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| Author |
Message |
viknes1985
Joined: 11 Nov 2008
Posts: 24
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| fix time for the interrupt |
 Posted: Wed Mar 11, 2009 2:50 pm |
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hi,
i've some problem with interrupt. This what i wanted, i enable the interrupt, after it execute for X times, i disable it. So first i used a while loop to wait till the interrupt to be finish.
| Code: | #int_RB
void reader(void)
{
if (detector==0)
{
//set timer1
detector++; //detector =1
break;
}
else if (detector == 1)
{
//set timer1, pause timer1, run timer1, reset timer1
//and some other code
detector = 2;
}
else if (detector == 2)
{
//if fullfill the condition always execute the code in detector = 2
if (got error)
detector = 0;
if (finish execute for x times)
{
//disable interrupt
flag = 1;
}
}
}
}
void main(void)
{
setup_timer_1(T1_INTERNAL|T1_DIV_BY_1);
enable_interrupts(global);
while (1)
{
flag = 0;
RBIF = 0;
RBIE = 1;
while(!flag)
{
//do nothing, wait for flag equals 1
}
RBIE = 0;
if(flag == 1)
{
//printf at here
}
}
} |
i've timers in ISR which is running and stopping according to if and else condition. it seems like it take very long time to execute, basically i'm doing a manchester code reader, the codes are at http://www.ccsinfo.com/forum/viewtopic.php?t=38065&highlight=.
Getting the code should only take about less than 50 ms, so i replace
| Code: |
while(!flag)
{
//do nothing, wait for flag equals 1
}
|
to
still i couldn't get it run. Is it possible to idle the other process for 50ms and only run ISR. Or RTOS or HIGH priority is the only option i've? Thanks in advance |
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curious how to solve
Guest
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| how to solve it |
| Posted: Sat Mar 14, 2009 1:50 am |
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| Anyone know how to solve it? |
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Sydney
Joined: 13 Feb 2009
Posts: 71
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| Posted: Sat Mar 14, 2009 3:38 am |
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| You need to post a test program that will compile and run, exactly what it should do, and what the problem is. It looks like a bit of a sideways approach to a simple task to me. |
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