ESP8266 conn.py added

ESP8266/conn.py

@@ -0,0 +1,23 @@
+# Connect in station mode. Use saved parameters if possible to save flash wear
+
+import network
+import utime
+
+use_default = True
+ssid = 'my_ssid'
+pw = 'my_password'
+
+sta_if = network.WLAN(network.STA_IF)
+if use_default:
+    secs = 5
+    while secs >= 0 and not sta_if.isconnected():
+        utime.sleep(1)
+        secs -= 1
+
+# If can't use default, use specified LAN
+if not sta_if.isconnected():
+    sta_if.active(True)
+    sta_if.connect(ssid, pw)
+    while not sta_if.isconnected():
+        utime.sleep(1)
+

README.md

@@ -39,6 +39,8 @@ the same topic. Measures the round-trip delay. Adapt to suit your server address
 QOS (quality of service, 0 and 1 are supported). After 100 messages reports maximum and
 minimum delays.
 
+conn.py Connect in station mode using saved connection details where possible
+
 ## Rotary Incremental Encoder
 
 Classes for handling incremental rotary position encoders. Note that the Pyboard timers can