de/d95/ShiftRegisterOut_8ipp_source.html

#include "ExtendedInputOutput.hpp"

#include "ShiftRegisterOut.hpp"


BEGIN_AH_NAMESPACE


template <uint16_t N>

ShiftRegisterOut<N>::ShiftRegisterOut(pin_t dataPin, pin_t clockPin,

                                      pin_t latchPin, BitOrder_t bitOrder)

    : ShiftRegisterOutBase<N>(latchPin, bitOrder), dataPin(dataPin),

      clockPin(clockPin) {}


template <uint16_t N>

void ShiftRegisterOut<N>::begin() {

    ExtIO::pinMode(dataPin, OUTPUT);

    ExtIO::pinMode(clockPin, OUTPUT);

    ExtIO::pinMode(this->latchPin, OUTPUT);

    updateBufferedOutputs();

}


template <uint16_t N>

void ShiftRegisterOut<N>::updateBufferedOutputs() {

    if (!this->dirty)

        return;

    ExtIO::digitalWrite(this->latchPin, LOW);

    const uint8_t bufferLength = this->buffer.getBufferLength();

    if (this->bitOrder == LSBFIRST)

        for (uint8_t i = 0; i < bufferLength; i++)

            ExtIO::shiftOut(dataPin, clockPin, LSBFIRST,

                            this->buffer.getByte(i));

    else

        for (int8_t i = bufferLength - 1; i >= 0; i--)

            ExtIO::shiftOut(dataPin, clockPin, MSBFIRST,

                            this->buffer.getByte(i));


    ExtIO::digitalWrite(this->latchPin, HIGH);

    this->dirty = false;

}


END_AH_NAMESPACE

LOW
constexpr PinStatus_t LOW
Definition: Arduino-Hardware-Types.hpp:63

BitOrder_t
uint8_t BitOrder_t
Definition: Arduino-Hardware-Types.hpp:32

HIGH
constexpr PinStatus_t HIGH
Definition: Arduino-Hardware-Types.hpp:62

OUTPUT
constexpr PinMode_t OUTPUT
Definition: Arduino-Hardware-Types.hpp:65

ExtendedInputOutput.hpp

pin_t
uint16_t pin_t
The type for Arduino pins (and ExtendedIOElement pins).
Definition: Hardware-Types.hpp:17

END_AH_NAMESPACE
#define END_AH_NAMESPACE
Definition: NamespaceSettings.hpp:10

BEGIN_AH_NAMESPACE
#define BEGIN_AH_NAMESPACE
Definition: NamespaceSettings.hpp:9

ShiftRegisterOut.hpp

ShiftRegisterOutBase
A class for serial-in/parallel-out shift registers, like the 74HC595.
Definition: ShiftRegisterOutBase.hpp:26

ShiftRegisterOut::updateBufferedOutputs
void updateBufferedOutputs() override
Write the state buffer to the physical outputs.
Definition: ShiftRegisterOut.ipp:21

ShiftRegisterOut::ShiftRegisterOut
ShiftRegisterOut(pin_t dataPin, pin_t clockPin, pin_t latchPin, BitOrder_t bitOrder=MSBFIRST)
Create a new ShiftRegisterOut object with a shift register connected to the given pins,...
Definition: ShiftRegisterOut.ipp:7

ShiftRegisterOut::begin
void begin() override
Initialize the shift register.
Definition: ShiftRegisterOut.ipp:13

ExtIO::pinMode
void pinMode(pin_t pin, PinMode_t mode)
An ExtIO version of the Arduino function.
Definition: ExtendedInputOutput.cpp:40

ExtIO::shiftOut
void shiftOut(pin_t dataPin, pin_t clockPin, BitOrder_t bitOrder, uint8_t val)
An ExtIO version of the Arduino function.
Definition: ExtendedInputOutput.cpp:177

ExtIO::digitalWrite
void digitalWrite(pin_t pin, PinStatus_t val)
An ExtIO version of the Arduino function.
Definition: ExtendedInputOutput.cpp:54