/// <summary>
/// Periodically check switching progress.
/// </summary>
/// <exception cref="ApplicationException">Wrong TemperatureControlMode.</exception>
/// <param name="sender"></param>
/// <param name="e"></param>
private void TimerSwitch_Tick(object sender, EventArgs e)
{
switch (temperatureControlMode)
{
case TemperatureControlMode.None:
throw new ApplicationException("Wrong mode.");
case TemperatureControlMode.ET2PC_switch:
if (!ADC.Switched2Eurotherm())
{
timerSwitch.Stop();
temperatureControlMode = TemperatureControlMode.None;
Front.SwitchButtonTextIndex = 0;
LED(LEDcolour.Off);
}
break;
case TemperatureControlMode.PC2ET_equal:
// If switched before the voltages are equalized.
if (ADC.Switched2Eurotherm())
{
timerSwitch.Stop();
temperatureControlMode = TemperatureControlMode.None;
Front.SwitchButtonTextIndex = 0;
LED(LEDcolour.Off);
break;
}
// If difference is lesser than error.
Front.My_msg("XX AR" + ADC.ReadEurothermV() + " AL" + DAC.LastWrittenValue);
if (Math.Abs(ADC.ReadEurothermV() - DAC.LastWrittenValue) < 0.05)
{
temperatureControlMode = TemperatureControlMode.PC2ET_switch;
Front.My_msg("You can switch to Eurotherm.");
LED(LEDcolour.Green);
}
break;
case TemperatureControlMode.PC2ET_switch:
// If difference is greater again than error.
if (Math.Abs(ADC.ReadEurothermV() - DAC.LastWrittenValue) >= 0.05)
{
temperatureControlMode = TemperatureControlMode.PC2ET_equal;
LED(LEDcolour.Red);
}
if (ADC.Switched2Eurotherm())
{
timerSwitch.Stop();
temperatureControlMode = TemperatureControlMode.None;
Front.SwitchButtonTextIndex = 0;
LED(LEDcolour.Off);
}
break;
default:
break;
}
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public bool Switch(out double outputVoltage)
{
outputVoltage = double.NaN;
if (temperatureControlMode == TemperatureControlMode.None)
{
if (!double.IsNaN(outputVoltage))
{
// Switched to eurotherm, so switching to this app.
if (ADC.Switched2Eurotherm())
{
outputVoltage = ADC.ReadEurothermV();
// Round to 12b - this should be given by DAC.
outputVoltage = Math.Round(outputVoltage / 10 * 4096) / 409.6; // ??
DAC.SetV(outputVoltage, 2);
Front.My_msg("You can switch to PC.");
LED(LEDcolour.Green);
}
// Switched to this app, so switching to eurotherm.
else
{
double percent = DAC.LastWrittenValue / 5 * 100; // Percentage out of 5 V.
var a = DAC.GetV();
Front.My_msg("XX P" + percent + " DL" + DAC.LastWrittenValue + " a0" + a[0] + " a1" + a[1]); // Analyze. DELETE!!!
Front.My_msg(string.Format("Set Eurotherm to Manual / {0:F1} %.", percent));
LED(LEDcolour.Red);
}
timerSwitch.Start();
temperatureControlMode = TemperatureControlMode.ET2PC_switch;
}
else
{
temperatureControlMode = TemperatureControlMode.PC2ET_equal;
}
}
// Sth is already happening => abort.
else
{
timerSwitch.Stop();
LED(LEDcolour.Off);
temperatureControlMode = TemperatureControlMode.None;
}
return(temperatureControlMode == TemperatureControlMode.None);
}
