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fan: Allow the fan shutdown_speed to be configured

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Add a shutdown_speed config option to fans so that users can specify
the speed on a shutdown event.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2018-05-18 19:12:03 -04:00
parent 5712283e91
commit 2740838b2e
5 changed files with 41 additions and 25 deletions
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8
klippy/extras/fan.py
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@ -7,7 +7,7 @@
FAN_MIN_TIME = 0.100
class PrinterFan:
def __init__(self, config):
def __init__(self, config, default_shutdown_speed=0.):
self.last_fan_value = 0.
self.last_fan_time = 0.
self.max_power = config.getfloat('max_power', 1., above=0., maxval=1.)
@ -18,8 +18,10 @@ class PrinterFan:
cycle_time = config.getfloat('cycle_time', 0.010, above=0.)
hardware_pwm = config.getboolean('hardware_pwm', False)
self.mcu_fan.setup_cycle_time(cycle_time, hardware_pwm)
def set_shutdown_speed(self, speed):
self.mcu_fan.setup_start_value(0., max(0., min(self.max_power, speed)))
shutdown_speed = config.getfloat(
'shutdown_speed', default_shutdown_speed, minval=0., maxval=1.)
self.mcu_fan.setup_start_value(
0., max(0., min(self.max_power, shutdown_speed)))
def set_speed(self, print_time, value):
value = max(0., min(self.max_power, value * self.max_power))
if value == self.last_fan_value: