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-rw-r--r--cores/arduino/HardwareSerial.cpp3
1 files changed, 1 insertions, 2 deletions
diff --git a/cores/arduino/HardwareSerial.cpp b/cores/arduino/HardwareSerial.cpp
index a2029a8..5cd89e5 100644
--- a/cores/arduino/HardwareSerial.cpp
+++ b/cores/arduino/HardwareSerial.cpp
@@ -138,8 +138,7 @@ void HardwareSerial::begin(unsigned long baud, byte config)
void HardwareSerial::end()
{
// wait for transmission of outgoing data
- while (_tx_buffer_head != _tx_buffer_tail)
- ;
+ flush();
cbi(*_ucsrb, RXEN0);
cbi(*_ucsrb, TXEN0);