[SOLVED] A6 and A6 pins not working on Arduino nano with Optiboot

Using Arduino Microcontrollers
1

Hi!
I just got an arduino Nano, and the first thing I did was to burn in the newest optiboot v5 bootloader.
However, all the IO pins are working, exept for A6 and A7. Why not?

My boards.txt file looks like this:

atmega328o.name= Optiboot Arduino Nano/mini (Atmega328p SMD)
atmega328o.upload.protocol=arduino
atmega328o.upload.maximum_size=32256
atmega328o.upload.speed=115200
atmega328o.bootloader.low_fuses=0xff
atmega328o.bootloader.high_fuses=0xde
atmega328o.bootloader.extended_fuses=0x05
atmega328o.bootloader.path=optiboot
atmega328o.bootloader.file=optiboot_atmega328.hex
atmega328o.bootloader.unlock_bits=0x3F
atmega328o.bootloader.lock_bits=0x0F
atmega328o.build.mcu=atmega328p
atmega328o.build.f_cpu=16000000L
atmega328o.build.core=arduino
atmega328o.build.variant=standard

I've also tried to change the build variant to eightanaloginputs, but lo luck :frowning:

2

However, all the IO pins are working, exept for A6 and A7. Why not?

A6 and A7 are different than other analog pins, they can only be used as analog inputs

3

Thanks!
I should have checed the datasheet before asking, but I thought it might be a software problem :slight_smile: