WIP: MQTT combined mode

Looks a bit like it's in fahrenheit, but it is definitely messing up my
graphs!

mqtt_sensord/mqtt_sensord.py

@@ -28,6 +28,7 @@ def main():
     debug = debug or config.get('debug')
     config['debug'] = debug
 
+    esp_reset_time = config['host'].get('esp-reset-time')
     sensorlib.Sensor.configure(config['host']['name'], sys.platform)
 
     mcfg = config['mqtt']
@@ -36,6 +37,7 @@ def main():
     else:
         client_id = None
 
+    mqtt_mode = config['mqtt'].get('mode', 'split')
     mqtt = MQTTClient(mcfg['host'], mcfg['user'], mcfg['password'], client_id)
     default_mqtt_topic = mcfg.get('sensor_topic')
     print("Connected to", mqtt.host, "with default topic", default_mqtt_topic)
@@ -54,19 +56,35 @@ def main():
         print("Subscribe to", topic)
         mqtt.subscribe(topic)
 
-    last_measurement = time.time()
+    last_measurement = start_time = time.time()
     while True:
         # handle regular sensor data
         if debug:
             print("Getting values from sensors...")
-        for sensor in sensors:
-            if sensor.HAS_SENSOR_DATA:
-                data = sensor.gen_datapoint()
-                if debug:
-                    print(default_mqtt_topic, data)
-                mqtt.send_data(default_mqtt_topic, data)
+        if mqtt_mode == 'split':
+            for sensor in sensors:
+                if sensor.HAS_SENSOR_DATA:
+                    data = sensor.gen_datapoint()
+                    if debug:
+                        print(default_mqtt_topic, data)
+                    mqtt.send_data(default_mqtt_topic, data)
+                if not mqtt.is_async():
+                    mqtt.process_mqtt()
+        elif mqtt_mode == 'combined':
+            data = {
+                'hostname': config['host']['name'],
+                'platform': sys.platform,
+            }
+            for sensor in sensors:
+                if sensor.HAS_SENSOR_DATA:
+                    data[sensor.id] = sensor.get_data()
+            if debug:
+                print(default_mqtt_topic, data)
+            mqtt.send_data(default_mqtt_topic, data)
             if not mqtt.is_async():
                 mqtt.process_mqtt()
+        else:
+            raise RuntimeError("Unknown mqtt mode {}".format(mqtt_mode))
 
         if mqtt.is_async():
             time.sleep(max(0.0, time.time() + config['host']['interval'] - last_measurement))
@@ -76,6 +94,11 @@ def main():
                 time.sleep(0.1)
         last_measurement = time.time()
 
+        if sys.implementation.name == 'micropython' and esp_reset_time and \
+                last_measurement - start_time > esp_reset_time:
+            import machine
+            machine.reset()
+
 
 if __name__ == '__main__':
     main()

mqtt_sensord/mqttlib/base.py

@@ -15,3 +15,6 @@ class MQTTClientBase:
 
     def is_async(self):
         return False
+
+    def process_mqtt(self):
+        pass

mqtt_sensord/mqttlib/paho_mqtt.py

@@ -9,8 +9,13 @@ class MQTTClient(MQTTClientBase):
     def _connect(self):
         self._mqtt = mqtt.Client(self.client_id)
         self._mqtt.username_pw_set(self.user, self.password)
+        self._mqtt.on_connect = self.on_connect
         self._mqtt.connect(self.host)
 
+    def on_connect(self, *args, **kwargs):
+        #print("Connected! client={} userdata={} msg={}".format(client, userdata, msg))
+        print("Connected!", *args, **kwargs)
+
     def send_data(self, topic, data):
         self._mqtt.publish(topic, json.dumps(data))
 

mqtt_sensord/sensorlib/base.py

@@ -17,10 +17,10 @@ class Sensor(object):
     _mqtt_callbacks = {}
     HAS_SENSOR_DATA = True
 
-    def __init__(self, sensor_id, name, sensor_type, pin, description, **sensor_conf):
-        self.id = sensor_id
+    def __init__(self, id, name, type, pin, description, **sensor_conf):
+        self.id = id
         self.name = name
-        self.type = sensor_type
+        self.type = type
         self.pin = pin
         self.description = description
 
@@ -41,7 +41,7 @@ class Sensor(object):
     def get_data(self):
         raise NotImplementedError("You missed a spot!")
 
-    def gen_datapoint(self):
+    def gen_datapoint(self, legacy=True):
         return {
             'type': 'measurement',
             'tags': {

mqtt_sensord/sensorlib/esp_sensors.py

@@ -18,11 +18,18 @@ class DS18B20(Sensor):
         self.o = onewire.OneWire(machine.Pin(self.pin))
         self.ds = ds18x20.DS18X20(self.o)
         self.sID = self.ds.scan()[0]
+        self._first_measurement = True
 
     def get_data(self):
         self.ds.convert_temp()
         time.sleep(0.1)
-        return {"temp": self.ds.read_temp(self.sID)}
+        val = self.ds.read_temp(self.sID)
+        if self._first_measurement:
+            if val > 70.0:
+                val = None
+            else:
+                self._first_measurement = False
+        return {"temp": val}
 
 
 @sensor