Method _parse_iwlist_output

wifi_manager.py:1757–1807

Parse iwlist scan output into network list for Pi Zero W2 compatibility

(self, output)

            subprocess.run(
                ['nmcli', 'dev', 'wifi', 'rescan', 'ifname', secondary],
                capture_output=True, text=True, timeout=15
            )
            # Short pause to let the radio collect results
            time.sleep(2)

            result = subprocess.run(
                ['nmcli', '-t', '-f', 'SSID,SIGNAL,SECURITY', 'dev', 'wifi', 'list', 'ifname', secondary],
                capture_output=True, text=True, timeout=15
            )

            if result.returncode != 0:
                self.ap_logger.warning(
                    f"nmcli scan on secondary {secondary} failed (rc={result.returncode}): {result.stderr}"
                )
                # Fall back to iwlist on the secondary adapter
                return self._run_iwlist_scan(
                    secondary,
                    system_profiles=system_profiles,
                    known_ssids=known_set,
                    log_target=self.ap_logger
                )

            networks = []
            for line in result.stdout.strip().split('\n'):
                if not line:
                    continue
                parts = self._parse_nmcli_terse_line(line)
                if len(parts) >= 2 and parts[0]:
                    ssid = parts[0]
                    security = parts[2] if len(parts) > 2 and parts[2] else 'Open'
                    is_known = ssid in known_set or ssid in system_profiles
                    networks.append({
                        'ssid': ssid,
                        'signal': int(parts[1]) if parts[1].isdigit() else 0,
                        'security': security,
                        'known': is_known,
                        'has_system_profile': ssid in system_profiles,
                        'scan_method': 'secondary_nmcli'
                    })

            # Deduplicate and sort by signal
            seen = set()
            unique = []
            for net in sorted(networks, key=lambda x: x['signal'], reverse=True):
                if net['ssid'] not in seen:
                    seen.add(net['ssid'])
                    unique.append(net)

            if unique:
                self.ap_logger.info(f"Secondary adapter {secondary} found {len(unique)} networks (live scan)")
            return unique

        except Exception as exc:
            self.ap_logger.warning(f"Secondary adapter scan failed on {secondary}: {exc}")