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# Support fans that are controlled by gcode
#
# Copyright (C) 2016-2024 Kevin O'Connor <kevin@koconnor.net>
#
# This file may be distributed under the terms of the GNU GPLv3 license.
import logging
from . import fan, output_pin
class PrinterFanGeneric:
cmd_SET_FAN_SPEED_help = "Sets the speed of a fan"
def __init__(self, config):
self.printer = config.get_printer()
self.fan = fan.Fan(config, default_shutdown_speed=0.0)
self.fan_name = config.get_name().split()[-1]
# Template handling
self.template_eval = output_pin.lookup_template_eval(config)
gcode = self.printer.lookup_object("gcode")
gcode.register_mux_command(
"SET_FAN_SPEED",
"FAN",
self.fan_name,
self.cmd_SET_FAN_SPEED,
desc=self.cmd_SET_FAN_SPEED_help,
)
def get_status(self, eventtime):
return self.fan.get_status(eventtime)
def _template_update(self, text):
try:
value = float(text)
except ValueError as e:
logging.exception("fan_generic template render error")
value = 0.0
self.fan.set_speed(value)
def cmd_SET_FAN_SPEED(self, gcmd):
speed = gcmd.get_float("SPEED", None, 0.0)
template = gcmd.get("TEMPLATE", None)
if (speed is None) == (template is None):
raise gcmd.error("SET_FAN_SPEED must specify SPEED or TEMPLATE")
# Check for template setting
if template is not None:
self.template_eval.set_template(gcmd, self._template_update)
return
self.fan.set_speed_from_command(speed)
def load_config_prefix(config):
return PrinterFanGeneric(config)
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