hwhich IDE use to programming the AVR microcontroller?

To program AVR micro controllers, I use XCode with a make file that uses an external build system. The external build system in avr-gcc.

To flash the uC I use the AVR Dragon (available from Mouser) and the AVRDude command line utility.

To install avr-gcc, and avrdude, I use macports.

https://www.macports.org/

so to the download page for macports:

https://www.macports.org/install.php

and follow the instructions.

Once you have the Xcode command line tools and mac points installed, you can begin installing tools.

for instance, to install, avr-gcc you open the terminal, then issue the command:

    sudo port install avr-gcc

to install avrdude issue the command on the terminal:

     sudo port install avrdude

you will also need to install:

avr-binutils

avr-libc

in both cases you need to know your admin password for your computer

Now take a look here for help getting an XCode project set up(I haven't used this but it looks good):

https://jawher.me/2014/03/21/using-xcode-avr-c/

I can also share one of my projects

what have you tried?

Install Xcode from the App Store

Then make sure the XCode command line tools are installed by following the instructions ope the mac ports web site.

Post back with what you have done

My instructions should have read:

you will also need to install using macports:

avr-binutils

avr-libc

so to install avr-binutils, use the command line command:

sudo port install air_binutils

to install ave-libc, use the command line command:

sudo port install avr-libc

Either with a virtual windows machine or BootCamp. Though if you use an Arduino, that IDE runs on Macs.