Add callback to allow Static IP per SSID

Callback before WiFi.begin allows user to configure selected SSID

Author: Sojourneer

libraries/ESP8266WiFi/src/ESP8266WiFiMulti.cpp

@@ -329,9 +329,10 @@ 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());
                 // Connect to WiFi
                 WiFi.begin(ssid, entry.passphrase, channel, bssid);
-
+                
                 // Wait for status change
                 if (waitWiFiConnect(connectTimeoutMs) == WL_CONNECTED) {
                     return WL_CONNECTED;
@@ -350,6 +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);
             // Connect to WiFi
             WiFi.begin(entry.ssid, entry.passphrase);
 

libraries/ESP8266WiFi/src/ESP8266WiFiMulti.h

@@ -56,6 +56,7 @@ struct WifiAPEntry {
 };
 
 typedef std::vector<WifiAPEntry> WifiAPlist;
+typedef void (*SSID_selected_callback_t)(const char * ssid);
 
 class ESP8266WiFiMulti
 {
@@ -65,6 +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;};
 
     wl_status_t run(uint32_t connectTimeoutMs=WIFI_CONNECT_TIMEOUT_MS);
 
@@ -73,6 +75,7 @@ class ESP8266WiFiMulti
 private:
     WifiAPlist _APlist;
     bool _firstRun;
+    SSID_selected_callback_t SSID_selected_callback = NULL;
 
     bool APlistAdd(const char *ssid, const char *passphrase = NULL);
     bool APlistExists(const char *ssid, const char *passphrase = NULL);