added example for on demand config portal

cleanup

WiFiManager.cpp

@@ -49,23 +49,24 @@ void WiFiManager::addParameter(WiFiManagerParameter *p) {
   DEBUG_WM(p->getID());
 }
 
-void WiFiManager::setupConfigPortal(char const *apName, char const *apPasswd) {
+void WiFiManager::setupConfigPortal(char const *apName, char const *apPassword) {
   dnsServer.reset(new DNSServer());
   server.reset(new ESP8266WebServer(80));
 
   DEBUG_WM(F(""));
   _apName = apName;
-  _apPasswd = apPasswd;
+  _apPassword = apPassword;
   start = millis();
 
   DEBUG_WM(F("Configuring access point... "));
   DEBUG_WM(_apName);
-  if (_apPasswd != NULL) {
-    if (strlen(_apPasswd) < 8 || strlen(_apPasswd) > 63) {
+  if (_apPassword != NULL) {
+    if (strlen(_apPassword) < 8 || strlen(_apPassword) > 63) {
       // fail passphrase to short or long!
-      DEBUG_WM(F("Invalid AccessPoint password"));
+      DEBUG_WM(F("Invalid AccessPoint password. Ignoring"));
+      _apPassword = NULL;
     }
-    DEBUG_WM(_apPasswd);
+    DEBUG_WM(_apPassword);
   }
 
   //optional soft ip config
@@ -74,8 +75,8 @@ void WiFiManager::setupConfigPortal(char const *apName, char const *apPasswd) {
     WiFi.softAPConfig(_ip, _gw, _sn);
   }
 
-  if (_apPasswd != NULL) {
-    WiFi.softAP(_apName, _apPasswd);//password option
+  if (_apPassword != NULL) {
+    WiFi.softAP(_apName, _apPassword);//password option
   } else {
     WiFi.softAP(_apName);
   }
@@ -136,7 +137,7 @@ boolean  WiFiManager::startConfigPortal(char const *apName, char const *apPasswo
   
   connect = false;
   setupConfigPortal(apName, apPassword);
-
+  DEBUG_WM("start loop");
   while (timeout == 0 || millis() < start + timeout) {
     //DNS
     dnsServer->processNextRequest();
@@ -168,7 +169,7 @@ boolean  WiFiManager::startConfigPortal(char const *apName, char const *apPasswo
 
   server.reset();
   dnsServer.reset();
-  
+  DEBUG_WM("end loop");
   return  WiFi.status() == WL_CONNECTED;
 }
 

WiFiManager.h

@@ -59,7 +59,7 @@ class WiFiManager
     WiFiManager();
 
     boolean       autoConnect();
-    boolean       autoConnect(char const *apName, char const *apPasswd = NULL);
+    boolean       autoConnect(char const *apName, char const *apPassword = NULL);
 
     //if you want to always start the config portal, without trying to connect first
     boolean       startConfigPortal(char const *apName, char const *apPassword = NULL);
@@ -96,11 +96,11 @@ class WiFiManager
 
     const String  HTTP_HEAD = "<!DOCTYPE html><html lang=\"en\"><head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1\"/><title>{v}</title>";
 
-    void          setupConfigPortal(char const *apName, char const *apPasswd);
+    void          setupConfigPortal(char const *apName, char const *apPassword);
 
     int           _eepromStart;
     const char*   _apName = "no-net";
-    const char*   _apPasswd = NULL;
+    const char*   _apPassword = NULL;
     String        _ssid = "";
     String        _pass = "";
     unsigned long timeout = 0;

examples/OnDemandConfigPortal/OnDemandConfigPortal.ino

@@ -0,0 +1,67 @@
+#include <ESP8266WiFi.h>          //https://github.com/esp8266/Arduino
+
+//needed for library
+#include <DNSServer.h>
+#include <ESP8266WebServer.h>
+#include <WiFiManager.h>          //https://github.com/tzapu/WiFiManager
+
+
+//callback notifying us of the need to save config
+void saveConfigCallback () {
+  Serial.println("Should save config");
+}
+
+
+void setup() {
+  // put your setup code here, to run once:
+  Serial.begin(115200);
+  Serial.println("\n Starting");
+
+  //read gpio 4 state on startup
+  pinMode(4, INPUT);
+  int pinState = digitalRead(4);
+
+  //if gpio 4 is high startup config mode
+  if (pinState == LOW) {
+    //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);
+
+    //reset settings - for testing
+    //wifiManager.resetSettings();
+
+    //sets timeout until configuration portal gets turned off
+    //useful to make it all retry or go to sleep
+    //in seconds
+    //wifiManager.setTimeout(120);
+
+    //it starts an access point with the specified name
+    //here  "AutoConnectAP"
+    //and goes into a blocking loop awaiting configuration
+
+    //WITHOUT THIS THE AP DOES NOT SEEM TO WORK PROPERLY
+    WiFi.mode(WIFI_STA);
+    
+    if (!wifiManager.startConfigPortal("OnDemandAP")) {
+      Serial.println("failed to connect and hit timeout");
+      delay(3000);
+      //reset and try again, or maybe put it to deep sleep
+      ESP.reset();
+      delay(5000);
+    }
+
+    //if you get here you have connected to the WiFi
+    Serial.println("connected...yeey :)");
+  }
+
+
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+
+
+}