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/*
* Trigger.cpp
*
* Created on: 6 Jun 2019
* Author: David
*/
#include "Trigger.h"
#include "RepRap.h"
#include "PrintMonitor.h"
Trigger::Trigger() noexcept
{
condition = 0;
}
// Initialise the trigger
void Trigger::Init() noexcept
{
for (IoPort& port : ports)
{
port.Release();
}
condition = 0;
}
// Return true if this trigger is unused, i.e. it doesn't watch any pins
bool Trigger::IsUnused() const noexcept
{
for (const IoPort& port : ports)
{
if (port.IsValid())
{
return false;
}
}
return true;
}
// Check whether this trigger is active and update the input states
bool Trigger::Check() noexcept
{
bool triggered = false;
for (unsigned int i = 0; i < ARRAY_SIZE(ports); ++i)
{
if (!ports[i].IsValid()) // reached the end of the used ports
{
break;
}
const bool b = ports[i].Read();
if (b != inputStates.IsBitSet(i)) // if the input level has changed
{
if (b)
{
inputStates.SetBit(i);
triggered = true;
}
else
{
inputStates.ClearBit(i);
}
}
}
return triggered && (condition == 0 || (condition == 1 && reprap.GetPrintMonitor().IsPrinting()));
}
// End
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