Provide API to configure watchdog feed function and feed it

Author: pennam

libraries/WiFi/src/WiFi.cpp

@@ -314,6 +314,18 @@ unsigned long arduino::WiFiClass::getTime() {
     return 0;
 }
 
+void arduino::WiFiClass::setFeedWatchdogFunc(voidPrtFuncPtr func)
+{
+  _feed_watchdog_func = func;
+}
+
+void arduino::WiFiClass::feedWatchdog()
+{
+  if (_feed_watchdog_func)
+	_feed_watchdog_func();
+}
+
+
 #if defined(COMPONENT_4343W)
 
 #include "QSPIFBlockDevice.h"

libraries/WiFi/src/WiFi.h

@@ -296,6 +296,9 @@ class WiFiClass
 
     NetworkInterface *getNetwork();
 
+    void setFeedWatchdogFunc(voidPrtFuncPtr func);
+    void feedWatchdog();
+
 private:
 
     EMACInterface* _softAP = nullptr;
@@ -316,6 +319,7 @@ class WiFiClass
     bool isVisible(const char* ssid);
     arduino::IPAddress ipAddressFromSocketAddress(SocketAddress socketAddress);
     SocketAddress socketAddressFromIpAddress(arduino::IPAddress ip, uint16_t port);
+    voidPrtFuncPtr _feed_watchdog_func = 0;
 };
 
 }