58 lines
1.9 KiB
C++
58 lines
1.9 KiB
C++
|
/*
|
||
|
|
HardwareSerial2.cpp - Hardware serial library for Wiring
|
||
|
|
Copyright (c) 2006 Nicholas Zambetti. All right reserved.
|
||
|
|
|
||
|
|
This library is free software; you can redistribute it and/or
|
||
|
|
modify it under the terms of the GNU Lesser General Public
|
||
|
|
License as published by the Free Software Foundation; either
|
||
|
|
version 2.1 of the License, or (at your option) any later version.
|
||
|
|
|
||
|
|
This library is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
|
Lesser General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU Lesser General Public
|
||
|
|
License along with this library; if not, write to the Free Software
|
||
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
|
||
|
|
Modified 23 November 2006 by David A. Mellis
|
||
|
|
Modified 28 September 2010 by Mark Sproul
|
||
|
|
Modified 14 August 2012 by Alarus
|
||
|
|
Modified 3 December 2013 by Matthijs Kooijman
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "Arduino.h"
|
||
|
|
#include "HardwareSerial.h"
|
||
|
|
#include "HardwareSerial_private.h"
|
||
|
|
|
||
|
|
// Each HardwareSerial is defined in its own file, sine the linker pulls
|
||
|
|
// in the entire file when any element inside is used. --gc-sections can
|
||
|
|
// additionally cause unused symbols to be dropped, but ISRs have the
|
||
|
|
// "used" attribute so are never dropped and they keep the
|
||
|
|
// HardwareSerial instance in as well. Putting each instance in its own
|
||
|
|
// file prevents the linker from pulling in any unused instances in the
|
||
|
|
// first place.
|
||
|
|
|
||
|
|
#if defined(HAVE_HWSERIAL2)
|
||
|
|
|
||
|
|
ISR(USART2_RX_vect)
|
||
|
|
{
|
||
|
|
Serial2._rx_complete_irq();
|
||
|
|
}
|
||
|
|
|
||
|
|
ISR(USART2_UDRE_vect)
|
||
|
|
{
|
||
|
|
Serial2._tx_udr_empty_irq();
|
||
|
|
}
|
||
|
|
|
||
|
|
HardwareSerial Serial2(&UBRR2H, &UBRR2L, &UCSR2A, &UCSR2B, &UCSR2C, &UDR2);
|
||
|
|
|
||
|
|
// Function that can be weakly referenced by serialEventRun to prevent
|
||
|
|
// pulling in this file if it's not otherwise used.
|
||
|
|
bool Serial2_available() {
|
||
|
|
return Serial2.available();
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif // HAVE_HWSERIAL2
|