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-rw-r--r--cores/arduino/HardwareSerial.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/cores/arduino/HardwareSerial.h b/cores/arduino/HardwareSerial.h
index d0dca06..176abe1 100644
--- a/cores/arduino/HardwareSerial.h
+++ b/cores/arduino/HardwareSerial.h
@@ -75,6 +75,6 @@ class HardwareSerial : public Stream
extern HardwareSerial Serial3;
#endif
-extern void serialEventRun(void);
+extern void serialEventRun(void) __attribute__((weak));
#endif