added signal quality filter

WiFiManager.cpp

@@ -1,8 +1,7 @@
 /**************************************************************
    WiFiManager is a library for the ESP8266/Arduino platform
    (https://github.com/esp8266/Arduino) to enable easy
-   configuration and reconfiguration of WiFi credentials and
-   store them in EEPROM.
+   configuration and reconfiguration of WiFi credentials using a Captive Portal
    inspired by:
    http://www.esp8266.com/viewtopic.php?f=29&t=2520
    https://github.com/chriscook8/esp-arduino-apboot
@@ -127,7 +126,7 @@ boolean WiFiManager::autoConnect(char const *apName, char const *apPassword) {
 boolean  WiFiManager::startConfigPortal(char const *apName, char const *apPassword) {
   //setup AP
   WiFi.mode(WIFI_AP);
-  
+
   _apName = apName;
   _apPassword = apPassword;
 
@@ -135,7 +134,7 @@ boolean  WiFiManager::startConfigPortal(char const *apName, char const *apPasswo
   if ( _apcallback != NULL) {
     _apcallback(this);
   }
-  
+
   connect = false;
   setupConfigPortal();
   DEBUG_WM("start loop");
@@ -267,6 +266,10 @@ void WiFiManager::setAPConfig(IPAddress ip, IPAddress gw, IPAddress sn) {
   _sn = sn;
 }
 
+void WiFiManager::setMinimumSignalQuality(int quality) {
+  _minimumQuality = quality;
+}
+
 
 /** Handle root or redirect to captive portal */
 void WiFiManager::handleRoot() {
@@ -328,19 +331,26 @@ void WiFiManager::handleWifi(boolean scan) {
       {
         DEBUG_WM(WiFi.SSID(i));
         DEBUG_WM(WiFi.RSSI(i));
-        String item = FPSTR(HTTP_ITEM);
-        String rssiQ;
-        rssiQ += getRSSIasQuality(WiFi.RSSI(i));
-        item.replace("{v}", WiFi.SSID(i));
-        item.replace("{r}", rssiQ);
-        if (WiFi.encryptionType(i) != ENC_TYPE_NONE) {
-          item.replace("{i}", FPSTR(HTTP_ITEM_PADLOCK));
+        int quality = getRSSIasQuality(WiFi.RSSI(i));
+        
+        if (_minimumQuality == -1 || _minimumQuality < quality) {
+          String item = FPSTR(HTTP_ITEM);
+          String rssiQ;
+          rssiQ += quality;
+          item.replace("{v}", WiFi.SSID(i));
+          item.replace("{r}", rssiQ);
+          if (WiFi.encryptionType(i) != ENC_TYPE_NONE) {
+            item.replace("{i}", FPSTR(HTTP_ITEM_PADLOCK));
+          } else {
+            item.replace("{i}", "");
+          }
+          //DEBUG_WM(item);
+          server->sendContent(item);
+          delay(0);
         } else {
-          item.replace("{i}", "");
+          DEBUG_WM(F("Skipping due to quality"));
         }
-        //DEBUG_WM(item);
-        server->sendContent(item);
-        delay(0);
+
       }
       server->sendContent("<br/>");
     }

WiFiManager.h

@@ -1,10 +1,11 @@
 /**************************************************************
    WiFiManager is a library for the ESP8266/Arduino platform
    (https://github.com/esp8266/Arduino) to enable easy
-   configuration and reconfiguration of WiFi credentials and
-   store them in EEPROM.
-   inspired by http://www.esp8266.com/viewtopic.php?f=29&t=2520
+   configuration and reconfiguration of WiFi credentials using a Captive Portal
+   inspired by:
+   http://www.esp8266.com/viewtopic.php?f=29&t=2520
    https://github.com/chriscook8/esp-arduino-apboot
+   https://github.com/esp8266/Arduino/tree/esp8266/hardware/esp8266com/esp8266/libraries/DNSServer/examples/CaptivePortalAdvanced
    Built by AlexT https://github.com/tzapu
    Licensed under MIT license
  **************************************************************/
@@ -79,6 +80,8 @@ class WiFiManager
     //in seconds
     void          setTimeout(unsigned long seconds);
     void          setDebugOutput(boolean debug);
+    //defaults to not showing anything under 8% signal quality if called
+    void          setMinimumSignalQuality(int quality = 8);
 
     //sets a custom ip /gateway /subnet configuration
     void          setAPConfig(IPAddress ip, IPAddress gw, IPAddress sn);
@@ -112,11 +115,11 @@ class WiFiManager
     IPAddress     _gw;
     IPAddress     _sn;
     int           _paramsCount = 0;
+    int           _minimumQuality = -1;
 
-    String        getEEPROMString(int start, int len);
-    void          setEEPROMString(int start, int len, String string);
+    //String        getEEPROMString(int start, int len);
+    //void          setEEPROMString(int start, int len, String string);
 
-//    boolean keepLooping = true;
     int           status = WL_IDLE_STATUS;
     int           connectWifi(String ssid, String pass);
 

examples/AutoConnectWithFSParameters/AutoConnectWithFSParameters.ino

@@ -14,8 +14,8 @@ const char *mqtt_server = NULL;
 const char *mqtt_port = "8080";
 const char *blynk_token = "YOUR_BLYNK_TOKEN";
 
-  //flag for saving data
-  bool shouldSaveConfig = false;
+//flag for saving data
+bool shouldSaveConfig = false;
 
 //callback notifying us of the need to save config
 void saveConfigCallback () {
@@ -79,18 +79,22 @@ void setup() {
   //WiFiManager
   //Local intialization. Once its business is done, there is no need to keep it around
   WiFiManager wifiManager;
-  
+
   //set config save notify callback
   wifiManager.setSaveConfigCallback(saveConfigCallback);
-  
+
   //add all your parameters here
   wifiManager.addParameter(&custom_mqtt_server);
   wifiManager.addParameter(&custom_mqtt_port);
   wifiManager.addParameter(&custom_blynk_token);
 
   //reset settings - for testing
-  //wifiManager.resetSettings();
+  wifiManager.resetSettings();
 
+  //set minimu quality of signal so it ignores AP's under that quality
+  //defaults to 8%
+  wifiManager.setMinimumSignalQuality();
+  
   //sets timeout until configuration portal gets turned off
   //useful to make it all retry or go to sleep
   //in seconds
@@ -100,7 +104,7 @@ void setup() {
   //if it does not connect it starts an access point with the specified name
   //here  "AutoConnectAP"
   //and goes into a blocking loop awaiting configuration
-  if (!wifiManager.autoConnect("AutoConnectAP")) {
+  if (!wifiManager.autoConnect("AutoConnectAP", "password")) {
     Serial.println("failed to connect and hit timeout");
     delay(3000);
     //reset and try again, or maybe put it to deep sleep