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I am using atmega8535 which has an internal clock but i don't want to
use it , i want to use an external crystal .

I read in the data sheet that to do such process u must change CSK3->0
fuse bits .

The problem is how to change this fuse bits???



(You need to be a member of avrclub -- send a blank email to avrclub-subscribe@yahoogroups.com )

First off, what programmer are you using and what
language/assembler/compiler?

The STK-500 has buttons in the configuration window where you set the fuse
bits.

Zack

On Mon, 18 Feb 2008, ahmedsuper2008 wrote:

> I am using atmega8535 which has an internal clock but i don't want to
> use it , i want to use an external crystal .
>
> I read in the data sheet that to do such process u must change CSK3->0
> fuse bits .
>
> The problem is how to change this fuse bits???



(You need to be a member of avrclub -- send a blank email to avrclub-subscribe@yahoogroups.com )

I am using STK200 programmer which is connected to the parallel
port,language is "Avr RISC " , compiler is avr studio 4.0 and
i am using ponyprog to burn the hex file into the chip.
I didn't use STK-500 , is this a must to change the fuse bits??

Thanks in advance. :D

--- In a...@yahoogroups.com, Zack Widup wrote:
> First off, what programmer are you using and what
> language/assembler/compiler?
>
> The STK-500 has buttons in the configuration window where you set the
fuse
> bits.
>
> Zack



(You need to be a member of avrclub -- send a blank email to avrclub-subscribe@yahoogroups.com )

Yes you shall be required to configure the fuse-bits in order to use
external clock/oscillator.

If you're using PonyProg, then following link will come in very handy:

http://www.scienceprog.com/programming-avr-fuse-bits-oscillator-settings/
*Note: *Do remember that if you "Check" the check-box while changing the
fuse-bit, it means you are setting that bit to ZERO and NOT ONE which is
contrary to common-sense. So beware. It is a very common mistake people do
to confuse themselves and ultimately get themselves in more trouble, so I
caution you. The article has more details in it.

On Feb 18, 2008 11:57 PM, ahmedsuper2008 wrote:

> I am using STK200 programmer which is connected to the parallel
> port,language is "Avr RISC " , compiler is avr studio 4.0 and
> i am using ponyprog to burn the hex file into the chip.
> I didn't use STK-500 , is this a must to change the fuse bits??
>
> Thanks in advance. :D
> --- In a...@yahoogroups.com , Zack Widup
> wrote:
> >
> >
> > First off, what programmer are you using and what
> > language/assembler/compiler?
> >
> > The STK-500 has buttons in the configuration window where you set the
> fuse
> > bits.
> >
> > Zack
> >
> >
>

--
Rakesh.
http://gopchandani.wordpress.com
[Non-text portions of this message have been removed]



(You need to be a member of avrclub -- send a blank email to avrclub-subscribe@yahoogroups.com )

We don't know what programmer and program are being used to program the
chip.

It would help if everyone included full info when posting questions asking
for help, i.e. what programmer, what language is being used, what
computer/operating system, etc. Listing the code for any questionable
program would help, too.

Zack

On Thu, 21 Feb 2008, veeranjaneyulu somarouthu wrote:

> choose particular programming sw (burner sw) eg., ponyprog, in that sw, he
> will give provision for fuse bits settings and to program that fuse bits. ok
> carry on
>
> On 2/18/08, ahmedsuper2008 wrote:
>>
>> I am using atmega8535 which has an internal clock but i don't want to
>> use it , i want to use an external crystal .
>>
>> I read in the data sheet that to do such process u must change CSK3->0
>> fuse bits .
>>
>> The problem is how to change this fuse bits???
>>
> [Non-text portions of this message have been removed]



(You need to be a member of avrclub -- send a blank email to avrclub-subscribe@yahoogroups.com )

choose particular programming sw (burner sw) eg., ponyprog, in that sw, he
will give provision for fuse bits settings and to program that fuse bits. ok
carry on

On 2/18/08, ahmedsuper2008 wrote:
>
> I am using atmega8535 which has an internal clock but i don't want to
> use it , i want to use an external crystal .
>
> I read in the data sheet that to do such process u must change CSK3->0
> fuse bits .
>
> The problem is how to change this fuse bits???
>
[Non-text portions of this message have been removed]



(You need to be a member of avrclub -- send a blank email to avrclub-subscribe@yahoogroups.com )