Statistics
| Branch: | Revision:

scoutos / scout_avr / bom / twi.h @ f572eaeb

History | View | Annotate | Download (1.53 KB)

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_setAddress(uint8_t);
43
  uint8_t twi_readFrom(uint8_t, uint8_t*, uint8_t);
44
  uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t);
45
  uint8_t twi_transmit(const uint8_t*, uint8_t);
46
  void twi_attachSlaveRxEvent( void (*)(uint8_t*, int) );
47
  void twi_attachSlaveTxEvent( void (*)(void) );
48
  void twi_reply(uint8_t);
49
  void twi_stop(void);
50
  void twi_releaseBus(void);
51

    
52
#endif
53