mirror of
https://github.com/RobTillaart/Arduino.git
synced 2024-09-19 16:46:11 -04:00
79 lines
1.7 KiB
C++
79 lines
1.7 KiB
C++
#pragma once
|
|
//
|
|
// FILE: MCP23008.h
|
|
// AUTHOR: Rob Tillaart
|
|
// VERSION: 0.3.2
|
|
// PURPOSE: Arduino library for I2C MCP23008 8 channel port expander
|
|
// DATE: 2022-01-10
|
|
// URL: https://github.com/RobTillaart/MCP23008
|
|
|
|
|
|
#include "Arduino.h"
|
|
#include "Wire.h"
|
|
|
|
|
|
#define MCP23008_LIB_VERSION (F("0.3.2"))
|
|
|
|
#define MCP23008_OK 0x00
|
|
#define MCP23008_PIN_ERROR 0x81
|
|
#define MCP23008_I2C_ERROR 0x82
|
|
#define MCP23008_VALUE_ERROR 0x83
|
|
#define MCP23008_PORT_ERROR 0x84
|
|
|
|
|
|
#define MCP23008_INVALID_READ -100
|
|
|
|
|
|
class MCP23008
|
|
{
|
|
public:
|
|
MCP23008(uint8_t address, TwoWire *wire = &Wire);
|
|
|
|
bool begin(bool pullup = true);
|
|
bool isConnected();
|
|
uint8_t getAddress();
|
|
|
|
|
|
// single pin interface
|
|
// mode = INPUT, OUTPUT or INPUT_PULLUP (== INPUT)
|
|
bool pinMode1(uint8_t pin, uint8_t mode);
|
|
bool write1(uint8_t pin, uint8_t value);
|
|
uint8_t read1(uint8_t pin);
|
|
|
|
bool setPolarity(uint8_t pin, bool reversed);
|
|
bool getPolarity(uint8_t pin, bool &reversed);
|
|
bool setPullup(uint8_t pin, bool pullup);
|
|
bool getPullup(uint8_t pin, bool &pullup);
|
|
|
|
|
|
// 8 pins interface
|
|
// value = bit pattern
|
|
bool pinMode8(uint8_t value);
|
|
bool write8(uint8_t value);
|
|
int read8();
|
|
|
|
bool setPolarity8(uint8_t mask);
|
|
bool getPolarity8(uint8_t &mask);
|
|
bool setPullup8(uint8_t mask);
|
|
bool getPullup8(uint8_t &mask);
|
|
|
|
|
|
int lastError();
|
|
|
|
// DEBUG functions
|
|
uint8_t getPinMode8();
|
|
|
|
|
|
private:
|
|
bool writeReg(uint8_t reg, uint8_t value);
|
|
uint8_t readReg(uint8_t reg);
|
|
|
|
uint8_t _address;
|
|
TwoWire* _wire;
|
|
uint8_t _error;
|
|
};
|
|
|
|
|
|
// -- END OF FILE --
|
|
|