mirror of
https://github.com/RobTillaart/Arduino.git
synced 2024-10-03 18:09:02 -04:00
63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
|
#pragma once
|
||
|
|
//
|
||
|
|
// FILE: TCA9548.h
|
||
|
|
// AUTHOR: Rob Tillaart
|
||
|
|
// VERSION: 0.1.0
|
||
|
|
// DATE: 2021-03-16
|
||
|
|
// PURPOSE: Library for TCA9548 I2C multiplexer
|
||
|
|
//
|
||
|
|
// URL: https://github.com/RobTillaart/TCA9548
|
||
|
|
//
|
||
|
|
|
||
|
|
#include "Arduino.h"
|
||
|
|
#include "Wire.h"
|
||
|
|
|
||
|
|
|
||
|
|
#define TCA9548_LIB_VERSION (F("0.1.0"))
|
||
|
|
|
||
|
|
|
||
|
|
class TCA9548
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
// address = 0x70 .. 0x77
|
||
|
|
TCA9548(const uint8_t deviceAddress, TwoWire *wire = &Wire);
|
||
|
|
|
||
|
|
#if defined (ESP8266) || defined(ESP32)
|
||
|
|
bool begin(uint8_t sda, uint8_t scl, uint8_t mask = 0x00); // default no channels enabled
|
||
|
|
#endif
|
||
|
|
bool begin(uint8_t mask = 0x00); // default no channels enabled
|
||
|
|
bool isConnected(); // find multiplexer on I2C bus
|
||
|
|
bool isConnected(uint8_t address); // find any addr on I2C bus
|
||
|
|
|
||
|
|
// channel = 0.. 7
|
||
|
|
void enableChannel(uint8_t channel);
|
||
|
|
void disableChannel(uint8_t channel);
|
||
|
|
void selectChannel(uint8_t channel); // enable only this channel
|
||
|
|
bool isEnabled(uint8_t channel);
|
||
|
|
|
||
|
|
// mask = 0x00 .. 0xFF - every bit is a channel.
|
||
|
|
void setChannelMask(uint8_t mask);
|
||
|
|
uint8_t getChannelMask();
|
||
|
|
|
||
|
|
void setResetPin(uint8_t resetPin);
|
||
|
|
void reset(); // trigger reset pin
|
||
|
|
|
||
|
|
// set forced write
|
||
|
|
void setForced(bool forced) { _forced = forced; };
|
||
|
|
bool getForced() { return _forced; };
|
||
|
|
|
||
|
|
// TODO improve errorhandling ?
|
||
|
|
int getError();
|
||
|
|
|
||
|
|
private:
|
||
|
|
uint8_t _mask = 0x00; // caching mask
|
||
|
|
uint8_t _resetPin = -1;
|
||
|
|
int _error = 0;
|
||
|
|
uint8_t _address;
|
||
|
|
TwoWire* _wire;
|
||
|
|
bool _forced;
|
||
|
|
};
|
||
|
|
|
||
|
|
// -- END OF FILE --
|
||
|
|
|