Sorry to be a pest but altered the .h file and would not compile.
Altered the .cpp file and it compiled and uploaded but the end result was
no different.
Works fine but output is 2 pins out.(Sketch calls P12 but P14 is pulled low.
In case I have missed something I have attached the altered copies of both
.h & .cpp files.
Tx.
.h FILE
/*
* PCF8575 GPIO Port Expand
* https://www.mischianti.org/2019/07/22/pcf8575-i2c-16-bit-digital-i-o-expander/
*
* The MIT License (MIT)
*
* Copyright (c) 2019 Renzo Mischianti www.mischianti.org All right reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef PCF8575_h
#define PCF8575_h
#include "Wire.h"
#if ARDUINO >= 100
#include "Arduino.h"
#else
#include "WProgram.h"
#endif
// Uncomment to enable printing out nice debug messages.
// #define PCF8575_DEBUG
// Uncomment for low memory usage this prevent use of complex DigitalInput structure and free 7byte of memory
// #define PCF8575_LOW_MEMORY
// Define where debug output will be printed.
#define DEBUG_PRINTER Serial
// Setup debug printing macros.
#ifdef PCF8575_DEBUG
#define DEBUG_PRINT(...) { DEBUG_PRINTER.print(__VA_ARGS__); }
#define DEBUG_PRINTLN(...) { DEBUG_PRINTER.println(__VA_ARGS__); }
#else
#define DEBUG_PRINT(...) {}
#define DEBUG_PRINTLN(...) {}
#endif
#define READ_ELAPSED_TIME 10
//#define P0 B00000001
//#define P1 B00000010
//#define P2 B00000100
//#define P3 B00001000
//#define P4 B00010000
//#define P5 B00100000
//#define P6 B01000000
//#define P7 B10000000
//
#define P0 0
#define P1 1
#define P2 2
#define P3 3
#define P4 4
#define P5 5
#define P6 6
#define P7 7
//***********************************************************DELETED************
#define P10 10
#define P11 11
#define P12 12
#define P13 13
#define P14 14
#define P15 15
//***********************************************************ADDED************
#define P8 16
#define P9 17
#include <math.h>
class PCF8575 {
public:
PCF8575(uint8_t address);
PCF8575(uint8_t address, uint8_t interruptPin, void (*interruptFunction)() );
#if !defined(__AVR) && !defined(__STM32F1__)
PCF8575(uint8_t address, uint8_t sda, uint8_t scl);
PCF8575(uint8_t address, uint8_t sda, uint8_t scl, uint8_t interruptPin, void (*interruptFunction)());
#endif
#ifdef ESP32
///// changes for second i2c bus
PCF8575(TwoWire *pWire, uint8_t address);
PCF8575(TwoWire *pWire, uint8_t address, uint8_t sda, uint8_t scl);
PCF8575(TwoWire *pWire, uint8_t address, uint8_t interruptPin, void (*interruptFunction)() );
PCF8575(TwoWire *pWire, uint8_t address, uint8_t sda, uint8_t scl, uint8_t interruptPin, void (*interruptFunction)());
#endif
void begin();
void pinMode(uint8_t pin, uint8_t mode);
void readBuffer(bool force = true);
uint8_t digitalRead(uint8_t pin);
#ifndef PCF8575_LOW_MEMORY
struct DigitalInput {
uint8_t p0;
uint8_t p1;
uint8_t p2;
uint8_t p3;
uint8_t p4;
uint8_t p5;
uint8_t p6;
uint8_t p7;
//****************************************************DELETED***************
uint8_t p10;
uint8_t p11;
uint8_t p12;
uint8_t p13;
uint8_t p14;
uint8_t p15;
//****************************************************ADDED***************
uint8_t p16;
uint8_t p17;
} digitalInput;
DigitalInput digitalReadAll(void);
#else
uint16_t digitalReadAll(void);
#endif
void digitalWrite(uint8_t pin, uint8_t value);
private:
uint8_t _address;
#if defined(__AVR) || defined(__STM32F1__)
uint8_t _sda;
uint8_t _scl;
#else
uint8_t _sda = SDA;
uint8_t _scl = SCL;
#endif
TwoWire *_wire;
bool _usingInterrupt = false;
uint8_t _interruptPin = 2;
void (*_interruptFunction)(){};
uint16_t writeMode = 0;
uint16_t readMode = 0;
uint16_t byteBuffered = 0;
unsigned long lastReadMillis = 0;
uint16_t writeByteBuffered = 0;
};
#endif
.cpp File follows as exceeded permitted characters
Particularly section 8.1.
