dispDrvSt7789 Class Reference

Driver for ST7789-based TFT displays. More...

#include <dispDrvSt7789.h>

Inheritance diagram for dispDrvSt7789:

Public Member Functions
	dispDrvSt7789 (int16_t cs, int16_t dc, int16_t mosi, int16_t sck, int16_t rst=-1, int16_t miso=-1)
	Constructor for the ST7789 display driver. More...
	~dispDrvSt7789 ()
	Destructor for the ST7789 display driver.
bool	begin () override
	Attempts to initialize the ST7789 TFT driver. More...
void	showSplash () override
	Displays the splash screen on the display.
virtual void	drawStatusBar (const char *io_username) override
	Draws a status bar at the top of the display. More...
void	updateStatusBar (int8_t rssi, uint8_t bat, bool mqtt_status) override
	Updates the status bar with current information (battery level, connectivity status, etc). More...
virtual void	writeMessage (const char *message) override
	Writes a message to the display. More...
Public Member Functions inherited from dispDrvBase
	dispDrvBase (int16_t dc, int16_t rst, int16_t cs, int16_t sram_cs=-1, int16_t busy=-1)
	Constructor for the base display driver for E-Ink displays. More...
	dispDrvBase (int8_t cs, int8_t dc, int8_t mosi, int8_t sck, int8_t rst=-1, int8_t miso=-1)
	Constructor for the base display driver for SPI TFT displays. More...
virtual	~dispDrvBase ()
	Destructor for the base display driver. This destructor is virtual to allow derived classes to clean up resources properly.
virtual bool	begin (thinkinkmode_t mode, bool reset=true)
	Attempts to initialize a ThinkInk EPD driver. More...
void	setWidth (int16_t w)
	Sets the width of the display. More...
void	setHeight (int16_t h)
	Sets the height of the display. More...
void	setRotation (uint8_t r)
	Sets the rotation of the display. More...
virtual void	setTextSize (uint8_t s)
	Sets the text size for the display. More...

Additional Inherited Members
Protected Attributes inherited from dispDrvBase
int16_t	_pin_dc
	Data/Command pin.
int16_t	_pin_rst
	Reset pin.
int16_t	_pin_cs
	Chip Select pin.
int16_t	_pin_busy
	Optional Busy pin.
int16_t	_pin_sram_cs
	Optional EPD SRAM chip select pin.
uint16_t	_pin_mosi
	Optional MOSI pin for SPI TFT displays.
uint16_t	_pin_miso
	Optional MISO pin for SPI TFT displays.
uint16_t	_pin_sck
	Optional SCK pin for SPI TFT displays.
uint8_t	_text_sz = 1
	Text size for displaying a message.
int16_t	_height
	Height of the display.
int16_t	_width
	Width of the display.
uint8_t	_rotation
	Rotation of the display.
int	_statusbar_icons_y
	Y position of status bar icons.
int	_statusbar_icon_battery_x
	X position of battery icon.
int	_statusbar_icon_wifi_x
	X position of WiFi icon.
int	_statusbar_icon_cloud_x
	X position of cloud icon.
int8_t	_statusbar_rssi
	RSSI value for status bar.
uint8_t	_statusbar_bat
	Battery level, as a percentage, for the status bar.
bool	_statusbar_mqtt_connected
	MQTT connection status for the status bar.

Detailed Description

Driver for ST7789-based TFT displays.

Constructor & Destructor Documentation

dispDrvSt7789()

dispDrvSt7789::dispDrvSt7789 ( int16_t  cs, int16_t  dc, int16_t  mosi, int16_t  sck, int16_t  rst = -1, int16_t  miso = -1  )

inline

Constructor for the ST7789 display driver.

Parameters

cs	Chip Select pin for the display.
dc	Data/Command pin for the display.
mosi	MOSI pin for the display.
sck	SCK pin for the display.
rst	Optional Reset pin for the display.
miso	Optional MISO pin for the display.

Member Function Documentation

begin()

bool dispDrvSt7789::begin ( )

inlineoverridevirtual

Attempts to initialize the ST7789 TFT driver.

Returns

True if the display was initialized successfully, false otherwise.

Reimplemented from dispDrvBase.

drawStatusBar()

virtual void dispDrvSt7789::drawStatusBar ( const char *  io_username )

inlineoverridevirtual

Draws a status bar at the top of the display.

Parameters

io_username

The Adafruit IO username to display on the status bar.

Reimplemented from dispDrvBase.

updateStatusBar()

void dispDrvSt7789::updateStatusBar ( int8_t  rssi, uint8_t  bat, bool  mqtt_status  )

inlineoverridevirtual

Updates the status bar with current information (battery level, connectivity status, etc).

Parameters

rssi	The current WiFi RSSI (signal strength) in dB.
bat	The current battery level as a percentage (0-100).
mqtt_status	The current MQTT connection status.

Reimplemented from dispDrvBase.

writeMessage()

virtual void dispDrvSt7789::writeMessage ( const char *  message )

inlineoverridevirtual

Writes a message to the display.

Parameters

message

The message to write to the display.

Note

This method overrides the base class method to provide specific functionality for the ST7789 driver.

Implements dispDrvBase.

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

• src/components/display/drivers/dispDrvSt7789.h