Print.flush() - Arduino API conformance (espressif#6084)

JAndrassy · web-flow · commit e84e9c153e6c · 2022-01-17T16:12:22.000+02:00
diff --git a/cores/esp32/Print.h b/cores/esp32/Print.h
@@ -108,6 +108,9 @@ class Print
     size_t println(const Printable&);
     size_t println(struct tm * timeinfo, const char * format = NULL);
     size_t println(void);
+    
+    virtual void flush() { /* Empty implementation for backward compatibility */ }
+    
 };
 
 #endif
diff --git a/cores/esp32/Stream.h b/cores/esp32/Stream.h
@@ -48,7 +48,6 @@ class Stream: public Print
     virtual int available() = 0;
     virtual int read() = 0;
     virtual int peek() = 0;
-    virtual void flush() = 0;
 
     Stream():_startMillis(0)
     {
