Re: [avr-gcc-list] Help with interupt (fwd)

[Michael Hadianto]

thanks for your help, yes my interupt vector is reseting my program, the
mistake is very simple, on TCCR1B i set value of 0x01, at it reset my
program all the time, and i make slight mistake on init.

thanks




> Michael,
> 
> one thing you would want to look at is the interrupt vectors.
> Seems your timer interrupt points to reset location!?!?
> -uwe
> 
> ----- Original Message -----
> From: "Michael Hadianto" <address@hidden>
> To: <address@hidden>
> Sent: Friday, April 25, 2003 12:05 PM
> Subject: [avr-gcc-list] Help with interupt
> 
> 
> > Hi all,
> >
> > I have problem using interupt, i using avrgcc function SIGNAL
> > (SIG_OVERFLOW0)
> > but i have problem using it. I'am trying to use the function as time.
> > this is my program :
> >
> >
> > SIGNAL (SIG_OVERFLOW0)
> > {
> >   if (0x0000 == --time.t_count)
> >   {
> >     if ( 60 == ++time.sec )
> >     {
> >       if ( 60 == ++time.min )
> >       {
> >         if ( 24 == ++time.hour )
> >         {
> >          time.hour = 0x00;
> >         }
> >         time.min = 0x00;
> >       }
> >       time.sec = 0x00;
> >     }
> >
> >     time.t_count = 27;
> >     // Testing
> >     if (time.sec % 2)
> >       CLRBIT(PORTC,(LED3));
> >     else
> >     SETBIT(PORTC,(LED3));
> >   }
> > }
> >
> >
> > this program works perfectly, and my led is blinking !
> > but in my main program won't start at all !, it keeps looping
> > in the first line. Here my init and i'm using AT90S8535 and
> > using clock 7.372 Mhz :
> >
> >
> > void Setup(void)
> > {
> > // definition of PWM, Ports, UART and Real-Time-Clock
> >   TCCR1A  = 0xA1;         // define timer1 as 8-bit PWM
> >   TIFR    = 0x04;         // clear counter1 overflow flag
> >   TIMSK   = 0x04;         // enable counter1 overflow interrupt
> >   TCNT1   = 0x00;         // set counter1 to zero
> >   TCCR1B  = 0x00;         // PWM disabLED
> >
> >
> >   TCCR0 = 0x05;           // Timer0 enabled, divide by 1024
> >   sbi(TIMSK, 0);          // Enable TCNT0 TOF interrupt
> >
> >   PORTA  = 0x00; //prepare port A as analog input
> >   DDRA   = 0x00; // no pull ups
> >
> >   PORTC   = 0x1F;         // Prepare Port C0-C4 as input and C5-C7
> >   DDRC    = 0xE0;         // as output (LED)
> >
> >   PORTB   = 0x03; // prepare port B0-B1 as ouput (LED)
> >   DDRB    = 0x03;
> >
> >
> >   PORTD   = 0xFF;         // Turn on internal pull-ups for PORTD
> >
> >   ADCSR=0x86;         // Single A/D conversion, fCK/64
> >
> >   CHARGE_STATUS = 0x00;
> >
> >   time.sec = 0x00;
> >   time.min = 0x00;
> >   time.hour = 0x00;
> >   time.t_count = 27;
> >
> >   UART_CONTROL_REG = 0x08;
> >   UBRR = 0x03;
> >   sei();               // global interrupt enable
> > }
> >
> > and this in my main program (not all)
> >
> > int main(void)
> > {
> >   Setup();
> >          putstr("SMART BATTERY CHARGER NiMh");
> >     for (;;)
> >     {
> >        SETBIT(CHARGE_STATUS,FAST);
> >         TERMINATION = 0x00;
> >        SETBIT(PORTB,(LED0+LED1+LED2));// Turn all LEDs off
> >         SETBIT(PORTC,(LED3+LED4));
> >         while ((PINC & (1<<PC4)));          // Wait until start pushed
> >         while (!(CHKBIT(CHARGE_STATUS,ERROR)))
> >         {
> >             if ((CHKBIT(CHARGE_STATUS,FAST)) &&
> > (!(CHKBIT(CHARGE_STATUS,ERROR))))
> >             {
> >                 CLRBIT(PORTB,LED2);
> >                 TERMINATION = 0x00;
> >                 CHARGE_STATUS = 0x00;
> >                 FAST_charge();
> >                 SETBIT(CHARGE_STATUS,TRICKLE);
> >                 CLRBIT(CHARGE_STATUS,ERROR);
> >                 putstr("out");
> >             }
> >
> >
> > when i activated the SEI(); my program won't start at all ? when i pressed
> > the start button (PORTC4) the program is looping up again so it give me
> > SMART BATTERY CHARGER NiMh massage again and again as long i pressed
> > the start button ?
> >
> > but when i disabled the SEI(); my program work just fine, it works normal
> > !
> > only the time is not shown/work ? is my mistake at init ? I'm using
> > AVRGCC 3.2, or anyone can give me small function counting time using timer
> > overflow only, without using any interupt ?
> >
> > Can anyone help me ?
> >
> > Thanks....
> >
> >
> >
> > _______________________________________________
> > avr-gcc-list mailing list
> > address@hidden
> > http://www.avr1.org/mailman/listinfo/avr-gcc-list
> 

Mike "Ob3lix" hadianto