Unable to read tmc uart 'stepper_a' register IFCNT

Basic Information:

Printer Model: FLsun Q5
MCU / Printerboard: Robin Nano v1.3
Host / SBC: Raspberry Pi 4
klippy.log

klippy(5).log (755.1 KB)

I am trying to get my FLsun Q5 working with Klipper. I have been following this guide: https://emanuelebono.medium.com/flsun-q5-install-klipper-and-fluidd-2de2204a201c

When trying to home the printer, I get the following error message: Unable to read tmc uart ‘stepper_a’ register IFCNT

As the article suggests, I am running my X,Y and Z steppers in UART mode. I have removed the jumpers underneath the drivers and wired them as described. I assume the issue is with my config file but I am very new to this.

[stepper_a]

step_pin: PE3

dir_pin: PE2

enable_pin: !PE4

microsteps: 16

rotation_distance: 40

endstop_pin: PA15

homing_speed: 20

homing_retract_dist: 5

homing_retract_speed: 10

second_homing_speed: 2

position_endstop: 220

arm_length: 215

angle: 210

[stepper_b]

step_pin: PE0

dir_pin: PB9

enable_pin: !PE1

microsteps: 16

rotation_distance: 40

endstop_pin: PA12

angle: 330

[stepper_c]

step_pin: PB5

dir_pin: PB4

enable_pin: !PB8

microsteps: 16

rotation_distance: 40

endstop_pin: PC4

angle: 90

[tmc2209 stepper_a]

uart_pin: PC7

run_current: 1.0

hold_current: 0.5

interpolate: True

stealthchop_threshold: 160

[tmc2209 stepper_b]

uart_pin: PA3

run_current: 1.0

hold_current: 0.5

interpolate: True

stealthchop_threshold: 160

[tmc2209 stepper_c]

uart_pin: PC13

run_current: 1.0

hold_current: 0.5

interpolate: True

stealthchop_threshold: 160

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