epaper::EPD27 Class Reference

2.7 inch e-paper display driver (176x264 pixels). More...

#include <epd27.hpp>

Public Member Functions
	EPD27 (Device::HalSpi spi, Device::HalOutput cs, Device::HalOutput dc, Device::HalOutput rst, Device::HalInput busy, std::optional< Device::HalOutput > pwr=std::nullopt)
	Construct EPD27 driver with direct hardware resources.
	EPD27 (Device &device, EPD27PinConfig pins)
	Construct using custom pin configuration.
	EPD27 (Device &device)
	Construct using default Waveshare HAT pins.
	~EPD27 ()=default
auto	init (DisplayMode mode) -> std::expected< void, Error >
auto	clear () -> std::expected< void, Error >
auto	display (std::span< const std::byte > buffer) -> std::expected< void, Error >
auto	display_planes (std::span< const std::span< const std::byte > > planes) -> std::expected< void, Error >
auto	sleep () -> std::expected< void, Error >
auto	wake () -> std::expected< void, Error >
auto	power_off () -> std::expected< void, Error >
auto	power_on () -> std::expected< void, Error >
auto	mode () const noexcept -> DisplayMode
auto	buffer_size () const noexcept -> std::size_t

Static Public Member Functions
static auto	width () noexcept -> std::size_t
static auto	height () noexcept -> std::size_t
static auto	supports_partial_refresh () noexcept -> bool
static auto	supports_power_control () noexcept -> bool
static auto	supports_wake () noexcept -> bool

Static Public Attributes
static constexpr std::size_t	WIDTH = 176
static constexpr std::size_t	HEIGHT = 264

Detailed Description

2.7 inch e-paper display driver (176x264 pixels).

2.7 inch e-paper display driver for Linux (Raspberry Pi).

Constructor & Destructor Documentation

EPD27() [1/3]

epaper::EPD27::EPD27 ( Device::HalSpi  spi, Device::HalOutput  cs, Device::HalOutput  dc, Device::HalOutput  rst, Device::HalInput  busy, std::optional< Device::HalOutput >  pwr = std::nullopt  )

inline

Construct EPD27 driver with direct hardware resources.

Parameters

spi	SPI bus instance
cs	Chip Select pin
dc	Data/Command pin
rst	Reset pin
busy	Busy signal pin
pwr	Optional power control pin

EPD27() [2/3]

epaper::EPD27::EPD27 ( Device &  device, EPD27PinConfig  pins  )

inline

Construct using custom pin configuration.

Parameters

device	Initialized Linux device
pins	Pin map

EPD27() [3/3]

epaper::EPD27::EPD27 ( Device &  device )

inlineexplicit

Construct using default Waveshare HAT pins.

Parameters

device

Initialized Linux device

~EPD27()

epaper::EPD27::~EPD27 ( )

default

Member Function Documentation

buffer_size()

auto epaper::EPD27::buffer_size ( ) const -> std::size_t

inlinenoexcept

clear()

auto epaper::EPD27::clear ( ) -> std::expected<void, Error>

inline

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display()

auto epaper::EPD27::display ( std::span< const std::byte >  buffer ) -> std::expected<void, Error>

inline

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display_planes()

auto epaper::EPD27::display_planes ( std::span< const std::span< const std::byte > >  planes ) -> std::expected<void, Error>

inline

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height()

static auto epaper::EPD27::height ( ) -> std::size_t

inlinestaticnoexcept

init()

auto epaper::EPD27::init ( DisplayMode  mode ) -> std::expected<void, Error>

inline

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mode()

auto epaper::EPD27::mode ( ) const -> DisplayMode

inlinenoexcept

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power_off()

auto epaper::EPD27::power_off ( ) -> std::expected<void, Error>

inline

power_on()

auto epaper::EPD27::power_on ( ) -> std::expected<void, Error>

inline

sleep()

auto epaper::EPD27::sleep ( ) -> std::expected<void, Error>

inline

supports_partial_refresh()

static auto epaper::EPD27::supports_partial_refresh ( ) -> bool

inlinestaticnoexcept

supports_power_control()

static auto epaper::EPD27::supports_power_control ( ) -> bool

inlinestaticnoexcept

supports_wake()

static auto epaper::EPD27::supports_wake ( ) -> bool

inlinestaticnoexcept

wake()

auto epaper::EPD27::wake ( ) -> std::expected<void, Error>

inline

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width()

static auto epaper::EPD27::width ( ) -> std::size_t

inlinestaticnoexcept

Member Data Documentation

HEIGHT

constexpr std::size_t epaper::EPD27::HEIGHT = 264

staticconstexpr

WIDTH

constexpr std::size_t epaper::EPD27::WIDTH = 176

staticconstexpr

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

• include/epaper/drivers/epd27.hpp