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/*

  twi.h - TWI/I2C library for Wiring & Arduino

  Copyright (c) 2006 Nicholas Zambetti.  All right reserved.

  This library is free software; you can redistribute it and/or

  modify it under the terms of the GNU Lesser General Public

  License as published by the Free Software Foundation; either

  version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,

  but WITHOUT ANY WARRANTY; without even the implied warranty of

  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public

  License along with this library; if not, write to the Free Software

  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

*/

#ifndef twi_h

#define twi_h

  #include <inttypes.h>

  //#define ATMEGA8

  #ifndef TWI_FREQ

  #define TWI_FREQ 100000L

  #endif

  #ifndef TWI_BUFFER_LENGTH

  #define TWI_BUFFER_LENGTH 32

  #endif

  #define TWI_READY 0

  #define TWI_MRX   1

  #define TWI_MTX   2

  #define TWI_SRX   3

  #define TWI_STX   4

  void twi_init(void);

  void twi_setAddress(uint8_t);

  uint8_t twi_readFrom(uint8_t, uint8_t*, uint8_t);

  uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t);

  uint8_t twi_transmit(const uint8_t*, uint8_t);

  void twi_attachSlaveRxEvent( void (*)(uint8_t*, int) );

  void twi_attachSlaveTxEvent( void (*)(void) );

  void twi_reply(uint8_t);

  void twi_stop(void);

  void twi_releaseBus(void);

#endif