41 lines
1.4 KiB
C#
41 lines
1.4 KiB
C#
using System;
|
|
using Windows.ApplicationModel.Background;
|
|
|
|
// Add using statements to the GrovePi libraries
|
|
using GrovePi;
|
|
using GrovePi.Sensors;
|
|
|
|
namespace GasSensorMQ2
|
|
{
|
|
public sealed class StartupTask : IBackgroundTask
|
|
{
|
|
public void Run(IBackgroundTaskInstance taskInstance)
|
|
{
|
|
// Connect the Gas Sensor MQ2 to analog port 0
|
|
IGasSensorMQ2 sensor = DeviceFactory.Build.GasSensorMQ2(Pin.AnalogPin0);
|
|
|
|
// Loop endlessly
|
|
while (true)
|
|
{
|
|
try
|
|
{
|
|
// Check the value of the button, turn it into a string.
|
|
string sensorvalue = sensor.SensorValue().ToString();
|
|
System.Diagnostics.Debug.WriteLine("Gas Sensor value is " + sensorvalue);
|
|
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
// NOTE: There are frequent exceptions of the following:
|
|
// WinRT information: Unexpected number of bytes was transferred. Expected: '. Actual: '.
|
|
// This appears to be caused by the rapid frequency of writes to the GPIO
|
|
// These are being swallowed here/
|
|
|
|
// If you want to see the exceptions uncomment the following:
|
|
// System.Diagnostics.Debug.WriteLine(ex.ToString());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|