RTOS version of the ST7735 display device. More...

#include <st7735.h>

Inheritance diagram for rtos_ST7735:

Collaboration diagram for rtos_ST7735:

Public Member Functions
	rtos_ST7735 (rtos_HW_SPI_Master *spi, struct_ConfigST7735 device_config)
	Construct a new rtos_ST7735 object.

void	show_from_display_queue (struct_WidgetDataToGateKeeper data_to_show)
	Show data from the display queue.

void	show_widget (rtos_Widget *widget)
	Show the widget on the display device.

void	show (Canvas *canvas, const uint8_t anchor_x, const uint8_t anchor_y)
	A pure virtual member function. It transfers the pixel buffer to the a part of display screen buffer starting at the (anchor_x, anchor_y) coordinates of the screen , expressed in pixel. This method takes into account the specific addressing scheme and memory structure of the actual display device.

void	clear_device_screen_buffer ()
	Clear the device screen buffer.

void	check_rtos_display_device_compatibility (struct_ConfigGraphicWidget framebuffer_cfg, CanvasFormat canvas_format)
	Check the compatibility of the framebuffer configuration with the display device physical limitations.

Public Member Functions inherited from ST7735
	ST7735 (HW_SPI_Master *spi, struct_ConfigST7735 device_config)
	Construct a new ST7735 object.

void	set_rotation_and_color (struct_ConfigST7735 device_config)
	set the actual position of the display

void	set_display_ON ()
	Set the display ON object.

void	set_display_OFF ()
	Set the display OFF object.

void	enable_sleep (bool enable)
	turn the display in sleep mode on/off

void	check_display_device_compatibility (struct_ConfigGraphicWidget framebuffer_cfg, CanvasFormat canvas_format)
	A pure virtual member function. Each device must implement this method and check the compatibility of the widget parameter with the its physical limitations.

virtual void	clear_device_screen_buffer (ColorIndex color_index=ColorIndex::BLACK)
	fill the internal ST7735 screen buffer with the given color. Default to BLACK, clear the internal buffer

Public Member Functions inherited from GraphicDisplayDevice
	GraphicDisplayDevice (size_t screen_width, size_t screen_height)
	Construct a new Display Device object.

virtual	~GraphicDisplayDevice ()
	Destroy the Display Device object.

Additional Inherited Members
Public Attributes inherited from GraphicDisplayDevice
size_t	TFT_panel_width_in_pixel
	the physical width of the screen (in pixel)

size_t	TFT_panel_height_in_pixel
	the physical height of the screen (in pixel)

Public Attributes inherited from rtos_DisplayDevice
SemaphoreHandle_t	display_device_mutex
	the mutex to protect the display device access

Protected Member Functions inherited from ST7735
void	enable_command_pin (bool enable)
	enable or disable the command mode (DC pin low or high)

void	hardware_reset ()
	hardware reset of the ST7735 device

void	init_pins ()
	initialize pins for the ST7735 device

void	device_wakeup ()
	wake up the device from sleep mode

void	config_frame_rate_control ()
	config framerate control

void	config_inversion_control ()
	config display inversion control

void	config_power_control ()
	config power control

void	config_gamma ()
	column row address set CASET , [0x00,0x01,0x00, width-1] RASET , [0x00,0x01,0x00, height-1] we start column 1

void	set_normal_mode ()
	_set display normal ON NORON , sleep 10ms

void	config_device_specific_size_and_offsets (struct_ConfigST7735 device_config)
	config specific device size and offsets

void	send_cmd (uint8_t cmd)
	send a command to the ST7735 device

void	send_cmd_list (uint8_t *cmd, size_t len)
	send a list of command to the ST7735 device

void	send_buffer (uint8_t *buffer, size_t buffer_len)
	send a buffer of data to the ST7735 device

void	set_backlight (bool on)
	set the backlight of the display

void	soft_reset ()
	perform a software reset of the display

void	set_RAM_write_addresses (uint8_t start_x, uint8_t start_y, size_t width, size_t height)
	set the RAM write addresses for the display

Protected Attributes inherited from ST7735
HW_SPI_Master *	spi
	SPI driver associated with the display.

uint	dc_pin
	the GPIO connected to the Data/Command_ input

uint	backlight_pin
	the GPIO connected to the backlight input

uint	hw_reset_pin
	the GPIO connected to the hardware reset input

uint8_t	ST7735_device_column_offset {0}
	the column offset for the ST7735 device

uint8_t	ST7735_device_row_offset {0}
	the row offset for the ST7735 device

uint8_t	TFT_panel_start_x {0}
	the x starting position of the TFT panel within the ST7735 memory

uint8_t	TFT_panel_start_y {0}
	the y starting position of the TFT panel within the ST7735 memory

bool	rgb_order
	a flag that indicates if the color order is RGB (true) or BGR (false)

Detailed Description

RTOS version of the ST7735 display device.

Constructor & Destructor Documentation

◆ rtos_ST7735()

rtos_ST7735::rtos_ST7735	(	rtos_HW_SPI_Master *	spi,
		struct_ConfigST7735	device_config )

Construct a new rtos_ST7735 object.

init for "red tab" version of display ... I don't know why _ wake up_ harware_reset SW_reset, sleep 150us SLPOUT, sleep 150us Frame rate control FRMCTR1 , [0x01, 0x2C, 0x2D] fastest refresh, 6 lines front, 3 lines back FRMCTR2 , [0x01, 0x2C, 0x2D] FRMCTR3 , [0x01, 0x2c, 0x2d, 0x01, 0x2c, 0x2d], sleep 10us display inversion control INVCTR , [0x07] power control PWCTR1 , [0xA2,0x02,0x84] PWCTR2 , [0xC5] VGH = 14.7V, VGL = -7.35V PWCTR3 , [0x0A, 0x00] opamp current small, boost frequency PWCTR4 , [0x8A, 0x2A] opamp current small, boost frequency PWCTR5 , [0x8A, 0xEE] opamp current small, boost frequency VMCTR1 , [0x0E] set rotation and color ---> MADCTL , [rotation and RBG] [0xC8]

Parameters

spi	the rtos_HW_SPI_Master associated driver
device_config	the device configuration file

COLMOD , [0x05] column row address set ---> CASET , [0x00,0x0_0_,0x00, width-1] ---> RASET , [0x00,0x0_0_,0x00, height-1]

gamma ---> GMCTRP1 , [0x0f, 0x1a, 0x0f, 0x18, 0x2f, 0x28, 0x20, 0x22, 0x1f, 0x1b, 0x23, 0x37, 0x00, 0x07, 0x02, 0x10] ---> GMCTRN1 , [0x0f, 0x1b, 0x0f, 0x17, 0x33, 0x2c, 0x29, 0x2e, 0x30, 0x30, 0x39, 0x3f, 0x00, 0x07, 0x03, 0x10] _set display normal ON ---> DISPON NORON , sleep 10us

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Member Function Documentation

◆ check_rtos_display_device_compatibility()

void rtos_ST7735::check_rtos_display_device_compatibility	(	struct_ConfigGraphicWidget	framebuffer_cfg,
		CanvasFormat	canvas_format )

virtual

Check the compatibility of the framebuffer configuration with the display device physical limitations.

Parameters

framebuffer_cfg	the widget configuration data
canvas_format	the format of the canvas

Implements rtos_GraphicDisplayDevice.

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◆ clear_device_screen_buffer()

void rtos_ST7735::clear_device_screen_buffer ( )

virtual

Clear the device screen buffer.

Implements rtos_DisplayDevice.

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◆ show()

void rtos_ST7735::show	(	Canvas *	canvas,
		const uint8_t	anchor_x,
		const uint8_t	anchor_y )

virtual

A pure virtual member function. It transfers the pixel buffer to the a part of display screen buffer starting at the (anchor_x, anchor_y) coordinates of the screen , expressed in pixel. This method takes into account the specific addressing scheme and memory structure of the actual display device.

Parameters

canvas	a pointer to the canvas that contains the buffer to be displayed
anchor_x	the x(horizontal) starting position of the frame within the display screen,(in pixel)
anchor_y	the y(vertical) starting position of the frame within the display screen,(in pixel)

Reimplemented from ST7735.

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◆ show_from_display_queue()

void rtos_ST7735::show_from_display_queue ( struct_WidgetDataToGateKeeper data_to_show )

Show data from the display queue.

Parameters

data_to_show The data to display.

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◆ show_widget()

void rtos_ST7735::show_widget ( rtos_Widget * widget )

virtual

Show the widget on the display device.

Parameters

widget the widget to show

Implements rtos_DisplayDevice.

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

st7735.h
st7735.cpp

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ rtos_ST7735()

Member Function Documentation

◆ check_rtos_display_device_compatibility()

◆ clear_device_screen_buffer()

◆ show()

◆ show_from_display_queue()

◆ show_widget()