source: rtos_arduino/trunk/arduino_lib/hardware/arduino/samd/libraries/SoftwareSerial/SoftwareSerial.h@ 175

Last change on this file since 175 was 175, checked in by ertl-honda, 8 years ago

ライブラリを Arduino IDE 1.7.9 にupdate
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1/*
2 SoftwareSerial.cpp - library for Arduino M0/M0 pro
3 Copyright (c) 2016 Arduino Srl. All rights reserved.
4 Written by Chiara Ruggeri (chiara@arduino.org)
5
6 This library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 This library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with this library; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19
20 Enjoy!
21*/
22
23#ifndef SoftwareSerial_h
24#define SoftwareSerial_h
25
26#include <inttypes.h>
27#include <Stream.h>
28#include <variant.h>
29
30/******************************************************************************
31* Definitions
32******************************************************************************/
33
34#define _SS_MAX_RX_BUFF 64 // RX buffer size
35#ifndef GCC_VERSION
36#define GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
37#endif
38
39class SoftwareSerial : public Stream
40{
41private:
42 // per object data
43 uint8_t _transmitPin;
44 uint8_t _receivePin;
45 uint32_t _receiveBitMask;
46 volatile PORT_IN_Type *_receivePortRegister;
47 uint32_t _transmitBitMask;
48 volatile PORT_OUT_Type *_transmitPortRegister;
49
50 // Expressed as 4-cycle delays (must never be 0!)
51 uint16_t _rx_delay_centering;
52 uint16_t _rx_delay_intrabit;
53 uint16_t _rx_delay_stopbit;
54 uint16_t _tx_delay;
55
56 uint16_t _buffer_overflow:1;
57 uint16_t _inverse_logic:1;
58
59 // static data
60 static char _receive_buffer[_SS_MAX_RX_BUFF];
61 static volatile uint8_t _receive_buffer_tail;
62 static volatile uint8_t _receive_buffer_head;
63 static SoftwareSerial *active_object;
64
65 // private methods
66 void recv() __attribute__((__always_inline__));
67 uint32_t rx_pin_read();
68 void tx_pin_write(uint8_t pin_state) __attribute__((__always_inline__));
69 void setTX(uint8_t transmitPin);
70 void setRX(uint8_t receivePin);
71 void setRxIntMsk(bool enable) __attribute__((__always_inline__));
72
73
74public:
75 // public methods
76 SoftwareSerial(uint8_t receivePin, uint8_t transmitPin, bool inverse_logic = false);
77 ~SoftwareSerial();
78 void begin(long speed);
79 bool listen();
80 void end();
81 bool isListening() { return this == active_object; }
82 bool stopListening();
83 bool overflow() { bool ret = _buffer_overflow; if (ret) _buffer_overflow = false; return ret; }
84 int peek();
85
86 virtual size_t write(uint8_t byte);
87 virtual int read();
88 virtual int available();
89 virtual void flush();
90 operator bool() { return true; }
91
92 using Print::write;
93
94 // public only for easy access by interrupt handlers
95 static inline void handle_interrupt() __attribute__((__always_inline__));
96};
97
98// Arduino 0012 workaround
99#undef int
100#undef char
101#undef long
102#undef byte
103#undef float
104#undef abs
105#undef round
106
107#endif
108
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