Wire.h
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| text/x-c
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CLexer
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r132 | /* | ||
| TwoWire.h - TWI/I2C library for Arduino & Wiring | ||||
| 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 | ||||
| Modified 2012 by Todd Krein (todd@krein.org) to implement repeated starts | ||||
| */ | ||||
| #ifndef TwoWire_h | ||||
| #define TwoWire_h | ||||
| #include <inttypes.h> | ||||
| #include "Stream.h" | ||||
| #define BUFFER_LENGTH 32 | ||||
| class TwoWire : public Stream | ||||
| { | ||||
| private: | ||||
| static uint8_t rxBuffer[]; | ||||
| static uint8_t rxBufferIndex; | ||||
| static uint8_t rxBufferLength; | ||||
| static uint8_t txAddress; | ||||
| static uint8_t txBuffer[]; | ||||
| static uint8_t txBufferIndex; | ||||
| static uint8_t txBufferLength; | ||||
| static uint8_t transmitting; | ||||
| static void (*user_onRequest)(void); | ||||
| static void (*user_onReceive)(int); | ||||
| static void onRequestService(void); | ||||
| static void onReceiveService(uint8_t*, int); | ||||
| public: | ||||
| TwoWire(); | ||||
| void begin(); | ||||
| void begin(uint8_t); | ||||
| void begin(int); | ||||
| void beginTransmission(uint8_t); | ||||
| void beginTransmission(int); | ||||
| uint8_t endTransmission(void); | ||||
| uint8_t endTransmission(uint8_t); | ||||
| uint8_t requestFrom(uint8_t, uint8_t); | ||||
| uint8_t requestFrom(uint8_t, uint8_t, uint8_t); | ||||
| uint8_t requestFrom(int, int); | ||||
| uint8_t requestFrom(int, int, int); | ||||
| virtual size_t write(uint8_t); | ||||
| virtual size_t write(const uint8_t *, size_t); | ||||
| virtual int available(void); | ||||
| virtual int read(void); | ||||
| virtual int peek(void); | ||||
| virtual void flush(void); | ||||
| void onReceive( void (*)(int) ); | ||||
| void onRequest( void (*)(void) ); | ||||
| inline size_t write(unsigned long n) { return write((uint8_t)n); } | ||||
| inline size_t write(long n) { return write((uint8_t)n); } | ||||
| inline size_t write(unsigned int n) { return write((uint8_t)n); } | ||||
| inline size_t write(int n) { return write((uint8_t)n); } | ||||
| using Print::write; | ||||
| }; | ||||
| extern TwoWire Wire; | ||||
| #endif | ||||