interrupt with 16F88

[tur_bot]

General code flow when using ON_INTERRUPT's...(you mileage may vary, others do it other ways, I do it this way)...

1) resetplaceholder: 'just a placeholder

2) ------DEFINEs needed thru the program

3) DISABLE 'need to disable interrupts while actually processing an interrupt

4) CLEAR

5) ------any eeprom data, variable definitions, etc.

6) ------macro's you might be using

7) startupholder: goto skipsubs 'skip over all the commonly used subroutines

8) ON INTERRUPT GOTO INTHANDLER

9) INTHANDLER: 'process your interrupts.

10) 'check the interrupt bits, if the interrupt you want is active, reset the bit and process it

11) INTFINISH: 'I usually recheck the interrupt sources. If one of them tripped while I was processing a previous interrupt, I go back and re-process the interrupt

12) INTRESUME: RESUME 'resume AFTER you've processed the interrupt

13) 'commonly used subroutines start below here

14) commonly_used_sub_1: 'do something here and return from it

15) ..........

16) 'end of commonly used subroutines, skipsubs block for setting up registers, lcd, whatever

17) skipsubs: 'set up the PIC as required

18) mainloop: 'the main program runs here waiting to get interrupted

19) ------------more program stuffed in here.........

20) goto mainloop

21) END

hello,
i wanted to test an interrupt in a simple small code , i found a code on the internet and modified it and got this:
@ DEVICE INTRC_OSC, LVP_OFF, WDT_OFF, MCLR_OFF

DEFINE OSC 4

OSCCON=%01101000 ' INTRC = 8MHz
ANSEL=%00000000
CMCON=%00000111


OPTION_REG.6=1 'Trigger on rising edge
INTCON = %10010000 'Enable INTE
INTCON.1 = 0 'Clear RB0/INT External Interrupt Flag bit

On Interrupt Goto UpdateCounter

PORTB=0 ' PORTBs are outputs
Pause 500 ' Wait for startup
'LOW PORTB.6

loop:
low portb.6
HIGH PORTB.5
Pause 2000 ' Wait 2 second

low portb.6
LOW PORTB.5
Pause 2000 ' Wait 2 second
Goto loop ' Do it forever

Disable
UpdateCounter:
LOW PORTB.5
HIGH PORTB.6
pause 500
low portb.5
LOW PORTB.6
pause 500

INTCON.1=0 're-enable interrupts

resume
ENABLE
GOTO loop

END


the code works, but the interrupt routine doesn't work, doesn t light the led connected to pin portb.6.
I mean when the portb.0 is connected to ground the led connected to portb.5 blinks as soon as i connect the portb.0 to +5v the portb.5 stops to blink and nothing happens to portb.6 led.
can you help me on that please???
how can I use a digital signal to activate the interrupt for example, with an if statement??

if portb.0 = 1 , the interrupt is activated and the program jumps to the int subroutine and if portb.0 = 0 the program comes back to the main loop???????

thank you

[skimask]

And yet again, one very important step is missing and one not so important step is also not present...
No, your code doesn't follow my example exactly, and no, it doesn't have to follow it exactly. Mine is only an example, one of many ways to accomplish the same thing.
However, I believe in this case, if you follow the example provided, and write your code following said example, you will solve your problem.
And no, I'm not playing games with you...