Unable to read tmc2209 UART

General Discussion
1

Basic Information:

Printer Model: Sunlu S8
MCU / Printerboard: SKR-2
klippy.log
klippy (4).log (253.3 KB)

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I have just got my Klipper setup to recognize my MCU thankfully. I have bed and hotend temp controls available as well as fan control. I have a SKR-2 using tmc2209 with the jumpers set in UART . My end stops for for X and Y report correctly, Z is always showing open since its not plugged in. my issue is the X,Y,Z, and extruder movement controls trigger a shutdown of Klipper for a unable to read the tmc uart ‘stepper x’ register ifcnt. the stepper designation of course changes to match the stepper as I try other steppers. as you can see in the klippy log I have tried to set uart address as either 1,2,3,0, attempting to get one of 4 steppers working. I am new to both Klipper and setting up cfg files so please understand i am learning as I go and may not understand what you may ask to help diagnose. thanks in advance for any help.

2

Klipper does not verify UART communication on startup. Use DUMP_TMC STEPPER=<name> to verify that UART is working correctly. To start. try to wire UART to just one stepper, use above command to verify that it’s wired/configured correctly.

https://www.klipper3d.org/G-Codes.html#dump_tmc