Using extern interupt pin on the 12F675

[goingo]

but it doesnt work
thank you for any hints

[medelec35]

Hi goingo,
I have just tested on a 12F675 I had lying around and I can confirm it works as you intended.

Two things:
1) Flowcode simulator does not work for int on 12F675(can this be looked at for V5 please?) even though hardware does. The reason is Flowcode simulator uses RB0 for interrupt since this is most common pin on microcontrollers. (at least I am guessing that's the case?) But on 12F675 int is GP2 (or A2 in simulator)

2) If you are testing on EB006 programmer board, then you must have Switch connected to Port B2 and LED connected to port B7.

What I did was to have both LED board (EB004) & Switch board (EB007) connected to portB

If not using a switch board but just a single switch, then you must have a pull-down resistor connected to GP0 of chip or port B2 (if using programmer EB006) and GND. Then switch connects to GP0 and +5V

Hope this helps

Martin

[Benj]

Hello,

1) Flowcode simulator does not work for int on 12F675(can this be looked at for V5 please?) even though hardware does. The reason is Flowcode simulator uses RB0 for interrupt since this is most common pin on microcontrollers. (at least I am guessing that's the case?) But on 12F675 int is GP2 (or A2 in simulator)

I can confirm this has been fixed for v5

[goingo]

ok i understand
my environment is the same as you describe eb006 eb004 and eb007
till today i only simulate - because i searched for a little pic with ext interupt and 5 outputs and programming via flowcode - so i decided me for the 12f675
the part will arrive in the next days then ill try on hardware or wait for V5

many thanx for your fast feedback

friendly regards ingo

[medelec35]

Your welcome.

Since you are using EB006 programmer, then on page 14 of data sheet:
http://www.matrixmultimedia.com/resourc ... 6-30-7.pdf

Shows you what connections of PortB (programmer) are connected to which pins of microcontroller
This applies to 8, 14 & 20 pin devices.

Martin