public void ConnectTo(DigitalSignal digitalSignal)
{
if (digitalSignal == null)
{
throw new ArgumentNullException(nameof(digitalSignal));
}
if (_digitalSignal != null)
{
throw new InvalidOperationException("This DigitalSignalProvider is already connected.");
}
_digitalSignal = digitalSignal;
_digitalSignal.Attach(this);
// catch up with set level value
if (Level != DigitalLevel.Floating)
{
var newLevel = Level;
foreach (var level in new DigitalLevelCycler(
DigitalLevelCycler.NextLevel(_digitalSignal.Level), newLevel))
{
Level = level;
_digitalSignal.OnNewProviderValue(this);
}
}
}
public int Write(DigitalLevel newLevel)
{
if (!IsConnected)
{
Level = newLevel;
return(0);
}
if (newLevel == DigitalLevel.Floating)
{
Level = newLevel;
_digitalSignal.OnNewProviderValue(this);
return(1);
}
var count = 0;
foreach (var level in new DigitalLevelCycler(
DigitalLevelCycler.NextLevel(_digitalSignal.Level), newLevel))
{
Level = level;
_digitalSignal.OnNewProviderValue(this);
count++;
}
return(count);
}
private int SetNewLevel(DigitalLevel newLevel)
{
if (DigitalSignal.Level == newLevel)
{
return(0);
}
if (newLevel == DigitalLevel.Floating)
{
Level = newLevel;
_digitalSignal.OnNewProviderValue(this);
return(1);
}
var currentLevel = _digitalSignal.Level;
var nextLevel = DigitalLevelCycler.NextLevel(currentLevel);
if (nextLevel == newLevel ||
currentLevel == DigitalLevel.Floating)
{
Level = newLevel;
_digitalSignal.OnNewProviderValue(this);
return(1);
}
int count = 0;
foreach (var level in new DigitalLevelCycler(nextLevel, newLevel))
{
Level = level;
_digitalSignal.OnNewProviderValue(this);
count++;
}
return(count);
}
