Inicializing to Interrupt World

[nuno106]

Hello Mark and thanks for your answer, but it doesn't work...

It happens the same thing, enter the first time, and after that, never enter in sleep again.

I include the "On interrupt goto..." . In this case, the first time it works as expected, but after wakeup the first time, enter in loop in subprogram "Wakeup".

If anyone coul help, i'm lost...

Thanks,
Nuno

[mark_s]

Hi

I dug up some old code I did on a pic16f819. Maybe it will help? I did not see Intcon.7 set in your code?

Place this above your variable declaration

OPTION_REG.6 = 0        'INTERUPT PORTB.0 ON 1 = RISING EDGE 0 = falling
INTCON.4 = 1            'ENABLE RBO INTERUPT

Sleep

SLEEPLOOP:
    'OPTION_REG.7 = 0        'ENABLE PULLUP RESISTORS PORTB
    INTCON.7 = 1    'ENABLE GLOBLE INTERUPTS
@ SLEEP             ;ASSEMBLY SLEEP COMMAND - TURNOFF uP CLOCK

    INTCON.7 = 0    'ON INTERUPT DISABLE GLOBLE INTERUPTS
    INTCON.1 = 0    'RESET INTERUPT FLAG

[Art]

I don’t know how PBP interrupts work, but yes you do have to clear the interrupt flag.

if INTCON.1 = 1	then		' check if portb.0 interrupt occurred
‘ do the thing you wanted portb.0 interrupt to make happen
INTCON.1 = 0			' clear portb.0 interrupt flag
endif

This is in a case where the interrupt could have been triggered by more than one event.

[nuno106]

Thanks everyone.

The major problem, was a pull down button RB0, that was not working correctly.

Thanks,
Nuno