MyFP2W cannot connect to the focuser ("Read_backlashinenable Error Data Invalid")

[Sergey Mashchenko]

First of all, thanks for all the efforts put into creating this product!

I built a simple version of it - PCB DRV8825_M_MT_F_BT, Arduino Nano + DRV8825 + thermal sensor, no other hardware is used (no Bluetooth, buttons etc.). I used the package MyFP2_DRV8825_338. The version for myFP2W is 2.5.1.3 .

My issue is that I cannot connect to the board from myFP2W. Judging from the Log, it passes multiple tests, but then fails the backlashinenable test:

ReceiveResponse Controller response: 4255
Read_backlashinenable response = 255
Read_backlashinenable Error Data Invalid
GetConnectValues Error Data Invalid

Here is the full log: https://mashchenko.ca/pub/projects/myFP2WLog-23032025.txt

It almost feels like the code is reading bad (non-initalized) value for myfocuser.backlash_in_enabled from EEPROM. Is there a way to initialize EEPROM?

Can you please advise on what could be causing this?

[Sergey Mashchenko]

I figured this out. I had to enable all the items listed under "UOC Update on Connect", and now the controller connects.