TMC2209 Unable to read tmc uart 'stepper_x' register DRV_STATUS

[Deeelta]

Printer Model

Voron 2.4 BTT Octopus Pro 429

Extruder Type

Other

Cooling Type

Afterburner

Hi guys.

I spent 3 weekends on attempts to google out the problem, but failed...
Trying to start just built Voron 2.4 with BTT Octopus Pro 429, TMC2209. I'v tried to start with newly burned SD card without updates as well as tried to install all the updates Mainsail shows - all with same result: when checking steppers with STEPPER_BUZZ STEPPER=stepper_x command, Klipper shutdown with error "Unable to read tmc uart 'stepper_x' register DRV_STATUS". First I was sure it's because MCU really can't reach TMC2209 by Uart, so I replace 5 pcs TMC2209, checked that jumper is set accordingly to manual to make TMC working in Uart mode, tried all x, y, z, z1, z2, z3 drives - all the same; but later I found 2 interesting points: 1) on this command drive actually do the "buzz" movement up and down once, before shutdown; 2) if to read the TMC state with DUMP_TMC STEPPER=stepper_x, it actually can read the DRV_STATUS data.

Please share any ideas what else I may miss...

 

[NoGuru]

Can you tell me what spots you have the drivers in on the board?
Also can I see the printer.cfg ?

 

[Deeelta]

Can you tell me what spots you have the drivers in on the board?
Also can I see the printer.cfg ?

Using spots accordingly to official manual: the last one spot on Octopus is empty. Drivers are Chinese Chaofan factory, no any schematics is available, but if you have any idea about wrong soldering of any pins - I have multimeter to check.

 

[NoGuru]

What motors are you using? Maybe the wiring in backwards.
Config looks okay to me. Is this a 500mm printer?

 

[Deeelta]

What motors are you using? Maybe the wiring in backwards.
Config looks okay to me. Is this a 500mm printer?

Yes, 500*500*1000 printer. So I was thinking maybe because of size motors loaded too heavy, and driver stop due overloading by current - so I set it current limit to 1.6A (nothing changes). Motors are 17HS19-2004S1 from Stepperonline, with A+ A- B+ B- wires order. As I can see at Voron and Octopus documentation, motor pins are marked A1 A2 B2 B1 which looks like A+ A- B- B+, so I tried original order of wires and tried to reverse coil B wires - also nothing changes

 

[NoGuru]

I know you said you bought new drivers, did you buy the same ones or different brand?

Also did you set the jumpers in the correct spot under the drivers?

 

[Deeelta]

I know you said you bought new drivers, did you buy the same ones or different brand?

Also did you set the jumpers in the correct spot under the drivers?
View attachment 5126

I bought different, just in case. And to be even more sure about compatibility I bought right from BTT. They arrive Friday or Saturday.
Jumpers - yes, in UART mode. I tried to use (by jumpers) STEP/DIR mode, but can’t find where in settings set using that mode

 

[Deeelta]

Finally I have received drivers from BTT - they work with no issues. Compare the status they give with status Chaofang drivers give:
Chaofang: DRV_STATUS: 80190000 cs_actual=25 stst=1
BTT: DRV_STATUS: 80150000 cs_actual=21 stst=1
Can't see any logic why it doesn't work

 

[NoGuru]

At least it works! All drivers are constructed different and some have different layouts and pint outs.