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107 lines
2.2 KiB
C++
107 lines
2.2 KiB
C++
#pragma once
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//
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// FILE: MAX14661.h
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// AUTHOR: Rob Tillaart
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// DATE: 2021-01-29
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// VERSION: 0.1.0
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// PURPOSE: Arduino library for MAX14661 16 channel I2C multiplexer
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// URL: https://github.com/RobTillaart/MAX14661
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//
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// - initial version has only support for opening and closing channels
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// by means of the direct access register.
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// - no support for shadow registers
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#include "Arduino.h"
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#include "Wire.h"
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#define MAX14661_LIB_VERSION (F("0.1.0"))
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class MAX14661
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{
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public:
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explicit MAX14661(const uint8_t deviceAddress, TwoWire *wire = &Wire);
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#if defined (ESP8266) || defined(ESP32)
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bool begin(uint8_t sda, uint8_t scl);
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#endif
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bool begin();
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bool isConnected();
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//
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// PAIR INTERFACE
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// - keeps A and B line in sync, ideal for an I2C bus
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// - returns false if channel nr > 15
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//
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// open ==> connect
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bool openChannel(uint8_t channel);
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// close ==> disconnect
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bool closeChannel(uint8_t channel);
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// returns true if channel is opened
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bool isOpenChannel(uint8_t channel);
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// open A and B lines of all channels
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void openAllChannels();
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// closes A and B lines of all channels
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void closeAllChannels();
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// set channels with a bit mask
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void setChannels(uint16_t mask);
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// returns channel state as bit mask
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uint16_t getChannels();
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//
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//
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// SHADOW INTERFACE
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//
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// TODO reg 0x10 ..0x13
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//
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// openShadow(channel)
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// closeShadow(channel)
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// sync () - reg 14 / 15 10001
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//
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// MUX INTERFACE
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// - allows only one channel simultaneously
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//
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void MUXA(uint8_t channel); // 0..15, else ==> off
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uint8_t getMUXA();
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void MUXB(uint8_t channel); // 0..15, else ==> off
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uint8_t getMUXB();
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//
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// FULL CONTROL PER A B LINE
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// - selective open and close A and B
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// - returns false if channel nr > 15
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//
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bool openA(uint8_t channel);
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bool openB(uint8_t channel);
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bool closeA(uint8_t channel);
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bool closeB(uint8_t channel);
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// LOW LEVEL CONTROL
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uint8_t readRegister(uint8_t reg);
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int writeRegister(uint8_t reg, uint8_t value);
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int lastError();
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private:
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uint8_t _address;
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TwoWire* _wire;
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int _error;
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// cache direct registers?
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};
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// -- END OF FILE --
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