Uploading working code.

main.py

@@ -3,12 +3,14 @@ import rp2
 import time
 import machine
 from machine import Pin
+from umqtt.simple import MQTTClient
 import dht
 import urequests
 import wifi_config
+import mqtt_config
 
 # Change this GPIO PIN where your DHT22 sensor is connected
-DHT_22_GPIO_PIN = 2
+DHT_22_GPIO_PIN = 3
 
 def read_cpu_temp():
     """
@@ -25,8 +27,7 @@ def read_cpu_temp():
     cpu_temp_sensor = machine.ADC(4)
     reading = cpu_temp_sensor.read_u16() * cpu_temp_conversion_factor
     temperature_c = 27 - (reading - 0.706) / 0.001721
-    temperature_f = temperature_c * 9/5. + 32
+    return temperature_c
-    return temperature_f
 
 def read_vsys():
     # Set pin 29 for the voltage reading
@@ -101,7 +102,7 @@ def read_dht_22(sensor):
     return reading_1
 
 def wlan_up(wlan):
-    print("Connecting to Wifi...")
+    print("Connoting to Wifi...")
     wlan.active(True)
     print("Wifi chip is active ... wlan.connect now")
     wlan.connect(wifi_config.HOME_WIFI_SSID, wifi_config.HOME_WIFI_PWD)
@@ -158,6 +159,8 @@ def main():
     rp2.country('US')
     wlan = network.WLAN(network.STA_IF)
     
+    mqtt_client = MQTTClient(mqtt_config.MQTT_CLIENT_ID, mqtt_config.MQTT_HOST_NAME)
+
     sensor = dht.DHT22(Pin(DHT_22_GPIO_PIN))
     
     led = machine.Pin('LED', machine.Pin.OUT)
@@ -180,27 +183,47 @@ def main():
             led_error_code(led, 3)
             continue
         
+        try:
+            mqtt_client.connect()
+            print("Connected to MQTT")
+        except Exception as e:
+            print("Trouble to connecting to MQTT: {}".format(e))
+            # Should we raise a problem vs just try it again ?
+            # raise RuntimeError('Trouble to connecting to MQTT, {}'.format(e))
+            led_error_code(led, 2)
+            continue
+        
         dht22_reading = read_dht_22(sensor)
         
         debug_str = "None"
         if dht22_reading is not None:
             temp,hum = dht22_reading
-            temp = temp * 9/5. + 32 # Convert to degF
+            temp = temp * 9/5. + 32.0
-            print("DHT22 Temp: {} ; DHT22 Humidity: {}".format(temp, hum))
+            mqtt_client.publish("m/v1/home/{}/0/temperature".format(mqtt_config.MQTT_ZONE_ID), "DHT22 Temp = {} degF".format(str(temp)), retain=True)
-
+            mqtt_client.publish("m/v1/home/{}/0/humidity".format(mqtt_config.MQTT_ZONE_ID),  "DHT22 %Hum = {} %".format(str(hum)), retain=True)
+            debug_str = "{} ; {}".format(temp, hum,)
+        
         cpu_temp = read_cpu_temp()
+        cpu_temp = cpu_temp * 9/5. +32.0
         
         print("{} ; CPU: {} ; Vsys: {}".format(debug_str, cpu_temp, vsys_volts))
         
-        print("Going sleep ...\n\n")
+        # HW Info
-        time.sleep(10)
+        mqtt_client.publish("m/v1/hw/{}/cpu/temperature".format(mqtt_config.MQTT_HW_ID), "CPU Temp = {} degF".format(str(cpu_temp)), retain=True)
+        mqtt_client.publish("m/v1/hw/{}/vsys/voltage".format(mqtt_config.MQTT_HW_ID), "CPU Voltage = {} V".format(str(vsys_volts)), retain=True)
+        mqtt_client.publish("m/v1/hw/{}/wlan/info".format(mqtt_config.MQTT_HW_ID), str(ifconfig), retain=True)
+        
+        print("Killing the MQTT Connection")
+        mqtt_client.disconnect()
+        print("Going sleep ...")
+        time.sleep(1)
         
         # Prep HW for sleep
-        #wlan.disconnect()
+        wlan.disconnect()
-        #wlan.active(False)
+        wlan.active(False)
-        #wlan.deinit()
+        wlan.deinit()
-        #machine.lightsleep(10)
+        machine.lightsleep(5000)
-        #print("Woke up ...")
+        print("Woke up ...")