Component: GLCD Free (ST7567) SPI (Graphical Monochrome)

Author	Matrix Ltd
Version	1.5
Category	Graphical Monochrome

GLCD Free (ST7567) SPI component

Graphical display component designed to work with the ST7567 type monochrome displays. Transfers data using a 4-wire SPI interface, cannot read back so pixel based routines won't work Not for public release.

Version information

Library Version, Component Version, Date, Author, Info
11, 1.0, 22-07-24, BR, Added DrawArc and DrawRoundedRectangle functions

Detailed description

No detailed description exists yet for this component

Examples

The MQTT component requires connection to a Network Comms component via the "Network Component" property, to provide the bridge for simulated TCP/IP communication.

The Network Comms component can then be linked to an embedded TCP/IP component to provide embedded TCP/IP support.

Here is a typical setup for using MQTT on a Raspberry Pi.

Local Weather

A simple example demonstrating how to use MQTT with Flowcode SCADA to get the local weather conditions.

The example shows temperatures from Halifax in the UK and from Sydney in Australia.

SCADA BBC TEMPERATURES

Publish

Raspberry Pi

Here we have an embedded Raspberry Pi project connected to an I2C Sensor, the sensor is sampled and the data is published to a MQTT server.

RPI3 MQTT IOT EBM016

ESP8266 Module

Here we have an embedded project using an ESP8266 wifi module, an analogue input is sampled and the data is published to a MQTT server.

MQTT IOT ESP8266

Subscribe

ESP8266 Module

Here we subscribe to a topic and receive it back into Flowcode embedded using an ESP8266 module.

Subscribe ESP8266 MQTT

Flowcode App Developer

Here we subscribe to a topic and receive it back into Flowcode App Developer.

Subscribe App Developer MQTT

Making your own Raspberry Pi based MQTT Broker

Click here for instructions on creating your own Raspberry Pi MQTT Broker.

Macro reference

BPlot

	BPlot
Sets a pixel with the current background colour at pixel location X, Y.
- BYTE	X
- BYTE	Y
- VOID	Return

ClearDisplay

	ClearDisplay
This macro clears the display of any previous output by overwriting the entire display with the background colour.
- VOID	Return

DrawArc

	DrawArc
Draws an arc either as an outline or as a filled object.
- UINT	X
Center X coordinate
- UINT	Y
Center Y coordinate
- UINT	Radius
Radius, distance of edge from the centre coordinates
- FLOAT	StartAngle
Angle to start drawing, in degrees
- FLOAT	EndAngle
Angle to end drawing, in degrees
- UINT	Resolution
Number of lines to draw from the center to the outer edge, 0=Fill
- BYTE	Transparent
Chooses the transparency - 0 = Arc contains background colour, 1 = Arc contains previous pixel data.
- BYTE	Solid
Chooses to fill with colour - 0 = Arc transparency data, 1 = Arc contains foreground colour.
- VOID	Return

DrawCircle

	DrawCircle
Draws a circle object on the display with the center of the circle at the location X,Y
- UINT	X
X Coordinate for the center of the circle
- UINT	Y
Y coordinate for the center of the circle
- UINT	Radius
Radius of the circle specified in pixels
- BYTE	Transparent
0=Fill inside circle using background colour / 1=Draw outer circle only
- BYTE	Solid
0=Use Transparent Setting / 1=Fill with foreground colour
- VOID	Return

DrawEllipse

	DrawEllipse
Draws an ellipse object on the display with the center of the ellipse at the location X,Y
- UINT	X
X Coordinate for the center of the circle
- UINT	Y
Y coordinate for the center of the circle
- UINT	XRadius
Radius of the circle on the X axis specified in pixels
- UINT	YRadius
Radius of the circle on the Y axis specified in pixels
- BYTE	Transparent
0=Fill inside circle using background colour / 1=Draw outer circle only
- BYTE	Solid
0=Use Transparent Setting / 1=Fill with foreground colour
- VOID	Return

DrawLine

	DrawLine
Draws a line with the current foreground colour from pixel location X1, Y1 to pixel location X2, Y2.
- UINT	X1
- UINT	Y1
- UINT	X2
- UINT	Y2
- VOID	Return

DrawRectangle

	DrawRectangle
Draws a rectangle with the current foreground colour from pixel loaction X1, Y1 to pixel location X2, Y2
- UINT	X1
- UINT	Y1
- UINT	X2
- UINT	Y2
- BYTE	Transparent
- BYTE	Solid
- VOID	Return

DrawRoundedRectangle

	DrawRoundedRectangle
Draws a rectangle with rounded corners
- UINT	X1
- UINT	Y1
- UINT	X2
- UINT	Y2
- UINT	Radius
- BYTE	Transparent
Chooses the transparency of the box - 0 = Box contains background colour, 1 = Box contains previous pixel data.
- BYTE	Solid
Chooses to fill the box with colour - 0 = Box contains transparency data, 1 = Box contains foreground colour.
- VOID	Return

Goto_XY

	Goto_XY
- BYTE	X
- BYTE	Y
- VOID	Return

Initialise

	Initialise
The Init macro must be called once to initialise the Graphical LCD display before any other Graphical LCD component macros are called.
- VOID	Return

Plot

	Plot
Sets a pixel with the current foreground colour at pixel location X, Y.
- BYTE	X
- BYTE	Y
- VOID	Return

Print

	Print
This macro prints a string of characters to the Graphical LCD.
- STRING	Str
String of characters to send to the display.
- UINT	X1
X pixel coordinate to set the output string position.
- UINT	Y1
Y pixel coordinate to set the output string position.
- BYTE	Font
Selects which Font to use Range: 0 to Font Count
- BYTE	Transparent
Specifies if the background of the text is drawn - 0 = Background colour is drawn, 1 = Background colour not drawn.
- VOID	Return

PrintNumber

	PrintNumber
This macro prints a decimal number to the Graphical LCD.
- INT	Number
Byte or Integer number to send to the display.
- UINT	X
X pixel coordinate to set the output string position.
- UINT	Line
Line 0-3
- BYTE	Font
Size of the font - 0 = Normal, 1 = Double Width, 2 = Double Width and Height, 3 = Double Height
- BYTE	Transparent
Specifies if the background of the text is drawn - 0 = Background colour is drawn, 1 = Background colour not drawn.
- VOID	Return

ReadFontStat

	ReadFontStat
Gets a stat from the selected embedded ASCII font data.
- BYTE	Font
Font selection range: 0 to (NumFonts - 1)
- BYTE	Index
0=SpaceWidth, 1=PixelHeight
- BYTE	Return

ReadFontWidth

	ReadFontWidth
Reads the number of pixel columns used in the selected font
- BYTE	Font
Font selection range: 0 to (NumFonts - 1)
- BYTE	Character
ASCII character to get the pixel width e.g. 'A' or 65
- BYTE	Return

SetBackgroundColour

	SetBackgroundColour
Specifies the colour of the foreground
- BYTE	PixelColour
0=White, 1=Black
- VOID	Return

SetDisplayOrientation

	SetDisplayOrientation
Controls the way data is printed out on the display allowing multiple different viewing orientations. Default is 0.
- BYTE	Orientation
0=Default, 1=90°CW, 2=180°CW, 3=270°CW
- VOID	Return

SetFontScaler

	SetFontScaler
Allows the fonts to be scaled up by multiplying the number of pixels on the X and Y.
- BYTE	ScaleX
Sets the horizontal scale of the font, default 1
- BYTE	ScaleY
Sets the vertical scale of the font, default 1
- VOID	Return

SetForegroundColour

	SetForegroundColour
Specifies the colour of the foreground.
- BYTE	PixelColour
0=White, 1=Black
- VOID	Return

Write_Command

	Write_Command
- BYTE	Command
- VOID	Return

Write_Data

	Write_Data
- BYTE	data
- VOID	Return

Property reference

	Properties
	Dimensions
	Pixel Width
Width of gLCD canvas measured in pixels.
	Pixel Height
Heigt of gLCD canvas measured in pixels.
	Colour
	Monochrome
Specifies if the display is capable of colour or monochrome only.
	Foreground Color
Specifies the initial foreground color.
	Background Color
Specifies the initial background color.
	Bit Depth
	Color Bit Depth
Number of bits of colour depth available on the display
	Red Bit Depth
Number of bits of Red colour depth on the display
	Green Bit Depth
Number of bits of Green colour depth on the display
	Blue Bit Depth
Number of bits of Blue colour depth on the display
	Connections
	Data Pin
	Clock Pin
	A0
Address pin to tell the display if we are sending commands or data
	CS
Chip select pin
	Reset
	Fonts
	Font Count
Specifies the number of fonts available to use on the display.
	Font 0
	Font
Font picker to decide which font to use on your display.
	Character Spacing
Sets the number of blank pixels between each character when printing text.
	Space Width
Sets the number of horizontal pixels used to represent a space character.
	Simulation Mode
	Display Type
Chooses which method to use when drawing to the gLCD component The bitmap is the more common mode but may run slowly on some machines. The point cloud should run faster but may use more memory.
	LCDVersion

Component Source Code

Please click here to download the component source project: FC_Comp_Source_glcd_ST7567_SPI_Free_FormulaAllCode.fcfx

Please click here to view the component source code (Beta): FC_Comp_Source_glcd_ST7567_SPI_Free_FormulaAllCode.fcfx