private async void MeasureTimerTick(object sender, object e)
{
// read Temperature
double temperature = await bme280Sensor.ReadTemperature();
// convert to Fahrenheit
double fahrenheitTemperature = temperature * 1.8 + 32.0;
// read Proximity
int proximity = vncl4010Sensor.ReadProximity();
TemperatureStatus.Text = "The temperature is currently " + fahrenheitTemperature.ToString("n1") + "°F";
var colorRead = await colorSensor.GetClosestColor();
SolidColorBrush brush = new SolidColorBrush(Windows.UI.Color.FromArgb(255, colorRead.ColorValue.R, colorRead.ColorValue.G, colorRead.ColorValue.B));
this.Background = brush;
await IoTHub.SendDeviceToCloudMessage(fahrenheitTemperature, colorRead.ColorName);
await IoTCentral.SendTelemetryAsync(fahrenheitTemperature, colorRead.ColorName);
}
private async void InitializeDevices()
{
var gpio = GpioController.GetDefault();
// show an error if there is no GPIO controller
if (gpio is null)
{
interruptPin = null;
GpioStatus.Text = "There is no GPIO controller on this device.";
return;
}
// set up interrupt pin for proximity sensor
interruptPin = gpio.OpenPin(intPinNumber);
// pull up interrupt pin as sensor will pull down to notify
interruptPin.SetDriveMode(GpioPinDriveMode.InputPullUp);
// initialize BME280 Sensor + Intitialize VNCL4010
await Task.WhenAll(bme280Sensor.Initialize(), vncl4010Sensor.Initialize(), colorSensor.Initialize());
// listen to interrupt pin changes
interruptPin.ValueChanged += OnInterrupt;
GpioStatus.Text = "Connecting to IoT Hub...";
await IoTHub.ConnectToIoTHub();
GpioStatus.Text = "Connecting to IoT Central...";
IoTCentral.InitClient();
GpioStatus.Text = "";
TemperatureStatus.Text = "Waiting for data...";
// start measuring temperature and proximity
measureTimer.Start();
}
