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using System;
using System.Collections;
using Microsoft.SPOT;
using Microsoft.SPOT.Hardware;
namespace UAM.InformatiX.SPOT.Hardware
{
public static class PortStore
{
public static bool DefaultOutputPortValue =
false;
public static bool UseGlitchFilter =
false;
public static Port.ResistorMode DefaultResistorMode = Port.ResistorMode.PullUp;
private class OutputPortInstance : IDisposable
{
public OutputPort Hardware;
public void Dispose()
{
if (Hardware !=
null)
Hardware.Dispose();
}
public OutputPortInstance(Cpu.Pin id)
{
Hardware =
new OutputPort(id,
false);
}
}
private class InputPortInstance : IDisposable
{
public InputPort Hardware;
public void Dispose()
{
if (Hardware !=
null)
Hardware.Dispose();
}
public InputPortInstance(Cpu.Pin id)
{
Hardware =
new InputPort(id, UseGlitchFilter, DefaultResistorMode);
}
}
private class TristatePortInstance : IDisposable
{
public TristatePort Hardware;
public void Dispose()
{
if (Hardware !=
null)
Hardware.Dispose();
}
public TristatePortInstance(Cpu.Pin id)
{
Hardware =
new TristatePort(id, DefaultOutputPortValue, UseGlitchFilter, DefaultResistorMode);
Hardware.Active =
false;
}
}
private static ArrayList store =
new ArrayList();
private static ArrayList indices =
new ArrayList();
public static OutputPort GetOutput(Cpu.Pin pin)
{
lock (indices)
{
int index = indices.IndexOf(pin);
if (index == -1)
{
index = indices.Add(pin);
store.Add(
new OutputPortInstance(pin));
}
if (store[index]
is OutputPortInstance)
return ((OutputPortInstance)store[index]).Hardware;
throw new InvalidOperationException(
"Pin is already used for another port type.");
}
}
public static InputPort GetInput(Cpu.Pin pin)
{
lock (indices)
{
int index = indices.IndexOf(pin);
if (index == -1)
{
index = indices.Add(pin);
store.Add(
new InputPortInstance(pin));
}
if (store[index]
is InputPortInstance)
return ((InputPortInstance)store[index]).Hardware;
throw new InvalidOperationException(
"Pin is already used for another port type.");
}
}
public static TristatePort GetTristate(Cpu.Pin pin)
{
lock (indices)
{
int index = indices.IndexOf(pin);
if (index == -1)
{
index = indices.Add(pin);
store.Add(
new TristatePortInstance(pin));
}
if (store[index]
is TristatePortInstance)
return ((TristatePortInstance)store[index]).Hardware;
throw new InvalidOperationException(
"Pin is already used for another port type.");
}
}
}
}