def __init__(self):
# Load configuration
with open('config/config.json') as f:
config = json.load(f)
self._config = config
# Do logger
self._setup_logger()
logger.info('HardwareID={}'.format(get_cpu_id()))
# GPIOs
GPIO.setmode(GPIO.BCM)
self._go = False
self._temp_sensors = Max31850Sensors(self._config['temperature'])
self._blower_fan = BlowerFan(self._config['fan'])
# Our MQTT client
self._client = mqtt_client.Client(client_id=get_cpu_id())
# Data logger
self._data_logger = DataLogger(config['data_logger']['path'],
get_cpu_id())
# IController
self._controller = TempController(self._config, self._temp_sensors,
self._blower_fan, self._client,
self._data_logger)
self._commands = Commands(self._config, self._client,
self._data_logger)
def initialise(self):
# Initialise peripherals
self._temp_sensors.initialise()
self._blower_fan.initisalise()
# Subscribe to topics
topic = self._config['mqtt']['root_topic'] + get_cpu_id(
) + "/controller/config/desired"
self._client.message_callback_add(topic, self._message_config)
logger.info('Subscribed to {}'.format(topic))
# Subscribe to topics
topic = self._config['mqtt']['root_topic'] + get_cpu_id(
) + "/controller/state/desired"
self._client.message_callback_add(topic, self._message_state)
logger.info('Subscribed to {}'.format(topic))
# Set pid params initially
self._update_pid_params()
def _on_connect(self, client, userdata, flags, rc):
logger.info('MQTT Connected with result code ' + str(rc))
# Subscribe to our control topics now that we have a connection
root_topic = self._config['mqtt']['root_topic'] + get_cpu_id() + "/#"
client.subscribe(root_topic)
def topic(self):
root_topic = self._config['mqtt']['root_topic'] + get_cpu_id()
return root_topic
def init(self):
# Setup command topic
topic = self._config['mqtt']['root_topic'] + get_cpu_id() + "/commands"
self._client.message_callback_add(topic, self._handle_message)
logger.info('Subscribed to {}'.format(topic))