main.c

This zip describes a benchmark software provided by IXXAT. It shows how to use the DBGU and timer pe

//*----------------------------------------------------------------------------
//*         ATMEL Microcontroller Software Support  -  ROUSSET  -
//*----------------------------------------------------------------------------
//* The software is delivered "AS IS" without warranty or condition of any
//* kind, either express, implied or statutory. This includes without
//* limitation any warranty or condition with respect to merchantability or
//* fitness for any particular purpose, or against the infringements of
//* intellectual property rights of others.
//*----------------------------------------------------------------------------
//* File Name           : main.c
//* Object              : main application written in C
//* Creation            : HPP  06/JUN/2003
//*----------------------------------------------------------------------------

#include "AT91RM9200.h"
#include "lib_AT91RM9200.h"
#include "target.h"

// #include "mmu.h"

extern void AT91F_DBGU_Printk(char *);
extern void benchmark(void);

static char atmel_header[]=
{
"\n\r  *** ATMEL Bench ***\n\r"
"Copyright (C) 2003 ATMEL Corporations\n\r"
};

//*----------------------------------------------------------------------------
//* Function Name       : MCKClock
//* Object              : Get Clock information
//* Input Parameters    : PLLA : Pll value
//* Output Parameters   : mck peripheral clock
//*----------------------------------------------------------------------------
unsigned int MCKClock (unsigned int PLLA)
{
    unsigned int dummy;
    unsigned int mul,div,mdiv;
    unsigned int pmck,mck ;

    dummy = ((*AT91C_CKGR_MCFR) & AT91C_CKGR_MAINF);
    //* Slow Clock (SLCK), typically at 32.768 Hz,
    dummy = dummy * (32768/16);

    mul = (PLLA >> 16) & 0x7FF;
    div = PLLA & 0xFF;
    mdiv = (( *AT91C_PMC_MCKR) >> 8) & 3;	
    pmck =( (mul+1)*dummy/div);
    mck = pmck/(mdiv+1);   
    return mck;

}
//*----------------------------------------------------------------------------
//* Function Name       : InfoClock
//* Object              : Print Clock information
//* Input Parameters    : PLLA : Pll value
//* Output Parameters   : mck peripheral clock
//*----------------------------------------------------------------------------
unsigned int InfoClock (unsigned int PLLA)
{
    unsigned int mdiv,pmck,mck ;
    char message [50];
    //* Get 
    sprintf((char*) message,"PLLA 0x%08X \n\r",PLLA);
    AT91F_DBGU_Printk((char*)message);
    mck = MCKClock ( PLLA);
    mdiv = (( *AT91C_PMC_MCKR) >> 8) & 3;
    pmck = mck*(mdiv+1);
    sprintf((char*) message,"Processor clock % d \n\r",pmck);
    AT91F_DBGU_Printk((char*)message);
    sprintf((char*) message,"Peripheral clock %d \n\r",mck);
    AT91F_DBGU_Printk((char*)message);
    return mck;
}
//*----------------------------------------------------------------------------
//* Function Name       : measure
//* Object              : Print Clock information
//* Input Parameters    : PLLA 
//* Output Parameters   : mck peripheral clock
//*----------------------------------------------------------------------------
void measure(char * cache)
{
    char message[80];
	//* External SDRM
	AT91F_DBGU_Printk("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n\r");
        sprintf(message,"CPU:     ATMEL AT91RM9200 Board AT91RM9200-DK/60MHz SDRAM %s \n\r",cache);
	AT91F_DBGU_Printk(message);
	AT91F_DBGU_Printk("Compiler:Green Hills , runtime optimized speed\n\r");
	AT91F_DBGU_Printk("OS:      no operating system\n\r");
	//* Call bench from IXXAT Automation GmbH
	benchmark();
	//* Internal ram
	AT91F_DBGU_Printk("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n\r");
        sprintf(message,"CPU:     ATMEL AT91RM9200 Board AT91RM9200-DK/60MHz Internal RAM%s \n\r",cache);
	AT91F_DBGU_Printk(message);
	AT91F_DBGU_Printk("Compiler:Green Hills , runtime optimized speed\n\r");
	AT91F_DBGU_Printk("OS:      no operating system\n\r");
	 AT91F_DBGU_Printk("Internal RAM:\n\r");
	//* Call bench from IXXAT Automation GmbH
	benchmark_int();
}
//*----------------------------------------------------------------------------
//* \fn    main
//* \brief This function is main entry point
//*----------------------------------------------------------------------------
int main()
{
	
	AT91F_DBGU_Printk(atmel_header);
 	InfoClock((*AT91C_CKGR_PLLAR));
 
 	// First, enable the clock of the PIOB
    	AT91F_PMC_EnablePeriphClock ( AT91C_BASE_PMC, 1<<AT91C_ID_PIOB ) ;

   	// then, we configure the PIO Lines corresponding to LED1 to LED8
    	// to be outputs. No need to set these pins to be driven by the PIO because it is GPIO pins only.
    	AT91F_PIO_CfgOutput( AT91C_BASE_PIOB, LED_MASK ) ;
    	AT91F_ResetICache();
    	AT91F_ResetDCache();
    	
	AT91F_DisableICache();
	AT91F_DisableDCache();

	measure("Disabel cahe ");

	AT91F_EnableICache();
	measure("Enable ICache");
	
	AT91F_EnableDCache();
	measure("Enable DCache");	

	AT91F_DBGU_Printk("----------------- End bench\n\r");

	while (1){};
}