Newbie: Trying to blink a LED

[JackPollack]

Thanks for your reply.

I tried your suggestions, but no dice.

I am not seeing any logic levels on any of the outputs (they are all tri-stated). I have tried a different chip and the second one does the same.

Any other ideas?

[paul borgmeier]

JackPollack,

The following worked great on my 16F88:

;@ DEVICE INTRC_OSC_NOCLKOUT, MCLR_OFF, PROTECT_OFF, WDT_OFF
OSCCON = $60
LOW PORTB.1
LOOP:
Toggle PORTB.1
Pause 1000
GoTo LOOP

Notice that I commented out your fuse settings. I suggest picking them in the EPIC menu until you can get it running. My best guess is that INTRC_OSC_NOCLOCKOUT is not a correct setting but I could not verify. (I use MPASM exclusively and had the fuses set as shown in the attached.) As a check, I had pin 5 tied direct to ground, pin 14 tied direct to 5V, and had an LED between pin 7 and ground. Again, Good Luck

Oh, also see: http://www.picbasic.co.uk/forum/show...ighlight=16f88

Paul Borgmeier
Salt Lake City, Utah
USA

[JackPollack]

Thanks to all that posted. I found the problem was a bad PIC programmer.
Everything is working great now.

Thanks again.

[jcleaver]

JackPollack,

The following worked great on my 16F88:

;@ DEVICE INTRC_OSC_NOCLKOUT, MCLR_OFF, PROTECT_OFF, WDT_OFF
OSCCON = $60
LOW PORTB.1
LOOP:
Toggle PORTB.1
Pause 1000
GoTo LOOP

Notice that I commented out your fuse settings. I suggest picking them in the EPIC menu until you can get it running. My best guess is that INTRC_OSC_NOCLOCKOUT is not a correct setting but I could not verify. (I use MPASM exclusively and had the fuses set as shown in the attached.) As a check, I had pin 5 tied direct to ground, pin 14 tied direct to 5V, and had an LED between pin 7 and ground. Again, Good Luck

Oh, also see: http://www.picbasic.co.uk/forum/show...ighlight=16f88

Paul Borgmeier
Salt Lake City, Utah
USA

paul
i agree intrc_osc_noclockout
does not seem corect pic manual state it has 3 noclock setting
and three osc speed 4 - 8 and adj
cant seem to find the corect syntax though

[paul borgmeier]

it turns out "INTRC_OSC_NOCLKOUT" is correct (see m16f88.inc in your pbp folder). The code I posted in this thread worked for me - 1 second delays were one second. I did not use the @ device line (hence, it is commented out) but picked them from the menu in MPLAB (I do not use PM).

I am not sure what problems you are having or what you are asking here?