AVR-Chat

Thanks.  I'm just getting started in AVR so there's a lot
for me to learn.  My first project is to use an AT90S1200 to
read an incremental encoder and display its position on an
LED display.  Later on, I want to send that data to the
outside world; for that I will probably need an AT90S2313.
I've already done something like this with a 68HC11
(Motorola) but it wasn't useful because the 68HC11 could not
keep up with the encoder outputs.

Right now, though, I'm looking for something to program the
parts I have.  Any tips?

Erikc  - firewevr@airmail.net
///
"An Fhirinne in aghaidh an tSaoil."
"The Truth against the World."
        -- Bardic Motto


----- Original Message -----
From: "Mike Bronosky" <Mike@Bronosky.com>
To: <AVR-Chat@yahoogroups.com>
Sent: Friday, April 16, 2004 18:24
Subject: Re: [AVR-Chat] Re: keypad and mega64


> Can be set and cleared at will!
>
> ----- Original Message -----
> From: erikc <firewevr@airmail.net>
> To: <AVR-Chat@yahoogroups.com>
> Sent: Friday, April 16, 2004 11:53 AM
> Subject: Re: [AVR-Chat] Re: keypad and mega64
>
>
> > A rank newbie has a question.  These "fuses" that you
> > mention, are they one-time programmable (like a real
fuse)
> > or are they really something like an EEPROM cell that
can be
> > set and cleared at will?
> >
> > Erikc  - firewevr@airmail.net
> > ///
> > "An Fhirinne in aghaidh an tSaoil."
> > "The Truth against the World."
> >         -- Bardic Motto
> >
> >
> > ----- Original Message -----
> > From: "chris atwan" <chrisatwan2000@yahoo.com>
> > To: <AVR-Chat@yahoogroups.com>
> > Sent: Friday, April 16, 2004 14:48
> > Subject: Re: [AVR-Chat] Re: keypad and mega64
> >
> >
> > > Brian,
> > >
> > > I verified that the JTAGEN fuse is "1".  Any ideas??
> > >
> > > Chris Atwan
> > >
> > >
> > > Brian Dean <bsd@bdmicro.com> wrote:
> > > Hi Chris,
> > >
> > > On Fri, Apr 16, 2004 at 01:56:39AM -0000,
chrisatwan2000
> > wrote:
> > >
> > > > I checked my fuses with AVR Studio and the following
> > fuses are set:
> > > >
> > > > BOOTSZ=11
> > > > BODLEVEL=1
> > > > CKSEL=1111 SUT=11
> > > >
> > > > Any ideas??
> > >
> > > The above fuses are in the low fuse byte.  You want to
> > look at the
> > > "high" fuse byte - the JTAGEN bit is bit number 6.
> > >
> > > In Atmel terminalogy, a fuse is "set" or "programmed"
if
> > it is '0'.
> > > It is "unset" or "unprogrammed" if it is a "1".
However,
> > I think in
> > > AVR Studio, a check mark on the fuse setting sets it
to a
> > "0", i.e.,
> > > programs the fuse.
> > >
> > > Look at the high fuse byte, specifically bit number 6.
If
> > it is a
> > > zero, then the JTAG debugging interface is enabled.
If it
> > is a one,
> > > then it is disabled.  It is enabled by default, so
unless
> > you disabled
> > > it, it is most likely still enabled.  If it is
enabled,
> > then that
> > > would most likely explain the problems with your
program
> > not getting
> > > the expected results when using PORTF.
> > >
> > > For more info, the "Memory Programming" section of the
> > ATmega128
> > > datasheet.  The high fuse byte is described on page
292 in
> > the version
> > > I have.
> > >
> > > -Brian
> > > --
> > > Brian Dean
> > > http://www.bdmicro.com/
> > >
> > >
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