/// <summary>
/// There are 4 braking force levels
/// These are communicated to the braking systems via pins 8-12 of GPIOC.
/// --> Pin 8 on means minimum braking force
/// --> Pin 12 on means maximum braking force
/// Pins 8-11 are used to report the position of the braking lever.
/// Pin 12 is used only for emergency braking.
/// Outputs must be configured as push-pull.
/// </summary>
private void WriteOutput(lever_position lever_Position)
{
switch (lever_Position)
{
case lever_position.minimum_acceleration:
this._variables.WritePinOutput(4);
break;
case lever_position.medium_acceleration:
this._variables.WritePinOutput(5);
break;
case lever_position.maximum_acceleration:
this._variables.WritePinOutput(6);
break;
case lever_position.no_acceleration:
this._variables.WritePinOutput(7);
break;
case lever_position.minimum_braking:
this._variables.WritePinOutput(8);
break;
case lever_position.medium_braking:
this._variables.WritePinOutput(9);
break;
case lever_position.strong_braking:
this._variables.WritePinOutput(10);
break;
}
}
private void ReadInput(string value)
{
if (value[0] == '1')
{
CurrentState = state.EMERGENCY;
CurrentLeverPosition = lever_position.strong_braking;
_is_emergency_ON = true;
}
if (value[1] == '1')
{
CurrentState = state.STOP;
CurrentLeverPosition = lever_position.medium_braking;
_is_stop_ON = true;
}
if (value[2] == '1')
{
CurrentState = state.NORMAL;
CurrentLeverPosition = lever_position.strong_braking;
}
if (value[3] == '1')
{
CurrentState = state.NORMAL;
CurrentLeverPosition = lever_position.medium_braking;
}
if (value[4] == '1')
{
CurrentState = state.NORMAL;
CurrentLeverPosition = lever_position.minimum_braking;
}
if (value[5] == '1')
{
CurrentState = state.NORMAL;
CurrentLeverPosition = lever_position.no_acceleration;
}
if (value[6] == '1')
{
CurrentState = state.NORMAL;
CurrentLeverPosition = lever_position.minimum_acceleration;
}
if (value[7] == '1')
{
CurrentState = state.NORMAL;
CurrentLeverPosition = lever_position.medium_acceleration;
}
//if (value[8] == '1')
//{
// CurrentState = state.NORMAL;
// CurrentLeverPosition = lever_position.maximum_acceleration;
//}
}
public void WriteInput(state state, lever_position lever_position)
{
switch (state)
{
case state.NORMAL:
WritePinInput((int)lever_position);
break;
case state.EMERGENCY:
WritePinInput(0);
break;
case state.STOP:
WritePinInput(1);
break;
}
}
// The thread procedure performs the task, such as formatting
// and printing a document.
public void Run()
{
try
{
Console.WriteLine("");
Console.WriteLine("TrainController started");
while (true)
{
ReadInput(this._variables.GPIO_B);
PrintGPIOValues();
if (_is_emergency_ON)
{
CurrentState = state.EMERGENCY;
CurrentLeverPosition = lever_position.strong_braking;
PrintMyStatus();
continue;
}
if (_is_stop_ON)
{
CurrentState = state.STOP;
CurrentLeverPosition = lever_position.medium_braking;
ManageStopSignal();
PrintMyStatus();
continue;
}
switch (CurrentState)
{
case state.EMERGENCY:
this._is_emergency_ON = true;
WriteOutput(lever_position.strong_braking);
break;
case state.STOP:
this._is_stop_ON = true;
WriteOutput(lever_position.medium_braking);
break;
case state.NORMAL:
WriteOutput(CurrentLeverPosition);
break;
}
PrintMyStatus();
tic++;
}
}
catch (Exception ex) {
Console.WriteLine("");
Console.WriteLine("TrainController Exception");
Console.WriteLine(ex.Message);
}
}
