public async void Run(IBackgroundTaskInstance taskInstance)
{
// Get a BackgroundTaskDeferral and hold it forever if initialization is sucessful.
_deferral = taskInstance.GetDeferral();
try
{
await _station.InitAsync();
}
catch (Exception e)
{
Debug.WriteLine("I2C initialization failed: " + e.Message);
_deferral.Complete();
return;
}
AppServiceBridge.RequestReceived += AppServiceRequestHandler;
await AppServiceBridge.InitAsync();
await _client.InitAsync();
taskInstance.Canceled += (IBackgroundTaskInstance sender, BackgroundTaskCancellationReason reason) =>
{
Debug.WriteLine("Cancelled: reason " + reason);
_deferral.Complete();
};
MemoryManager.AppMemoryUsageIncreased += MemoryManager_AppMemoryUsageIncreased;
_timer = ThreadPoolTimer.CreatePeriodicTimer(LogSensorDataAsync, TimeSpan.FromSeconds(5));
LogSensorDataAsync(null);
}
private async Task SendPropertyChange(IEnumerable changedProperties, object userContext)
{
ValueSet properties = new ValueSet();
foreach (var prop in changedProperties)
{
var pair = (KeyValuePair <string, object>)prop;
var value = pair.Value as JValue;
if (value == null)
{
Debug.WriteLine("Twin key " + pair.Key + " has unsupported type");
continue;
}
properties.Add(pair.Key, pair.Value.ToString());
}
await AppServiceBridge.SendMessageAsync(properties);
}
private async void LogSensorDataAsync(ThreadPoolTimer timer)
{
var temperature = _station.ReadTemperature();
var humidity = _station.ReadHumidity();
var pressure = _station.ReadPressure();
await _client.LogDataAsync(temperature, humidity, pressure);
await AppServiceBridge.SendMessageAsync(new ValueSet
{
["temperature"] = temperature,
["humidity"] = humidity,
["pressure"] = pressure
});
Debug.WriteLine("Logged data");
}
