# This file contains common pin mappings for the BigTreeTech SKR 3.
# This board can ship with one of two chips, STM32H743 or STM32H723.
# To use this config, during "make menuconfig" enable "low-level
# options", "STM32H743" or "STM32H723", "128KiB bootloader", and "25MHz clock".
#
# SensorLess Homing -------
# https://www.klipper3d.org/TMC_Drivers.html?h=sensorless
# https://klipper.discourse.group/t/sensorless-homing-macro-suggested-in-klipper-docs/896/4
# https://www.reddit.com/r/BIGTREETECH/comments/wmkg4y/skr_3_ez_sensorless_homing/
#  - Board: put DIAG jumper for X-stepper , see user manual SKR 3 EZ
#  - Unplug: endstop for X
#  - repeat for Y
#
# See docs/Config_Reference.md for a description of parameters.

[mcu]
serial: /dev/ttyACM0

[printer]
kinematics: corexy
max_velocity: 300
max_accel: 3000
max_z_velocity: 25
max_z_accel: 100
square_corner_velocity: 5.0

[stepper_x]
step_pin: PD4
dir_pin: PD3
enable_pin: !PD6
microsteps: 64
full_steps_per_rotation:400  #set to 400 for 0.9 degree stepper
rotation_distance: 39.5475
# endstop_pin: ^!PC1  # Not with SensorlessHoming
endstop_pin = tmc2209_stepper_x:virtual_endstop
homing_speed: 20
homing_retract_dist: 0
position_endstop: -35
position_min: -35
position_max: 224

[stepper_y]
step_pin: PA15
dir_pin: PA8
enable_pin: !PD1
microsteps: 64
full_steps_per_rotation:400  #set to 400 for 0.9 degree stepper
rotation_distance: 39.5475
# endstop_pin: ^!PC3  # Not with SensorlessHoming
endstop_pin = tmc2209_stepper_y:virtual_endstop
homing_speed: 20
homing_retract_dist: 0
position_endstop: 0
position_min: 0
position_max: 360

[stepper_z]
step_pin: PE2
dir_pin: PE3
enable_pin: !PE0
microsteps: 64
full_steps_per_rotation:400  #set to 400 for 0.9 degree stepper
rotation_distance: 1.4982    #1.5063 and layers not attached
## endstop_pin: ^!PC0    # Not with BlTouch, required when using a switch as stop.
endstop_pin: probe:z_virtual_endstop
## position_endstop: 0   # Not with BlTouch, required When using a switch as stop.
position_min: -6    
position_max: 400

[extruder]
step_pin: PD15
dir_pin: !PD14
enable_pin: !PC7
microsteps: 16
full_steps_per_rotation:200  #set to 200 for 1.4 degree stepper
rotation_distance: 7.837500     
nozzle_diameter: 0.400
filament_diameter: 1.750
max_extrude_only_distance: 101
heater_pin: PB3
sensor_type: ATC Semitec 104GT-2
sensor_pin: PA2
control: pid
pid_Kp: 17.104
pid_Ki: 1.086
pid_Kd: 67.347
min_temp: 0
max_temp: 275


#[extruder1]
#step_pin: PD11
#dir_pin: PD10
#enable_pin: !PD13
#heater_pin: PB4
#sensor_pin: PA3
#...

[heater_bed]
heater_pin: PD7
sensor_type: Generic 3950
sensor_pin: PA1
control: watermark
max_delta: 1.0
min_temp: 0
max_temp: 110

[fan]
pin: PB7

#[heater_fan fan1]
#pin: PB6

#[heater_fan fan2]
#pin: PB5

######################################################################
# "RepRapDiscount 128x64 Full Graphic Smart Controller" type displays
######################################################################

[display]
lcd_type: st7920
cs_pin: EXP1_4
sclk_pin: EXP1_5
sid_pin: EXP1_3
encoder_pins: ^EXP2_3, ^EXP2_5
click_pin: ^!EXP1_2
#kill_pin: ^!EXP2_8

[output_pin beeper]
pin: EXP1_1

########################################
# EXP1 / EXP2 (display) pins
########################################

[board_pins]
aliases:
    # EXP1 header
    EXP1_1=PC5, EXP1_3=PB1, EXP1_5=PE9,  EXP1_7=PE11, EXP1_9=<GND>,
    EXP1_2=PB0, EXP1_4=PE8, EXP1_6=PE10, EXP1_8=PE12, EXP1_10=<5V>,
    # EXP2 header
    EXP2_1=PA6, EXP2_3=PE7, EXP2_5=PB2, EXP2_7=PC4,   EXP2_9=<GND>,
    EXP2_2=PA5, EXP2_4=PA4, EXP2_6=PA7, EXP2_8=<RST>, EXP2_10=<NC>

########################################
# TMC2209 configuration
########################################

[tmc2209 stepper_x]
uart_pin: PD5
run_current: 0.800
diag_pin: ^PC1
driver_SGTHRS: 105     # max 255

[tmc2209 stepper_y]
uart_pin: PD0
run_current: 0.800
diag_pin: ^PC3
driver_SGTHRS: 105     # max 255

[tmc2209 stepper_z]
uart_pin: PE1
run_current: 0.800
diag_pin:

[tmc2209 extruder]
uart_pin: PC6
run_current: 0.800
diag_pin:

#[tmc2209 extruder1]
#uart_pin: PD12
#run_current: 0.600
#diag_pin:


[gcode_macro SENSORLESS_HOME_X]
gcode:
    {% set HOME_CUR = 0.700 %}
    {% set driver_config = printer.configfile.settings['tmc2209 stepper_x'] %}
    {% set RUN_CUR = driver_config.run_current %}
    # Set current for sensorless homing
    SET_TMC_CURRENT STEPPER=stepper_x CURRENT={HOME_CUR}
    # Pause to ensure driver stall flag is clear
    G4 P2000
    # Home
    G28 X0
    # Move away
    G90
    G1 X+5 F1200
    # Set current during print
    SET_TMC_CURRENT STEPPER=stepper_x CURRENT={RUN_CUR}
	
[gcode_macro SENSORLESS_HOME_Y]
gcode:
    {% set HOME_CUR = 0.700 %}
    {% set driver_config = printer.configfile.settings['tmc2209 stepper_y'] %}
    {% set RUN_CUR = driver_config.run_current %}
    # Set current for sensorless homing
    SET_TMC_CURRENT STEPPER=stepper_y CURRENT={HOME_CUR}
    # Pause to ensure driver stall flag is clear
    G4 P2000
    # Home
    G28 Y0
    # Move away, 
    G90
    G1 Y+5 F1200
    # Set current during print
    SET_TMC_CURRENT STEPPER=stepper_y CURRENT={RUN_CUR}