Meadow.Foundation.Displays.St7735
St7735 | |
---|---|
Status | |
Source code | GitHub |
Datasheet(s) | GitHub |
NuGet package |
The ST7735 is a display controller used to drive color displays over SPI using 12, 16 or 18 bbp. These displays require a backlight. These displays are commonly found with a resolution of 128x160.
The Meadow.Foundation ST7735 driver currently only supports 16bpp RGB565.
Code Example
MicroGraphics graphics;
public override Task Initialize()
{
Resolver.Log.Info("Initializing ...");
var spiBus = Device.CreateSpiBus();
//note - you may need to adjust the DisplayType for your specific St7735
var display = new St7735(
spiBus: spiBus,
chipSelectPin: Device.Pins.D02,
dcPin: Device.Pins.D01,
resetPin: Device.Pins.D00,
width: 128,
height: 160,
St7735.DisplayType.ST7735R);
graphics = new MicroGraphics(display);
return base.Initialize();
}
public override Task Run()
{
graphics.Clear();
graphics.DrawCircle(60, 60, 20, Color.Purple);
graphics.DrawRectangle(10, 10, 30, 60, Color.Red);
graphics.DrawTriangle(20, 20, 10, 70, 60, 60, Color.Green);
graphics.DrawCircle(90, 60, 20, Color.Cyan, true);
graphics.DrawRectangle(100, 100, 30, 10, Color.Yellow, true);
graphics.DrawTriangle(120, 20, 110, 70, 160, 60, Color.Pink, true);
graphics.DrawLine(10, 120, 110, 130, Color.SlateGray);
graphics.Show();
return base.Run();
}
Sample project(s) available on GitHub
Wiring Example
To wire a ST7735 to your Meadow board, connect the following:
ST7735 | Meadow Pin |
---|---|
LED- | 3V3 |
LED+ | GND |
MOSI | MOSI |
SCK | SCK |
RESET | D15 |
A0 | D14 |
CS | D13 |
VCC | 3V3 |
GND | GND |
It should look like the following diagram:
Class St7735
Represents a St7735 TFT color display
Assembly: TftSpi.dll
View Source
public class St7735 : TftSpiBase, IPixelDisplay, IDisplay, ISpiPeripheral, IDisposable
Inheritance: System.Object
-> Meadow.Foundation.Displays.TftSpiBase
Implements:
Meadow.Peripherals.Displays.IPixelDisplay
, Meadow.Peripherals.Displays.IDisplay
, Meadow.Hardware.ISpiPeripheral
, System.IDisposable
Properties
DefaultColorMode
The default display color mode
View Source
public override ColorMode DefaultColorMode { get; }
SupportedColorModes
The color modes supported by the display
View Source
public override ColorMode SupportedColorModes { get; }
Methods
Initialize()
Initialize the display
View Source
protected override void Initialize()
SetAddressWindow(int, int, int, int)
Set address window for display updates
View Source
protected override void SetAddressWindow(int x0, int y0, int x1, int y1)
Parameters
Type | Name | Description |
---|---|---|
System.Int32 | x0 | X start in pixels |
System.Int32 | y0 | Y start in pixels |
System.Int32 | x1 | X end in pixels |
System.Int32 | y1 | Y end in pixels |
Implements
Meadow.Peripherals.Displays.IPixelDisplay
Meadow.Peripherals.Displays.IDisplay
Meadow.Hardware.ISpiPeripheral
System.IDisposable