/// <summary>
/// Establish a link with an instrument
/// Handles retries for failed connections
/// </summary>
/// <param name="retryAttempts"></param>
/// <returns></returns>
public async Task Connect(int retryAttempts = MaxConnectionAttempts)
{
var connectionAttempts = 0;
CancellationTokenSource = new CancellationTokenSource();
var ct = CancellationTokenSource.Token;
var result = Task.Run(async() =>
{
while (!IsConnected)
{
connectionAttempts++;
Log.Info($"[{CommPort.Name}] Connecting to Instrument... Attempt {connectionAttempts} of {MaxConnectionAttempts}");
try
{
if (!CommPort.IsOpen())
{
await CommPort.Open();
}
await ConnectToInstrument();
}
catch (Exception ex)
{
Log.Warn(ex.Message);
}
if (!IsConnected)
{
if (connectionAttempts < retryAttempts)
{
Thread.Sleep(ConnectionRetryDelayMs);
}
else
{
throw new Exception($"{CommPort.Name} Could not connect to instrument.");
}
}
}
}, ct);
try
{
await result;
}
catch (AggregateException e)
{
foreach (var v in e.InnerExceptions)
{
Log.Warn(e.Message + " " + v.Message);
}
}
finally
{
CancellationTokenSource.Dispose();
}
}