WiFi: add setTimeout()

Author: pennam

Diff for: libraries/WiFi/src/WiFi.cpp

@@ -75,6 +75,7 @@ int arduino::WiFiClass::begin(const char* ssid, const char* passphrase, wl_enc_t
     wifi_if->set_network(_ip, _netmask, _gateway);
   }
 
+  wifi_if->set_timeout(_timeout);
   nsapi_error_t result = wifi_if->connect(ssid, passphrase, _security);
 
   if(result == NSAPI_ERROR_IS_CONNECTED) {
@@ -297,6 +298,10 @@ unsigned long arduino::WiFiClass::getTime() {
   return 0;
 }
 
+void arduino::WiFiClass::setTimeout(unsigned long timeout) {
+  _timeout = timeout;
+}
+
 void arduino::WiFiClass::statusCallback(nsapi_event_t status, intptr_t param)
 {
   if (((param == NSAPI_STATUS_DISCONNECTED) ||

Diff for: libraries/WiFi/src/WiFi.h

@@ -168,6 +168,11 @@ class WiFiClass : public MbedSocketClass {
 
   unsigned long getTime();
 
+  /*
+   * Configure WiFi join timeout in milliseconds. Default value is 7s.
+   */
+  void setTimeout(unsigned long timeout);
+
   friend class WiFiClient;
   friend class WiFiServer;
   friend class WiFiUDP;
@@ -183,6 +188,7 @@ class WiFiClass : public MbedSocketClass {
   WiFiAccessPoint* ap_list = nullptr;
   uint8_t connected_ap;
   nsapi_security_t _security;
+  unsigned long _timeout = 7000;
   int setSSID(const char* ssid);
   void ensureDefaultAPNetworkConfiguration();
   static void* handleAPEvents(whd_interface_t ifp, const whd_event_header_t* event_header, const uint8_t* event_data, void* handler_user_data);