Class Pcd8544
Represents a Pcd8544 monochrome display
Assembly: Pcd8544.dll
View Source
public class Pcd8544 : IGraphicsDisplay, ISpiPeripheral, IDisposable
Implements:
Meadow.Foundation.Graphics.IGraphicsDisplay, Meadow.Hardware.ISpiPeripheral, System.IDisposable
Properties
ColorMode
Display color mode
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public ColorMode ColorMode { get; }
SupportedColorModes
The Color mode supported by the display
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public ColorMode SupportedColorModes { get; }
Height
Height of display in pixels
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public int Height { get; }
Width
Width of display in pixels
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public int Width { get; }
PixelBuffer
The buffer the holds the pixel data for the display
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public IPixelBuffer PixelBuffer { get; }
IsDisplayInverted
Is the display inverted
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public bool IsDisplayInverted { get; }
DefaultSpiBusSpeed
The default SPI bus speed for the device
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public Frequency DefaultSpiBusSpeed { get; }
SpiBusSpeed
The SPI bus speed for the device
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public Frequency SpiBusSpeed { get; set; }
DefaultSpiBusMode
The default SPI bus mode for the device
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public SpiClockConfiguration.Mode DefaultSpiBusMode { get; }
SpiBusMode
The SPI bus mode for the device
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public SpiClockConfiguration.Mode SpiBusMode { get; set; }
IsDisposed
Is the object disposed
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public bool IsDisposed { get; }
Fields
spiComms
SPI Communication bus used to communicate with the peripheral
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protected ISpiCommunications spiComms
imageBuffer
Buffer to hold display data
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protected Buffer1bpp imageBuffer
commandBuffer
Buffer to hold internal command data to be sent over the SPI bus
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protected Memory<byte> commandBuffer
Methods
Clear(bool)
Clear the display
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public void Clear(bool updateDisplay = false)
Parameters
| Type | Name | Description |
|---|---|---|
System.Boolean | updateDisplay | If true, it will force a display update |
DrawPixel(int, int, bool)
Draw pixel at location
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public void DrawPixel(int x, int y, bool enabled)
Parameters
| Type | Name | Description |
|---|---|---|
System.Int32 | x | x position in pixels |
System.Int32 | y | y position in pixels |
System.Boolean | enabled | True = turn on pixel, false = turn off pixel |
InvertPixel(int, int)
Invert pixel at a location
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public void InvertPixel(int x, int y)
Parameters
| Type | Name | Description |
|---|---|---|
System.Int32 | x | x position in pixels |
System.Int32 | y | y position in pixels |
DrawPixel(int, int, Color)
Draw pixel at location
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public void DrawPixel(int x, int y, Color color)
Parameters
| Type | Name | Description |
|---|---|---|
System.Int32 | x | x position in pixels |
System.Int32 | y | y position in pixels |
Meadow.Color | color | any value other than black will make the pixel visible |
Show()
Update the display
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public void Show()
Show(int, int, int, int)
Update a region of the display Currently always does a full screen update for this display
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public void Show(int left, int top, int right, int bottom)
Parameters
| Type | Name | Description |
|---|---|---|
System.Int32 | left | The left position in pixels |
System.Int32 | top | The top position in pixels |
System.Int32 | right | The right position in pixels |
System.Int32 | bottom | The bottom position in pixels |
InvertDisplay(bool)
Invert the entire display
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public void InvertDisplay(bool inverse)
Parameters
| Type | Name | Description |
|---|---|---|
System.Boolean | inverse | Invert if true, normal if false |
Fill(Color, bool)
Fill with color
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public void Fill(Color fillColor, bool updateDisplay = false)
Parameters
| Type | Name | Description |
|---|---|---|
Meadow.Color | fillColor | color - converted to on/off |
System.Boolean | updateDisplay | should refresh display |
Fill(int, int, int, int, Color)
Fill region with color
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public void Fill(int x, int y, int width, int height, Color fillColor)
Parameters
| Type | Name | Description |
|---|---|---|
System.Int32 | x | x position |
System.Int32 | y | y position |
System.Int32 | width | width of region |
System.Int32 | height | height of region |
Meadow.Color | fillColor | color - converted to on/off |
WriteBuffer(int, int, IPixelBuffer)
Draw buffer at location
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public void WriteBuffer(int x, int y, IPixelBuffer displayBuffer)
Parameters
| Type | Name | Description |
|---|---|---|
System.Int32 | x | x position in pixels |
System.Int32 | y | y position in pixels |
| Meadow.Foundation.Graphics.Buffers.IPixelBuffer | displayBuffer | buffer to draw |
Dispose()
Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
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public void Dispose()
Dispose(bool)
Dispose of the object
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protected virtual void Dispose(bool disposing)
Parameters
| Type | Name | Description |
|---|---|---|
System.Boolean | disposing | Is disposing |
Implements
- Meadow.Foundation.Graphics.IGraphicsDisplay
Meadow.Hardware.ISpiPeripheralSystem.IDisposable