The low byte value of 0xff indicates that the ATmega128 is configured to
use external oscillator. The frequency of the external oscillator is
normally 7.3728 MHz.
 
Giri

________________________________

From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
roberto pagliari
Sent: Tuesday, July 17, 2007 3:27 PM
To: [EMAIL PROTECTED]
Cc: [email protected]
Subject: Re: [Tinyos-help] atmega128 clock frequency


my actual configuration, running
uisp -dprog=data -dpart=ATmega128 --rd_fuses

gives me the following 
fuse low byte  0xff
fuse high byte 0xff
fuse extended byte 0xff
calibration byte      0xff - read only 
lock bits  0xff

BLB12 -> 1
BLB11 -> 1
BLB02 -> 1
BLB01 -> 1
LB2     -> 1
LB1     -> 1

so, is it 7.3Mhz?


On 7/17/07, roberto pagliari <[EMAIL PROTECTED]> wrote: 

        my fuse low byte is set to 0xff. this means the clock frequency
is 7.3Mhz (not 8Mhz) right?
        
        thank you in advance 
        
        
        
        On 7/17/07, Michael Schippling < [EMAIL PROTECTED]> wrote: 

                I think "change the crystal" is the only answer for the
ATMEGA. 
                It's sounds like the MSP can be overclocked in software
though.
                MS
                
                roberto pagliari wrote:
                > how can I set the clock frequency of motes
microcontroller?
                > I'm using micaz mote right now
                >
                >
                >
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