Class As1115
Represents an As1115 led driver and key scanner
Assembly: As1115.dll
View Source
public class As1115 : IGraphicsDisplay, II2cPeripheral, IDisposable
Implements:
Meadow.Foundation.Graphics.IGraphicsDisplay, Meadow.Hardware.II2cPeripheral, System.IDisposable
Properties
KeyScanButtons
Readonly collection that contains all 16 key scan button objects
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public ReadOnlyDictionary<As1115.KeyScanButtonType, KeyScanButton>? KeyScanButtons { get; protected set; }
DefaultI2cAddress
The default I2C address for the peripheral
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public byte DefaultI2cAddress { get; }
ColorMode
The display color mode (1 bit per pixel)
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public ColorMode ColorMode { get; }
SupportedColorModes
The Color mode supported by the display
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public ColorMode SupportedColorModes { get; }
Width
Display width in pixels for 8x8 matrix displays
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public int Width { get; }
Height
Display height in pixels for 8x8 matrix displays
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public int Height { get; }
PixelBuffer
The buffer that holds the pixel data for 8x8 matrix displays
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public IPixelBuffer PixelBuffer { get; }
DecodeMode
The display decode mode BCD character / Hex character / Pixel
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public As1115.DecodeType DecodeMode { get; }
IsDisposed
Is the peripheral disposed
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public bool IsDisposed { get; }
Fields
i2cComms
I2C Communication bus used to communicate with the peripheral
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protected readonly II2cCommunications i2cComms
Methods
GetButton(KeyScanButtonType)
Helper method to get IButton object references for keyscan buttons
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public IButton GetButton(As1115.KeyScanButtonType buttonType)
Returns
Meadow.Peripherals.Sensors.Buttons.IButton: The button object reference
Parameters
| Type | Name | Description |
|---|---|---|
| Meadow.Foundation.ICs.IOExpanders.As1115.KeyScanButtonType | buttonType | The button type |
EnableBlink(bool, bool)
Enable or disable display blinking
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public void EnableBlink(bool isEnabled, bool fastBlink = true)
Parameters
| Type | Name | Description |
|---|---|---|
System.Boolean | isEnabled | Display will blink if true |
System.Boolean | fastBlink | True for fast blink (period of 1s), False for slow blink (period of 2s) |
SetNumber(int)
Set number to display (left aligned)
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public void SetNumber(int value)
Parameters
| Type | Name | Description |
|---|---|---|
System.Int32 | value | the number to display |
Exceptions
System.ArgumentOutOfRangeException
SetCharacter(BcdCharacterType, int, bool)
Set a single character
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public void SetCharacter(As1115.BcdCharacterType character, int digit, bool showDecimal = false)
Parameters
| Type | Name | Description |
|---|---|---|
| Meadow.Foundation.ICs.IOExpanders.As1115.BcdCharacterType | character | the character to display |
System.Int32 | digit | the digit index starting from the left |
System.Boolean | showDecimal | show the decimal with the character |
SetCharacter(HexCharacterType, int, bool)
Set a single character
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public void SetCharacter(As1115.HexCharacterType character, int digit, bool showDecimal = false)
Parameters
| Type | Name | Description |
|---|---|---|
| Meadow.Foundation.ICs.IOExpanders.As1115.HexCharacterType | character | the character to display |
System.Int32 | digit | the digit index starting from the left |
System.Boolean | showDecimal | show the decimal with the character |
SetIntensity(byte)
Set display intensity (0-15)
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public void SetIntensity(byte intensity)
Parameters
| Type | Name | Description |
|---|---|---|
System.Byte | intensity | Intensity from 0-15 (clamps above 15) |
TestMode(bool)
Enable/disable test mode
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public void TestMode(bool testOn)
Parameters
| Type | Name | Description |
|---|---|---|
System.Boolean | testOn | True to enable, false to disable |
Show()
Update the display
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public void Show()
Show(int, int, int, int)
Update the display from the display buffer
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public void Show(int left, int top, int right, int bottom)
Parameters
| Type | Name |
|---|---|
System.Int32 | left |
System.Int32 | top |
System.Int32 | right |
System.Int32 | bottom |
Clear(bool)
Clear the display buffer
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public void Clear(bool updateDisplay = false)
Parameters
| Type | Name | Description |
|---|---|---|
System.Boolean | updateDisplay | If true, update the display |
Fill(Color, bool)
Fill the display buffer with a color Black will clear the display, any other color will turn on all leds
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public void Fill(Color fillColor, bool updateDisplay = false)
Parameters
| Type | Name | Description |
|---|---|---|
Meadow.Color | fillColor | The color to fill |
System.Boolean | updateDisplay | Update the display |
Fill(int, int, int, int, Color)
Fill a region of the display buffer with a color Black will clear the display, any other color will turn on all leds
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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 in pixels |
System.Int32 | y | Y position in pixels |
System.Int32 | width | Width in pixels |
System.Int32 | height | Height in pixels |
Meadow.Color | fillColor | Color to fill - Black will turn pixels off, any color will turn pixels on |
DrawPixel(int, int, Color)
Draw a pixel at a given 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 | Color to draw - Black will turn pixels off, any color will turn pixels on |
DrawPixel(int, int, bool)
Draw a pixel at a given 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 | If true, turn led on at location |
InvertPixel(int, int)
Invert pixel at location (switch on/off)
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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 |
WriteBuffer(int, int, IPixelBuffer)
Write a pixel buffer to the display buffer
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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 | Display buffer to write |
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 |
Dispose()
Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
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public void Dispose()
Events
KeyScanPressStarted
Event raised when any key scan button is pressed
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public event EventHandler<KeyScanEventArgs> KeyScanPressStarted
Event Type
System.EventHandler<Meadow.Foundation.ICs.IOExpanders.KeyScanEventArgs>
KeyScanPressEnded
Event raised when any key scan button is released
View Source
public event EventHandler<KeyScanEventArgs> KeyScanPressEnded
Event Type
System.EventHandler<Meadow.Foundation.ICs.IOExpanders.KeyScanEventArgs>
Implements
- Meadow.Foundation.Graphics.IGraphicsDisplay
Meadow.Hardware.II2cPeripheralSystem.IDisposable