Package: arduino-core-avr Version: 1.8.3+dfsg1-1 Severity: important X-Debbugs-Cc: onit...@gmail.com
Dear Maintainer, It's not possible to update the fuse/lock bits with the included boards.txt and recent avrdude versions. avrdude used to mask unused bits for some microcontrollers, but this was changed some time ago. As a result, trying to write fuse bits into an Arduino Uno leads to the following error: $ /usr/bin/avrdude -v -patmega328p -cusbtiny -e -Ulock:w:0x3F:m avrdude: verifying ... avrdude: verification error, first mismatch at byte 0x0000 0xff != 0x3f avrdude: verification error; content mismatch The two uppermost lock bits in the ATmega328P are unused and will always read as logic 1. As a result, the following modification must be made to boards.txt: uno.name=Arduino Uno ... # original 0x3F uno.bootloader.unlock_bits=0xFF # original 0x0F uno.bootloader.lock_bits=0xCF This will make avrdude expect a logic 1 and prevent verification failure. Thank you. -- System Information: Debian Release: bullseye/sid APT prefers testing APT policy: (900, 'testing'), (500, 'unstable-debug'), (500, 'testing- debug'), (300, 'unstable'), (1, 'experimental-debug'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 5.10.0-3-amd64 (SMP w/4 CPU threads) Kernel taint flags: TAINT_USER, TAINT_WARN Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages arduino-core-avr depends on: ii avr-libc 1:2.0.0+Atmel3.6.2-1.1 ii gcc-avr 1:5.4.0+Atmel3.6.2-1+b1 arduino-core-avr recommends no packages. arduino-core-avr suggests no packages. -- no debconf information -- debsums errors found: