RC6502-Apple-1-Replica/software/arduino/PIA Communicator/lib/MCP23S17/MCP23S17.h

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/*
* 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