BackgroundTaskDeferral _deferral; // for a headless Windows 10 for IoT projects you need to hold a deferral to keep the app active in the background
public void Run(IBackgroundTaskInstance taskInstance)
{
_deferral = taskInstance.GetDeferral(); // get the deferral handle
MAX7219 driver = new MAX7219(4, MAX7219.Rotate.None, MAX7219.Transform.HorizontalFlip, MAX7219.ChipSelect.CE0); // 4 panels, rotate 90 degrees, SPI CE0
LED8x8Matrix matrix = new LED8x8Matrix(driver); // pass the driver to the LED8x8Matrix Graphics Library
while (true)
{
matrix.ScrollStringInFromRight("Hello World 2015 ", 100);
}
}
public MeadowApp()
{
Console.WriteLine("Creating Outputs...");
ledPort = Device.CreateDigitalOutputPort(Device.Pins.OnboardLedGreen);
display = new MAX7219(
Device,
din: Device.Pins.D00,
cs: Device.Pins.D01,
clk: Device.Pins.D02,
displayCount: 1);
Console.WriteLine("Run...");
Run();
}
public void Run(IBackgroundTaskInstance taskInstance)
{
_deferral = taskInstance.GetDeferral(); // get the deferral handle
int count = 0;
MAX7219 driver = new MAX7219(2);
SevenSegmentDisplay ssd = new SevenSegmentDisplay(driver);
BMP180 bmp = new BMP180(BMP180.Mode.HIGHRES);
ssd.FrameClear();
ssd.FrameDraw();
ssd.SetBrightness(4);
while (true)
{
temperature = bmp.Temperature.DegreesCelsius;
data.Clear();
// is temperature less than 3 digits and there is a decimal part too then right pad to 5 places as decimal point does not take up a digit space on the display
if (temperature < 100 && temperature != (int)temperature)
{
data.Append($"{Math.Round(temperature, 1)}C".PadRight(5));
}
else
{
data.Append($"{Math.Round(temperature, 0)}C".PadRight(4));
}
data.Append(Math.Round(bmp.Pressure.Hectopascals, 0));
if (blink = !blink)
{
data.Append(".");
} // add a blinking dot on bottom right as an I'm alive indicator
ssd.DrawString(data.ToString());
ssd.DrawString(count++, 1);
ssd.FrameDraw();
Task.Delay(2000).Wait();
}
}
private async Task InitDisplay()
{
/* Initialize the display */
try
{
var driver = new MAX7219(2);
ssd = new SevenSegmentDisplay(driver);
ssd.FrameClear();
ssd.FrameDraw();
ssd.SetBrightness(10);
await SerialWriteAsync("Starting...");
}
catch (Exception ex)
{
throw new Exception("Display Initialization Failed", ex);
}
}
public async void Start()
{
var driver = new MAX7219(4, MAX7219.Rotate.None, MAX7219.Transform.HorizontalFlip, MAX7219.ChipSelect.CE1);
LED8x8Matrix matrix = new LED8x8Matrix(driver);
matrix.SetBrightness(2);
while (true)
{
matrix.FrameClear();
matrix.ScrollStringInFromRight("Hello World 2015", 100);
matrix.FrameClear();
matrix.ScrollStringInFromLeft("Hello World 2015", 100);
//continue;
for (ushort p = 0; p < matrix.PanelsPerFrame; p++)
{
matrix.DrawSymbol(Grid8x8.Symbols.Block, Led.On, p);
matrix.FrameDraw();
await Task.Delay(100);
}
for (int p = 0; p < matrix.Length; p++)
{
matrix.FrameSet(Led.On, p);
matrix.FrameSet(Led.On, matrix.Length - 1 - p);
matrix.FrameDraw();
await Task.Delay(2);
matrix.FrameSet(Led.Off, p);
matrix.FrameSet(Led.Off, matrix.Length - 1 - p);
matrix.FrameDraw();
await Task.Delay(2);
}
for (int c = 0; c < matrix.ColumnsPerFrame; c = c + 2)
{
matrix.ColumnDrawLine(c);
matrix.FrameDraw();
await Task.Delay(100);
}
for (int r = 0; r < matrix.RowsPerPanel; r = r + 2)
{
matrix.RowDrawLine(r);
matrix.FrameDraw();
await Task.Delay(100);
}
await Task.Delay(1000);
for (ushort i = 0; i < matrix.PanelsPerFrame; i++)
{
matrix.DrawLetter(i.ToString()[0], Led.On, i);
}
matrix.FrameDraw();
await Task.Delay(1000);
for (int r = 0; r < matrix.RowsPerPanel * 2; r++)
{
matrix.FrameRollDown();
matrix.FrameDraw();
await Task.Delay(100);
}
for (int r = 0; r < matrix.RowsPerPanel * 2; r++)
{
matrix.FrameRollUp();
matrix.FrameDraw();
await Task.Delay(100);
}
for (int c = 0; c < matrix.ColumnsPerFrame * 1; c++)
{
matrix.FrameRollRight();
matrix.FrameDraw();
await Task.Delay(100);
}
for (int c = 0; c < matrix.ColumnsPerFrame * 1; c++)
{
matrix.FrameRollLeft();
matrix.FrameDraw();
await Task.Delay(100);
}
//await Task.Delay(1000);
//continue;
matrix.DrawString("ABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890", 100, 0);
matrix.FrameClear();
for (int i = 0; i < matrix.RowsPerPanel; i++)
{
matrix.DrawBox(i, i, matrix.ColumnsPerFrame - (i * 2), matrix.RowsPerPanel - (i * 2), Led.On);
matrix.FrameDraw();
await Task.Delay(100);
}
for (byte l = 0; l < 2; l++)
{
matrix.SetFrameState(LedDriver.Display.Off);
await Task.Delay(250);
matrix.SetFrameState(LedDriver.Display.On);
await Task.Delay(250);
}
matrix.FrameClear();
for (int r = 0; r < 2; r++)
{
for (int i = 0; i < matrix.RowsPerPanel; i++)
{
matrix.RowDrawLine(i, i - 0, matrix.ColumnsPerFrame - i - 1);
matrix.FrameDraw();
await Task.Delay(50);
}
//for (byte l = 0; l < 6; l++) {
// matrix.SetBrightness(l);
// await Task.Delay(250);
//}
//matrix.SetBrightness(1);
for (int i = 0; i < matrix.RowsPerPanel; i++)
{
matrix.RowDrawLine(i, i - 0, matrix.ColumnsPerFrame - i - 1, Led.Off);
matrix.FrameDraw();
await Task.Delay(50);
}
}
await Task.Delay(500);
matrix.FrameClear();
matrix.ScrollStringInFromRight("Hello World ", 100);
matrix.FrameClear();
matrix.ScrollStringInFromLeft("Happy Birthday ", 100);
for (int i = 0; i < matrix.fontSimple.Length; i = i + matrix.PanelsPerFrame)
{
for (int p = 0; p < matrix.PanelsPerFrame; p++)
{
if (p + i >= matrix.fontSimple.Length)
{
break;
}
matrix.DrawBitmap(matrix.fontSimple[p + i], Led.On, (p + i) % matrix.PanelsPerFrame);
}
matrix.FrameDraw();
await Task.Delay(100 *matrix.PanelsPerFrame);
}
foreach (Grid8x8.Symbols sym in Enum.GetValues(typeof(Grid8x8.Symbols)))
{
for (int p = 0; p < matrix.PanelsPerFrame; p++)
{
matrix.DrawSymbol(sym, Led.On, p);
}
matrix.FrameDraw();
await Task.Delay(100 *matrix.PanelsPerFrame);
}
}
}
