I have an ATMEGA16 lying around that was in an old robot I'd bought. It was in a socket, so I pulled it out and was thinking of using this page to use it with Arduino IDE. Is there a way for me to backup the chip's current state, so as to be able to restore it if I mess up? I don't have an SPI programmer with me, but I do have a Arduino Uno available at hand
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Comments are not for extended discussion; this conversation has been moved to chat.VE7JRO– VE7JRO2020-05-01 18:57:21 +00:00Commented May 1, 2020 at 18:57
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A detailed how to is here its for the ATMega16 but check connections with the circuit diagram.
Use this command for backup of flash
avrdude -c avrisp2 -p m16 -P /dev/ttyUSB0 -b 115200 -U flash:r:Old_flash_backup_file.hex:h
Backup EEPROM (just in case there is something stored there)
avrdude -c avrisp2 -p m16 -P /dev/ttyUSB0 -b 115200 -U eeprom:r:eeprom_backup_file.hex:h
and this for writing the new bootloader / backup back
avrdude -c avrisp2 -p m16 -P /dev/ttyUSB0 -b 115200 -U flash:w:New_BootLoader.hex:i -v
and this for EEPROM writing back
avrdude -c avrisp2 -p m16 -P /dev/ttyUSB0 -b 115200 -U eeprom:w:new_eeprom_file.hex:h
As your avr-dude outputis
lock 0 0 0 0 no 1 0 0 9000 9000 0x00 0x00
there seems to be no lock on the chip. As you are on LINUX when reading youhave tospecify the format :h hex when reading
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Comments are not for extended discussion; this conversation has been moved to chat.VE7JRO– VE7JRO2020-05-01 18:39:41 +00:00Commented May 1, 2020 at 18:39