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squiggles · 06-04-2009, 06:08 PM

I think I can see that program hanging.

Back to my last idea.

Lets say you have a timer interrupt triggering every 2msec and you have a global variable
int COUNTER;
Then you main loop could be something like

main()
{
while(1)
}

and you have a timer interrupt like

timer_interrupt()
{
COUNTER++;
COUNTER = COUNTER & 0x000F; // counts 0 .. 15
switch(COUNTER)
{
case 0:
run_high_priority_stuff();
break;
case 1:
run_high_priority_stuff();
do_some_other_things();
break;
case 2:
run_high_priority_stuff();
check_the_pedal();
break;
.
.
.
.
case 15:
run_high_priority_stuff();
}
}

From there everything is written as a function and simply called somewhere in the switch statement.

How is that for a challenge?

06-04-2009, 06:08 PM	#1537 (permalink)
squiggles EcoModding Apprentice Join Date: May 2009 Location: Australia Posts: 109 Thanks: 0 Thanked 2 Times in 2 Posts	I think I can see that program hanging. Back to my last idea. Lets say you have a timer interrupt triggering every 2msec and you have a global variable int COUNTER; Then you main loop could be something like main() { while(1) } and you have a timer interrupt like timer_interrupt() { COUNTER++; COUNTER = COUNTER & 0x000F; // counts 0 .. 15 switch(COUNTER) { case 0: run_high_priority_stuff(); break; case 1: run_high_priority_stuff(); do_some_other_things(); break; case 2: run_high_priority_stuff(); check_the_pedal(); break; . . . . case 15: run_high_priority_stuff(); } } From there everything is written as a function and simply called somewhere in the switch statement. How is that for a challenge? Last edited by squiggles; 06-04-2009 at 06:53 PM.. Reason: fix the obvious!!