mqtt example over wifi

extras/mqtt_publish_wifi.py

@@ -0,0 +1,22 @@
+from umqtt.simple import MQTTClient
+
+def do_connect():
+    import network
+    sta_if = network.WLAN(network.STA_IF)
+    if not sta_if.isconnected():
+        print('connecting to network...')
+        sta_if.active(True)
+        sta_if.connect('ssid', 'password')
+        while not sta_if.isconnected():
+            pass
+    print('network config:', sta_if.ifconfig())
+
+
+
+do_connect()
+
+c = MQTTClient("varnalab_client","broker.hivemq.com")
+
+c.connect()
+c.publish(b"varnalab", b"здрасти")
+c.disconnect()