$ > brew install cmake ninja dfu-util

$ > mkdir $HOME/esp
$ > cd $HOME/esp

$ > git clone -b release/v4.2 --recursive https://github.com/espressif/esp-idf.git
$ > cd esp-idf

$ > $HOME/esp/esp-idf/install.sh

# Configure esp-idf
$ > . $HOME/esp/esp-idf/export.sh

# Configure WiFi settings in "AWS Configuration" ( use "s" to save and "q" to quit )
$ > idf.py menuconfig

# Compile software
$ > idf.py build

# Load software to Core2 and start monitor
$ > idf.py flash monitor