/// <summary>
/// This demonstrates the use of a large font on a 20x4 display. This is useful especially when showing values that should be readable from farther away,
/// such as the time, or a temperature.
/// </summary>
/// <param name="lcd">The display</param>
public static void LargeValueDemo(Hd44780 lcd)
{
LcdValueUnitDisplay value = new LcdValueUnitDisplay(lcd, CultureInfo.CurrentCulture);
value.InitForRom("A00");
value.Clear();
Console.WriteLine("Big clock test");
while (!Console.KeyAvailable)
{
value.DisplayTime(DateTime.Now, "T");
Thread.Sleep(200);
}
Console.ReadKey(true);
Console.WriteLine("Showing fake temperature");
value.DisplayValue("24.2 °C", "Temperature");
Console.ReadKey(true);
Console.WriteLine("Now showing a text");
CancellationTokenSource src = new CancellationTokenSource();
value.DisplayBigTextAsync("The quick brown fox jumps over the lazy dog at 10.45PM on May, 3rd", TimeSpan.FromSeconds(0.5), src.Token);
Console.ReadKey(true);
src.Cancel();
}
public void UseWithoutInitializationThrows()
{
_displayMock.Setup(x => x.Size).Returns(new Size(20, 4));
_displayMock.Setup(x => x.NumberOfCustomCharactersSupported).Returns(8);
LcdValueUnitDisplay display = new LcdValueUnitDisplay(_displayMock.Object, CultureInfo.InvariantCulture);
DateTime time = new DateTime(2020, 5, 3, 21, 35, 10);
Assert.Throws <InvalidOperationException>(() => display.DisplayTime(time));
}
public void LargeValueDisplayInitializes()
{
int numChars = 0;
_displayMock.Setup(x => x.Size).Returns(new Size(20, 4));
_displayMock.Setup(x => x.NumberOfCustomCharactersSupported).Returns(8);
_displayMock.Setup(x => x.CreateCustomCharacter(It.IsAny <int>(), It.Is <byte[]>(y => y.Length == 8))).Callback(() => numChars++);
_displayMock.SetupSet(x => x.BlinkingCursorVisible = false);
_displayMock.SetupSet(x => x.UnderlineCursorVisible = false);
_displayMock.SetupSet(x => x.BacklightOn = true);
_displayMock.SetupSet(x => x.DisplayOn = true);
_displayMock.Setup(x => x.Clear());
LcdValueUnitDisplay display = new LcdValueUnitDisplay(_displayMock.Object, CultureInfo.InvariantCulture);
// This would throw in case the character map was not available
display.InitForRom("A00");
Assert.Equal(7, numChars);
}
public void UseDisplay()
{
// this are the raw byte values that are sent to the display. Since we're really using byte positions 0-7, this looks a bit weird
const string firstLine = "\0\u0006\u0002 \0\u0006 \0\u0006\u0002\u0006\u0006\u0006 ";
const string secondLine = " \0\u0003\0\u0003\u0006\u0007 \0\u0003\u0006 ";
const string thirdLine = "\0\u0003 \u0006\u0007 \u0001\u0002\u0005\u0005\u0002 ";
const string fourthLine = "\u0006\u0006\u0003 \u0006 \u0001\u0006\u0003\u0001\u0006\u0003 ";
// Enable this expectation to be able to see how things get printed (if the above needs updating)
// const string testLine = "0:\0 1:\u0001 2:\u0002 3:\u0003 4:\u0004 5:\u0005 6:\u0006 7:\u0007 8:\u0008";
// _displayMock.Setup(x => x.Write(testLine));
Assert.Equal(20, firstLine.Length);
Assert.Equal(20, secondLine.Length);
Assert.Equal(20, thirdLine.Length);
Assert.Equal(20, fourthLine.Length);
_displayMock.Setup(x => x.Size).Returns(new Size(20, 4));
_displayMock.Setup(x => x.NumberOfCustomCharactersSupported).Returns(8);
_displayMock.Setup(x => x.CreateCustomCharacter(It.IsAny <int>(), It.Is <byte[]>(y => y.Length == 8)));
_displayMock.SetupSet(x => x.BlinkingCursorVisible = false);
_displayMock.SetupSet(x => x.UnderlineCursorVisible = false);
_displayMock.SetupSet(x => x.BacklightOn = true);
_displayMock.SetupSet(x => x.DisplayOn = true);
_displayMock.Setup(x => x.Clear());
LcdValueUnitDisplay display = new LcdValueUnitDisplay(_displayMock.Object, CultureInfo.InvariantCulture);
display.InitForRom("A00");
_displayMock.Setup(x => x.SetCursorPosition(0, 0));
_displayMock.Setup(x => x.Write(firstLine));
_displayMock.Setup(x => x.SetCursorPosition(0, 1));
_displayMock.Setup(x => x.Write(secondLine));
_displayMock.Setup(x => x.SetCursorPosition(0, 2));
_displayMock.Setup(x => x.Write(thirdLine));
_displayMock.Setup(x => x.SetCursorPosition(0, 3));
_displayMock.Setup(x => x.Write(fourthLine));
DateTime time = new DateTime(2020, 5, 3, 21, 35, 10);
display.DisplayTime(time);
}