MakeBlock Drive Updated
Updated library for MakeBlock Ranger
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Wire.h
1/*
2 TwoWire.h - TWI/I2C library for Arduino & 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 2012 by Todd Krein (todd@krein.org) to implement repeated starts
20*/
21
22#ifndef TwoWire_h
23#define TwoWire_h
24
25#include <inttypes.h>
26#include "Stream.h"
27
28#define BUFFER_LENGTH 32
29
30// WIRE_HAS_END means Wire has end()
31#define WIRE_HAS_END 1
32
33class TwoWire : public Stream
34{
35 private:
36 static uint8_t rxBuffer[];
37 static uint8_t rxBufferIndex;
38 static uint8_t rxBufferLength;
39
40 static uint8_t txAddress;
41 static uint8_t txBuffer[];
42 static uint8_t txBufferIndex;
43 static uint8_t txBufferLength;
44
45 static uint8_t transmitting;
46 static void (*user_onRequest)(void);
47 static void (*user_onReceive)(int);
48 static void onRequestService(void);
49 static void onReceiveService(uint8_t*, int);
50 public:
51 TwoWire();
52 void begin();
53 void begin(uint8_t);
54 void begin(int);
55 void end();
56 void setClock(uint32_t);
57 void beginTransmission(uint8_t);
58 void beginTransmission(int);
59 uint8_t endTransmission(void);
60 uint8_t endTransmission(uint8_t);
61 uint8_t requestFrom(uint8_t, uint8_t);
62 uint8_t requestFrom(uint8_t, uint8_t, uint8_t);
63 uint8_t requestFrom(uint8_t, uint8_t, uint32_t, uint8_t, uint8_t);
64 uint8_t requestFrom(int, int);
65 uint8_t requestFrom(int, int, int);
66 virtual size_t write(uint8_t);
67 virtual size_t write(const uint8_t *, size_t);
68 virtual int available(void);
69 virtual int read(void);
70 virtual int peek(void);
71 virtual void flush(void);
72 void onReceive( void (*)(int) );
73 void onRequest( void (*)(void) );
74
75 inline size_t write(unsigned long n) { return write((uint8_t)n); }
76 inline size_t write(long n) { return write((uint8_t)n); }
77 inline size_t write(unsigned int n) { return write((uint8_t)n); }
78 inline size_t write(int n) { return write((uint8_t)n); }
79 using Print::write;
80};
81
82extern TwoWire Wire;
83
84#endif
85
TwoWire
Definition Wire.h:34