void GpioChangeListener(object param)
{
int recvSize = 4096;
byte[] buf = new byte[recvSize];
int messageSize = 12;
while (m_run == true)
{
try
{
var bytesReceived = m_socket.Receive(buf, recvSize, SocketFlags.None);
int offset = 0;
while ((bytesReceived - offset) >= messageSize)
{
var seq = (ushort)PiGpioSharp.GetInt16FromByteArrayEndianessCorrected(buf, 0 + offset);
var flags = (ushort)PiGpioSharp.GetInt16FromByteArrayEndianessCorrected(buf, 2 + offset);
var tick = (uint)PiGpioSharp.GetInt32FromByteArrayEndianessCorrected(buf, 4 + offset);
var level = (uint)PiGpioSharp.GetInt32FromByteArrayEndianessCorrected(buf, 8 + offset);
offset += messageSize;
if (flags == 0)
{
var changes = m_lastLevel ^ level;
m_lastLevel = level;
m_lock.WaitOne();
var tmpsubscribers = new Dictionary <int, GpioSubscriber>(m_changeSubscribers);
m_lock.ReleaseMutex();
foreach (var subscriber in tmpsubscribers)
{
if (((1 << subscriber.Value.GpioNumber) & changes) > 0)
{
var newLevel = (uint)0;
if (((1 << subscriber.Value.GpioNumber) & level) > 0)
{
newLevel = 1;
}
if ((newLevel ^ (uint)subscriber.Value.Edge) > 0)
{
subscriber.Value.Callback(subscriber.Value.GpioNumber, newLevel, tick);
}
}
}
}
}
/* TODO: Add other flags */
}
catch (SocketException)
{ }
}
}
public Serial(PiGpioSharp pi)
{
m_pi = pi;
}
public Gpio(PiGpioSharp pi)
{
m_pi = pi;
m_run = false;
m_lock = new Mutex();
}