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Altera_Forum's avatar
Altera_Forum
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13 years ago

times() always returns 1 in NIOS II

Hi, I am trying to measure the process execution time using the following code... # include <stdlib.h># include "sys/alt_stdio.h"# include <sys/alt_alarm.h># include "sys/times.h"# inclu...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

Ok. I added an Interval Timer to my system, I attached it to the sys_clk_timer in the BSP editor, but now my program doesn't seem to work. 

printf("LOADING...\n\n");
   
   start = times(NULL);
  //Lots of work here  
   stop = times(NULL);
   t_total = ((double)stop-(double)start) / alt_ticks_per_second();
   printf("Start = %d\n", start);
   printf("Stop = %d\n", stop);
   printf("Total time = %f\n", t_total);

Before adding the Interval timer I got 0s on Start and Stop. Now the NIOS console doesn't show anything, not even the LOADING print at the top.

Please, I need some help to measure the execution time of my code! Thanks!