def __init__(self):
self.config = BrewConfig()
self.powerstrip = PowerStrip(self.config.get("powerstrip")["url"])
self.powerstrip.all_off()
self.heatservice = HeatService()
self.simplestate = SimpleState()
self.brew_id = int(round(time.time() * 1000))
print("Brew ID:", self.brew_id)
self.init_pid()
self.receiver = IPCReceiver(BrewConfig.BRAUBAR_QUEUE)
print("opened message queue", self.receiver.name)
def __init__(self):
self.config = BrewConfig()
self.powerstrip = PowerStrip(self.config.get("powerstrip")["url"])
self.powerstrip.all_off()
self.heatservice = HeatService()
self.simplestate = SimpleState()
self.brew_id = int(round(time.time() * 1000))
print("Brew ID:", self.brew_id)
self.init_pid()
self.receiver = IPCReceiver(BrewConfig.BRAUBAR_QUEUE)
print("opened message queue", self.receiver.name)
def temp_actor(self, pid_output):
"""
switches the lan powerstrip on pid_output, if greater 0 switch PLUG_1 ON else switch OFF
:param pid_output: PID calculated output value
"""
status = PowerStrip().fetch_status()
if pid_output > 0.0 and status.get(PowerStrip.PLUG_1) == PowerStrip.OFF:
actor = HeatService.DEFAULT_TIME * (pid_output / BrewConfig.MAX)
print("powerstrip on ", pid_output, "for", actor, "sec.")
if self.alive():
pass
else:
self.start(actor)
if pid_output <= 0.0 and status.get(PowerStrip.PLUG_1) == PowerStrip.ON:
if self.alive():
self.stop()
print("stopped timer")
else:
self.switch(PowerStrip.OFF)
def temp_actor(self, pid_output):
"""
switches the lan powerstrip on pid_output, if greater 0 switch PLUG_1 ON else switch OFF
:param pid_output: PID calculated output value
"""
status = PowerStrip().fetch_status()
if pid_output > 0.0 and status.get(
PowerStrip.PLUG_1) == PowerStrip.OFF:
actor = HeatService.DEFAULT_TIME * (pid_output / BrewConfig.MAX)
print("powerstrip on ", pid_output, "for", actor, "sec.")
if self.alive():
pass
else:
self.start(actor)
if pid_output <= 0.0 and status.get(
PowerStrip.PLUG_1) == PowerStrip.ON:
if self.alive():
self.stop()
print("stopped timer")
else:
self.switch(PowerStrip.OFF)
def switch(self, state=0):
status = PowerStrip().switch(PowerStrip.PLUG_1, state)
return status
class BrewDaemon:
pid = None
temp_control = None
read_temp_socket = None
temp_event = None
brew_timer = None
brew_id = None
chart_service = None
config = None
heatservice = None
state_params = None
receiver = None
def __init__(self):
self.config = BrewConfig()
self.powerstrip = PowerStrip(self.config.get("powerstrip")["url"])
self.powerstrip.all_off()
self.heatservice = HeatService()
self.simplestate = SimpleState()
self.brew_id = int(round(time.time() * 1000))
print("Brew ID:", self.brew_id)
self.init_pid()
self.receiver = IPCReceiver(BrewConfig.BRAUBAR_QUEUE)
print("opened message queue", self.receiver.name)
def init_pid(self):
self.pid = Pid(BrewConfig.P, BrewConfig.I, BrewConfig.D)
self.pid.set_setpoint(0.0)
self.pid.set_sample_time(1000.0)
self.pid.set_output_limits(BrewConfig.MIN, BrewConfig.MAX)
def run(self):
self.state_params = self.simplestate.start()
self.pid.set_setpoint(self.state_params["temp"])
try:
old_calculation_time = None
while True:
msg_type, msg = self.receiver.receive()
print("msg_type", msg_type)
print("msg", msg)
if msg_type == TYPE_TEMP:
temp_current, sensor_id = self.convert_temp(msg)
# computes timedelta for pid
calculation_time = int(round(time.time() * 1000))
if old_calculation_time:
self.pid.set_sample_time(calculation_time -
old_calculation_time)
old_calculation_time = calculation_time
# calculates PID output value
output = self.pid.compute(temp_current)
# switches powerstrip based on output value
self.heatservice.temp_actor(output)
logging.warning({
"temp_actual": temp_current,
"change": output,
"state": self.state_params,
"sensor": sensor_id
})
timer_passed_checked = 0.0
if self.brew_timer is not None:
timer_passed_checked = self.brew_timer.passed()
log.log(temp_current, self.state_params["temp"],
output, sensor_id, self.simplestate.state,
self.brew_id, int(self.brew_timer.passed()))
else:
log.log(temp_current, self.state_params["temp"],
output, sensor_id, self.simplestate.state,
self.brew_id)
print("temp_current", temp_current, "outout", output,
"state_temp", self.state_params["temp"],
"timer_passed", timer_passed_checked)
if self.state_params["auto"] == True and self.state_params[
"temp"] - TEMP_TOLERANCE <= temp_current:
if self.brew_timer is None:
print("Start BrewTimer for ",
self.simplestate.state, "and",
self.state_params["time"], "seconds")
self.brew_timer = BrewTimer(
self.state_params["time"], self.next_state)
self.brew_timer.start()
elif msg_type == TYPE_CONTROL:
if self.brew_timer:
self.brew_timer.cancel()
self.next_state()
finally:
self.receiver.cleanup()
def next_state(self):
self.state_params = self.simplestate.next()
if self.state_params["temp"] == 0.0:
self.pid.set_mode(Pid.MANUAL)
else:
self.pid.set_mode(Pid.AUTOMATIC)
self.pid.set_setpoint(self.state_params["temp"])
self.brew_timer = None
def convert_temp(self, temp_json):
sensor_id = -1
temp_response = json.loads(temp_json)
try:
sensor_id = temp_response["id"]
temp = float(temp_response["temp"])
except ValueError:
temp = 0.0
print("Could not get correct temperature value")
return temp, sensor_id
def start_flask(self, host=HOST_IP, brew_id=None):
args = ["python3", FLASK_FILE, "--host", host]
if brew_id:
args.append("--id")
args.append(str(brew_id))
subprocess.Popen(args)
def start_sensor_server(self, host=HOST_IP, port=None):
args = ["python3", SENSOR_SERVER_FILE, host, str(port)]
subprocess.Popen(args)
def shutdown(self):
self.powerstrip.all_off()
self.powerstrip.logout()
class BrewDaemon:
pid = None
temp_control = None
read_temp_socket = None
temp_event = None
brew_timer = None
brew_id = None
chart_service = None
config = None
heatservice = None
state_params = None
receiver = None
def __init__(self):
self.config = BrewConfig()
self.powerstrip = PowerStrip(self.config.get("powerstrip")["url"])
self.powerstrip.all_off()
self.heatservice = HeatService()
self.simplestate = SimpleState()
self.brew_id = int(round(time.time() * 1000))
print("Brew ID:", self.brew_id)
self.init_pid()
self.receiver = IPCReceiver(BrewConfig.BRAUBAR_QUEUE)
print("opened message queue", self.receiver.name)
def init_pid(self):
self.pid = Pid(BrewConfig.P, BrewConfig.I, BrewConfig.D)
self.pid.set_setpoint(0.0)
self.pid.set_sample_time(1000.0)
self.pid.set_output_limits(BrewConfig.MIN, BrewConfig.MAX)
def run(self):
self.state_params = self.simplestate.start()
self.pid.set_setpoint(self.state_params["temp"])
try:
old_calculation_time = None
while True:
msg_type, msg = self.receiver.receive()
print("msg_type", msg_type)
print("msg", msg)
if msg_type == TYPE_TEMP:
temp_current, sensor_id = self.convert_temp(msg)
# computes timedelta for pid
calculation_time = int(round(time.time() * 1000))
if old_calculation_time:
self.pid.set_sample_time(calculation_time - old_calculation_time)
old_calculation_time = calculation_time
# calculates PID output value
output = self.pid.compute(temp_current)
# switches powerstrip based on output value
self.heatservice.temp_actor(output)
logging.warning(
{"temp_actual": temp_current, "change": output, "state": self.state_params,
"sensor": sensor_id})
timer_passed_checked = 0.0
if self.brew_timer is not None:
timer_passed_checked = self.brew_timer.passed()
log.log(temp_current, self.state_params["temp"], output, sensor_id, self.simplestate.state,
self.brew_id, int(self.brew_timer.passed()))
else:
log.log(temp_current, self.state_params["temp"], output, sensor_id, self.simplestate.state,
self.brew_id)
print("temp_current", temp_current, "outout", output, "state_temp", self.state_params["temp"],
"timer_passed", timer_passed_checked)
if self.state_params["auto"] == True and self.state_params[
"temp"] - TEMP_TOLERANCE <= temp_current:
if self.brew_timer is None:
print("Start BrewTimer for ", self.simplestate.state, "and", self.state_params["time"],
"seconds")
self.brew_timer = BrewTimer(self.state_params["time"], self.next_state)
self.brew_timer.start()
elif msg_type == TYPE_CONTROL:
if self.brew_timer:
self.brew_timer.cancel()
self.next_state()
finally:
self.receiver.cleanup()
def next_state(self):
self.state_params = self.simplestate.next()
if self.state_params["temp"] == 0.0:
self.pid.set_mode(Pid.MANUAL)
else:
self.pid.set_mode(Pid.AUTOMATIC)
self.pid.set_setpoint(self.state_params["temp"])
self.brew_timer = None
def convert_temp(self, temp_json):
sensor_id = -1
temp_response = json.loads(temp_json)
try:
sensor_id = temp_response["id"]
temp = float(temp_response["temp"])
except ValueError:
temp = 0.0
print("Could not get correct temperature value")
return temp, sensor_id
def start_flask(self, host=HOST_IP, brew_id=None):
args = ["python3", FLASK_FILE, "--host", host]
if brew_id:
args.append("--id")
args.append(str(brew_id))
subprocess.Popen(args)
def start_sensor_server(self, host=HOST_IP, port=None):
args = ["python3", SENSOR_SERVER_FILE, host, str(port)]
subprocess.Popen(args)
def shutdown(self):
self.powerstrip.all_off()
self.powerstrip.logout()