klipper-dgus/klippy/extras/idle_timeout.py

94 lines
3.8 KiB
Python

# Support for disabling the printer on an idle timeout
#
# Copyright (C) 2018 Kevin O'Connor <kevin@koconnor.net>
#
# This file may be distributed under the terms of the GNU GPLv3 license.
DEFAULT_IDLE_GCODE = """
TURN_OFF_HEATERS
M84
"""
PIN_MIN_TIME = 0.100
READY_TIMEOUT = .500
class IdleTimeout:
def __init__(self, config):
self.printer = config.get_printer()
self.reactor = self.printer.get_reactor()
self.gcode = self.printer.lookup_object('gcode')
self.toolhead = self.timeout_timer = None
self.state = "Idle"
self.idle_timeout = config.getfloat('timeout', 600., above=0.)
self.idle_gcode = config.get('gcode', DEFAULT_IDLE_GCODE).split('\n')
def printer_state(self, state):
if state == 'ready':
self.toolhead = self.printer.lookup_object('toolhead')
self.timeout_timer = self.reactor.register_timer(
self.timeout_handler)
self.printer.register_event_handler("toolhead:sync_print_time",
self.handle_sync_print_time)
def transition_idle_state(self, eventtime):
self.state = "Printing"
try:
res = self.gcode.process_batch(self.idle_gcode)
except:
logging.exception("idle timeout gcode execution")
return eventtime + 1.
if not res:
# Raced with incoming g-code commands
return eventtime + 1.
print_time = self.toolhead.get_last_move_time()
self.state = "Idle"
self.printer.send_event("idle_timeout:idle", print_time)
return self.reactor.NEVER
def check_idle_timeout(self, eventtime):
# Make sure toolhead class isn't busy
print_time, est_print_time, lookahead_empty = self.toolhead.check_busy(
eventtime)
idle_time = est_print_time - print_time
if not lookahead_empty or idle_time < 1.:
# Toolhead is busy
return eventtime + self.idle_timeout
if idle_time < self.idle_timeout:
# Wait for idle timeout
return eventtime + self.idle_timeout - idle_time
if not self.gcode.process_batch([]):
# Gcode class busy
return eventtime + 1.
# Idle timeout has elapsed
return self.transition_idle_state(eventtime)
def timeout_handler(self, eventtime):
if self.state == "Ready":
return self.check_idle_timeout(eventtime)
# Check if need to transition to "ready" state
print_time, est_print_time, lookahead_empty = self.toolhead.check_busy(
eventtime)
buffer_time = min(2., print_time - est_print_time)
if not lookahead_empty:
# Toolhead is busy
return eventtime + READY_TIMEOUT + max(0., buffer_time)
if buffer_time > -READY_TIMEOUT:
# Wait for ready timeout
return eventtime + READY_TIMEOUT + buffer_time
if not self.gcode.process_batch([]):
# Gcode class busy
return eventtime + READY_TIMEOUT
# Transition to "ready" state
self.state = "Ready"
self.printer.send_event("idle_timeout:ready",
est_print_time + PIN_MIN_TIME)
return eventtime + self.idle_timeout
def handle_sync_print_time(self, curtime, print_time, est_print_time):
if self.state == "Printing":
return
# Transition to "printing" state
self.state = "Printing"
check_time = READY_TIMEOUT + print_time - est_print_time
self.reactor.update_timer(self.timeout_timer, curtime + check_time)
self.printer.send_event("idle_timeout:printing",
est_print_time + PIN_MIN_TIME)
def load_config(config):
return IdleTimeout(config)