wificonf: add auto_connect.py

internal_filesystem/builtin/apps/com.example.wificonf/assets/auto_connect.py

@@ -0,0 +1,75 @@
+# Automatically connect to the WiFi, based on the saved networks
+
+import network
+import ujson
+import os
+import time
+
+
+access_points={}
+
+
+def load_config():
+    print("load_config: Checking for /data directory")
+    try:
+        os.stat('/data')
+        print("load_config: /data exists")
+    except OSError:
+        print("load_config: Creating /data directory")
+        os.mkdir('/data')
+    print("load_config: Checking for /data/com.example.wificonf directory")
+    try:
+        os.stat('/data/com.example.wificonf')
+        print("load_config: /data/com.example.wificonf exists")
+    except OSError:
+        print("load_config: Creating /data/com.example.wificonf directory")
+        os.mkdir('/data/com.example.wificonf')
+    print("load_config: Loading config from conf.json")
+    try:
+        with open('/data/com.example.wificonf/conf.json','r') as f:
+            global access_points
+            access_points=ujson.load(f)
+            print(f"load_config: Loaded access_points: {access_points}")
+    except OSError:
+        access_points={}
+        print("load_config: No config file found, using empty access_points")
+
+
+def auto_connect():
+    # TODO: scan for wifi networks first, and only try to connect to the ones that are found
+    print("auto_connect: Attempting to connect to known networks")
+    for ssid,password in access_points.items():
+        print(f"auto_connect: Trying SSID: {ssid}")
+        if attempt_connecting(ssid,password):
+            print(f"auto_connect: Connected to {ssid}")
+            return True
+    print("auto_connect: No known networks connected")
+    return False
+
+
+def attempt_connecting(ssid,password):
+    print(f"attempt_connecting: Attempting to connect to SSID: {ssid}")
+    try:
+        wlan.connect(ssid,password)
+        for i in range(10):
+            if wlan.isconnected():
+                print(f"attempt_connecting: Connected to {ssid} after {i+1} seconds")
+                return True
+            print(f"attempt_connecting: Waiting for connection, attempt {i+1}/10")
+            time.sleep(1)
+        print(f"attempt_connecting: Failed to connect to {ssid}")
+        return False
+    except Exception as e:
+        print(f"attempt_connecting: Connection error: {e}")
+        return False
+
+print("auto_connect.py running...")
+load_config()
+
+wlan=network.WLAN(network.STA_IF)
+wlan.active(True)
+
+if auto_connect():
+    print("WiFi auto-connect managed to connect.")
+else:
+    print("WiFi auto connect did not manage to connect.")

internal_filesystem/builtin/apps/com.example.wificonf/assets/wificonf.py

@@ -88,18 +88,6 @@ def attempt_connecting(ssid,password):
         show_error("Connection failed")
         return False
 
-def auto_connect():
-    # scan for wifi networks
-    # for each one that is known, try to connect
-    print("auto_connect: Attempting to connect to known networks")
-    for ssid,password in access_points.items():
-        print(f"auto_connect: Trying SSID: {ssid}")
-        if attempt_connecting(ssid,password):
-            print(f"auto_connect: Connected to {ssid}")
-            return True
-    print("auto_connect: No known networks connected")
-    return False
-
 def show_error(message):
     print(f"show_error: Displaying error: {message}")
     global error_label

internal_filesystem/main.py

@@ -355,6 +355,10 @@ def start_app(app_dir, is_launcher=False):
 # Execute this if it exists
 execute_script_new_thread("/autorun.py", True, False, False)
 
+# A generic "start at boot" mechanism hasn't been implemented yet, so do it like this:
+execute_script_new_thread("/builtin/apps/com.example.wificonf/assets/auto_connect.py", True, False, False)
+
+
 try:
     import freezefs_mount_builtin
 except Exception as e: