source: arduino-1-6-7/trunk/fuentes/arduino-ide-amd64/hardware/arduino/avr/cores/arduino/HardwareSerial2.cpp @ 4837

Last change on this file since 4837 was 4837, checked in by daduve, 2 years ago

Adding new version

File size: 1.9 KB
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1/*
2  HardwareSerial2.cpp - Hardware serial library for Wiring
3  Copyright (c) 2006 Nicholas Zambetti.  All right reserved.
4
5  This library is free software; you can redistribute it and/or
6  modify it under the terms of the GNU Lesser General Public
7  License as published by the Free Software Foundation; either
8  version 2.1 of the License, or (at your option) any later version.
9
10  This library is distributed in the hope that it will be useful,
11  but WITHOUT ANY WARRANTY; without even the implied warranty of
12  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  Lesser General Public License for more details.
14
15  You should have received a copy of the GNU Lesser General Public
16  License along with this library; if not, write to the Free Software
17  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
18
19  Modified 23 November 2006 by David A. Mellis
20  Modified 28 September 2010 by Mark Sproul
21  Modified 14 August 2012 by Alarus
22  Modified 3 December 2013 by Matthijs Kooijman
23*/
24
25#include "Arduino.h"
26#include "HardwareSerial.h"
27#include "HardwareSerial_private.h"
28
29// Each HardwareSerial is defined in its own file, sine the linker pulls
30// in the entire file when any element inside is used. --gc-sections can
31// additionally cause unused symbols to be dropped, but ISRs have the
32// "used" attribute so are never dropped and they keep the
33// HardwareSerial instance in as well. Putting each instance in its own
34// file prevents the linker from pulling in any unused instances in the
35// first place.
36
37#if defined(HAVE_HWSERIAL2)
38
39ISR(USART2_RX_vect)
40{
41  Serial2._rx_complete_irq();
42}
43
44ISR(USART2_UDRE_vect)
45{
46  Serial2._tx_udr_empty_irq();
47}
48
49HardwareSerial Serial2(&UBRR2H, &UBRR2L, &UCSR2A, &UCSR2B, &UCSR2C, &UDR2);
50
51// Function that can be weakly referenced by serialEventRun to prevent
52// pulling in this file if it's not otherwise used.
53bool Serial2_available() {
54  return Serial2.available();
55}
56
57#endif // HAVE_HWSERIAL2
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