Quelltext /~heha/mb-iwp/Kamera/esp32cam/cam-221216.zip/WiFiMulti.cpp

/**
 *
 * @file WiFiMulti.cpp
 * @date 16.05.2015
 * @author Markus Sattler
 *
 * Copyright (c) 2015 Markus Sattler. All rights reserved.
 * This file is part of the esp8266 core for Arduino environment.
 */

#include "WiFiMulti.h"
#include <limits.h>
#include <string.h>
#include <esp32-hal.h>

bool WiFiMulti::addAP(char const*ssid, char const*pass) {
 if (!ssid) return false;
 WifiAPlist_t newAP={ssid,pass};
 APlist.push_back(newAP);
 log_i("[WIFI][APlistAdd] add SSID: %s", newAP.ssid);
 return true;
}

uint8_t WiFiMulti::run(uint32_t connectTimeout) {
 int8_t scanResult;
 uint8_t status = WiFi.status();
// Wenn mit falschem WLAN verbunden dann erst mal trennen
 if (status == WL_CONNECTED) {
  if (std::find(APlist.begin(),APlist.end(),WiFi.SSID.c_str())!=APlist.end()) return status;
  WiFi.disconnect(false,false);
  delay(10);
  status = WiFi.status();
 }
// Oh hoppla, das ist ja synchron!!
 scanResult = WiFi.scanNetworks();
 if (scanResult == WIFI_SCAN_RUNNING) {
        // scan is running
        return WL_NO_SSID_AVAIL;
    } else if(scanResult >= 0) {
        // scan done analyze
        WifiAPlist_t bestNetwork { NULL, NULL };
        int bestNetworkDb = INT_MIN;
        uint8_t bestBSSID[6];
        int32_t bestChannel = 0;

        log_i("[WIFI] scan done");

        if(scanResult == 0) {
            log_e("[WIFI] no networks found");
        } else {
            log_i("[WIFI] %d networks found", scanResult);
            for(int8_t i = 0; i < scanResult; ++i) {

                String ssid_scan;
                int32_t rssi_scan;
                uint8_t sec_scan;
                uint8_t* BSSID_scan;
                int32_t chan_scan;

                WiFi.getNetworkInfo(i, ssid_scan, sec_scan, rssi_scan, BSSID_scan, chan_scan);

                bool known = false;
                for(uint32_t x = APlist.size() ; x > 0; x--) {
                    WifiAPlist_t entry = APlist[x-1];

                    if(ssid_scan == entry.ssid) { // SSID match
                        known = true;
                        if(rssi_scan > bestNetworkDb) { // best network
                            if(sec_scan == WIFI_AUTH_OPEN || entry.pass) { // check for passphrase if not open wlan
                                bestNetworkDb = rssi_scan;
                                bestChannel = chan_scan;
                                memcpy((void*) &bestNetwork, (void*) &entry, sizeof(bestNetwork));
                                memcpy((void*) &bestBSSID, (void*) BSSID_scan, sizeof(bestBSSID));
                            }
                        }
                        break;
                    }
                }

                if(known) {
                    log_d(" --->   %d: [%d][%02X:%02X:%02X:%02X:%02X:%02X] %s (%d) %c", i, chan_scan, BSSID_scan[0], BSSID_scan[1], BSSID_scan[2], BSSID_scan[3], BSSID_scan[4], BSSID_scan[5], ssid_scan.c_str(), rssi_scan, (sec_scan == WIFI_AUTH_OPEN) ? ' ' : '*');
                } else {
                    log_d("       %d: [%d][%02X:%02X:%02X:%02X:%02X:%02X] %s (%d) %c", i, chan_scan, BSSID_scan[0], BSSID_scan[1], BSSID_scan[2], BSSID_scan[3], BSSID_scan[4], BSSID_scan[5], ssid_scan.c_str(), rssi_scan, (sec_scan == WIFI_AUTH_OPEN) ? ' ' : '*');
                }
            }
        }

        // clean up ram
        WiFi.scanDelete();

        if(bestNetwork.ssid) {
            log_i("[WIFI] Connecting BSSID: %02X:%02X:%02X:%02X:%02X:%02X SSID: %s Channel: %d (%d)", bestBSSID[0], bestBSSID[1], bestBSSID[2], bestBSSID[3], bestBSSID[4], bestBSSID[5], bestNetwork.ssid, bestChannel, bestNetworkDb);

            WiFi.begin(bestNetwork.ssid, bestNetwork.pass, bestChannel, bestBSSID);
            status = WiFi.status();

            auto startTime = millis();
            // wait for connection, fail, or timeout
            while(status != WL_CONNECTED && status != WL_NO_SSID_AVAIL && status != WL_CONNECT_FAILED && (millis() - startTime) <= connectTimeout) {
                delay(10);
                status = WiFi.status();
            }

            switch(status) {
            case WL_CONNECTED:
                log_i("[WIFI] Connecting done.");
                log_d("[WIFI] SSID: %s", WiFi.SSID().c_str());
                log_d("[WIFI] IP: %s", WiFi.localIP().toString().c_str());
                log_d("[WIFI] MAC: %s", WiFi.BSSIDstr().c_str());
                log_d("[WIFI] Channel: %d", WiFi.channel());
                break;
            case WL_NO_SSID_AVAIL:
                log_e("[WIFI] Connecting Failed AP not found.");
                break;
            case WL_CONNECT_FAILED:
                log_e("[WIFI] Connecting Failed.");
                break;
            default:
                log_e("[WIFI] Connecting Failed (%d).", status);
                break;
            }
        } else {
            log_e("[WIFI] no matching wifi found!");
        }
 }else{
        // start scan
  log_d("[WIFI] delete old wifi config...");
  WiFi.disconnect();

  log_d("[WIFI] start scan");
        // scan wifi async mode
  WiFi.scanNetworks(true);
 }

 return status;
}