diff options
Diffstat (limited to 'libraries/Wire/Wire.h')
-rw-r--r-- | libraries/Wire/Wire.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/libraries/Wire/Wire.h b/libraries/Wire/Wire.h new file mode 100644 index 0000000..732bdc3 --- /dev/null +++ b/libraries/Wire/Wire.h @@ -0,0 +1,80 @@ +/* + 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 setClock(uint32_t); + 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 + |