gnupic: hiccoughs on the learning curve.
Subject:
Re: hiccoughs on the learning curve.
From:
Declan Moriarty ####@####.####
Date:
30 Sep 2002 09:17:15 -0000
Message-Id: <02093011005403.00836@genius.chateau.dec>
Was it Ralf Forsberg who wrote on Saturday 28 September 2002 13:43:
> >
> > I opened the docs, and chased through with Acroread (for linux of course)
> > as it's search is good. I failed to find that one. Might be me.
>
> What did you not find? I see the frequency command is not in the docs,
> but try entering 'help frequency' at the gpsim prompt.
>
> gpsim> help frequency
>
> frequency [value]
> This command sets the clock frequency. By default gpsim uses 4 MHz
> as clock. The clock frequency is used to compute time in seconds.
> Use this command to adjust this value.
> If no value is provided this command prints the current clock.
> Note that PICs have an instruction clock that's a forth of the
> external clock. This value is the external clock.
>
> If you want to change the frequency more permanently you can create
> a .stc file that contains the command.
>
> > > > Put a window for the configuration on a wish list of future features.
> > >
> > > I tend to lose my notes surprisingly quick. You can put feature
> > > requests here: http://sourceforge.net/projects/gpsim
> > > (You could add an entry for the TMR1-bug there too.)
> >
> > I did. I added a few things. Although with a (seemingly immutable)
> > watchdog at 0.018 secs, a crystal speed of 32.768 khz is going to reset
> > fairly quick
> >
> > :-(
>
> You can change the watchdog period by modifying the option register.
>
> Or if you want, you can disable the watchdog in the configuration word.
> __config _wdt_off
> in your .asm file.
THANKS FOR THAT! That is one of the better kept secrets in this thing. Am I
correct I can set many of the options for the config word, with syntax such
as that in the .asm file? Does gpasm then write a config word? Where can
I find the syntax for any other settable options?
I grepped around once I had the answer and found an 'obvious' example in an
'obvious' place /usr/src/gpsim-0.20.14/examples/14bit/p16f877_test2.asm
--
Regards,
Declan Moriarty
Applied Researches - Ireland's Foremost Electronic Hardware Genius
A Slightly Serious(TM) Company
Without the optimist, the pessimist wouldn't know how happy he isn't
