diff --git a/cores/esp8266/Esp.cpp b/cores/esp8266/Esp.cpp
index 28deeff28..da84aeb24 100644
--- a/cores/esp8266/Esp.cpp
+++ b/cores/esp8266/Esp.cpp
@@ -40,12 +40,12 @@ void EspClass::wdtEnable(int)
 	ets_wdt_enable();
 }
 
-void EspClass::wdtDisable()
+void EspClass::wdtDisable(void)
 {
 	ets_wdt_disable();
 }
 
-void EspClass::wdtFeed()
+void EspClass::wdtFeed(void)
 {
 	wdt_feed();
 }
@@ -56,7 +56,17 @@ void EspClass::deepSleep(uint32_t time_us, WakeMode mode)
  	system_deep_sleep(time_us);
 }
 
-void EspClass::reset()
+void EspClass::reset(void)
 {
 	((void (*)(void))0x40000080)();
 }
+
+void EspClass::restart(void)
+{
+    system_restart();
+}
+
+uint16_t EspClass::getVCC(void)
+{
+    return system_get_vdd33();
+}
diff --git a/cores/esp8266/Esp.h b/cores/esp8266/Esp.h
index c91e7e7b8..b3ff106da 100644
--- a/cores/esp8266/Esp.h
+++ b/cores/esp8266/Esp.h
@@ -35,12 +35,15 @@ class EspClass {
 
         void wdtEnable(int timeout_ms = 0);  
         // TODO: figure out how to set WDT timeout
-        void wdtDisable();
-        void wdtFeed();
+        void wdtDisable(void);
+        void wdtFeed(void);
 
         void deepSleep(uint32_t time_us, WakeMode mode = WAKE_RF_DEFAULT);
 
-        void reset();
+
+        void reset(void);
+        void restart(void);
+        uint16_t getVCC(void);
 };
 
 extern EspClass ESP;