while we are at it: fixe Arduino wire api

esp8266 · d-a-v · Apr 26, 2019 · Apr 9, 2019 · Apr 9, 2019 · Apr 11, 2019
commit dbf44bb73469fd45d98f0122cff1e053df5e7b77
diff --git a/libraries/Wire/Wire.cpp b/libraries/Wire/Wire.cpp
@@ -265,6 +265,13 @@ void TwoWire::onRequestService(void)
 	user_onRequest();
 }
 
+void TwoWire::onReceive( void (*function)(int) ) {
+  // arduino api compatibility fixer:
+  // really hope size parameter will not exceed 2^31 :)
+  static_assert(sizeof(int) == sizeof(size_t), "something is wrong in Arduino kingdom");
+  user_onReceive = reinterpret_cast<void(*)(size_t)>(function);
+}
+
 void TwoWire::onReceive( void (*function)(size_t) ) {
   user_onReceive = function;
 }

diff --git a/libraries/Wire/Wire.h b/libraries/Wire/Wire.h
@@ -76,7 +76,8 @@ class TwoWire : public Stream
     virtual int read(void);
     virtual int peek(void);
     virtual void flush(void);
-    void onReceive( void (*)(size_t) );
+    void onReceive( void (*)(int) );    // arduino api
+    void onReceive( void (*)(size_t) ); // legacy esp8266 backward compatibility
     void onRequest( void (*)(void) );
 
     inline size_t write(unsigned long n) { return write((uint8_t)n); }