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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 d229373..eefdcbe 100644
--- a/cores/arduino/HardwareSerial.h
+++ b/cores/arduino/HardwareSerial.h
@@ -49,7 +49,7 @@ class HardwareSerial : public Stream
volatile uint8_t *ucsra, volatile uint8_t *ucsrb,
volatile uint8_t *udr,
uint8_t rxen, uint8_t txen, uint8_t rxcie, uint8_t udrie, uint8_t u2x);
- void begin(long);
+ void begin(unsigned long);
void end();
virtual int available(void);
virtual int peek(void);