/// <summary>
/// Initializes this instance.
/// </summary>
/// <param name="parent">Controller to which display id conected</param>
/// <param name="enableCursor">If <value>true</value> sets ON Cursor and Blink.</param>
internal Lcd(Controller parent, bool enableCursor = true)
{
parent_ = parent;
Thread.Sleep(Delay.Setup0Ns);
Libmcp23s17.mcp23s17_write_reg(0x3, parent_.lcdPort_, parent_.hardwareAddr_, parent_.mcp23s17Fd_);
PulseEnable();
Thread.Sleep(Delay.Setup1Ns);
Libmcp23s17.mcp23s17_write_reg(0x3, parent_.lcdPort_, parent_.hardwareAddr_, parent_.mcp23s17Fd_);
PulseEnable();
Thread.Sleep(Delay.Setup2Ns);
Libmcp23s17.mcp23s17_write_reg(0x3, parent_.lcdPort_, parent_.hardwareAddr_, parent_.mcp23s17Fd_);
PulseEnable();
Libmcp23s17.mcp23s17_write_reg(0x2, parent_.lcdPort_, parent_.hardwareAddr_, parent_.mcp23s17Fd_);
PulseEnable();
currentFunctionSet_ |= Flag.FoutBitMode | Flag.TwoLine | Flag.FiveXEightDots;
SendCommand(Command.FunctionSet | currentFunctionSet_);
Display = false;
Cursor = false;
Blink = false;
Clear();
EntryMode = Mode.LeftToRight;
Autoscroll = false;
Display = true;
Backlight = true;
if (enableCursor)
{
Cursor = true;
Blink = true;
}
}
/// <summary>
/// Opens the display to messages.
/// </summary>
/// <param name="interval">Interval for checking if buttons state changed</param>
/// <param name="enableCursor">If <value>true</value> sets ON Cursor and Blink on Screen.</param>
public Controller(double interval = 100, bool enableCursor = true)
{
// All PiFace Digital are connected to the same SPI bus, only need 1 fd.
if ((mcp23s17Fd_ = Libmcp23s17.mcp23s17_open(bus_, chipSelect_)) < 0)
{
throw new OpenException("Cannot open connection to PiFace Digital");
}
//Set IO config
uint ioconfig = Libmcp23s17.Data.BankOff |
Libmcp23s17.Data.IntMirrorOff |
Libmcp23s17.Data.SeqopOff |
Libmcp23s17.Data.DisslwOff |
Libmcp23s17.Data.HaenOn |
Libmcp23s17.Data.OdrOff |
Libmcp23s17.Data.IntpolLow;
Libmcp23s17.mcp23s17_write_reg(ioconfig, Libmcp23s17.Data.IoCon, hardwareAddr_, mcp23s17Fd_);
// Set GPIO Port A as inputs (switches)
Libmcp23s17.mcp23s17_write_reg(0xff, Libmcp23s17.Data.IoDirA, hardwareAddr_, mcp23s17Fd_);
Libmcp23s17.mcp23s17_write_reg(0xff, Libmcp23s17.Data.GpPuA, hardwareAddr_, mcp23s17Fd_);
// Set GPIO Port B as outputs (connected to HD44780)
Libmcp23s17.mcp23s17_write_reg(0x00, Libmcp23s17.Data.IoDirB, hardwareAddr_, mcp23s17Fd_);
// enable interrupts
Libmcp23s17.mcp23s17_write_reg(0xFF, Libmcp23s17.Data.GpIntEnA, hardwareAddr_, mcp23s17Fd_);
Screen = new Lcd(this, enableCursor);
HoldMinTime = 2000;
timer_ = new Timer(interval);
ButtonsArray = new Button[4];
for (int i = 0; i < 4; ++i)
{
ButtonsArray[i] = new Button(this, i);
timer_.Elapsed += ButtonsArray[i].TimerOnElapsed;
}
SingleButton = new Button(this, 4);
timer_.Elapsed += SingleButton.TimerOnElapsed;
Switch = new Switch(this, 5, 6, 7);
timer_.Elapsed += Switch.TimerOnElapsed;
timer_.Start();
}
