Hi!
I'm quite new to these tools, and unfortunately I'm finding a lot of 
tutorials which are outdated. So I'm quite confused!

The goal is pretty simple.
I have a working buildroot environment on a RPi3 with bluez 5.39, 
pulseaudio 8.0 and 1.17.
I can successfully pair my smartphone and use the RPi3 as A2DP sink for 
media audio.

Now I want to enable the HFP profile too.
I dowloaded the test script in python, but I'm unsure about the steps I 
need to follow.

I guess I need to add the HF profile with sdptool and then play with the 
modems.
Please, would you help me to understand how to achieve this?

Of course, feel free to ask me any further information about my system 
or any file you need.
Thanks in advance
Best regards
Marco