def get_and_verify_hold_power(self, hold_power: Optional[float]) -> float:
"""Return the hold power to use.
If hold_power is None it will use the default_hold_power. Additionally it will verify the limits.
"""
if hold_power is None and self.config['default_hold_power']:
hold_power = self.config['default_hold_power']
if hold_power is None and self.config['max_hold_power']:
hold_power = self.config['max_hold_power']
if hold_power is None and self.config['allow_enable']:
hold_power = 1.0
if hold_power is None:
hold_power = 0.0
if hold_power and 0 > hold_power > 1:
raise AssertionError("Hold_power has to be between 0 and 1 but is {}".format(hold_power))
max_hold_power = 0 # type: float
if self.config['max_hold_power']:
max_hold_power = self.config['max_hold_power']
elif self.config['allow_enable']:
max_hold_power = 1.0
elif self.config['default_hold_power']:
max_hold_power = self.config['default_hold_power']
if hold_power > max_hold_power:
raise DriverLimitsError("Driver {} may not be enabled with hold_power {} because max_hold_power is {}".
format(self.name, hold_power, max_hold_power))
return hold_power
def get_and_verify_pulse_power(self,
pulse_power: Optional[float]) -> float:
"""Return the pulse power to use.
If pulse_power is None it will use the default_pulse_power. Additionally it will verify the limits.
"""
if pulse_power is None:
pulse_power = self.config['default_pulse_power'] if self.config[
'default_pulse_power'] is not None else 1.0
if pulse_power and 0 > pulse_power > 1:
raise AssertionError(
"Pulse power has to be between 0 and 1 but is {}".format(
pulse_power))
max_pulse_power = 0
if self.config['max_pulse_power']:
max_pulse_power = self.config['max_pulse_power']
elif self.config['default_pulse_power']:
max_pulse_power = self.config['default_pulse_power']
if pulse_power > max_pulse_power:
raise DriverLimitsError(
"Driver may {} not be pulsed with pulse_power {} because max_pulse_power is {}"
.format(self.name, pulse_power, max_pulse_power))
return pulse_power
def enable(self,
pulse_ms: int = None,
pulse_power: float = None,
hold_power: float = None):
"""Enable a driver by holding it 'on'.
Args:
pulse_ms: The number of milliseconds the driver should be
enabled for. If no value is provided, the driver will be
enabled for the value specified in the config dictionary.
pulse_power: The pulse power. A float between 0.0 and 1.0.
hold_power: The pulse power. A float between 0.0 and 1.0.
If this driver is configured with a holdpatter, then this method will use
that holdpatter to pwm pulse the driver.
If not, then this method will just enable the driver. As a safety
precaution, if you want to enable() this driver without pwm, then you
have to add the following option to this driver in your machine
configuration files:
allow_enable: True
"""
pulse_ms = self.get_and_verify_pulse_ms(pulse_ms)
pulse_power = self.get_and_verify_pulse_power(pulse_power)
hold_power = self.get_and_verify_hold_power(hold_power)
if hold_power == 0.0:
raise DriverLimitsError("Cannot enable driver with hold_power 0.0")
self.info_log(
"Enabling Driver with power %s (pulse_ms %sms and pulse_power %s)",
hold_power, pulse_ms, pulse_power)
self.hw_driver.enable(
PulseSettings(power=pulse_power, duration=pulse_ms),
HoldSettings(power=hold_power))
# inform bcp clients
self.machine.bcp.interface.send_driver_event(
action="enable",
name=self.name,
number=self.config['number'],
pulse_ms=pulse_ms,
pulse_power=pulse_power,
hold_power=hold_power)
def get_and_verify_pulse_ms(self, pulse_ms: Optional[int]) -> int:
"""Return and verify pulse_ms to use.
If pulse_ms is None return the default.
"""
if pulse_ms is None:
if self.config['default_pulse_ms'] is not None:
pulse_ms = self.config['default_pulse_ms']
else:
pulse_ms = self.machine.config['mpf']['default_pulse_ms']
if not isinstance(pulse_ms, int):
raise AssertionError("Wrong type {}".format(pulse_ms))
if 0 > pulse_ms > self.platform.features['max_pulse']:
raise AssertionError("Pulse_ms {} is not valid.".format(pulse_ms))
if self.config['max_pulse_ms'] and pulse_ms > self.config['max_pulse_ms']:
raise DriverLimitsError("Driver {} may not be pulsed with pulse_ms {} because max_pulse_ms is {}".
format(self.name, pulse_ms, self.config['max_pulse_ms']))
return pulse_ms