async def update_pump(self):
with PubSub.Subscription(self.hub, topics.TOPIC_PUMP_ON) as queue:
while True:
if await queue.get():
print("Starting pump")
await self.pi.write(self.pump_pin, 1)
else:
print("Stopping pump")
await self.pi.write(self.pump_pin, 0)
async def start_stop_brewing(self):
with PubSub.Subscription(self.hub,
topics.TOPIC_COFFEE_BUTTON) as queue:
while True:
coffee_button = await queue.get()
if coffee_button:
self.hub.publish(topics.TOPIC_START_BREW, None)
else:
self.hub.publish(topics.TOPIC_STOP_BREW, None)
async def update_solenoid(self):
with PubSub.Subscription(self.hub, topics.TOPIC_SOLENOID_OPEN) as queue:
while True:
if await queue.get():
print("Opening solenoid")
await self.pi.write(self.solenoid_pin, 1)
else:
print("Closing solenoid")
await self.pi.write(self.solenoid_pin, 0)
async def update_he_from_steam(self):
with PubSub.Subscription(self.hub, topics.TOPIC_STEAM_HE_ON) as queue:
while True:
steam_he_on = await queue.get()
if self.steam_mode:
if steam_he_on and self.he_enabled:
self.boiler.heat_on()
else:
self.boiler.heat_off()
async def maybe_update_button(self):
with PubSub.Subscription(self.hub, topics.TOPIC_BUTTON_PROXY) as queue:
while True:
(gpio, level, tick, topic) = await queue.get()
await asyncio.sleep(0.005)
new_level = await self.pi.read(gpio)
if new_level == level:
self.hub.publish(topic, level == 1)
else:
print("False button " + topic)
async def stop_brew_timer(self):
with PubSub.Subscription(self.hub, topics.TOPIC_STOP_BREW) as queue:
while True:
await queue.get()
try:
duration = time.time() - self.start_time
except TypeError:
continue
self.start_time = None
self.hub.publish(topics.TOPIC_CURRENT_BREW_START_TIME, None)
self.hub.publish(topics.TOPIC_LAST_BREW_DURATION, duration)
async def temperature_update(self):
with PubSub.Subscription(self.hub,
topics.TOPIC_ALL_TEMPERATURES) as queue:
while True:
temp_boiler, temp_group = await queue.get()
if self.profiling:
self.current_brew_data.append([
time.time(), temp_boiler, temp_group,
self.current_weight, self.current_avgpid,
self.solenoid, self.pump
])
async def start_brew(self):
with PubSub.Subscription(self.hub, topics.TOPIC_START_BREW) as queue:
while True:
await queue.get()
self.hub.publish(topics.TOPIC_SOLENOID_OPEN, True)
self.hub.publish(topics.TOPIC_PUMP_ON, True)
if self.use_preinfusion:
await asyncio.sleep(self.preinfusion_time)
self.hub.publish(topics.TOPIC_SOLENOID_OPEN, False)
self.hub.publish(topics.TOPIC_PUMP_ON, False)
await asyncio.sleep(self.dwell_time)
self.hub.publish(topics.TOPIC_SOLENOID_OPEN, True)
self.hub.publish(topics.TOPIC_PUMP_ON, True)
async def update_pid_control(self):
pid = simple_pid_fork.PID(setpoint=self.setpoint,
windup_limits=(-20, 20))
pid.tunings = self.tunings
pid.sample_time = self.temperature_update_interval
loop = asyncio.get_running_loop()
pidhist = ResizableRingBuffer(self.responsiveness)
last_advice = 0
try:
with PubSub.Subscription(
self.hub,
topics.TOPIC_AVERAGE_BOILER_TEMPERATURE) as queue:
while True:
avgtemp = await queue.get()
if self.setpoint != pid.setpoint:
pid.setpoint = self.setpoint
if self.tunings != pid.tunings:
pid.tunings = self.tunings
if self.responsiveness != pidhist.size_max:
pidhist.resize(self.responsiveness)
pidout = pid(avgtemp)
pidhist.append(pidout)
avgpid = pidhist.avg()
self.hub.publish(topics.TOPIC_PID_VALUE, pidout)
self.hub.publish(topics.TOPIC_PID_TERMS,
pid.factored_components)
now = loop.time()
# We only want to advise the HE Controller to update once per second
if now > last_advice + 1:
last_advice = now
self.hub.publish(topics.TOPIC_PID_AVERAGE_VALUE,
avgpid)
finally:
pid.reset()
async def start_profiling(self):
with PubSub.Subscription(self.hub, topics.TOPIC_START_BREW) as queue:
while True:
await queue.get()
if self.enable_weighted_shots and self.scale_connected:
self.profiling = True
self.current_brew_metadata[
'target_weight'] = self.target_weight
self.current_brew_metadata['start_time'] = time.time()
self.current_brew_metadata[
'preinfusion'] = self.preinfusion
self.current_brew_metadata[
'preinfusion_time'] = self.preinfusion_time
self.current_brew_metadata['dwell_time'] = self.dwell_time
self.current_brew_metadata['tunings'] = self.tunings
self.current_brew_metadata[
'responsiveness'] = self.responsiveness
async def weight_update(self):
with PubSub.Subscription(self.hub, topics.TOPIC_SCALE_WEIGHT) as queue:
while True:
weight = await queue.get()
self.current_weight = weight
if self.brewing and self.enable_weighted_shots:
self.previous_measurements.append((time(), weight))
self.previous_flow_rates.append(self.flow_rate())
reaction_compensation = self.previous_flow_rates.avg(
) * self.weighted_shot_reaction_time
if reaction_compensation < 0:
reaction_compensation = 0
# Disregard reaction compensations larger than 5 grams, something is obviously up here
if reaction_compensation > 5:
reaction_compensation = 0
nominal_weight = weight + reaction_compensation - self.tare_weight
if nominal_weight >= self.target_weight:
self.hub.publish(topics.TOPIC_STOP_BREW, None)
async def stop_profiling(self):
with PubSub.Subscription(self.hub, topics.TOPIC_STOP_BREW) as queue:
while True:
await queue.get()
if self.profiling:
self.current_brew_metadata['stop_time'] = time.time()
self.current_brew_metadata[
'stop_weight'] = self.current_weight
if self.dose_weight is not None:
self.current_brew_metadata['dose'] = self.dose_weight
await asyncio.sleep(self.post_brew_profiling_time)
self.current_brew_metadata[
'final_weight'] = self.current_weight
brew_data = self.current_brew_data
metadata = self.current_brew_metadata
self.reset()
self.store(brew_data, metadata)
coro.publish_authoritative()
async def safe_actuators(pi, solenoid_pin, pump_pin, he_pin):
print("Safing actuators")
await pi.write(he_pin, 0)
await pi.write(pump_pin, 0)
await pi.write(solenoid_pin, 0)
if __name__ == '__main__':
bleak_logger = logging.getLogger('bleak')
bleak_logger.setLevel(logging.WARN)
loop = asyncio.get_event_loop()
hub = PubSub.Hub()
if conf.test_hardware:
s = temperature_sensor.EmulatedSensor({})
b = boiler.EmulatedBoiler(s)
p = pump.EmulatedPump()
else:
s = temperature_sensor.Max31865Sensor(conf.boiler_temp_sensor_cs_pin,
conf.group_temp_sensor_cs_pin,
rtd_nominal_boiler=100.65,
rtd_nominal_group=101.5)
b = boiler.GpioBoiler(conf.he_pin)
p = pump.GpioPump(conf.pump_pin)
pi = apigpio_fork.Pi(loop)
address = (conf.pigpio_host, conf.pigpio_port)
async def update_ivar(self, topic, key):
with PubSub.Subscription(self.hub, topic) as queue:
while True:
setattr(self, key, await queue.get())
async def on_stop_brew(self):
with PubSub.Subscription(self.hub, topics.TOPIC_STOP_BREW) as queue:
while True:
await queue.get()
self.tare_weight = 0.0
self.brewing = False
async def stop_brew(self):
with PubSub.Subscription(self.hub, topics.TOPIC_STOP_BREW) as queue:
while True:
await queue.get()
self.hub.publish(topics.TOPIC_SOLENOID_OPEN, False)
self.hub.publish(topics.TOPIC_PUMP_ON, False)
async def start_stop_pump(self):
with PubSub.Subscription(self.hub, topics.TOPIC_WATER_BUTTON) as queue:
while True:
water_button = await queue.get()
self.hub.publish(topics.TOPIC_PUMP_ON, water_button)
async def white_button_press(self):
with PubSub.Subscription(self.hub, topics.TOPIC_WHITE_BUTTON) as queue:
while True:
await queue.get()
self.hub.publish(topics.TOPIC_USE_PREINFUSION,
not self.enable_preinfusion)
async def blue_button_press(self):
with PubSub.Subscription(self.hub, topics.TOPIC_BLUE_BUTTON) as queue:
while True:
await queue.get()
self.hub.publish(topics.TOPIC_ENABLE_WEIGHTED_SHOT,
not self.enable_weighted_shot)
async def red_button_press(self):
with PubSub.Subscription(self.hub, topics.TOPIC_RED_BUTTON) as queue:
while True:
await queue.get()
self.hub.publish(topics.TOPIC_CONNECT_TO_SCALE,
not self.keep_scale_connected)
async def printer(hub, ignored_topics=frozenset()):
with PubSub.Listener(hub) as queue:
while True:
key, msg = await queue.get()
if key not in ignored_topics:
print(f'Reader for key {key} got message: {msg}')
async def capture_dose(self):
with PubSub.Subscription(self.hub, topics.TOPIC_CAPTURE_DOSE) as queue:
while True:
await queue.get()
self.hub.publish(topics.TOPIC_DOSE, self.current_weight)
async def update_steam_mode(self):
with PubSub.Subscription(self.hub, topics.TOPIC_STEAM_BUTTON) as queue:
while True:
steam_button = await queue.get()
self.hub.publish(topics.TOPIC_STEAM_MODE, steam_button)
