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- /*
- HardwareSerial3.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_HWSERIAL3)
- ISR(USART3_RX_vect)
- {
- Serial3._rx_complete_irq();
- }
- ISR(USART3_UDRE_vect)
- {
- Serial3._tx_udr_empty_irq();
- }
- HardwareSerial Serial3(&UBRR3H, &UBRR3L, &UCSR3A, &UCSR3B, &UCSR3C, &UDR3);
- // Function that can be weakly referenced by serialEventRun to prevent
- // pulling in this file if it's not otherwise used.
- bool Serial3_available() {
- return Serial3.available();
- }
- #endif // HAVE_HWSERIAL3
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