AVR-Chat

If there is a check mark in the box, the fuse is set. It is also "0".

Regards,
   JJ

On Friday, Apr 16, 2004, at 09:09 US/Eastern, chrisatwan2000 wrote:

> I thought looking at the fuses in AVR Studio was the way to check
> what fuses were set.  How do I check to see what fuses are set "0"
> and what fuses are not set "1"?
>
> Chris Atwan
>
> --- In AVR-Chat@yahoogroups.com, Brian Dean <bsd@b...> 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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