74HC154

Arduino library for the 74HC154 4-to-16 line decoder/demultiplexer.

Description

This library controls the 74HC154 4 to 6 line decoder. With 4 IO lines one can select one of 16 output lines.

https://github.com/RobTillaart/74HC138 (3 to 8 selector)
https://github.com/RobTillaart/74HC154 (4 to 16 selector)
https://github.com/RobTillaart/HC4051 (1x8 mux)
https://github.com/RobTillaart/HC4052 (2x4 mux)
https://github.com/RobTillaart/HC4053 (3x2 mux)
https://github.com/RobTillaart/HC4067 (1x16 mux)

Interface

#include "74HC154.h"

Constructor

74HC154(uint8_t pin0, uint8_t pin1, uint8_t pin2, uint8_t pin3, uint8_t pinEnable = 255) set the 4 selection IO lines from pin numbers. Optionally set the enable pin, connect to E1 or E2, see datasheet.
74HC154(uint8_t * pins, uint8_t pinEnable = 255) set the 4 selection IO lines from an array. The pins array should have at least 4 elements. Optionally set the enable pin, connect to E1, see datasheet.

Select line

bool setLine(uint8_t line) set line 0 .. 15. Returns false if out of range.
uint8_t getLine() returns 0 .. 15
void nextLine() selects the next line, wraps back to 0 if needed.
void prevLine() selects the previous line, wraps to 15 if needed.

Enable

Works only if enable line is set in constructor.

void enable() enables output / selection.
void disable() disables output / selection.
bool isEnabled() checks if line is enabled.

Future

Must

improve documentation
get hardware to test

Should

Could

Wont

Support

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Thank you,

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