What is in the Fuses and Lock bits of original Arduino Mega2560 rev 3?

pert · August 20, 2019, 11:43am

They're defined here:

arduino/ArduinoCore-avr/blob/1.6.23/boards.txt#L207-L226


      
          mega.bootloader.low_fuses=0xFF
          mega.bootloader.unlock_bits=0x3F
          mega.bootloader.lock_bits=0x0F
          
          
mega.build.f_cpu=16000000L
          mega.build.core=arduino
          mega.build.variant=mega
          # default board may be overridden by the cpu menu
          mega.build.board=AVR_MEGA2560
          
          
## Arduino/Genuino Mega w/ ATmega2560
          ## -------------------------
          mega.menu.cpu.atmega2560=ATmega2560 (Mega 2560)
          
          
mega.menu.cpu.atmega2560.upload.protocol=wiring
          mega.menu.cpu.atmega2560.upload.maximum_size=253952
          mega.menu.cpu.atmega2560.upload.speed=115200
          
          
mega.menu.cpu.atmega2560.bootloader.high_fuses=0xD8
          mega.menu.cpu.atmega2560.bootloader.extended_fuses=0xFD

mega.bootloader.low_fuses=0xFF
mega.bootloader.unlock_bits=0x3F
mega.bootloader.lock_bits=0x0F

...

mega.menu.cpu.atmega2560.bootloader.high_fuses=0xD8
mega.menu.cpu.atmega2560.bootloader.extended_fuses=0xFD

You can just do a Tools > Burn Bootloader in the Arduino IDE to set the fuses according to those definitions.

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What is in the Fuses and Lock bits of original Arduino Mega2560 rev 3?

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