Renamed callback, and added to WiFiMulti example

Author: Sojourneer

libraries/ESP8266WiFi/examples/WiFiMulti/WiFiMulti.ino

@@ -8,6 +8,7 @@
     - Connect to WiFi with strongest signal (RSSI)
     - Fall back to connect to next WiFi when a connection failed or lost
     - Fall back to connect to hidden SSID's which are not reported by WiFi scan
+    - Static IP assigned depending on which SSID is connected   
 
     To enable debugging output, select in the Arduino iDE:
     - Tools | Debug Port: Serial
@@ -21,6 +22,8 @@ ESP8266WiFiMulti wifiMulti;
 // WiFi connect timeout per AP. Increase when connecting takes longer.
 const uint32_t connectTimeoutMs = 5000;
 
+SSID_selected_callback_t connectedToSSID(char *ssid);
+
 void setup() {
   // Don't save WiFi configuration in flash - optional
   WiFi.persistent(false);
@@ -35,9 +38,24 @@ void setup() {
   wifiMulti.addAP("ssid_from_AP_1", "your_password_for_AP_1");
   wifiMulti.addAP("ssid_from_AP_2", "your_password_for_AP_2");
   wifiMulti.addAP("ssid_from_AP_3", "your_password_for_AP_3");
+
+  wifiMulti.onSsidSelected(connectedToSSID);
+
   // More is possible
 }
 
+SSID_selected_callback_t connectedToSSID(char *ssid)
+{
+  // On connecting the second WiFi, assign static IP using config(...).
+  // For other SSID (if config has not already been called) DHCP will be used.
+  if(strcmp(ssid, "ssid_from_AP_2") == 0) {
+    IPAddress ip2(192,168,1,123);
+    IPAddress gw2(192,168,1,1);
+    IPAddress subnet2(255,255,255,0);
+    WiFi.config(ip2, gw2, subnet2);
+  }
+}
+
 void loop() {
   // Maintain WiFi connection
   if (wifiMulti.run(connectTimeoutMs) == WL_CONNECTED) {

libraries/ESP8266WiFi/src/ESP8266WiFiMulti.cpp

@@ -329,7 +329,7 @@ wl_status_t ESP8266WiFiMulti::connectWiFiMulti(uint32_t connectTimeoutMs)
             if (ssid == entry.ssid) {
                 DEBUG_WIFI_MULTI("[WIFIM] Connecting %s\n", ssid.c_str());
 
-                if(SSID_selected_callback) SSID_selected_callback(ssid.c_str());
+                if(_onSsidSelected) _onSsidSelected(ssid.c_str());
                 // Connect to WiFi
                 WiFi.begin(ssid, entry.passphrase, channel, bssid);
 
@@ -351,7 +351,7 @@ wl_status_t ESP8266WiFiMulti::connectWiFiMulti(uint32_t connectTimeoutMs)
         if (!connectSkipIndex[i]) {
             DEBUG_WIFI_MULTI("[WIFIM] Try hidden connect %s\n", entry.ssid);
 
-            if(SSID_selected_callback) SSID_selected_callback(entry.ssid);
+            if(_onSsidSelected) _onSsidSelected(entry.ssid);
             // Connect to WiFi
             WiFi.begin(entry.ssid, entry.passphrase);
 

libraries/ESP8266WiFi/src/ESP8266WiFiMulti.h

@@ -66,7 +66,7 @@ class ESP8266WiFiMulti
 
     bool addAP(const char *ssid, const char *passphrase = NULL);
     bool existsAP(const char *ssid, const char *passphrase = NULL);
-    void on_SSID_Selected(SSID_selected_callback_t cb) {  SSID_selected_callback = cb;};
+    void onSsidSelected(SSID_selected_callback_t cb) {  _onSsidSelected = cb;};
 
     wl_status_t run(uint32_t connectTimeoutMs=WIFI_CONNECT_TIMEOUT_MS);
 
@@ -75,7 +75,7 @@ class ESP8266WiFiMulti
 private:
     WifiAPlist _APlist;
     bool _firstRun;
-    SSID_selected_callback_t SSID_selected_callback = NULL;
+    SSID_selected_callback_t _onSsidSelected = NULL;
 
     bool APlistAdd(const char *ssid, const char *passphrase = NULL);
     bool APlistExists(const char *ssid, const char *passphrase = NULL);