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me-no-dev
2016-10-06 14:21:30 +03:00
committed by Ivan Grokhotkov
parent 668acc2c08
commit 5f3a205955
657 changed files with 170176 additions and 0 deletions
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libraries/Wire/src/Wire.h Normal file
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/*
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
*/
#ifndef TwoWire_h
#define TwoWire_h
#include <esp32-hal.h>
#include "freertos/FreeRTOS.h"
#include "freertos/queue.h"
#define I2C_BUFFER_LENGTH 128
#define I2C0_DEFAULT_SDA_PIN 21
#define I2C0_DEFAULT_SCL_PIN 22
class TwoWire
{
protected:
uint8_t num;
int8_t sda;
int8_t scl;
i2c_t * i2c;
uint8_t rxBuffer[I2C_BUFFER_LENGTH];
uint16_t rxIndex;
uint16_t rxLength;
uint8_t txBuffer[I2C_BUFFER_LENGTH];
uint16_t txIndex;
uint16_t txLength;
uint8_t txAddress;
uint8_t transmitting;
public:
TwoWire(uint8_t bus_num);
void begin(int sda=-1, int scl=-1, uint32_t frequency=100000);
void setClock(uint32_t);
void beginTransmission(uint8_t);
void beginTransmission(int);
uint8_t endTransmission(void);
uint8_t endTransmission(uint8_t);
size_t requestFrom(uint8_t address, size_t size, bool sendStop);
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);
size_t write(uint8_t);
size_t write(const uint8_t *, size_t);
int available(void);
int read(void);
int peek(void);
void flush(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);
}
};
extern TwoWire Wire;
#endif