2.0.X bugfix does not homing on delta properly + DUE USB communication - solved

Hello,
I have problem on Z tower when homing delta, it does not do bump.
On X and Y tower it works fine. Same issue was reported in Marlin 1.1.x, and it was solved in later release, but it looks in 2.0. it is back...
I'm using DUE and RADDS, delta configuration.
Other functionality is fine, moves, heaters, etc.

My setup:
#define HOMING_BUMP_MM { 5, 5, 5 } // (mm) Backoff from endstops after first bump
// For delta all values must be the same
#define HOMING_BUMP_DIVISOR { 10, 10, 10 } // Re-Bump Speed Divisor (Divides the Homing Feedrate)


One more problem I have with Arduino DUE and Marlin - connecting to computer via USB native prot works only as mass storage.
It can not be used for communication with printer (from slicer S3D or Repetier host).
May be it is my bad setup, but I would appreciate some help.

Thanks!
Lubos

Edited 1 time(s). Last edit at 03/09/2021 07:43AM by luboshort.

After few hours spent on this problem it was solved.
I setup comunication port to -1 instead of 0, and slier start to comunicate with DUE.
After sending G28 it starts to homing properly!
Even from LCD menu, which does not work before.
Magic...