Marcelo Aquino
2e0f6b6229
RPi and Linux refactor. Add GPIO Sysfs for GPIO operations. Update configure script. Fix some cppcheck warnings. Add serial emulation that prints to stdout. Fix some file headers.
95 lines
2.4 KiB
C++
95 lines
2.4 KiB
C++
/*
|
|
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
|
|
Modified December 2014 by Ivan Grokhotkov (ivan@esp8266.com) - esp8266 support
|
|
Modified April 2015 by Hrsto Gochkov (ficeto@ficeto.com) - alternative esp8266 support
|
|
Modified October 2016 by Marcelo Aquino <marceloaqno@gmail.org> for Raspberry Pi
|
|
*/
|
|
|
|
#ifndef Wire_h
|
|
#define Wire_h
|
|
|
|
#if !DOXYGEN
|
|
#include <stdint.h>
|
|
#include "Stream.h"
|
|
#include "RPi.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;
|
|
|
|
public:
|
|
void begin();
|
|
void begin(uint8_t address);
|
|
void begin(int address);
|
|
void end();
|
|
void setClock(uint32_t clock);
|
|
|
|
void beginTransmission(uint8_t address);
|
|
void beginTransmission(int address);
|
|
uint8_t endTransmission(void);
|
|
|
|
size_t requestFrom(uint8_t address, size_t size);
|
|
uint8_t requestFrom(uint8_t address, uint8_t quantity);
|
|
uint8_t requestFrom(int address, int quantity);
|
|
|
|
size_t write(uint8_t data);
|
|
size_t write(const uint8_t *data, size_t quantity);
|
|
int available();
|
|
int read();
|
|
int peek();
|
|
void flush();
|
|
|
|
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
|
|
#endif
|