalide CLK ratio input");

				break;

			case ERR_BADHANDLE :

				printf("\nERROR:Timer open failed with invalid handle");

				break;

			default:

				printf("\nERROR:Profiler configure failed");			

		}

		printf("\nTEST FAILED\n");

		exit(1);

	}

	

	//Start profiler

	profile_begin();

	

	//Call the function to be profiled

	dot_product1 = dotprod_ver1(in1, in2, BUFF_SIZE);

	

	//Stop the profiler

	cpu_cycles1 = profile_end();

	

	//Start profiler

	profile_begin();

	

	//Call the function to be profiled

	dot_product2 = dotprod_ver2(in1, in2, BUFF_SIZE);

	

	//Stop the profiler

	cpu_cycles2 = profile_end();

	

	if (cpu_cycles1 < 0  ||  cpu_cycles2 < 0)

	{

		printf("\nERROR:Timer handle is invalid, no profiling is done\n");

		printf("\nTEST FAILED\n");

		exit(1);

	}

	

	//Print appropriate output

	printf("\n\t\tdotprod_ver1\tdotprod_ver2");

	printf("\n-------------------------------------------------");

	printf("\nDot product:\t%d\t%d\n",dot_product1, dot_product2);

	printf("\nCPU cycles :\t%ld\t\t%ld\n",cpu_cycles1, cpu_cycles2);

	

	if ((dot_product1 != dot_product2) || (cpu_cycles1 < cpu_cycles2))

		printf("\nTEST FAILED\n");

	else printf("\nTEST PASSED\n");

	

	//Close the profiler just before returning from main()

	profile_timClose();

}



//Function to initialise two arrays to be used in dot product routine

void init_arrays(short *arr1, short *arr2)

{

	int i;

	

	for (i = 0; i < BUFF_SIZE; i++)

	{

		arr1[i] = i + 0x1111;

		arr2[i] = 0x2222 - i;

	}

}