105 lines
3.6 KiB
C++
105 lines
3.6 KiB
C++
/*
|
|
* Copyright (c) , Majenko Technologies
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without modification,
|
|
* are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* 3. Neither the name of Majenko Technologies nor the names of its contributors may be used
|
|
* to endorse or promote products derived from this software without
|
|
* specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
|
|
#ifndef _MCP23S17_H
|
|
#define _MCP23S17_H
|
|
|
|
#if (ARDUINO >= 100)
|
|
# include <Arduino.h>
|
|
#else
|
|
# include <WProgram.h>
|
|
#endif
|
|
|
|
#ifdef __PIC32MX__
|
|
#include <DSPI.h>
|
|
#else
|
|
#include <SPI.h>
|
|
#endif
|
|
|
|
class MCP23S17 {
|
|
private:
|
|
#ifdef __PIC32MX__
|
|
DSPI *_spi; /*! This points to a valid SPI object created from the chipKIT DSPI library. */
|
|
#else
|
|
SPIClass *_spi; /*! This points to a valid SPI object created from the Arduino SPI library. */
|
|
#endif
|
|
uint8_t _cs; /*! Chip select pin */
|
|
uint8_t _addr; /*! 3-bit chip address */
|
|
|
|
uint8_t _reg[22]; /*! Local mirrors of the 22 internal registers of the MCP23S17 chip */
|
|
|
|
enum {
|
|
IODIRA, IODIRB,
|
|
IPOLA, IPOLB,
|
|
GPINTENA, GPINTENB,
|
|
DEFVALA, DEFVALB,
|
|
INTCONA, INTCONB,
|
|
IOCONA, IOCONB,
|
|
GPPUA, GPPUB,
|
|
INTFA, INTFB,
|
|
INTCAPA, INTCAPB,
|
|
GPIOA, GPIOB,
|
|
OLATA, OLATB
|
|
};
|
|
|
|
void readRegister(uint8_t addr);
|
|
void writeRegister(uint8_t addr);
|
|
void readAll();
|
|
void writeAll();
|
|
|
|
public:
|
|
#ifdef __PIC32MX__
|
|
MCP23S17(DSPI *spi, uint8_t cs, uint8_t addr);
|
|
MCP23S17(DSPI &spi, uint8_t cs, uint8_t addr);
|
|
#else
|
|
MCP23S17(SPIClass *spi, uint8_t cs, uint8_t addr);
|
|
MCP23S17(SPIClass &spi, uint8_t cs, uint8_t addr);
|
|
#endif
|
|
void begin();
|
|
void pinMode(uint8_t pin, uint8_t mode);
|
|
void digitalWrite(uint8_t pin, uint8_t value);
|
|
uint8_t digitalRead(uint8_t pin);
|
|
|
|
uint8_t readPort(uint8_t port);
|
|
uint16_t readPort();
|
|
void writePort(uint8_t port, uint8_t val);
|
|
void writePort(uint16_t val);
|
|
void enableInterrupt(uint8_t pin, uint8_t type);
|
|
void disableInterrupt(uint8_t pin);
|
|
void setMirror(boolean m);
|
|
uint16_t getInterruptPins();
|
|
uint16_t getInterruptValue();
|
|
void setInterruptLevel(uint8_t level);
|
|
void setInterruptOD(boolean openDrain);
|
|
|
|
};
|
|
#endif
|