I'm trying to use software UART for TMC2209 steppers on a BigTreeTech v1.2 and apply that to my Robin Nano v.1.1 using Klipper firmware.
I declared a different pin for every driver and I edit my printer.cfg
in this way:
[tmc2209 stepper_x]
uart_pin: PA10
run_current: 0.75
hold_current: 0.4
stealthchop_threshold: 9999
interpolate: true
[tmc2209 stepper_y]
uart_pin: PA9
run_current: 0.75
hold_current: 0.4
stealthchop_threshold: 9999
interpolate: true
[tmc2209 stepper_z]
uart_pin: PC7
run_current: 0.75
hold_current: 0.4
stealthchop_threshold: 1
interpolate: true
[tmc2209 extruder]
uart_pin: PC13
run_current: 0.3
stealthchop_threshold: 1
interpolate: true
I watched this video
But I have this error:
Unable to read TMC UART 'extruder' register IFCNT
Why is this happening?