Functions back in main.py + lint

code/main.py

@@ -1,15 +1,65 @@
-"""Station météo connectée vers MQTT via wifi
 """
+Station météo connectée vers MQTT via wifi.
 
+A bit longer description.
 
+Args:
+    variable (type): description
+
+Returns:
+    type: description
+
+Raises:
+    Exception: description
+
+"""
+import time
+import machine
+import network
 import esp
 import bme280_i2c
 import adafruit_max31865
 from ntptime import settime
-from main_lib import *
+from umqtt.robust import MQTTClient
 import config
 
 
+def WifiConnect(ssid, psk):
+    """Connect to the wifi with given credentials."""
+    wlan = network.WLAN(network.STA_IF)
+    wlan.active(True)
+    nets = wlan.scan()
+    for net in nets:
+        net_ssid = net[0].decode()
+        if net_ssid == ssid:
+            print('Network found!')
+            wlan.connect(net_ssid, psk)
+            while not wlan.isconnected():
+                machine.idle()  # save power while waiting
+            print('WLAN connection succeeded!')
+            break
+    if not wlan.isconnected():
+        print("WLAN not found/not connected")
+    return wlan
+
+
+def now(rtc):
+    """Return a string representing date/time now."""
+    return "{0:04d}/{1:02d}/{2:02d}_{4:02d}:{5:02d}:{6:02d}".format(
+            *rtc.datetime()
+            )
+
+
+def MqttPublish(client, topic, message, retain=False, qos=0, sleep=10):
+    """MQTT publish helper."""
+    client.publish("test/{device}/{topic}".format(device=client.client_id,
+                                                  topic=topic),
+                   message,
+                   retain=retain,
+                   qos=qos)
+    time.sleep_ms(sleep)
+
+
 # Connect to WLAN
 wlan = WifiConnect(config.WIFI_SSID, config.WIFI_PSK)
 
@@ -26,22 +76,29 @@ bme.set_measurement_settings({
     'standby_time': bme280_i2c.BME280_STANDBY_TIME_500_US,
     'osr_h': bme280_i2c.BME280_OVERSAMPLING_1X,
     'osr_p': bme280_i2c.BME280_OVERSAMPLING_16X,
-    'osr_t': bme280_i2c.BME280_OVERSAMPLING_2X})
+    'osr_t': bme280_i2c.BME280_OVERSAMPLING_2X
+    })
 
 # Start the sensor automatically sensing
 bme.set_power_mode(bme280_i2c.BME280_NORMAL_MODE)
 # Conversion coeff. between measured pressure and Seau Mean-level pressure
 # Source: https://fr.wikipedia.org/wiki/Pression-altitude
-SMLP_coef=pow(1.0-((0.0065*config.ALTITUDE)/288.15), 5.255)
+SMLP_coef = pow(1.0-((0.0065*config.ALTITUDE)/288.15), 5.255)
 
 # PT100 (via max81865 module) sensor setup
-spi=machine.SPI(-1, sck=machine.Pin(14, machine.Pin.OUT), mosi=machine.Pin(13, machine.Pin.OUT), miso=machine.Pin(12, machine.Pin.OUT))
+
-spi.init(baudrate=115200, polarity=0, phase=1) #, firstbit=machine.SPI.MSB)
+spi = machine.SPI(
-max31865_cs=machine.Pin(2)
+                -1,
-max31865=adafruit_max31865.MAX31865(spi, max31865_cs)
+                sck=machine.Pin(14, machine.Pin.OUT),
+                mosi=machine.Pin(13, machine.Pin.OUT),
+                miso=machine.Pin(12, machine.Pin.OUT)
+                )
+spi.init(baudrate=115200, polarity=0, phase=1)
+max31865_cs = machine.Pin(2)
+max31865 = adafruit_max31865.MAX31865(spi, max31865_cs)
 
 # RTC setup
-rtc=machine.RTC()
+rtc = machine.RTC()
 settime()
 
 client = MQTTClient(client_id=config.CLIENT_ID,
@@ -49,23 +106,32 @@ client = MQTTClient(client_id=config.CLIENT_ID,
                     user=config.MQTT_USERNAME,
                     password=config.MQTT_PASSWD,
                     port=config.MQTT_PORT)
+client.DEBUG = True
 client.connect()
 
-MqttPublish(client, "last_boot", now(rtc))
+MqttPublish(client, "last_boot", now(rtc), retain=True, qos=1)
 MqttPublish(client, "location", config.LOCATION, retain=True, qos=1)
 MqttPublish(client, "humidity/unit", "%", retain=True)
-MqttPublish(client, "humidity/desc", "Capteur Bosch BME280", retain=True, qos=0)
+MqttPublish(client, "humidity/desc",
+            "Capteur Bosch BME280", retain=True, qos=0)
 MqttPublish(client, "pressure/unit", "hPa", retain=True, qos=0)
-MqttPublish(client, "pressure/desc", "Capteur Bosch BME280", retain=True, qos=0)
+MqttPublish(client, "pressure/desc",
+            "Capteur Bosch BME280", retain=True, qos=0)
 MqttPublish(client, "pressure2/unit", "hPa", retain=True, qos=0)
-MqttPublish(client, "pressure2/desc", "Capteur Bosch BME280 revenu au niveau de la mer", retain=True, qos=0)
+MqttPublish(client, "pressure2/desc",
+            "Capteur Bosch BME280 revenu au niveau de la mer",
+            retain=True, qos=0)
 MqttPublish(client, "temperature/unit", "degC", retain=True, qos=0)
-MqttPublish(client, "temperature/desc", "Capteur Bosch BME280", retain=True, qos=0)
+MqttPublish(client, "temperature/desc",
+            "Capteur Bosch BME280", retain=True, qos=0)
 MqttPublish(client, "temperature2/unit", "degC", retain=True, qos=0)
-MqttPublish(client, "temperature2/desc", "Sonde PT100/MAX31865", retain=True, qos=0)
+MqttPublish(client, "temperature2/desc",
+            "Sonde PT100/MAX31865", retain=True, qos=0)
 MqttPublish(client, "wifi/ssid", config.WIFI_SSID, retain=True, qos=0)
-MqttPublish(client, "wifi/ip", wlan.ifconfig()[0], retain=True, qos=0)
+MqttPublish(client, "wifi/ip", wlan.ifconfig()[0], retain=True, qos=1)
-MqttPublish(client, "sys/esp8266_device_id", "{:d}".format(esp.flash_id()), retain=True, qos=0)
+MqttPublish(client, "sys/esp8266_device_id",
+                    "{:d}".format(esp.flash_id()),
+                    retain=True, qos=1)
 
 time.sleep_ms(1000)
 
@@ -74,13 +140,13 @@ time.sleep_ms(1000)
 # - string format
 # - factor (multiplier)
 # - qos
-topics = {"time" : ["time/last_values", "{}", 1, 1],
+topics = {"time": ["time/last_values", "{}", 1, 1],
-          "humidity" : ["humidity/value", "{:.0f}", 1, 1],
+          "humidity": ["humidity/value", "{:.0f}", 1, 0],
-          "pressure" : ["pressure/value", "{:.2f}", 0.01, 1],
+          "pressure": ["pressure/value", "{:.2f}", 0.01, 0],
-          "pressure2" : ["pressure2/value", "{:.2f}", 0.01, 1],
+          "pressure2": ["pressure2/value", "{:.2f}", 0.01, 0],
-          "temperature" : ["temperature/value", "{:.1f}", 1, 1],
+          "temperature": ["temperature/value", "{:.1f}", 1, 0],
-          "temperature2" : ["temperature/value2", "{:.1f}", 1, 1],
+          "temperature2": ["temperature/value2", "{:.1f}", 1, 0],
-          "wifi_rssi" : ["wifi/rssi", "{:.0f}", 1, 1],
+          "wifi_rssi": ["wifi/rssi", "{:.0f}", 1, 0],
           }
 
 while 1: