44 lines
1.8 KiB
Python
44 lines
1.8 KiB
Python
# Support fans that are enabled when a heater is on
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#
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# Copyright (C) 2016-2020 Kevin O'Connor <kevin@koconnor.net>
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#
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# This file may be distributed under the terms of the GNU GPLv3 license.
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from . import fan
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PIN_MIN_TIME = 0.100
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class PrinterHeaterFan:
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def __init__(self, config):
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self.printer = config.get_printer()
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self.printer.load_object(config, 'heaters')
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self.printer.register_event_handler("klippy:ready", self.handle_ready)
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self.heater_name = config.get("heater", "extruder")
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self.heater_temp = config.getfloat("heater_temp", 50.0)
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self.heaters = []
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self.fan = fan.Fan(config, default_shutdown_speed=1.)
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self.fan_speed = config.getfloat("fan_speed", 1., minval=0., maxval=1.)
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self.last_speed = 0.
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def handle_ready(self):
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pheaters = self.printer.lookup_object('heaters')
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self.heaters = [pheaters.lookup_heater(n.strip())
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for n in self.heater_name.split(',')]
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reactor = self.printer.get_reactor()
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reactor.register_timer(self.callback, reactor.monotonic()+PIN_MIN_TIME)
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def get_status(self, eventtime):
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return self.fan.get_status(eventtime)
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def callback(self, eventtime):
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speed = 0.
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for heater in self.heaters:
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current_temp, target_temp = heater.get_temp(eventtime)
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if target_temp or current_temp > self.heater_temp:
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speed = self.fan_speed
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if speed != self.last_speed:
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self.last_speed = speed
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curtime = self.printer.get_reactor().monotonic()
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print_time = self.fan.get_mcu().estimated_print_time(curtime)
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self.fan.set_speed(print_time + PIN_MIN_TIME, speed)
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return eventtime + 1.
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def load_config_prefix(config):
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return PrinterHeaterFan(config)
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