Adolfo Reyna
40 lines
1.2 KiB
Python
40 lines
1.2 KiB
Python
try:
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import network
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has_network = True
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except ImportError:
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has_network = False
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class _ActiveWiFiUtil:
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def __init__(self):
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self.wlan = network.WLAN(network.STA_IF)
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self.wlan.active(True)
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def scan(self):
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"""Scans for networks and returns a list of dictionaries with ssid and rssi."""
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print("Scanning for Wi-Fi networks...")
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networks = self.wlan.scan()
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result = []
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for net in networks:
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try:
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ssid = net[0].decode('utf-8')
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except Exception:
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try:
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ssid = ''.join(chr(b) if 32 <= b < 127 else '?' for b in net[0])
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except Exception:
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ssid = "<Unknown SSID>"
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rssi = net[3]
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if ssid: # Filter out hidden/empty SSIDs
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result.append({"ssid": ssid, "rssi": rssi})
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# Sort by signal strength (RSSI) descending
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result.sort(key=lambda x: x['rssi'], reverse=True)
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return result
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class _DummyWiFiUtil:
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def __init__(self):
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print("Wi-Fi not supported on this platform.")
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def scan(self):
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return []
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WiFiUtil = _ActiveWiFiUtil if has_network else _DummyWiFiUtil
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