12f675_fuse_about_to_blow!

[mackrackit]

I suspect you and Henrik could code it in about five minutes!

Maybe I can now... 15 years ago would be a different story.

You are doing great! Keep at it!

Oh, forgot to mention the assignment is due Friday

[LEDave]

Hi everyone.

I've been busy on the 'assignment'.

I've got the first part going namely:

Do a "MAIN_LOOP" that will TOGGLE a LED with a button press. Every time you press a button the LED changes state.

I built a test circuit which I made a small mistake on, then having zero programming confidence quickly convinced myself I'd made a code error, turned out I'd soldered a link into the wrong place (hours wasted), grrrr.

So on my PIC12F683 GPIO.5 has a push button attached which changes an the state of an LED on GPIO.0 everytime it's pressed, so far so good, now for the tricky part....!

It's taking longer than expected so my homework may not been handed in until Monday.

Still, only 14 Years and 48 weeks to catch up with you mackrackit!

Dave

[mackrackit]

Still, only 14 Years and 48 weeks to catch up with you mackrackit!

And I am trying to catch up with Bruce...

It never ends

[LEDave]

Hi everyone.

Struggling a bit (well quite a bit actually) with the second / third parts of the project.

The brief says:

Then make a BYTE size variable and add the PBP interrupt routine for another LED. The new variable will increment a value of 1 every time the interrupt "triggers".

Ok, so what I'm trying to do here is to use the INTERRUPT flag as my counter (INTCON.2=1) I've set the prescaler at 1:256 = 65536us = 7.6HZ and set 'I' as a VAR BYTE.

My theory goes something like this:

If count (VAR BYTE 'I' incremented by the INTERRUPT flag) = 10 then TOGGLE the LED.

Here's how I'm trying to do it and where I'm falling down.

IF INTCON.2=1 ' INTERRUPT flag overflows
THEN I = I + 1  ' add 1 to the value of I.
INTCON.2=0    ' Reset the overflow flag.
IF I<=10 GOTO MAIN ' If count doesn't  = 10 loop again.
IF I =10 GOTO TOG ' If count = 10 then TOGGLE the LED.

I'm thinking at 10 'counts' at 7.6HZ should be approximately blink the LED once a second-ish.

All a bit fragmented I know but I hope what on saying is on the right tracks.

Any thoughts, pointers?

Dave

[mackrackit]

The basic interrupt routine you have worked with

    DISABLE
    TLOOP:
    'DO SOMETHING
    INTCON.2=0
    RESUME
    ENABLE

SOMETHING...
I = I + 1
IF ??? THEN
???
RESET COUNTER
ENDIF

Tick Tock...

[LEDave]

DISABLE 
TLOOP:
IF INTCON.2=1 THEN I = I + 1 :INTCON.2=0 IF I<=100 GOTO MAIN IF I =100 GOTO TOG
 tog:TOGGLE GPIO.2
 RESUME: ENABLE

That's what I was trying to fit in.

Blimmey, it's nearly Friday already

Am I close-ish.

Dave

[mackrackit]

Close-ish...

IF INTCON.2=1
is not needed in the interrupt routine, that is what send the code there in the first place.

The rest might work.
Does it??