diff options
| -rw-r--r-- | cores/arduino/HardwareSerial.cpp | 12 |
1 files changed, 2 insertions, 10 deletions
diff --git a/cores/arduino/HardwareSerial.cpp b/cores/arduino/HardwareSerial.cpp index 1154ae7..74a0641 100644 --- a/cores/arduino/HardwareSerial.cpp +++ b/cores/arduino/HardwareSerial.cpp @@ -359,16 +359,8 @@ int HardwareSerial::read(void) void HardwareSerial::flush() { - // don't reverse this or there may be problems if the RX interrupt - // occurs after reading the value of rx_buffer_head but before writing - // the value to rx_buffer_tail; the previous value of rx_buffer_head - // may be written to rx_buffer_tail, making it appear as if the buffer - // don't reverse this or there may be problems if the RX interrupt - // occurs after reading the value of rx_buffer_head but before writing - // the value to rx_buffer_tail; the previous value of rx_buffer_head - // may be written to rx_buffer_tail, making it appear as if the buffer - // were full, not empty. - _rx_buffer->head = _rx_buffer->tail; + while (_tx_buffer->head != _tx_buffer->tail) + ; } void HardwareSerial::write(uint8_t c) |