scoutece / paintboard / code / twi.h @ 1af81271
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1 | 4319e0bc | Tom Mullins | /*
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2 | twi.h - TWI/I2C library for Wiring & Arduino
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3 | Copyright (c) 2006 Nicholas Zambetti. All right reserved.
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4 | |||
5 | This library is free software; you can redistribute it and/or
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6 | modify it under the terms of the GNU Lesser General Public
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7 | License as published by the Free Software Foundation; either
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8 | version 2.1 of the License, or (at your option) any later version.
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9 | |||
10 | This library is distributed in the hope that it will be useful,
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11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 | Lesser General Public License for more details.
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14 | |||
15 | You should have received a copy of the GNU Lesser General Public
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16 | License along with this library; if not, write to the Free Software
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17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18 | */
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19 | |||
20 | #ifndef twi_h
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21 | #define twi_h
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22 | |||
23 | #include <inttypes.h> |
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24 | |||
25 | //#define ATMEGA8
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26 | |||
27 | #ifndef TWI_FREQ
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28 | #define TWI_FREQ 100000L |
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29 | #endif
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30 | |||
31 | #ifndef TWI_BUFFER_LENGTH
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32 | #define TWI_BUFFER_LENGTH 32 |
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33 | #endif
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34 | |||
35 | #define TWI_READY 0 |
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36 | #define TWI_MRX 1 |
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37 | #define TWI_MTX 2 |
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38 | #define TWI_SRX 3 |
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39 | #define TWI_STX 4 |
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40 | |||
41 | void twi_init(void); |
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42 | void twi_setAddress(uint8_t);
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43 | uint8_t twi_readFrom(uint8_t, uint8_t*, uint8_t); |
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44 | uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t); |
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45 | uint8_t twi_transmit(const uint8_t*, uint8_t);
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46 | void twi_attachSlaveRxEvent( void (*)(uint8_t*, int) ); |
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47 | void twi_attachSlaveTxEvent( void (*)(void) ); |
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48 | void twi_reply(uint8_t);
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49 | void twi_stop(void); |
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50 | void twi_releaseBus(void); |
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51 | |||
52 | #endif
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