diff options
Diffstat (limited to 'cores/arduino')
| -rw-r--r-- | cores/arduino/HardwareSerial.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/cores/arduino/HardwareSerial.cpp b/cores/arduino/HardwareSerial.cpp index 41935e3..4022698 100644 --- a/cores/arduino/HardwareSerial.cpp +++ b/cores/arduino/HardwareSerial.cpp @@ -220,6 +220,7 @@ size_t HardwareSerial::write(uint8_t c) if (_tx_buffer_head == _tx_buffer_tail && bit_is_set(*_ucsra, UDRE0)) { *_udr = c; sbi(*_ucsra, TXC0); + _written = true; return 1; } tx_buffer_index_t i = (_tx_buffer_head + 1) % SERIAL_TX_BUFFER_SIZE; |