Hello
Add T0CON = 0x00 before you configure the timer, according to the
datasheet T0CON is initialized as 0xff;
If this failes I'm a little bit clueless why your code doesn't work. In
your case i would do the following.
- Take a look in the .map and or complete_program.asm file and see where
your isr was located.
- Try to see with the debugger if the counter reg inkrements to nail
down wether the problem is with the timer or with the isr configuration.
Regards,
Jan
milan schrieb:
>> Hi
>>
>> Your code looks fine. I usually use void low_isr(void) interrupt 0. Why
>> did you use 0x08?
> 0x00 gplink fails with errorcode:
> returned errorcode 256
> multiple sections using address 0
> In Compatibility mode all interrupts branch to 0x08.
>
>> Are you sure that the cpu is running? or how do you know that its not
>> getting into the isr?
> Tested with PIKLAB & ICD2 debugger.
>
>> Regards,
>>
>>
>> milan schrieb:
>>> Hi.
>>> Sorry, but I don't know how to force this little bit of code to jump
>>> into isr.
>>> Can You help?
>>>
>>> #include <pic18f1220.h>
>>> #include <delay.h>
>>>
>>> /*
>>> ----------------------------------------------------------------------- */
>>> code char at __CONFIG1H CONFIG1H = _OSC_INT_Port_on_RA6_Port_on_RA7_1H &
>>> _FCMEN_OFF_1H & _IESO_OFF_1H;
>>> code char at __CONFIG2L CONFIG2L = _PUT_OFF_2L & _BODEN_OFF_2L &
>>> _BODENV_2_0V_2L;
>>> code char at __CONFIG2H CONFIG2H = _WDT_DISABLED_CONTROLLED_2H &
>>> _WDTPS_1_32768_2H;
>>> code char at __CONFIG3H CONFIG3H = _MCLRE_MCLR_enabled_RA5_input_dis_3H;
>>> code char at __CONFIG4L CONFIG4L = _STVR_OFF_4L & _LVP_OFF_4L &
>>> _BACKBUG_OFF_4L;
>>> code char at __CONFIG5L CONFIG5L = _CP_0_OFF_5L & _CP_1_OFF_5L;
>>> code char at __CONFIG5H CONFIG5H = _CPB_OFF_5H & _CPD_OFF_5H;
>>> code char at __CONFIG6L CONFIG6L = _WRT_0_OFF_6L & _WRT_1_OFF_6L;
>>> code char at __CONFIG6H CONFIG6H = _WRTC_OFF_6H & _WRTB_OFF_6H &
>>> _WRTD_OFF_6H;
>>> code char at __CONFIG7L CONFIG7L = _EBTR_0_OFF_7L & _EBTR_1_OFF_7L;
>>> code char at __CONFIG7H CONFIG7H = _EBTRB_OFF_7H;
>>>
>>> unsigned long tmp0;
>>>
>>> static void isr(void) interrupt 0x8 { /* no priority */
>>> T0CONbits.TMR0ON = 0;
>>> PORTBbits.RB5 = 0;
>>> INTCONbits.T0IF = 0;
>>> TMR0L = 0;
>>> delay100ktcy(5);
>>> INTCONbits.T0IE = 1;
>>> T0CONbits.TMR0ON = 1;
>>> }
>>>
>>> void main() {
>>> TRISB = 0x0B; //00001011
>>> LATB = 0;
>>> ADCON1 = 0xFF; //all pins as a digital ports
>>> OSCCON = 0x6F;
>>> RCONbits.IPEN = 0; //priority levels disabled
>>> T0CONbits.T08BIT = 1; //TMR0 8 bit
>>> T0CONbits.PSA = 1; //TMR0 no prescaler
>>> T0CONbits.T0CS = 0; //TMR0 internal instruction clock cycle
>>> //INTCONbits.T0IF = 0; //clear TMR0 int flag
>>> //INTCONbits.GIE = 1; //global int enabled
>>> //INTCONbits.PEIE = 1; //peripheral int enabled
>>> //INTCONbits.T0IE = 1; //TMR0 int enabled
>>> INTCON = 0xE0; //the same as above
>>> T0CONbits.TMR0ON = 1; // TMR0
>>>
>>>
>>> while (1){
>>> PORTBbits.RB5 = 1;
>>> delay100ktcy(5);
>>> }
>>> }
>>>
>>> ------------------------------------------------------------------------------
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>> ------------------------------------------------------------------------------
>> Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT
>> is a gathering of tech-side developers & brand creativity professionals. Meet
>> the minds behind Google Creative Lab, Visual Complexity, Processing, &
>> iPhoneDevCamp asthey present alongside digital heavyweights like Barbarian
>> Group, R/GA, & Big Spaceship. http://www.creativitycat.com
>> _______________________________________________
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>> [email protected]
>> https://lists.sourceforge.net/lists/listinfo/sdcc-user
>>
>
>
> ------------------------------------------------------------------------------
> Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT
> is a gathering of tech-side developers & brand creativity professionals. Meet
> the minds behind Google Creative Lab, Visual Complexity, Processing, &
> iPhoneDevCamp asthey present alongside digital heavyweights like Barbarian
> Group, R/GA, & Big Spaceship. http://www.creativitycat.com
> _______________________________________________
> Sdcc-user mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/sdcc-user
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is a gathering of tech-side developers & brand creativity professionals. Meet
the minds behind Google Creative Lab, Visual Complexity, Processing, &
iPhoneDevCamp asthey present alongside digital heavyweights like Barbarian
Group, R/GA, & Big Spaceship. http://www.creativitycat.com
_______________________________________________
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