Problem with A port on 18F2550

[NL2TTL]

Yes every 2 seconds

[mister_e]

Out of curiosity, which PIC programmer do you use?

could you post your compiled .HEX file?

Make sure your MCLR pin is tied to Vcc via a resistor.

Seems to work as design here...

[NL2TTL]

I'm using a ICD2 compiler.

He're is the hex file

[mister_e]

OK i got the same problem here. Are you using the same code as in POST #1 ???

One thing is sure, if i disable the Watchdog timer, it works...

[skimask]

OK i got the same problem here. Are you using the same code as in POST #1 ???

One thing is sure, if i disable the Watchdog timer, it works...

That's why I asked 'Does it show ">Start<" every 2 seconds out the serial port'...
In the picture posted earlier with all the fuses shown, the WDT prescaler is set to 1:128 and Enabled.
(Yesterday when I asked the question about the 2 seconds, I had the math worked out and it came up to about 2 seconds (give or take)...
Tonight when I do the math, I only get 1/2 second...I musta been drunk or something )

[NL2TTL]

So you guys say shut down the watchdog timer. How can i do this?
Can this be the reason that a other microprocessor board with same config and same sort of simple program hangs after a few days.

[skimask]

So you guys say shut down the watchdog timer. How can i do this?
Can this be the reason that a other microprocessor board with same config and same sort of simple program hangs after a few days.

1 - Reopen the same program you opened in Post #5 (MPLAB IDE)
2 - Left-Click on the 'Configure' menu
3 - Further click on 'Configuration Bits'
4 - Press the down arrow on your keyboard 10 times
5 - By now you should have '300003 1F Watchdog Timer Enabled' selected
6 - Left-Click on the line that is now highlighted
7 - Left-Click on the drop-down menu that appears
8 - Left-Click on the words 'Disabled-Controlled by SWDTEN bit'

2nd question - it's possible...

Or you could turn up your WDT post-scaler.

[skimask]

So you guys say shut down the watchdog timer. How can i do this?
Can this be the reason that a other microprocessor board with same config and same sort of simple program hangs after a few days.

Find your .lst file for this program. Search for the:

Main:
High Relais1
Goto Main:

block and see if there is a CLEARWDT in the middle of the loop. If not, then do like Paul said and add a CLEARWDT in the middle of the loop in your source file. That should fix it without having to mess with the config settings.
And which version of PBP are you using? Maybe that's got something to do with the problem...