How to add support for ATmega328PB to avr-gcc and avrdude

atmega328pb.markdown

Adding support for ATmega328PB to avr-gcc and avrdude

avr-gcc

1. Download ATmega's support pack from Microchip's website

2. Unzip the relevant files

    unzip -j Atmel.ATmega_DFP.x.y.zzz.atpack \
    gcc/dev/atmega328pb/avr5/crtatmega328pb.o \
    gcc/dev/atmega328pb/avr5/libatmega328pb.a \
    include/avr/iom328pb.h
   

3. Place the .o and .a files in /usr/avr/lib/avr5/

4. Place the .h file in /usr/avr/include/avr/

5. Add the following to /usr/avr/include/avr/io.h

    #elif defined (__AVR_ATmega328PB__) || defined (__AVR_ATmega328__)
    #  include <avr/iom328pb.h>
   

All set. Ready to compile.

avrdude

Add the following to /etc/avrdude.conf, right below the definition for ATmega328P.

part parent "m328"
	id          = "m328pb";
	desc        = "ATmega328PB";
	signature   = 0x1e 0x95 0x16;

	ocdrev      = 1;
;

Happy flashing!

@samego176667 you are wrong!
when doing as described, you get exactly 3 files and it is clearly written where to put them.

https://stuvel.eu/post/2021-04-27-atmega328pb-on-gcc/ contains atmega-168pb-328pb-for-avr-gcc-10.1.0.zip