public async Task initSenseHat()
{
// Create sensehat object
senseHat = await SenseHatFactory.Singleton.Create();
// Init font
tinyFont = new TinyFont();
// Init display
display = senseHat.Display;
// Get a copy of the rainbow colors.
senseHat.Display.Reset();
// Recreate the font from the serialized bytes.
BwFont font = BwFont.Deserialize(FontBytes);
// Get the characters to scroll.
IEnumerable<BwCharacter> characters = font.GetChars("Error");
// Create the character renderer.
BwCharacterRenderer characterRenderer = new BwCharacterRenderer(GetCharacterColor);
// Create the text scroller.
textScroller = new TextScroller<BwCharacter>(senseHat.Display, characterRenderer, characters);
// Update forecast for first time
getWeather(currentCity);
// Check joystick every 100 ms
joystickPollTimer = ThreadPoolTimer.CreatePeriodicTimer(pollJoystick, TimeSpan.FromMilliseconds(50));
// Check sensor every 2 s
updateSensorsTimer = ThreadPoolTimer.CreatePeriodicTimer(updateSensors, TimeSpan.FromSeconds(2));
// Get updated weather every 1 minute
forecastUpdateTimer = ThreadPoolTimer.CreatePeriodicTimer(updateForecast, TimeSpan.FromMinutes(1));
}
public override void Run()
{
// Get a copy of the rainbow colors.
SenseHat.Display.Reset();
SenseHat.Display.CopyScreenToColors(_rainbowColors);
// Recreate the font from the serialized bytes.
BwFont font = BwFont.Deserialize(FontBytes);
// Get the characters to scroll.
IEnumerable<BwCharacter> characters = font.GetChars(_scrollText);
// Create the character renderer.
BwCharacterRenderer characterRenderer = new BwCharacterRenderer(GetCharacterColor);
// Create the text scroller.
var textScroller = new TextScroller<BwCharacter>(
SenseHat.Display,
characterRenderer,
characters);
while (true)
{
// Step the scroller.
if (!textScroller.Step())
{
// Reset the scroller when reaching the end.
textScroller.Reset();
}
// Draw the background.
FillDisplay(textScroller.ScrollPixelOffset);
// Draw the scroll text.
textScroller.Render();
// Update the physical display.
SenseHat.Display.Update();
// Should the drawing mode change?
if (SenseHat.Joystick.Update() && (SenseHat.Joystick.EnterKey == KeyState.Pressing))
{
// The middle button is just pressed.
SwitchToNextScrollMode();
}
// Pause for a short while.
Sleep(TimeSpan.FromMilliseconds(50));
}
}
public void Write(ISenseHatDisplay display, string twoCharText, Color color, int offsetY = 0)
{
BwCharacter[] chars = Font.GetChars(twoCharText).ToArray();
if (chars.Length == 0)
{
return;
}
if (chars.Length > 2)
{
throw new ArgumentException("Max two characters are allowed!", nameof(twoCharText));
}
var characterRenderer = new BwCharacterRenderer(pixelMap => color);
int x = 0;
foreach (BwCharacter character in chars)
{
characterRenderer.Render(display, character, x, offsetY);
x += 4;
}
}