Merge pull request #4 from FoamyGuy/scanning_and_mac_map

Scanning and mac map

Author: FoamyGuy

Diff for: adafruit_wiz.py

@@ -127,6 +127,45 @@
 MODE_SCENE = 2
 
 
+def scan(radio=None, timeout=3):
+    """
+    Scan the network for Wiz lights
+
+    :param radio: The wifi radio object
+    :param timeout: Time in seconds to wait for responses to the scan broadcast
+    :return: List of dictionaries containing info about found lights
+    """
+    if radio is None:
+        try:
+            import wifi
+        except ImportError:
+            raise RuntimeError(
+                "Must pass radio argument during initialization for non built-in wifi."
+            )
+        radio = wifi.radio
+    pool = adafruit_connection_manager.get_radio_socketpool(radio)
+    with pool.socket(pool.AF_INET, pool.SOCK_DGRAM) as scan_socket:
+        scan_socket.settimeout(timeout)
+        data = json.dumps({"method": "getPilot", "params": {}})
+        udp_message = bytes(data, "utf-8")
+
+        scan_socket.sendto(udp_message, ("255.255.255.255", 38899))
+        scan_complete = False
+        results = []
+        while not scan_complete:
+            try:
+                buf = bytearray(400)
+                data_len, (ip, port) = scan_socket.recvfrom_into(buf)
+                resp_json = json.loads(buf.rstrip(b"\x00").decode("utf-8"))
+                resp_json["ip"] = ip
+                results.append(resp_json)
+            except OSError:
+                # timeout
+                scan_complete = True
+                pass
+        return results
+
+
 class WizConnectedLight:
     """
     Helper class to control Wiz connected light over WIFI via UDP.

Diff for: examples/wiz_scan_multiple_lights.py

@@ -0,0 +1,29 @@
+# SPDX-FileCopyrightText: Copyright (c) 2024 Tim Cocks for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+"""
+Scan the network for Wiz lights. Print out the MAC addresses of any lights found.
+Set each light to a different random RGB color.
+"""
+
+import random
+
+import wifi
+
+from adafruit_wiz import WizConnectedLight, scan
+
+udp_port = 38899  # Default port is 38899
+colors = [(255, 0, 0), (0, 255, 0), (0, 0, 255), (255, 255, 0), (0, 255, 255), (255, 0, 255)]
+mac_to_light_map = {}
+
+found_lights = scan(wifi.radio, timeout=1)
+for light_info in found_lights:
+    mac_to_light_map[light_info["result"]["mac"]] = WizConnectedLight(
+        light_info["ip"], udp_port, wifi.radio
+    )
+    print(f"Found Light with MAC: {light_info['result']['mac']}")
+
+for mac, light in mac_to_light_map.items():
+    chosen_color = random.choice(colors)
+    print(f"Setting light with MAC: {mac} to {chosen_color}")
+    light.rgb_color = chosen_color