source: arduino-1-6-7/trunk/fuentes/arduino-ide-amd64/hardware/arduino/avr/libraries/Wire/src/utility/twi.h @ 4837

Last change on this file since 4837 was 4837, checked in by daduve, 3 years ago

Adding new version

File size: 1.6 KB
Line 
1/*
2  twi.h - TWI/I2C library for Wiring & Arduino
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
20#ifndef twi_h
21#define twi_h
22
23  #include <inttypes.h>
24
25  //#define ATMEGA8
26
27  #ifndef TWI_FREQ
28  #define TWI_FREQ 100000L
29  #endif
30
31  #ifndef TWI_BUFFER_LENGTH
32  #define TWI_BUFFER_LENGTH 32
33  #endif
34
35  #define TWI_READY 0
36  #define TWI_MRX   1
37  #define TWI_MTX   2
38  #define TWI_SRX   3
39  #define TWI_STX   4
40 
41  void twi_init(void);
42  void twi_disable(void);
43  void twi_setAddress(uint8_t);
44  void twi_setFrequency(uint32_t);
45  uint8_t twi_readFrom(uint8_t, uint8_t*, uint8_t, uint8_t);
46  uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t);
47  uint8_t twi_transmit(const uint8_t*, uint8_t);
48  void twi_attachSlaveRxEvent( void (*)(uint8_t*, int) );
49  void twi_attachSlaveTxEvent( void (*)(void) );
50  void twi_reply(uint8_t);
51  void twi_stop(void);
52  void twi_releaseBus(void);
53
54#endif
55
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