/// <summary>
/// Construct a new HD44780-compatible display
/// </summary>
/// <param name="iface">The writable parallel interface to use</param>
/// <param name="Columns">The number of columns in the display</param>
/// <param name="Rows">The number of rows of the display</param>
/// <param name="Backlight">The active-high pin to use for the backlight</param>
/// <param name="font">The font mode to use</param>
public Hd44780(WriteOnlyParallelInterface iface, int Columns, int Rows, DigitalOut Backlight = null,
FontMode font = FontMode.Font_5x8) : base(Columns, Rows)
{
if (iface.Width == 8)
{
bits = BitMode.EightBit;
}
else if (iface.Width == 4)
{
bits = BitMode.FourBit;
}
else
{
throw new ArgumentException("The IParallelInterface bus must be either 4 or 8 bits wide.", "iface");
}
if (Rows == 1)
{
lines = LinesMode.OneLine;
}
else
{
lines = LinesMode.TwoOrMoreLines;
}
this.font = font;
this.iface = iface;
iface.DelayMicroseconds = 50;
iface.Enabled = true;
byte cmd;
if (bits == BitMode.FourBit)
{
Task.Run(() => iface.WriteCommandAsync(new uint[] { 0x03 })).Wait();
Task.Run(() => Task.Delay(10)).Wait();
Task.Run(() => iface.WriteCommandAsync(new uint[] { 0x03 })).Wait();
Task.Run(() => Task.Delay(10)).Wait();
Task.Run(() => iface.WriteCommandAsync(new uint[] { 0x03 })).Wait();
Task.Run(() => Task.Delay(10)).Wait();
Task.Run(() => iface.WriteCommandAsync(new uint[] { 0x02 })).Wait();
}
cmd = (byte)((byte)Command.FunctionSet | (byte)bits | (byte)lines | (byte)font);
Task.Run(() => writeCommand(cmd)).Wait();
Display = true;
Task.Run(Clear).Wait();
if (Backlight != null)
{
backlight = Backlight;
Task.Run(backlight.MakeDigitalPushPullOutAsync).Wait();
}
this.Backlight = true;
}
/// <summary>
/// Construct a new HD44780-compatible display
/// </summary>
/// <param name="iface">The writable parallel interface to use</param>
/// <param name="Columns">The number of columns in the display</param>
/// <param name="Rows">The number of rows of the display</param>
/// <param name="Backlight">The active-high pin to use for the backlight</param>
/// <param name="font">The font mode to use</param>
public Hd44780(WriteOnlyParallelInterface iface, int Columns, int Rows, DigitalOutPin Backlight = null, FontMode font = FontMode.Font_5x8) : base(Columns, Rows)
{
if (iface.Width == 8)
this.bits = BitMode.EightBit;
else if (iface.Width == 4)
this.bits = BitMode.FourBit;
else
throw new ArgumentException("The IParallelInterface bus must be either 4 or 8 bits wide.", "iface");
if (Rows == 1)
this.lines = LinesMode.OneLine;
else
this.lines = LinesMode.TwoOrMoreLines;
this.font = font;
this.iface = iface;
iface.DelayMicroseconds = 50;
iface.Enabled = true;
byte cmd;
if (bits == BitMode.FourBit)
{
iface.WriteCommand(new uint[] { 0x03 }).Wait();
Task.Delay(10).Wait();
iface.WriteCommand(new uint[] { 0x03 }).Wait();
Task.Delay(10).Wait();
iface.WriteCommand(new uint[] { 0x03 }).Wait();
Task.Delay(10).Wait();
iface.WriteCommand(new uint[] { 0x02 }).Wait();
}
cmd = (byte)((byte)Command.FunctionSet | (byte)bits | (byte)lines | (byte)font);
writeCommand(cmd).Wait();
Display = true;
Clear().Wait();
if (Backlight != null)
{
this.backlight = Backlight;
backlight.MakeDigitalPushPullOut();
}
this.Backlight = true;
}
