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Marshall Brown
10/11/12 16:08
Read: 623 times
Hamilton
New Zealand


 
#188630 - bug
Responding to: Marshall Brown's previous message
For anyone critiquing or using the code for their own application




//call this on a 1mSec or more tick that is not on an interrupt.
void TIMERS_sort_out_timers(void){
	unsigned char i;
	unsigned int elapsed_msecs;

	elapsed_msecs = timer_count;
	timer_count = 0;


	for (i = 0; i < NUMBER_OF_TIMERS; i++){				//step through each of our timers
		if (timer_array[i].current_value != 0){			//see if we have already expired.
			timer_array[i].current_value -= elapsed_msecs;			//if not then decrement the timer toward 0 or past 0 
			if (timer_array[i].current_value <= 0){		//now see if we have timed out
				timer_array[i].current_value = 0;		//make sure that we won't fire again if we are a single shot timer, we may have gone past 0 
				if (timer_array[i].timer_type == timer_periodic){	//if we run on a periodic timer 
					timer_array[i].current_value = timer_array[i].reset_value;	//reload the timer 
				}
				timer_array[i].timeout_func(timer_array[i].func_args);			//if we have timed out then perform the function in our callback.
			}
		}
	}
}




 


I have made sure to explicitly set the current_value to 0, so that the fire won't repeatedly fire if the time tick causes the current_value to go negative.





List of 13 messages in thread
TopicAuthorDate
Timers - Function Pointers      Marshall Brown      10/03/12 21:08      
   Too much for a '51?      Oliver Sedlacek      10/04/12 02:05      
      I Agree      Marshall Brown      10/04/12 03:27      
   Function Pointers...      Andy Neil      10/04/12 05:50      
   you are violating KISS      Erik Malund      10/04/12 08:41      
   Various Timer Functions        Michael Karas      10/06/12 01:14      
      Thanks Michael      Marshall Brown      10/06/12 23:34      
         regardless, you are violating KISS        Erik Malund      10/09/12 07:44      
            even on ARM      Stefan KAnev      10/09/12 13:40      
            The timer simply increments      Marshall Brown      10/11/12 15:58      
               bug      Marshall Brown      10/11/12 16:08      
                  more bugs      Maarten Brock      10/13/12 14:30      
                     thanks      Marshall Brown      10/14/12 13:31      

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