diff options
| author | chromhelm <chromhelm@users.noreply.github.com> | 2015-05-29 16:51:55 +0200 |
|---|---|---|
| committer | Cristian Maglie <c.maglie@arduino.cc> | 2015-05-29 18:12:24 +0200 |
| commit | b7855ab7e159010e50d8b00e1cdd9dd7a8112d88 (patch) | |
| tree | 2dfa6737c09e9630c17e17327a1d12de905e87c2 /cores/arduino/HardwareSerial.cpp | |
| parent | ef4eb0cf6a2afd7dfc3b67561c8523ac8d4c6205 (diff) | |
Saving some bytes in HardwareSerial::write
Diffstat (limited to 'cores/arduino/HardwareSerial.cpp')
| -rw-r--r-- | cores/arduino/HardwareSerial.cpp | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/cores/arduino/HardwareSerial.cpp b/cores/arduino/HardwareSerial.cpp index 4022698..a2029a8 100644 --- a/cores/arduino/HardwareSerial.cpp +++ b/cores/arduino/HardwareSerial.cpp @@ -213,6 +213,7 @@ void HardwareSerial::flush() size_t HardwareSerial::write(uint8_t c) { + _written = true; // If the buffer and the data register is empty, just write the byte // to the data register and be done. This shortcut helps // significantly improve the effective datarate at high (> @@ -220,7 +221,6 @@ 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; @@ -244,10 +244,8 @@ size_t HardwareSerial::write(uint8_t c) _tx_buffer_head = i; sbi(*_ucsrb, UDRIE0); - _written = true; return 1; } - #endif // whole file |