ShiftRegistersInput Class Reference

State of switches connected to PISO shift registers. More...

#include <InputHardware.hpp>

Public Member Functions
	ShiftRegistersInput (OutputGPIO loadPin, OutputGPIO nextPin, InputGPIO inputPin, const ShiftRegisterChain &chain, InputNumber SER_inputNumber=UNSPECIFIED::VALUE, const bool loadHighOrLow=false, const bool nextHighToLowOrLowToHigh=false, const bool negativeLogic=true)
	Construct a new Shift Registers Input object.
virtual void	read (uint128_t &state) override
	Read the current state of the inputs (pressed or released)
Public Member Functions inherited from DigitalInput

Detailed Description

State of switches connected to PISO shift registers.

Definition at line 359 of file InputHardware.hpp.

Constructor & Destructor Documentation

ShiftRegistersInput()

ShiftRegistersInput::ShiftRegistersInput	(	OutputGPIO	loadPin,
		OutputGPIO	nextPin,
		InputGPIO	inputPin,
		const ShiftRegisterChain &	chain,
		InputNumber	SER_inputNumber = UNSPECIFIED::VALUE,
		const bool	loadHighOrLow = false,
		const bool	nextHighToLowOrLowToHigh = false,
		const bool	negativeLogic = true )

Construct a new Shift Registers Input object.

Parameters

loadPin	GPIO number of the load pin
nextPin	GPIO number of the next/clock pin
inputPin	GPIO number of the serial output pin
chain	Chain of PISO shift registers
SER_inputNumber	Input number assigned to the SER pin in the last chip of the chain.
loadHighOrLow	If true, parallel inputs are loaded when loadPinis HIGH. If false, parallel inputs are loaded when loadPinis LOW.
nextHighToLowOrLowToHigh	If true, next bit is selected when an high-to-low pulse is detected at nextPin. If false, next bit is selected when a low-to-high pulse is detected.
negativeLogic	If true, all switches must be pulled down (the default), If false, all switches must be pulled up (positive logic).

Member Function Documentation

read()

virtual void ShiftRegistersInput::read ( uint128_t & state )

overridevirtual

Read the current state of the inputs (pressed or released)

Warning

This function must not set or clear any bit outside of the input bitmask in the return value.

Parameters

[in,out]

state

At call, state of all inputs as recorded in the previous iteration. Whether the current state is unknown, state must be kept untouched. At return, new state of the inputs.

Implements DigitalInput.

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The documentation for this class was generated from the following file:

• /github/workspace/src/include/InputHardware.hpp