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Code Issues Releases Activity

Changing Serial.flush() to write outgoing data, not drop incoming data.

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This brings it in line with most other uses of flush(), both in and out of Arduino.
http://code.google.com/p/arduino/issues/detail?id=497
This commit is contained in:
David A. Mellis 2011-05-07 12:05:27 -04:00
parent 059bc5f022
commit 694b8ad392
1 changed files with 2 additions and 10 deletions
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12
hardware/arduino/cores/arduino/HardwareSerial.cpp
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@ -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)