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<p>
Previous: <a href="Terminal-Mode-Commands.html#Terminal-Mode-Commands" accesskey="p" rel="prev">Terminal Mode Commands</a>, Up: <a href="Terminal-Mode-Operation.html#Terminal-Mode-Operation" accesskey="u" rel="up">Terminal Mode Operation</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p>
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<a name="Terminal-Mode-Examples-1"></a>
<h3 class="section">3.2 Terminal Mode Examples</h3>
<p>Display part parameters, modify eeprom cells, perform a chip erase:
</p>
<div class="smallexample">
<table class="cartouche" border="1"><tr><td>
<pre class="smallexample">% avrdude -p m128 -c stk500 -t
avrdude: AVR device initialized and ready to accept instructions
avrdude: Device signature = 0x1e9702
avrdude: current erase-rewrite cycle count is 52 (if being tracked)
avrdude> part
>>> part
AVR Part : ATMEGA128
Chip Erase delay : 9000 us
PAGEL : PD7
BS2 : PA0
RESET disposition : dedicated
RETRY pulse : SCK
serial program mode : yes
parallel program mode : yes
Memory Detail :
Page Polled
Memory Type Paged Size Size #Pages MinW MaxW ReadBack
----------- ------ ------ ---- ------ ----- ----- ---------
eeprom no 4096 8 0 9000 9000 0xff 0xff
flash yes 131072 256 512 4500 9000 0xff 0x00
lfuse no 1 0 0 0 0 0x00 0x00
hfuse no 1 0 0 0 0 0x00 0x00
efuse no 1 0 0 0 0 0x00 0x00
lock no 1 0 0 0 0 0x00 0x00
calibration no 1 0 0 0 0 0x00 0x00
signature no 3 0 0 0 0 0x00 0x00
avrdude> dump eeprom 0 16
>>> dump eeprom 0 16
0000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
avrdude> write eeprom 0 1 2 3 4
>>> write eeprom 0 1 2 3 4
avrdude> dump eeprom 0 16
>>> dump eeprom 0 16
0000 01 02 03 04 ff ff ff ff ff ff ff ff ff ff ff ff |................|
avrdude> erase
>>> erase
avrdude: erasing chip
avrdude> dump eeprom 0 16
>>> dump eeprom 0 16
0000 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
avrdude>
</pre></td></tr></table>
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<p>Program the fuse bits of an ATmega128 (disable M103 compatibility,
enable high speed external crystal, enable brown-out detection, slowly
rising power). Note since we are working with fuse bits the -u (unsafe)
option is specified, which allows you to modify the fuse bits. First
display the factory defaults, then reprogram:
</p>
<div class="smallexample">
<table class="cartouche" border="1"><tr><td>
<pre class="smallexample">% avrdude -p m128 -u -c stk500 -t
avrdude: AVR device initialized and ready to accept instructions
avrdude: Device signature = 0x1e9702
avrdude: current erase-rewrite cycle count is 52 (if being tracked)
avrdude> d efuse
>>> d efuse
0000 fd |. |
avrdude> d hfuse
>>> d hfuse
0000 99 |. |
avrdude> d lfuse
>>> d lfuse
0000 e1 |. |
avrdude> w efuse 0 0xff
>>> w efuse 0 0xff
avrdude> w hfuse 0 0x89
>>> w hfuse 0 0x89
avrdude> w lfuse 0 0x2f
>>> w lfuse 0 0x2f
avrdude>
</pre></td></tr></table>
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Previous: <a href="Terminal-Mode-Commands.html#Terminal-Mode-Commands" accesskey="p" rel="prev">Terminal Mode Commands</a>, Up: <a href="Terminal-Mode-Operation.html#Terminal-Mode-Operation" accesskey="u" rel="up">Terminal Mode Operation</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>]</p>
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