/// <summary>
/// Sets the direction of a particulare port.
/// </summary>
/// <param name="pin"></param>
/// <param name="direction"></param>
public void SetPortDirection(byte pin, PortDirectionType direction)
{
if (IsValidPin(pin))
{
// if it's already configured, get out. (1 = input, 0 = output)
if (direction == PortDirectionType.Input)
{
if (BitHelpers.GetBitValue(_iodir, pin))
{
return;
}
//if ((_iodir & (byte)(1 << pin)) != 0) return;
}
else
{
if (!BitHelpers.GetBitValue(_iodir, pin))
{
return;
}
//if ((_iodir & (byte)(1 << pin)) == 0) return;
}
// set the IODIR bit and write the setting
_iodir = BitHelpers.SetBit(_iodir, (byte)pin, (byte)direction);
_i2cPeripheral.WriteRegister(_IODirectionRegister, _iodir);
}
else
{
throw new Exception("Pin is out of range");
}
}
// TODO: all these can go away when we get interface implementation
// support from C# 8 into the Meadow.Core project. It won't work today,
// even though it's set to C# 8 because the project references the
// .NET 4.7.2 runtime. After the latest Mono rebase we'll be able to
// move it to Core 3.
public IBiDirectionalPort CreateBiDirectionalPort(IPin pin,
bool initialState = false,
InterruptMode interruptMode = InterruptMode.None,
ResistorMode resistorMode = ResistorMode.Disabled,
PortDirectionType initialDirection = PortDirectionType.Input,
double debounceDuration = 0.0, // 0 - 1000 msec in .1 increments
double glitchDuration = 0.0, // 0 - 1000 msec in .1 increments
OutputType outputType = OutputType.PushPull)
{
throw new NotImplementedException();
}
public IBiDirectionalPort CreateBiDirectionalPort(IPin pin, bool initialState = false, bool glitchFilter = false, InterruptMode interruptMode = InterruptMode.None, ResistorMode resistorMode = ResistorMode.Disabled, PortDirectionType initialDirection = PortDirectionType.Input)
{
throw new NotImplementedException();
}
protected DigitalPortBase(PortDirectionType direction)
{
_direction = direction;
}