const float ReferenceVoltage = 5.0F; // The MCP3008 works on a 5v reference voltage.
#endregion
public async void Run(IBackgroundTaskInstance taskInstance)
{
// Using BackgroundTaskDeferral
// as described in http://aka.ms/backgroundtaskdeferral
BackgroundTaskDeferral deferral = taskInstance.GetDeferral();
mcp3008 = new MCP3008(ReferenceVoltage);
mcp3008.Initialize();
InitGPIO();
adcSensorData = new MCP3008SensorData();
string roomstatus = String.Empty;
while (true)
{
Debug.WriteLine("Reading taken at " + DateTime.UtcNow);
#region Reading Force Information from Sensor
adcSensorData = ReadData();
Debug.WriteLine("Reading: " + adcSensorData.forceReading);
#endregion
//await SendDeviceToCloudMessageAsync(roomstatus, bmpSensorData, adcSensorData);
await Task.Delay(1000);
}
// Once the asynchronous method(s) are done, close the deferral.
// deferral.Complete();
}
private MCP3008SensorData ReadData()
{
var MCP3008SensorData = new MCP3008SensorData();
try
{
if (mcp3008 == null)
{
Debug.WriteLine("Force Sensor data is not ready");
return(MCP3008SensorData);
}
// Read from the ADC chip the current values of the two pots and the photo cell.
MCP3008SensorData.forceReading = mcp3008.ReadADC(0); // Read from analogue input channel 0.
// convert the ADC readings to voltages to make them more friendly.
MCP3008SensorData.forceReadingVolts = mcp3008.ADCToVoltage(MCP3008SensorData.forceReading);
// Let us know what was read in.
Debug.WriteLine(String.Format("Read value {0}, {1} volts. ", MCP3008SensorData.forceReading, MCP3008SensorData.forceReadingVolts));
return(MCP3008SensorData);
}
catch (Exception)
{
return(MCP3008SensorData);
}
}
//private string CheckForStateValue(eState newState)
//{
// String lightStatus;
// switch (newState)
// {
// case eState.JustRight:
// {
// lightStatus = JustRightLightString;
// }
// break;
// case eState.TooBright:
// {
// lightStatus = HighLightString;
// }
// break;
// case eState.TooDark:
// {
// lightStatus = LowLightString;
// }
// break;
// default:
// {
// lightStatus = "N/A";
// }
// break;
// }
// return lightStatus;
//}
private async Task SendDeviceToCloudMessageAsync(string status, BMP280SensorData BMP280SensorData, MCP3008SensorData MCP3008SensorData)
{
ConferenceRoomDataPoint conferenceRoomDataPoint = new ConferenceRoomDataPoint()
{
DeviceId = deviceName,
Time = DateTime.UtcNow.ToString("o"),
RoomTemp = BMP280SensorData.Temperature.ToString(),
RoomPressure = BMP280SensorData.Pressure.ToString(),
RoomAlt = BMP280SensorData.Altitude.ToString(),
};
if (status == "Occupied")
{
conferenceRoomDataPoint.Color = "Red";
}
else
{
conferenceRoomDataPoint.Color = "Green";
}
var jsonString = JsonConvert.SerializeObject(conferenceRoomDataPoint);
//var jsonStringInBytes = new Message(Encoding.ASCII.GetBytes(jsonString));
await AzureIoTHub.SendDeviceToCloudMessageAsync(jsonString);
Debug.WriteLine("{0} > Sending message: {1}", DateTime.UtcNow, jsonString);
}