mirror of
https://github.com/arduino/Arduino.git
synced 2024-12-04 15:24:12 +01:00
92 lines
2.3 KiB
C++
92 lines
2.3 KiB
C++
/*
|
|
* DueWire.h - TWI/I2C library for Arduino Due
|
|
* Copyright (c) 2011 Cristian Maglie <c.maglie@bug.st>.
|
|
* 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 DueWire_h
|
|
#define DueWire_h
|
|
|
|
#include <inttypes.h>
|
|
#include "Stream.h"
|
|
#include "twi.h"
|
|
|
|
#define BUFFER_LENGTH 32
|
|
|
|
class DueWire: public Stream {
|
|
public:
|
|
DueWire(Twi *);
|
|
void begin();
|
|
void begin(uint8_t);
|
|
void begin(int);
|
|
void beginTransmission(uint8_t);
|
|
void beginTransmission(int);
|
|
uint8_t endTransmission(void);
|
|
uint8_t requestFrom(uint8_t, uint8_t);
|
|
uint8_t requestFrom(int, int);
|
|
virtual void write(uint8_t);
|
|
virtual void write(const char *);
|
|
virtual void 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));
|
|
|
|
void onService(void);
|
|
|
|
private:
|
|
// RX Buffer
|
|
uint8_t rxBuffer[BUFFER_LENGTH];
|
|
uint8_t rxBufferIndex;
|
|
uint8_t rxBufferLength;
|
|
|
|
// TX Buffer
|
|
uint8_t txAddress;
|
|
uint8_t txBuffer[BUFFER_LENGTH];
|
|
uint8_t txBufferLength;
|
|
|
|
// Service buffer
|
|
uint8_t srvBuffer[BUFFER_LENGTH];
|
|
uint8_t srvBufferIndex;
|
|
uint8_t srvBufferLength;
|
|
|
|
// Callback user functions
|
|
void (*onRequestCallback)(void);
|
|
void (*onReceiveCallback)(int);
|
|
|
|
// TWI instance
|
|
Twi *twi;
|
|
|
|
// TWI state
|
|
static const uint8_t UNINITIALIZED = 0;
|
|
static const uint8_t MASTER_IDLE = 1;
|
|
static const uint8_t MASTER_SEND = 2;
|
|
static const uint8_t MASTER_RECV = 3;
|
|
static const uint8_t SLAVE_IDLE = 4;
|
|
static const uint8_t SLAVE_RECV = 5;
|
|
static const uint8_t SLAVE_SEND = 6;
|
|
uint8_t status;
|
|
};
|
|
|
|
extern DueWire Wire;
|
|
extern DueWire Wire2;
|
|
|
|
#endif
|
|
|