PX4 console missing

Till now I have worked with gazebo simulation and now I want to test code on my Pixhawk. If I upload PX4 firmware to my Pixhawk 2.1 using command make px4fmu-v3_default upload it’s successful. But I can find anywhere how to execute build code to get to the px4 console??

The console is accessible by connecting to the cons port on the PX4 2.1 (see attached picture). You’ll need a USB to serial adapter, similar to the PX4.

Could I use also usb port on the cube? If it works for operating with qGroundControl than probably should also for manual approach? Otherwise I meant how to open Nuttxshell. With running screen command it doesn’t work.

My understanding is that you can’t access the NuttX shell through the USB connector. That’s what the cons port is for.