Hi everyone!
The easy way to create a progress bar in buildroot is now available in the document "Steps required for creating a progress bar in Linux". Follow the link below:
https://www.fs-net.de/assets/d…ommon/en/Progress_bar.pdf
The document tells user to create a new progress bar. This also covers some essential information from the parameter usage to the .ini file. Every parameter, commands have been precisely described with some beautiful pictures, so that user can have a good view of different situations.
Hope it works out without any confusions.
Feel free to contact regarding any doubts and more importantly feedbacks will be highly appreciated.
Thank you! 
