// the interrupt handler for the button
void button_OnInterrupt(uint data1, uint data2, DateTime time)
{
if (upstreamMQTT != null)
{
try
{
upstreamMQTT.UnsubscribeFromEvents();
}
catch
{
}
upstreamMQTT.Disconnect();
upstreamMQTT = null;
NDLogger.Log("MQTT connection cancelled", LogLevel.Verbose);
}
else
{
try
{
startMQTT();
}
catch
{
}
}
}
public MQTTLogger(MQTTCloudPlatform platform)
{
this.platform = platform;
this.handler = logToMQTT;
}
void startMQTT()
{
IPHostEntry hostEntry = null;
try
{
hostEntry = Dns.GetHostEntry(Configuration.MQTT.HostName);
}
catch (SocketException se)
{
NDLogger.Log("Unable to get host entry by DNS error: " + se, LogLevel.Error);
return;
}
upstreamMQTT = new NDMQTT();
int returnCode = upstreamMQTT.Connect(hostEntry, Configuration.MQTT.UserName, Configuration.MQTT.Password, Configuration.MQTT.HostPort);
if (returnCode == 0)
{
NDLogger.AddLogger(new MQTTLogger(upstreamMQTT));
}
else
{
upstreamMQTT = null;
return;
}
upstreamMQTT.SubscribeToEvents(new int[] { 0 }, new String[] { Configuration.MQTT.SensorDataTopic });
}