added example on how to save static ip to FS config.json

added static ip to config portal, if set

README.md

@@ -45,7 +45,7 @@ First attempt at a library. Lots more changes and fixes to do. Contributions are
 - ~~cleanup and streamline code~~ (although this is ongoing)
 - if timeout is set, extend it when a page is fetched in AP mode
 - ~~add ability to configure more parameters than ssid/password~~
-- maybe allow setting ip of ESP after reboot
+- ~~maybe allow setting ip of ESP after reboot~~
 - ~~add to Arduino Boards Manager~~
 - add to PlatformIO
 - add multiple sets of network credentials
@@ -130,7 +130,9 @@ void configModeCallback (WiFiManager *myWiFiManager) {
 ```
 
 ##### Save settings
-This gets called when custom parameters have been set **AND** a connection has been established. Use it to set a flag, so when all the configuration finishes, you can save the extra parameters somewhere. See [AutoConnectWithFSParameters Example](https://github.com/tzapu/WiFiManager/tree/master/examples/AutoConnectWithFSParameters).
+This gets called when custom parameters have been set **AND** a connection has been established. Use it to set a flag, so when all the configuration finishes, you can save the extra parameters somewhere. 
+
+See [AutoConnectWithFSParameters Example](https://github.com/tzapu/WiFiManager/tree/master/examples/AutoConnectWithFSParameters).
 ```cpp
 wifiManager.setSaveConfigCallback(saveConfigCallback);
 ```
@@ -157,7 +159,8 @@ Check for connection and if it's still not established do whatever is needed (on
 #### On Demand Configuration Portal
 If you would rather start the configuration portal on demand rather than automatically on a failed connection attempt, then this is for you.
 
-Instead of calling `autoConnect()` which does all the connecting and failover configuration portal setup for you, you need to use `startConfigPortal()`
+Instead of calling `autoConnect()` which does all the connecting and failover configuration portal setup for you, you need to use `startConfigPortal()`. __Do not use BOTH.__
+
 Example usage
 ```cpp
 void loop() {
@@ -245,8 +248,6 @@ wifiManager.setDebugOutput(false);
 
 ##### v0.2
 needs the latest staging version (or at least a recent release of the staging version) to work
-This is jsut random textTo show the lagginess.
-[the editor is completly](behing the typing)
 
 ##### v0.1
 works with the staging release ver. 1.6.5-1044-g170995a, built on Aug 10, 2015 of the ESP8266 Arduino library.

WiFiManager.cpp

@@ -114,13 +114,6 @@ boolean WiFiManager::autoConnect(char const *apName, char const *apPassword) {
   // attempt to connect; should it fail, fall back to AP
   WiFi.mode(WIFI_STA);
 
-  // check if we've got static_ip settings, if we do, use those.
-  if (_sta_static_ip) {
-    DEBUG_WM(F("Custom STA IP/GW/Subnet"));
-    WiFi.config(_sta_static_ip, _sta_static_gw, _sta_static_sn);
-    DEBUG_WM(WiFi.localIP());
-  }
-
   if (connectWifi(ssid, pass) == WL_CONNECTED)   {
     DEBUG_WM(F("IP Address:"));
     DEBUG_WM(WiFi.localIP());
@@ -154,9 +147,9 @@ boolean  WiFiManager::startConfigPortal(char const *apName, char const *apPasswo
 
 
     if (connect) {
+      connect = false;
       delay(2000);
       DEBUG_WM(F("Connecting to new AP"));
-      connect = false;
       // using user-provided  _ssid, _pass in place of system-stored ssid amd pass
       if (connectWifi(_ssid, _pass) != WL_CONNECTED) {
         DEBUG_WM(F("Failed to connect."));
@@ -184,7 +177,15 @@ boolean  WiFiManager::startConfigPortal(char const *apName, char const *apPasswo
 
 int WiFiManager::connectWifi(String ssid, String pass) {
   DEBUG_WM(F("Connecting as wifi client..."));
-  //WiFi.disconnect();
+
+  // check if we've got static_ip settings, if we do, use those.
+  if (_sta_static_ip) {
+    DEBUG_WM(F("Custom STA IP/GW/Subnet"));
+    WiFi.config(_sta_static_ip, _sta_static_gw, _sta_static_sn);
+    DEBUG_WM(WiFi.localIP());
+  }
+
+
   WiFi.begin(ssid.c_str(), pass.c_str());
   int connRes = WiFi.waitForConnectResult();
   DEBUG_WM ("Connection result: ");
@@ -394,6 +395,38 @@ void WiFiManager::handleWifi(boolean scan) {
     server->sendContent_P("<br/>");
   }
 
+  if(_sta_static_ip) {
+    
+    String item = FPSTR(HTTP_FORM_PARAM);
+    item.replace("{i}", "ip");
+    item.replace("{n}", "ip");
+    item.replace("{p}", "Static IP");
+    item.replace("{l}", "15");
+    item.replace("{v}", _sta_static_ip.toString());
+
+    server->sendContent(item);       
+    
+    item = FPSTR(HTTP_FORM_PARAM);
+    item.replace("{i}", "gw");
+    item.replace("{n}", "gw");
+    item.replace("{p}", "Static Gateway");
+    item.replace("{l}", "15");
+    item.replace("{v}", _sta_static_gw.toString());
+
+    server->sendContent(item);
+    
+    item = FPSTR(HTTP_FORM_PARAM);
+    item.replace("{i}", "sn");
+    item.replace("{n}", "sn");
+    item.replace("{p}", "Subnet");
+    item.replace("{l}", "15");
+    item.replace("{v}", _sta_static_sn.toString());
+
+    server->sendContent(item);    
+
+    server->sendContent_P("<br/>");
+  }
+
   server->sendContent_P(HTTP_FORM_END);
   server->sendContent_P(HTTP_END);
   server->client().stop();
@@ -423,6 +456,22 @@ void WiFiManager::handleWifiSave() {
     DEBUG_WM(value);
   }
 
+  if(server->arg("ip") != "") {
+    DEBUG_WM(F("static ip"));
+    DEBUG_WM(server->arg("ip"));
+    _sta_static_ip.fromString(server->arg("ip"));
+  }
+  if(server->arg("gw")) {
+    DEBUG_WM(F("static gateway"));
+    DEBUG_WM(server->arg("gw"));
+    _sta_static_gw.fromString(server->arg("gw"));
+  }
+  if(server->arg("sn")) {
+    DEBUG_WM(F("static netmask"));
+    DEBUG_WM(server->arg("sn"));
+    _sta_static_sn.fromString(server->arg("sn"));
+  }
+
   server->sendHeader("Cache-Control", "no-cache, no-store, must-revalidate");
   server->sendHeader("Pragma", "no-cache");
   server->sendHeader("Expires", "-1");

WiFiManager.h

@@ -40,15 +40,15 @@ class WiFiManagerParameter {
   public:
     WiFiManagerParameter(const char *id, const char *placeholder, const char *defaultValue, int length);
 
-    const char* getID();
-    const char* getValue();
-    const char* getPlaceholder();
-    int getValueLength();
+    const char *getID();
+    const char *getValue();
+    const char *getPlaceholder();
+    int         getValueLength();
   private:
-    const char* _id;
-    const char* _placeholder;
-    char* _value;
-    int _length;
+    const char *_id;
+    const char *_placeholder;
+    char       *_value;
+    int         _length;
 
     friend class WiFiManager;
 };

examples/AutoConnectWithFSParametersAndCustomIP/AutoConnectWithFSParametersAndCustomIP.ino

@@ -0,0 +1,193 @@
+#include <FS.h>                   //this needs to be first, or it all crashes and burns...
+
+#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
+
+#include <ArduinoJson.h>          //https://github.com/bblanchon/ArduinoJson
+
+//define your default values here, if there are different values in config.json, they are overwritten.
+char mqtt_server[40];
+char mqtt_port[5] = "8080";
+char blynk_token[64] = "YOUR_BLYNK_TOKEN";
+//default custom static IP
+char static_ip[18] = "10.0.1.56";
+char static_gw[18] = "10.0.1.1";
+char static_sn[18] = "255.255.255.0";
+
+//flag for saving data
+bool shouldSaveConfig = false;
+
+//callback notifying us of the need to save config
+void saveConfigCallback () {
+  Serial.println("Should save config");
+  shouldSaveConfig = true;
+}
+
+void setup() {
+  // put your setup code here, to run once:
+  Serial.begin(115200);
+  Serial.println();
+
+  //clean FS, for testing
+  //SPIFFS.format();
+
+  //read configuration from FS json
+  Serial.println("mounting FS...");
+
+  if (SPIFFS.begin()) {
+    Serial.println("mounted file system");
+    if (SPIFFS.exists("/config.json")) {
+      //file exists, reading and loading
+      Serial.println("reading config file");
+      File configFile = SPIFFS.open("/config.json", "r");
+      if (configFile) {
+        Serial.println("opened config file");
+        size_t size = configFile.size();
+        // Allocate a buffer to store contents of the file.
+        std::unique_ptr<char[]> buf(new char[size]);
+
+        configFile.readBytes(buf.get(), size);
+        StaticJsonBuffer<200> jsonBuffer;
+        JsonObject& json = jsonBuffer.parseObject(buf.get());
+        json.printTo(Serial);
+        if (json.success()) {
+          Serial.println("\nparsed json");
+
+          strcpy(mqtt_server, json["mqtt_server"]);
+          strcpy(mqtt_port, json["mqtt_port"]);
+          strcpy(blynk_token, json["blynk_token"]);
+
+          //mqtt_server = json["mqtt_server"];
+          //mqtt_port = json["mqtt_port"];
+          //blynk_token = json["blynk_token"];
+
+          if(json["ip"]) {
+            Serial.println("setting custom ip from config");
+            //static_ip = json["ip"];
+            strcpy(static_ip, json["ip"]);
+            strcpy(static_gw, json["gateway"]);
+            strcpy(static_sn, json["subnet"]);
+            //strcat(static_ip, json["ip"]);
+            //static_gw = json["gateway"];
+            //static_sn = json["subnet"];
+            Serial.println(static_ip);
+/*            Serial.println("converting ip");
+            IPAddress ip = ipFromCharArray(static_ip);
+            Serial.println(ip);*/
+          } else {
+            Serial.println("no custom ip in config");
+          }
+        } else {
+          Serial.println("failed to load json config");
+        }
+      }
+    }
+  } else {
+    Serial.println("failed to mount FS");
+  }
+  //end read
+  Serial.println(static_ip);
+  Serial.println(blynk_token);
+  Serial.println(mqtt_server);
+
+
+  // The extra parameters to be configured (can be either global or just in the setup)
+  // After connecting, parameter.getValue() will get you the configured value
+  // id/name placeholder/prompt default length
+  WiFiManagerParameter custom_mqtt_server("server", "mqtt server", mqtt_server, 40);
+  WiFiManagerParameter custom_mqtt_port("port", "mqtt port", mqtt_port, 5);
+  WiFiManagerParameter custom_blynk_token("blynk", "blynk token", blynk_token, 64);
+
+  //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);
+
+  //set static ip
+  IPAddress _ip,_gw,_sn;
+  _ip.fromString(static_ip);
+  _gw.fromString(static_gw);
+  _sn.fromString(static_sn);
+
+  wifiManager.setSTAStaticIPConfig(_ip, _gw, _sn);
+  
+  //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();
+
+  //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
+  //wifiManager.setTimeout(120);
+
+  //fetches ssid and pass and tries to connect
+  //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", "password")) {
+    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 :)");
+
+  //read updated parameters
+  strcpy(mqtt_server, custom_mqtt_server.getValue());
+  strcpy(mqtt_port, custom_mqtt_port.getValue());
+  strcpy(blynk_token, custom_blynk_token.getValue());
+  //mqtt_port = custom_mqtt_port.getValue();
+  //blynk_token = custom_blynk_token.getValue();
+
+  //save the custom parameters to FS
+  if (shouldSaveConfig) {
+    Serial.println("saving config");
+    StaticJsonBuffer<200> jsonBuffer;
+    JsonObject& json = jsonBuffer.createObject();
+    json["mqtt_server"] = mqtt_server;
+    json["mqtt_port"] = mqtt_port;
+    json["blynk_token"] = blynk_token;
+
+    json["ip"] = WiFi.localIP().toString();
+    json["gateway"] = WiFi.gatewayIP().toString();
+    json["subnet"] = WiFi.subnetMask().toString();
+
+    File configFile = SPIFFS.open("/config.json", "w");
+    if (!configFile) {
+      Serial.println("failed to open config file for writing");
+    }
+
+    json.prettyPrintTo(Serial);
+    json.printTo(configFile);
+    configFile.close();
+    //end save
+  }
+
+  Serial.println("local ip");
+  Serial.println(WiFi.localIP());
+  Serial.println(WiFi.gatewayIP());
+  Serial.println(WiFi.subnetMask());
+}
+
+void loop() {
+  // put your main code here, to run repeatedly:
+
+
+}