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timer 3 is never getting executed? must be something simple

 
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Nick
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timer 3 is never getting executed? must be something simple
PostPosted: Sat Dec 03, 2005 6:19 pm     Reply with quote
This code is for a pic18f4455 with 4 built in timers and one ccp module.

I'n trying to use timer 3 as a simple counter, but when i noticed it wasnt counting I added a printf.. and nothing shows up. so I must have messed up somewhere. Anyone have an idea of what i did wrong,

Thanks Nick

Code:

#int_timer3
void counter()
{
static int32 delay=0;
     printf(usb_cdc_putc,"\n\rAlive...\n\r");   
rise++;
delay++;
if (delay ==10)
{
count++;
delay=0;
}
}



Code:

   delay_ms(2000);

   setup_ccp1(CCP_CAPTURE_RE);    // Configure CCP1 to capture rise
   setup_timer_3(T3_DIV_BY_8);

   enable_interrupts(INT_TIMER3);//constantly counting but only used for RPM
   enable_interrupts(INT_CCP1);   // Setup interrupt on falling edge
   enable_interrupts(INT_TIMER1);//constantly counting but only used for RPM
   enable_interrupts(GLOBAL);

main loop....
Nick
Guest
PostPosted: Sat Dec 03, 2005 7:11 pm     Reply with quote
I moved to timer_0 and it worked, i must be missing a concept here?

Nick
drh



Joined: 12 Jul 2004
Posts: 192
Location: Hemet, California USA

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PostPosted: Sat Dec 03, 2005 9:20 pm     Reply with quote
Change:
setup_timer_3(T3_DIV_BY_8);

To:
setup_timer_3(T3_INTERNAL | T3_DIV_BY_8);
_________________
David
Nick
Guest
thanks
PostPosted: Sun Dec 04, 2005 1:45 pm     Reply with quote
thanks for the tip
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