76 lines
2.3 KiB
Python
76 lines
2.3 KiB
Python
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#!/usr/bin/env python3
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"""
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Scan the local network to see what devices are active
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"""
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import subprocess
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import sys
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import ipaddress
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def scan_network():
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"""Scan the 192.168.1.x network"""
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print("Scanning 192.168.1.0/24 network...")
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# Use nmap if available, otherwise use ping
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try:
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result = subprocess.run(['nmap', '-sn', '192.168.1.0/24'],
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capture_output=True, text=True, timeout=30)
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if result.returncode == 0:
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print("Active hosts (nmap):")
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print(result.stdout)
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else:
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print("nmap failed, trying ping scan...")
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ping_scan()
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except FileNotFoundError:
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print("nmap not found, using ping scan...")
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ping_scan()
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def ping_scan():
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"""Ping scan 192.168.1.1-254"""
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active_hosts = []
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for i in range(1, 255):
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ip = f"192.168.1.{i}"
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try:
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result = subprocess.run(['ping', '-c', '1', '-W', '1000', ip],
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capture_output=True, timeout=2)
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if result.returncode == 0:
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active_hosts.append(ip)
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print(f"✓ {ip} is active")
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except subprocess.TimeoutExpired:
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pass
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except Exception:
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pass
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print(f"\nFound {len(active_hosts)} active hosts:")
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for host in active_hosts:
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print(f" {host}")
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def check_arp():
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"""Check ARP table for RP2040-ETH"""
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print("\nChecking ARP table for RP2040-ETH...")
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try:
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result = subprocess.run(['arp', '-a'], capture_output=True, text=True)
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lines = result.stdout.split('\n')
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rp2040_found = False
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for line in lines:
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if '192.168.1.20' in line or '192.168.1.201' in line:
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print(f"Found: {line}")
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rp2040_found = True
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if not rp2040_found:
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print("RP2040-ETH not found in ARP table")
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except Exception as e:
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print(f"ARP check failed: {e}")
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if __name__ == "__main__":
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scan_network()
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check_arp()
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print("\nNext steps:")
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print("1. Check if 192.168.1.201 appears in the scan")
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print("2. Try: ping 192.168.1.201")
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print("3. Monitor serial output from RP2040-ETH for debug info")
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print("4. Check ethernet cable connection")
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