Hi @Aks ,
Out of the box no, but if you are recompiling SW yourself than it's likely doable, but we have not tested this.
voxl-px4 utilizes the DSP for it's IO on VOXL2, do the UARTs aren't exposed to Ubuntu like a normal UART (/dev/ttyHX). Instead it's a little deep in voxl-px4 at this time.
The current production release is a 1.12 based branch, called voxl-dev-1.12.
For example, the QUP2 port is defined here for the ESC:
https://github.com/modalai/px4-firmware/blob/voxl-dev-1.12/src/drivers/uart_esc/modalai_esc/modalai_esc.cpp#L42
And QUP7 is defined to be used by px4io here:
https://github.com/modalai/px4-firmware/blob/voxl-dev-1.12/platforms/qurt/src/px4/generic/generic/px4io_serial/px4io_serial.cpp#L67
For reference, I used my own graphic to remember the QUP indicies, here:
https://docs.modalai.com/voxl-px4-developer-guide/
specifically:
https://docs.modalai.com/images/voxl2/m0054-px4-block-diagram-0.4.png
Although we haven't tried this, you may be able to recompile with updates here to the QUP index and get things going that way.