3.2 Terminal Mode Examples
Display part parameters, modify eeprom cells, perform a chip erase:
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% avrdude -p m128 -c stk500 -t
avrdude: AVR device initialized and ready to accept instructions
avrdude: Device signature = 0x1e9702
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>
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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:
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% avrdude -p m128 -u -c stk500 -t
avrdude: AVR device initialized and ready to accept instructions
avrdude: Device signature = 0x1e9702
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>
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% avrdude -c pkobn_updi -p avr128db48 -t
Vtarget : 4.71 V
PDI/UPDI clock Xmega/megaAVR : 100 kHz
avrdude: AVR device initialized and ready to accept instructions
Reading | ################################################## | 100% 0.01s
avrdude: Device signature = 0x1e970c (probably avr128db48)
avrdude> write eeprom 0 1234567890 'A' 'V' 'R' 2.718282 "Hello World!"
>>> write eeprom 0 1234567890 'A' 'V' 'R' 2.718282 "Hello World!"
Warning: no size suffix specified for "1234567890". Writing 4 byte(s)
Info: Writing 24 bytes starting from address 0x00
avrdude> dump eeprom 0 32
>>> dump eeprom 0 32
0000 d2 02 96 49 41 56 52 55 f8 2d 40 48 65 6c 6c 6f |...IAVRU.-@Hello|
0010 20 57 6f 72 6c 64 21 00 ff ff ff ff ff ff ff ff | World!.........|
avrdude> q
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The following example demonstrates the second form of the write
command where the last data value provided is used to fill up the
indicated memory range.
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avrdude> write eeprom 0x00 0x20 'a' 'b' 'c' 0x11 0xcafe 0x55 ...
>>> write eeprom 0x00 0x20 'a' 'b' 'c' 0x11 0xcafe 0x55 ...
avrdude> dump eeprom 0 0x30
>>> dump eeprom 0 0x30
0000 61 62 63 11 fe ca 55 55 55 55 55 55 55 55 55 55 |abc...UUUUUUUUUU|
0010 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 |UUUUUUUUUUUUUUUU|
0020 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff |................|
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