private void pollInterrupt(Object p)
{
pollParams pp = (pollParams)p;
int errCnt = 0;
while (!pp.cancelToken.IsCancellationRequested)
{
try
{
if (poll(this.deviceHandle, this.pollTimeout))
{
OnInterruptOccured();
}
errCnt = 0;
} catch (IOException)
{
errCnt++;
if (errCnt > 3)
{
throw;
}
else
{
System.Threading.Thread.Sleep(10); // * (int)Math.Pow(10, errCnt-1));
}
}
}
}
public GpioEdgeDetector(byte pin, EdgeDetectionMode edge, int pollTimeout = 1000)
{
this.pin = pin;
this.deviceName = String.Format("/sys/class/gpio/gpio{0}/value", pin);
this.pollTimeout = pollTimeout;
// enable edge detection
setEdgeDetection(pin, edge);
// open gpio file handle
openEdgeDetectionFileHandle();
// start async polling task
cancelTokenSource = new System.Threading.CancellationTokenSource();
pollParams p = new pollParams();
p.cancelToken = cancelTokenSource.Token;
// TODO: Error Handling!
Task.Factory.StartNew(new Action <Object>(pollInterrupt), p, cancelTokenSource.Token, TaskCreationOptions.LongRunning, TaskScheduler.Default).
ContinueWith((t) => {
Console.WriteLine(String.Format("GpioEdgeDetector Error: {0}", (t.Exception != null ? t.Exception.ToString() : String.Empty)));
}, System.Threading.CancellationToken.None, TaskContinuationOptions.OnlyOnFaulted, TaskScheduler.Current);
}