mirror of
https://github.com/RobTillaart/Arduino.git
synced 2024-10-03 18:09:02 -04:00
57 lines
1.2 KiB
C++
57 lines
1.2 KiB
C++
#pragma once
|
|
//
|
|
// FILE: MCP23017.h
|
|
// AUTHOR: Rob Tillaart
|
|
// VERSION: 0.2.2
|
|
// PURPOSE: Arduino library for I2C MCP23017 16 channel port expander
|
|
// DATE: 2019-10-12
|
|
// URL: https://github.com/RobTillaart/MCP23017_RT
|
|
|
|
|
|
#include "Arduino.h"
|
|
#include "Wire.h"
|
|
|
|
|
|
#define MCP23017_LIB_VERSION (F("0.2.2"))
|
|
|
|
#define MCP23017_OK 0x00
|
|
#define MCP23017_PIN_ERROR 0x81
|
|
#define MCP23017_I2C_ERROR 0x82
|
|
#define MCP23017_VALUE_ERROR 0x83
|
|
#define MCP23017_PORT_ERROR 0x84
|
|
|
|
|
|
class MCP23017
|
|
{
|
|
public:
|
|
MCP23017(uint8_t addr, TwoWire *wire = &Wire);
|
|
|
|
#if defined(ESP8266) || defined(ESP32)
|
|
bool begin(const uint8_t dataPin, const uint8_t clockPin);
|
|
#endif
|
|
bool begin();
|
|
bool isConnected();
|
|
|
|
// single pin interface
|
|
bool pinMode(uint8_t pin, uint8_t value);
|
|
bool digitalWrite(uint8_t pin, uint8_t value);
|
|
uint8_t digitalRead(uint8_t pin);
|
|
|
|
// 8 pins interface
|
|
bool pinMode8(uint8_t port, uint8_t value);
|
|
bool write8(uint8_t port, uint8_t value);
|
|
int read8(uint8_t port);
|
|
|
|
int lastError();
|
|
|
|
private:
|
|
bool writeReg(uint8_t reg, uint8_t value);
|
|
uint8_t readReg(uint8_t reg);
|
|
|
|
uint8_t _addr;
|
|
TwoWire* _wire;
|
|
uint8_t _error;
|
|
};
|
|
|
|
// -- END OF FILE --
|