private void UpdateInterrupts()
{
for (var i = 0; i < State.Length; ++i)
{
var externalPin = targetExternalPins[i];
if (!interruptEnable[externalPin])
{
continue;
}
var isEdge = State[i] != previousState[externalPin];
previousState[externalPin] = State[i];
if (isEdge && State[i] == (interruptTriggers[externalPin] == InterruptTrigger.RisingEdge))
{
externalInterrupt[externalPin] = true;
}
//no clear as it must be set manually with InterruptFlagClear
}
var even = false;
var odd = false;
for (var i = 0; i < interruptEnable.Length; i += 2)
{
even |= externalInterrupt[i];
}
for (var i = 1; i < interruptEnable.Length; i += 2)
{
odd |= externalInterrupt[i];
}
EvenIRQ.Set(even);
OddIRQ.Set(odd);
}
private void InnerReset()
{
registers.Reset();
configurationLocked = false;
EvenIRQ.Unset();
OddIRQ.Unset();
for (var i = 0; i < NumberOfExternalInterrupts; ++i)
{
externalInterrupt[i] = false;
interruptEnable[i] = false;
interruptTriggers[i] = InterruptTrigger.None;
}
for (var i = 0; i < targetExternalPins.Length; ++i)
{
targetExternalPins[i] = 0;
}
for (var i = 0; i < externalInterruptToPinMapping.Length; ++i)
{
//both arrays have the same length
externalInterruptToPinMapping[i] = i % 4;
externalInterruptToPortMapping[i] = 0;
}
}
