GY-63_MS5611/libraries/HC4051/HC4051.h
2023-11-04 14:18:31 +01:00

97 lines
1.5 KiB
C++

#pragma once
//
// FILE: HC4051.h
// AUTHOR: Rob Tillaart
// DATE: 2023-01-25
// VERSION: 0.1.1
// PURPOSE: Arduino library for CD74HC4051 1x8 channel multiplexer and compatibles.
// URL: https://github.com/RobTillaart/HC4051
#include "Arduino.h"
#define HC4051_LIB_VERSION (F("0.1.1"))
class HC4051
{
public:
explicit HC4051(uint8_t A, uint8_t B, uint8_t C, uint8_t enablePin = 255)
{
_pins[0] = A;
_pins[1] = B;
_pins[2] = C;
uint8_t i = 3;
while (i--)
{
pinMode(_pins[i], OUTPUT);
digitalWrite(_pins[i], LOW);
}
_channel = 0;
if (enablePin != 255)
{
_enablePin = enablePin;
pinMode(_enablePin, OUTPUT);
digitalWrite(_enablePin, HIGH);
}
}
void setChannel(uint8_t channel)
{
if ((channel & 0x07) != _channel)
{
_channel = channel & 0x07;
digitalWrite(_pins[0], _channel & 0x01);
digitalWrite(_pins[1], _channel & 0x02);
digitalWrite(_pins[2], _channel & 0x04);
}
}
uint8_t getChannel()
{
return _channel;
}
void enable()
{
if (_enablePin != 255)
{
digitalWrite(_enablePin, LOW);
}
}
void disable()
{
if (_enablePin != 255)
{
digitalWrite(_enablePin, HIGH);
}
}
bool isEnabled()
{
if (_enablePin != 255)
{
return (digitalRead(_enablePin) == LOW);
}
return true;
}
private:
uint8_t _pins[3];
uint8_t _enablePin = 255;
uint8_t _channel = 0;
};
// -- END OF FILE --