Re: [avr-gcc-list] Avrdude confusion

[Steve]

On Sat, 31 Dec 2011 12:37:05 -0500
John Tucker <address@hidden> wrote:

> 
> I'm relatively new to micro programming. Friend of mine is more 
> experienced
> and we're trying to determine differences we're experiencing with
> some loops on his Mega8 vs my 328P and, yes, we've been through the
> -O options to avr-gcc. :)
> 
> In chasing down some items I used Avrdude to check fuses. However the 
> results
> seem not to be plausible. Following is my command line and thereafter
> the result of that command. Where am I making my mistake in usage?
> 
> avrdude -v -v -c arduino -P /dev/ttyACM0 -p m328p -F -U lfuse:r:-:h
Your using a serial boot loader that does not have access to the fuses,
to get the real fuses you should use the ISP interface.

Steve
> 
> avrdude: Version 5.10, compiled on May 24 2011 at 21:10:31
>          Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
>          Copyright (c) 2007-2009 Joerg Wunsch
> 
>          System wide configuration file is 
> "/usr/local/etc/avrdude.conf"
>          User configuration file is "/home/knoppix/.avrduderc"
>          User configuration file does not exist or is not a regular 
> file, skipping
> 
>          Using Port                    : /dev/ttyACM0
>          Using Programmer              : arduino
>          AVR Part                      : ATMEGA328P
>          Chip Erase delay              : 9000 us
>          PAGEL                         : PD7
>          BS2                           : PC2
>          RESET disposition             : dedicated
>          RETRY pulse                   : SCK
>          serial program mode           : yes
>          parallel program mode         : yes
>          Timeout                       : 200
>          StabDelay                     : 100
>          CmdexeDelay                   : 25
>          SyncLoops                     : 32
>          ByteDelay                     : 0
>          PollIndex                     : 3
>          PollValue                     : 0x53
>          Memory Detail                 :
> 
>                                   Block Poll
> Page Polled
>            Memory Type Mode Delay Size  Indx Paged  Size   Size
> #Pages MinW  MaxW   ReadBack
>            ----------- ---- ----- ----- ---- ------ ------ ----
> ------ ----- ----- ---------
>            eeprom        65     5     4    0 no       1024    4
> 0 3600  3600 0xff 0xff
>            flash         65     6   128    0 yes     32768  128
> 256 4500  4500 0xff 0xff
>            lfuse          0     0     0    0 no          1    0
> 0 4500  4500 0x00 0x00
>            hfuse          0     0     0    0 no          1    0
> 0 4500  4500 0x00 0x00
>            efuse          0     0     0    0 no          1    0
> 0 4500  4500 0x00 0x00
>            lock           0     0     0    0 no          1    0
> 0 4500  4500 0x00 0x00
>            calibration    0     0     0    0 no          1    0
> 0 0     0 0x00 0x00
>            signature      0     0     0    0 no          3    0
> 0 0     0 0x00 0x00
> 
>          Programmer Type : Arduino
>          Description     : Arduino
>          Hardware Version: 3
>          Firmware Version: 3.3
>          Vtarget         : 0.3 V
>          Varef           : 0.3 V
>          Oscillator      : 28.800 kHz
>          SCK period      : 3.3 us
> 
> avrdude: AVR device initialized and ready to accept instructions
> 
> Reading | ################################################## | 100% 
> 0.00s
> 
> avrdude: Device signature = 0x1e950f
> avrdude: safemode: lfuse reads as 0
> avrdude: safemode: hfuse reads as 0
> avrdude: safemode: efuse reads as 0
> avrdude: reading lfuse memory:
> 
> Reading | ################################################## | 100% 
> 0.00s
> 
> avrdude: writing output file "<stdout>"
> 0x0
> 
> avrdude: safemode: lfuse reads as 0
> avrdude: safemode: hfuse reads as 0
> avrdude: safemode: efuse reads as 0
> avrdude: safemode: Fuses OK
> 
> avrdude done.  Thank you.
> 
> TIA
> 
> John (Jack) Tucker
> address@hidden
> 
> 
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