# This file contains common pin mappings for the 2018 Creality
# Ender 3. To use this config, the firmware should be compiled for the
# AVR atmega1284p.

# Note, a number of Melzi boards are shipped with a bootloader that
# requires the following command to flash the board:
#  avrdude -p atmega1284p -c arduino -b 57600 -P /dev/ttyUSB0 -U out/klipper.elf.hex
# If the above command does not work and "make flash" does not work
# then one may need to flash a bootloader to the board - see the
# Klipper docs/Bootloaders.md file for more information.

# See docs/Config_Reference.md for a description of parameters.

[stepper_x]
step_pin: PD7
dir_pin: !PC5
enable_pin: !PD6
microsteps: 16
rotation_distance: 40
endstop_pin: ^PC2
position_endstop: 0
position_max: 235
homing_speed: 50

[stepper_y]
step_pin: PC6
dir_pin: !PC7
enable_pin: !PD6
microsteps: 16
rotation_distance: 40
endstop_pin: ^PC3
position_endstop: 0
position_max: 235
homing_speed: 50

[stepper_z]
step_pin: PB3
dir_pin: PB2
enable_pin: !PA5
microsteps: 16
rotation_distance: 8
endstop_pin: ^PC4
position_endstop: 0.0
position_max: 250

[extruder]
# DropEffect OmniaDrop V2.1
max_extrude_only_distance: 100.0
step_pin: PB1
dir_pin: !PB0
enable_pin: !PD6
microsteps: 16
rotation_distance: 33.683
nozzle_diameter: 0.400
filament_diameter: 1.750
gear_ratio: 5:1
heater_pin: PD5
sensor_type: EPCOS 100K B57560G104F
sensor_pin: PA7
control: pid
# tuned for stock hardware with 200 degree Celsius target
pid_Kp: 21.527
pid_Ki: 1.063
pid_Kd: 108.982
min_temp: 0
max_temp: 285

[heater_bed]
heater_pin: PD4
sensor_type: EPCOS 100K B57560G104F
sensor_pin: PA6
control: pid
# tuned for stock hardware with 50 degree Celsius target
pid_Kp: 54.027
pid_Ki: 0.770
pid_Kd: 948.182
min_temp: 0
max_temp: 130

[fan]
pin: PB4

[mcu]
serial: /dev/serial/by-id/usb-1a86_USB2.0-Serial-if00-port0
#baud: 115200

[printer]
kinematics: cartesian
max_velocity: 300
max_accel: 3000
max_z_velocity: 5
max_z_accel: 100

[display]
lcd_type: st7920
cs_pin: PA3
sclk_pin: PA1
sid_pin: PC1
encoder_pins: ^PD2, ^PD3
click_pin: ^!PC0

[virtual_sdcard]
path: ~/gcode_files

[display_status]

[pause_resume]

[gcode_macro PAUSE]
description: Pause the actual running print
rename_existing: PAUSE_BASE
# change this if you need more or less extrusion
variable_extrude: 1.0
gcode:
  ##### read E from pause macro #####
  {% set E = printer["gcode_macro PAUSE"].extrude|float %}
  ##### set park positon for x and y #####
  # default is your max posion from your printer.cfg
  {% set x_park = printer.toolhead.axis_maximum.x|float - 5.0 %}
  {% set y_park = printer.toolhead.axis_maximum.y|float - 5.0 %}
  ##### calculate save lift position #####
  {% set max_z = printer.toolhead.axis_maximum.z|float %}
  {% set act_z = printer.toolhead.position.z|float %}
  {% if act_z < (max_z - 2.0) %}
      {% set z_safe = 2.0 %}
  {% else %}
      {% set z_safe = max_z - act_z %}
  {% endif %}
  ##### end of definitions #####
  PAUSE_BASE
  G91
  {% if printer.extruder.can_extrude|lower == 'true' %}
    G1 E-{E} F2100
  {% else %}
    {action_respond_info("Extruder not hot enough")}
  {% endif %}
  {% if "xyz" in printer.toolhead.homed_axes %}
    G1 Z{z_safe} F900
    G90
    G1 X{x_park} Y{y_park} F6000
  {% else %}
    {action_respond_info("Printer not homed")}
  {% endif %} 
  
[gcode_macro RESUME]
description: Resume the actual running print
rename_existing: RESUME_BASE
gcode:
  ##### read E from pause macro #####
  {% set E = printer["gcode_macro PAUSE"].extrude|float %}
  #### get VELOCITY parameter if specified ####
  {% if 'VELOCITY' in params|upper %}
    {% set get_params = ('VELOCITY=' + params.VELOCITY)  %}
  {%else %}
    {% set get_params = "" %}
  {% endif %}
  ##### end of definitions #####
  {% if printer.extruder.can_extrude|lower == 'true' %}
    G91
    G1 E{E} F2100
  {% else %}
    {action_respond_info("Extruder not hot enough")}
  {% endif %}  
  RESUME_BASE {get_params}

[gcode_macro CANCEL_PRINT]
description: Cancel the actual running print
rename_existing: CANCEL_PRINT_BASE
gcode:
  TURN_OFF_HEATERS
  CANCEL_PRINT_BASE
  
# The print bed can move so far to the front, that the nozzle can reach the
# plastic cover of the print bed heater cable (only when the bed is moved by
# hand). By homing the Y axis before the X axis, it is ensured the nozzle will
# not melt through the plastic part.
# BEWARE: You will lose the ability to home axes individually. The printer will
# always home all axes for every G28 command.
#[homing_override]
#gcode:
# G28 Y0
# G28 X0
# G28 Z0