Interrupt Or I Am Going To Die

[kunguz]

I have a problem with PORTB:4-7 interrupts ,I can actually get pic in to interrupt but can't get it out from interrupt to last process, here is my code below ; You can find schematics and ISIS simulation file which is processed in 6.9 in attachments.

PLEASE SOMEBODY HELP ,I AM BEGINING TO LOSE MY MIND!
device 16f84a
ON_INTERRUPT goto flash
intcon = %10001000
input portb.6 ' Bu pinleri sıfırladıktan sonra alıcı olarak ayarlamalısın

loop:
high porta
delayms 200
low porta
delayms 200
goto loop

disable

flash:
delayms 20
low porta
intcon.0 = 0
resume
enable

end

[SteveB]

You need to read PORTB in your ISR to clear the mismatch. Otherwise, like you have mentioned, you will never be able to get out of you ISR.

HTH,
Steve

[sayzer]

Also,

Instead of High PORTA use PORTA=255
and
Instead of LOW PORTA use PORTA=0



Note:
"...Bu pinleri sıfırladıktan sonra alıcı olarak ayarlamalısın"

anteni iyi ayarla!

---------------------------------------

[kunguz]

Thanks for replies, what I wonder is I don't know how to read portb; Can you just write down a sample code _?

Thanks in advance,

Saolasın Hocam :P

[sayzer]

Like what?

Example:

IF PORTB.6 = 0 then .....

or another one

WHILE PORTB.3 = 0
..
....
WEND

or

IF PORTB.2 = 1 AND PORTB.5 = 0 THEN .....

Etc..


These are some kind of readinds.
Make sure you make them input pin.


----------------

[kunguz]

So sorry but can you correct my code , I tried everything as in your sample code for PORTB.6 ; But can't get it out.

By the way my msn is [email protected]. (Olmadı bana burdan yardımcı olursan çok sevinirim, altı üstü bi interruptan çıkamadık)

Here is my new code below ;
device 16f84a
ON_INTERRUPT goto flash
intcon = %10001000
input portb.6 ' Bu pinleri sıfırladıktan sonra alıcı olarak ayarlamalısın

loop:
high porta
delayms 200
low porta
delayms 200
goto loop

disable

flash:
WHILE PORTb.6 = 1: WEND
intcon.0 = 0
delayms 20
low porta
CONTEXT RESTORE

end