First, install samba using
sudo apt -y install samba
then append the following to /etc/samba/smb.conf
[pi] comment = pi path = /home/pi writeable = yes browseable = yes public = yes create mask = 0644 directory mask = 0755 force user = pi
and finally restart samba
:
sudo systemctl restart smbd
Now your /home/pi
will be accessible via SMB (including write access).