private async void OnAppServiceRequestReceived(AppServiceConnection sender, AppServiceRequestReceivedEventArgs args)
{
AppServiceDeferral messageDeferral = args.GetDeferral();
ValueSet message = args.Request.Message;
string text = message["Request"] as string;
if ("DeviceID" == text)
{
ValueSet returnMessage = new ValueSet();
var systemId = SystemIdentification.GetSystemIdForPublisher().Id;
var dataReader = Windows.Storage.Streams.DataReader.FromBuffer(systemId);
byte[] bytes = new byte[systemId.Length];
dataReader.ReadBytes(bytes);
string response = "Publisher System ID (systemId): " + BitConverter.ToString(bytes);
//Send SystemIdentification back over Appservice
returnMessage.Add("Response", response);
await args.Request.SendResponseAsync(returnMessage);
//Temporary hack - wait for a few seconds for the named pipe to be set up
await Task.Delay(TimeSpan.FromSeconds(2));
await Windows.ApplicationModel.FullTrustProcessLauncher.LaunchFullTrustProcessForCurrentAppAsync();
}
messageDeferral.Complete();
}
protected override string GetPlatformDeviceId()
{
var systemId = SystemIdentification.GetSystemIdForPublisher();
var dataReader = DataReader.FromBuffer(systemId.Id);
return(dataReader.ReadGuid().ToString());
}
//--------------------------------------------------------Attributes:-----------------------------------------------------------------\\
#region --Attributes--
#endregion
//--------------------------------------------------------Constructor:----------------------------------------------------------------\\
#region --Constructors--
#endregion
//--------------------------------------------------------Set-, Get- Methods:---------------------------------------------------------\\
#region --Set-, Get- Methods--
/// <summary>
/// Returns a hex string representing an unique device ID.
/// The device ID is a SHA256 hash, hex string of the actual device ID XOR a device nonce to prevent tracking between apps.
/// </summary>
public static string GetUniqueDeviceId()
{
byte[] deviceId;
SystemIdentificationInfo systemId = SystemIdentification.GetSystemIdForPublisher();
if (systemId.Source != SystemIdentificationSource.None)
{
deviceId = systemId.Id.ToArray();
}
else
{
// Fall back to generating a unique ID based on the hardware of the system.
// This ID will change once the hardware changes.
// Based on: https://montemagno.com/unique-device-id-for-mobile-apps/
HardwareToken hwToken = HardwareIdentification.GetPackageSpecificToken(null);
deviceId = hwToken.Id.ToArray();
}
byte[] nonce = GetDeviceNonce();
// Ensure the device ID is long enough:
deviceId = deviceId.Length >= 32 ? XorShorten(deviceId, nonce) : nonce;
SHA256 sha = SHA256.Create();
deviceId = sha.ComputeHash(deviceId);
return(ByteArrayToHexString(deviceId));
}
private static Task InitializeAppTelemetryClientAsync()
{
Task initializeClient = new Task(() =>
{
TelemetryConfiguration.Active.TelemetryChannel.EndpointAddress = "https://vortex.data.microsoft.com/collect/v1";
TelemetryConfiguration.Active.InstrumentationKey = "AIF-a6c90b8a-c7f9-4d3f-96f4-d5f9dbd4b4ce";
_telemetryClient = new TelemetryClient();
_sessionId = Guid.NewGuid().ToString().ToUpperInvariant();
if (Windows.Foundation.Metadata.ApiInformation.IsTypePresent("Windows.System.Profile.SystemIdentification") &&
Windows.Foundation.Metadata.ApiInformation.IsMethodPresent("Windows.System.Profile.SystemIdentification", "GetSystemIdForPublisher"))
{
var systemId = SystemIdentification.GetSystemIdForPublisher();
if (systemId != null)
{
var dataReader = Windows.Storage.Streams.DataReader.FromBuffer(systemId.Id);
byte[] bytes = new byte[systemId.Id.Length];
dataReader.ReadBytes(bytes);
_machineId = BitConverter.ToString(bytes);
}
}
_isInitialized = true;
});
initializeClient.Start();
return(initializeClient);
}
private string GetDeviceUID()
{
var uid = SystemIdentification.GetSystemIdForPublisher();
using (DataReader reader = DataReader.FromBuffer(uid.Id))
{
byte[] bytes = new byte[uid.Id.Length];
reader.ReadBytes(bytes);
return(BitConverter.ToString(bytes).Replace("-", string.Empty));;
}
}
/// <summary>
/// Gets the device unique ID, or uses the fallback if none is available due to application configuration.
/// </summary>
/// <returns>
/// The discovered device identifier.
/// </returns>
public virtual string GetDeviceUniqueId()
{
if (this.deviceId != null)
{
return(this.deviceId);
}
this.deviceId = CryptographicBuffer.EncodeToBase64String(SystemIdentification.GetSystemIdForPublisher().Id);
return(this.deviceId);
}
public void Run(IBackgroundTaskInstance taskInstance)
{
var id = SystemIdentification.GetSystemIdForPublisher().Id;
_rpiSensorId = CryptographicBuffer.EncodeToBase64String(id);
var deviceInfo = new EasClientDeviceInformation();
var friendlyName = deviceInfo.FriendlyName;
// Get the toilet settings for the specific toilet.
ToiletSettings toiletSettings = GetToiletSettings(_rpiSensorId, friendlyName);
_toiletId = toiletSettings.ToiletId;
_updateFrequency = toiletSettings.UpdateFrequency;
_fanMode = toiletSettings.FanMode;
_fanThreshold = toiletSettings.FanThreshold;
_connection = new HubConnectionBuilder()
.WithUrl("[REDACTED]")
.Build();
_connection.Closed += async error =>
{
await Task.Delay(new Random().Next(0, 5) * 1000);
await _connection.StartAsync();
};
Connect();
StartUart();
Task.Run(new Action(SendDataToPubHub));
Task.Run(new Action(UploadSensorValuesToInfluxDb));
while (true)
{
try
{
// Read the sensors values.
ReadDistanceSensors();
ProcessDistanceReadings();
CheckButtonPressed();
ReadGasValue();
ControlFan();
}
catch (Exception ex)
{
Debug.WriteLine("An error occurred while reading the sensors values: " + ex.Message);
}
}
}
//--------------------------------------------------------Attributes:-----------------------------------------------------------------\\
#region --Attributes--
#endregion
//--------------------------------------------------------Constructor:----------------------------------------------------------------\\
#region --Constructors--
#endregion
//--------------------------------------------------------Set-, Get- Methods:---------------------------------------------------------\\
#region --Set-, Get- Methods--
/// <summary>
/// Returns a hex string representing an unique device ID.
/// </summary>
public static string GetUniqueDeviceId()
{
SystemIdentificationInfo systemId = SystemIdentification.GetSystemIdForPublisher();
if (systemId.Source != SystemIdentificationSource.None)
{
return(ByteArrayToHexString(systemId.Id.ToArray()));
}
// Fall back to generating a unique ID based on the hardware of the system.
// This ID will change once the hardware changes.
// Based on: https://montemagno.com/unique-device-id-for-mobile-apps/
HardwareToken hwToken = HardwareIdentification.GetPackageSpecificToken(null);
return(ByteArrayToHexString(hwToken.Id.ToArray()));
}
public string GetSystemId()
{
var systemId = SystemIdentification.GetSystemIdForPublisher();
// Make sure this device can generate the IDs
if (systemId.Source != SystemIdentificationSource.None)
{
var dataReader = DataReader.FromBuffer(systemId.Id);
byte[] bytes = new byte[systemId.Id.Length];
dataReader.ReadBytes(bytes);
// The Id property has a buffer with the unique ID
return(BitConverter.ToString(bytes));
}
//if for some reason the above didnt generate a device id -> use a fallback method.
return(GetId());
}
public static string QueryPublisherId()
{
string publisherId = null;
if (ApiInformation.IsTypePresent("Windows.System.Profile.SystemIdentification"))
{
var systemId = SystemIdentification.GetSystemIdForPublisher();
if (systemId.Source != SystemIdentificationSource.None)
{
var idBuffer = systemId.Id;
var dataReader = Windows.Storage.Streams.DataReader.FromBuffer(idBuffer);
var bytes = new byte[idBuffer.Length];
dataReader.ReadBytes(bytes);
publisherId = Convert.ToBase64String(bytes);
}
}
return(publisherId);
}
private async void LoadHsmState()
{
var id = SystemIdentification.GetSystemIdForPublisher();
DeviceId.Text = id.Source == SystemIdentificationSource.Tpm ? "TPM" : "Other";
var userService = DrxServiceProvider.GetServiceProvider().GetService <UserService>();
if (await userService.IsMachineGenuineDit())
{
HsmState.Text = "Enabled";
HsmDisableReason.Text = "N/A";
}
else
{
HsmState.Text = "Disabled";
HsmDisableReason.Text = "Non-genuine machine";
}
}
private async void ShowProperties()
{
var selectedUser = (UserViewModel)UserList.SelectedValue;
if (selectedUser != null)
{
ResultsText.Text = "";
ProfileImage.Source = null;
rootPage.NotifyUser("", NotifyType.StatusMessage);
try
{
User user = User.GetFromId(selectedUser.UserId);
IBuffer aa = SystemIdentification.GetSystemIdForUser(user).Id;
IBuffer bb = SystemIdentification.GetSystemIdForUser(null).Id;
var aaS = SystemIdentification.GetSystemIdForUser(user).Id.ToArray();
var bbS = SystemIdentification.GetSystemIdForUser(null).Id.ToArray();
Debug.WriteLine("!!!" + aa + "~~~~~~~~~" + bb);
// Start with some fixed properties.
String result = "NonRoamableId: " + user.NonRoamableId + "\n";
result += "Type: " + user.Type.ToString() + "\n";
result += "AuthenticationStatus: " + user.AuthenticationStatus.ToString() + "\n";
// Build a list of all the properties we want.
String[] desiredProperties = new String[]
{
KnownUserProperties.FirstName,
KnownUserProperties.LastName,
KnownUserProperties.ProviderName,
KnownUserProperties.AccountName,
KnownUserProperties.GuestHost,
KnownUserProperties.PrincipalName,
KnownUserProperties.DomainName,
KnownUserProperties.SessionInitiationProtocolUri,
};
// Issue a bulk query for all of the properties.
IPropertySet values = await user.GetPropertiesAsync(desiredProperties);
// Add those properties to our results.
foreach (String property in desiredProperties)
{
result += property + ": " + values[property] + "\n";
}
ResultsText.Text = result;
// Get the user's picture.
IRandomAccessStreamReference streamReference = await user.GetPictureAsync(UserPictureSize.Size64x64);
if (streamReference != null)
{
IRandomAccessStream stream = await streamReference.OpenReadAsync();
BitmapImage bitmapImage = new BitmapImage();
bitmapImage.SetSource(stream);
ProfileImage.Source = bitmapImage;
}
}
catch (Exception ex)
{
rootPage.NotifyUser(ex.Message, NotifyType.ErrorMessage);
}
}
}
public void Run(IBackgroundTaskInstance taskInstance)
{
StorageFolder localFolder = ApplicationData.Current.LocalFolder;
TimeSpan imageUpdateDue;
TimeSpan imageUpdatePeriod;
this.logging.LogEvent("Application starting");
// Log the Application build, OS version information etc.
LoggingFields startupInformation = new LoggingFields();
startupInformation.AddString("Timezone", TimeZoneSettings.CurrentTimeZoneDisplayName);
startupInformation.AddString("OSVersion", Environment.OSVersion.VersionString);
startupInformation.AddString("MachineName", Environment.MachineName);
// This is from the application manifest
Package package = Package.Current;
PackageId packageId = package.Id;
PackageVersion version = packageId.Version;
startupInformation.AddString("ApplicationVersion", string.Format($"{version.Major}.{version.Minor}.{version.Build}.{version.Revision}"));
try
{
// see if the configuration file is present if not copy minimal sample one from application directory
if (localFolder.TryGetItemAsync(ConfigurationFilename).AsTask().Result == null)
{
StorageFile templateConfigurationfile = Package.Current.InstalledLocation.GetFileAsync(ConfigurationFilename).AsTask().Result;
templateConfigurationfile.CopyAsync(localFolder, ConfigurationFilename).AsTask();
}
IConfiguration configuration = new ConfigurationBuilder().AddJsonFile(Path.Combine(localFolder.Path, ConfigurationFilename), false, true).Build();
this.interruptPinNumber = int.Parse(configuration.GetSection("InterruptPinNumber").Value);
startupInformation.AddInt32("Interrupt pin", this.interruptPinNumber);
this.interruptTriggerOn = (GpioPinEdge)Enum.Parse(typeof(GpioPinEdge), configuration.GetSection("interruptTriggerOn").Value);
startupInformation.AddString("Interrupt Trigger on", this.interruptTriggerOn.ToString());
this.displayPinNumber = int.Parse(configuration.GetSection("DisplayPinNumber").Value);
startupInformation.AddInt32("Display pin", this.interruptPinNumber);
this.azureIoTHubConnectionString = configuration.GetSection("AzureIoTHubConnectionString").Value;
startupInformation.AddString("AzureIoTHubConnectionString", this.azureIoTHubConnectionString);
this.transportType = (TransportType)Enum.Parse(typeof(TransportType), configuration.GetSection("TransportType").Value);
startupInformation.AddString("TransportType", this.transportType.ToString());
}
catch (Exception ex)
{
this.logging.LogMessage("JSON configuration file load or settings retrieval failed " + ex.Message, LoggingLevel.Error);
return;
}
#region AzureIoT Hub connection string creation
try
{
this.azureIoTHubClient = DeviceClient.CreateFromConnectionString(this.azureIoTHubConnectionString, this.transportType);
}
catch (Exception ex)
{
this.logging.LogMessage("AzureIOT Hub DeviceClient.CreateFromConnectionString failed " + ex.Message, LoggingLevel.Error);
return;
}
#endregion
#region Report device and application properties to AzureIoT Hub
try
{
TwinCollection reportedProperties = new TwinCollection();
// This is from the OS
reportedProperties["Timezone"] = TimeZoneSettings.CurrentTimeZoneDisplayName;
reportedProperties["OSVersion"] = Environment.OSVersion.VersionString;
reportedProperties["MachineName"] = Environment.MachineName;
reportedProperties["ApplicationDisplayName"] = package.DisplayName;
reportedProperties["ApplicationName"] = packageId.Name;
reportedProperties["ApplicationVersion"] = string.Format($"{version.Major}.{version.Minor}.{version.Build}.{version.Revision}");
// Unique identifier from the hardware
SystemIdentificationInfo systemIdentificationInfo = SystemIdentification.GetSystemIdForPublisher();
using (DataReader reader = DataReader.FromBuffer(systemIdentificationInfo.Id))
{
byte[] bytes = new byte[systemIdentificationInfo.Id.Length];
reader.ReadBytes(bytes);
reportedProperties["SystemId"] = BitConverter.ToString(bytes);
}
this.azureIoTHubClient.UpdateReportedPropertiesAsync(reportedProperties).Wait();
}
catch (Exception ex)
{
this.logging.LogMessage("Azure IoT Hub client UpdateReportedPropertiesAsync failed " + ex.Message, LoggingLevel.Error);
return;
}
#endregion
#region Retrieve device twin settings
try
{
LoggingFields configurationInformation = new LoggingFields();
Twin deviceTwin = this.azureIoTHubClient.GetTwinAsync().GetAwaiter().GetResult();
if (!deviceTwin.Properties.Desired.Contains("ImageUpdateDue") || !TimeSpan.TryParse(deviceTwin.Properties.Desired["ImageUpdateDue"].value.ToString(), out imageUpdateDue))
{
this.logging.LogMessage("DeviceTwin.Properties ImageUpdateDue setting missing or invalid format", LoggingLevel.Warning);
return;
}
configurationInformation.AddTimeSpan("ImageUpdateDue", imageUpdateDue);
if (!deviceTwin.Properties.Desired.Contains("ImageUpdatePeriod") || !TimeSpan.TryParse(deviceTwin.Properties.Desired["ImageUpdatePeriod"].value.ToString(), out imageUpdatePeriod))
{
this.logging.LogMessage("DeviceTwin.Properties ImageUpdatePeriod setting missing or invalid format", LoggingLevel.Warning);
return;
}
configurationInformation.AddTimeSpan("ImageUpdatePeriod", imageUpdatePeriod);
if (!deviceTwin.Properties.Desired.Contains("ModelType") || (!Enum.TryParse(deviceTwin.Properties.Desired["ModelType"].value.ToString(), out modelType)))
{
this.logging.LogMessage("DeviceTwin.Properties ModelType setting missing or invalid format", LoggingLevel.Warning);
return;
}
configurationInformation.AddString("ModelType", modelType.ToString());
if (!deviceTwin.Properties.Desired.Contains("ModelPublishedName") || (string.IsNullOrWhiteSpace(deviceTwin.Properties.Desired["ModelPublishedName"].value.ToString())))
{
this.logging.LogMessage("DeviceTwin.Properties ModelPublishedName setting missing or invalid format", LoggingLevel.Warning);
return;
}
modelPublishedName = deviceTwin.Properties.Desired["ModelPublishedName"].value.ToString();
configurationInformation.AddString("ModelPublishedName", modelPublishedName);
if (!deviceTwin.Properties.Desired.Contains("ProjectID") || (!Guid.TryParse(deviceTwin.Properties.Desired["ProjectID"].value.ToString(), out projectId)))
{
this.logging.LogMessage("DeviceTwin.Properties ProjectId setting missing or invalid format", LoggingLevel.Warning);
return;
}
configurationInformation.AddGuid("ProjectID", projectId);
if (!deviceTwin.Properties.Desired.Contains("ProbabilityThreshold") || (!Double.TryParse(deviceTwin.Properties.Desired["ProbabilityThreshold"].value.ToString(), out probabilityThreshold)))
{
this.logging.LogMessage("DeviceTwin.Properties ProbabilityThreshold setting missing or invalid format", LoggingLevel.Warning);
return;
}
configurationInformation.AddDouble("ProbabilityThreshold", probabilityThreshold);
if (!deviceTwin.Properties.Desired.Contains("AzureCognitiveServicesEndpoint") || (string.IsNullOrWhiteSpace(deviceTwin.Properties.Desired["AzureCognitiveServicesEndpoint"].value.ToString())))
{
this.logging.LogMessage("DeviceTwin.Properties AzureCognitiveServicesEndpoint setting missing or invalid format", LoggingLevel.Warning);
return;
}
azureCognitiveServicesEndpoint = deviceTwin.Properties.Desired["AzureCognitiveServicesEndpoint"].value.ToString();
configurationInformation.AddString("AzureCognitiveServicesEndpoint", modelPublishedName);
if (!deviceTwin.Properties.Desired.Contains("AzureCognitiveServicesSubscriptionKey") || (string.IsNullOrWhiteSpace(deviceTwin.Properties.Desired["AzureCognitiveServicesSubscriptionKey"].value.ToString())))
{
this.logging.LogMessage("DeviceTwin.Properties AzureCognitiveServicesSubscriptionKey setting missing or invalid format", LoggingLevel.Warning);
return;
}
azureCognitiveServicesSubscriptionKey = deviceTwin.Properties.Desired["AzureCognitiveServicesSubscriptionKey"].value.ToString();
configurationInformation.AddString("AzureCognitiveServicesSubscriptionKey", azureCognitiveServicesSubscriptionKey);
if (!deviceTwin.Properties.Desired.Contains("DebounceTimeout") || !TimeSpan.TryParse(deviceTwin.Properties.Desired["DebounceTimeout"].value.ToString(), out debounceTimeout))
{
this.logging.LogMessage("DeviceTwin.Properties DebounceTimeout setting missing or invalid format", LoggingLevel.Warning);
return;
}
configurationInformation.AddTimeSpan("DebounceTimeout", debounceTimeout);
this.logging.LogEvent("Configuration settings", configurationInformation);
}
catch (Exception ex)
{
this.logging.LogMessage("Azure IoT Hub client GetTwinAsync failed or property missing/invalid" + ex.Message, LoggingLevel.Error);
return;
}
#endregion
try
{
this.customVisionClient = new CustomVisionPredictionClient(new System.Net.Http.DelegatingHandler[] { })
{
ApiKey = this.azureCognitiveServicesSubscriptionKey,
Endpoint = this.azureCognitiveServicesEndpoint,
};
}
catch (Exception ex)
{
this.logging.LogMessage("Azure Cognitive Services Custom Vision Client configuration failed " + ex.Message, LoggingLevel.Error);
return;
}
try
{
this.mediaCapture = new MediaCapture();
this.mediaCapture.InitializeAsync().AsTask().Wait();
}
catch (Exception ex)
{
this.logging.LogMessage("Camera configuration failed " + ex.Message, LoggingLevel.Error);
return;
}
this.displayOffTimer = new Timer(this.TimerCallback, null, Timeout.Infinite, Timeout.Infinite);
#region Wire up interupt handler for image capture request
if (this.interruptPinNumber != 0)
{
try
{
GpioController gpioController = GpioController.GetDefault();
this.interruptGpioPin = gpioController.OpenPin(this.interruptPinNumber);
this.interruptGpioPin.SetDriveMode(GpioPinDriveMode.InputPullUp);
this.interruptGpioPin.ValueChanged += this.InterruptGpioPin_ValueChanged;
this.displayGpioPin = gpioController.OpenPin(this.displayPinNumber);
this.displayGpioPin.SetDriveMode(GpioPinDriveMode.Output);
this.displayGpioPin.Write(GpioPinValue.Low);
}
catch (Exception ex)
{
this.logging.LogMessage("Digital input configuration failed " + ex.Message, LoggingLevel.Error);
return;
}
}
#endregion
#region Wire up command handler for image capture request
try
{
this.azureIoTHubClient.SetMethodHandlerAsync("ImageCapture", this.ImageUpdateHandler, null);
}
catch (Exception ex)
{
this.logging.LogMessage("Azure IoT Hub client ImageCapture SetMethodHandlerAsync failed " + ex.Message, LoggingLevel.Error);
return;
}
#endregion
#region Wire up command handler for device reboot request
try
{
this.azureIoTHubClient.SetMethodHandlerAsync("DeviceReboot", this.DeviceRebootAsync, null);
}
catch (Exception ex)
{
this.logging.LogMessage("Azure IoT Hub client DeviceReboot SetMethodHandlerAsync failed " + ex.Message, LoggingLevel.Error);
return;
}
#endregion
if ((imageUpdateDue != TimeSpan.MinValue) || (imageUpdatePeriod != TimeSpan.MinValue))
{
this.imageUpdatetimer = new Timer(this.ImageUpdateTimerCallback, null, imageUpdateDue, imageUpdatePeriod);
}
this.logging.LogEvent("Application started", startupInformation);
// enable task to continue running in background
this.backgroundTaskDeferral = taskInstance.GetDeferral();
}
public void Run(IBackgroundTaskInstance taskInstance)
{
DeviceRegistrationResult result;
try
{
bme280Sensor = new BME280(0x76);
}
catch (Exception ex)
{
Debug.WriteLine($"BME280 Initialisation failed:{ex.Message}");
return;
}
try
{
using (var security = new SecurityProviderTpmHsm(RegistrationId))
using (var transport = new ProvisioningTransportHandlerHttp())
{
string base64EK = Convert.ToBase64String(security.GetEndorsementKey());
ProvisioningDeviceClient provClient = ProvisioningDeviceClient.Create(GlobalDeviceEndpoint, IdScope, security, transport);
result = provClient.RegisterAsync().ConfigureAwait(false).GetAwaiter().GetResult();
IAuthenticationMethod auth = new DeviceAuthenticationWithTpm(result.DeviceId, security);
azureIoTHubClient = DeviceClient.Create(result.AssignedHub, auth, TransportType.Mqtt);
}
}
catch (Exception ex)
{
Debug.WriteLine($"DeviceClient.Create with TPM info failed:{ex.Message}");
return;
}
try
{
azureIoTHubClient.SetMethodHandlerAsync("Restart", RestartAsync, null);
}
catch (Exception ex)
{
Debug.WriteLine($"Azure IoT Hub device method handler configuration failed:{ex.Message}");
return;
}
try
{
TwinCollection reportedProperties;
reportedProperties = new TwinCollection();
// This is from the OS
reportedProperties["Timezone"] = TimeZoneSettings.CurrentTimeZoneDisplayName;
reportedProperties["OSVersion"] = Environment.OSVersion.VersionString;
reportedProperties["MachineName"] = Environment.MachineName;
// This is from the application manifest
Package package = Package.Current;
PackageId packageId = package.Id;
PackageVersion version = packageId.Version;
reportedProperties["ApplicationDisplayName"] = package.DisplayName;
reportedProperties["ApplicationName"] = packageId.Name;
reportedProperties["ApplicationVersion"] = string.Format($"{version.Major}.{version.Minor}.{version.Build}.{version.Revision}");
// Unique identifier from the hardware
SystemIdentificationInfo systemIdentificationInfo = SystemIdentification.GetSystemIdForPublisher();
using (DataReader reader = DataReader.FromBuffer(systemIdentificationInfo.Id))
{
byte[] bytes = new byte[systemIdentificationInfo.Id.Length];
reader.ReadBytes(bytes);
reportedProperties["SystemId"] = BitConverter.ToString(bytes);
}
azureIoTHubClient.UpdateReportedPropertiesAsync(reportedProperties).Wait();
}
catch (Exception ex)
{
Debug.Print($"Azure IoT Hub device twin configuration retrieval failed:{ex.Message}");
return;
}
try
{
deviceTwin = azureIoTHubClient.GetTwinAsync().Result;
}
catch (Exception ex)
{
Debug.WriteLine($"Azure IoT Hub device twin configuration retrieval failed:{ex.Message}");
return;
}
try
{
if (deviceTwin.Properties.Desired.Contains("TimerDue"))
{
timerDue = TimeSpan.Parse(deviceTwin.Properties.Desired["TimerDue"].ToString());
}
if (deviceTwin.Properties.Desired.Contains("TimerPeriod"))
{
timerPeriod = TimeSpan.Parse(deviceTwin.Properties.Desired["TimerPeriod"].ToString());
}
}
catch (Exception ex)
{
Debug.WriteLine($"Sensor due or period configuration retrieval failed using default:{ex.Message}");
return;
}
bme280InputPollingTimer = new Timer(SensorUpdateTimerCallback, null, timerDue, timerPeriod);
//enable task to continue running in background
backgroundTaskDeferral = taskInstance.GetDeferral();
}
public void Run(IBackgroundTaskInstance taskInstance)
{
StorageFolder localFolder = ApplicationData.Current.LocalFolder;
TimeSpan imageUpdateDue;
TimeSpan imageUpdatePeriod;
// Log the Application build, OS version information etc.
LoggingFields startupInformation = new LoggingFields();
startupInformation.AddString("Timezone", TimeZoneSettings.CurrentTimeZoneDisplayName);
startupInformation.AddString("OSVersion", Environment.OSVersion.VersionString);
startupInformation.AddString("MachineName", Environment.MachineName);
// This is from the application manifest
Package package = Package.Current;
PackageId packageId = package.Id;
PackageVersion version = packageId.Version;
startupInformation.AddString("ApplicationVersion", string.Format($"{version.Major}.{version.Minor}.{version.Build}.{version.Revision}"));
this.logging.LogEvent("Application startup", startupInformation);
#region Configuration file settings load and creation if not present
try
{
// see if the configuration file is present if not copy minimal sample one from application directory
if (localFolder.TryGetItemAsync(ConfigurationFilename).AsTask().Result == null)
{
StorageFile templateConfigurationfile = Package.Current.InstalledLocation.GetFileAsync(ConfigurationFilename).AsTask().Result;
templateConfigurationfile.CopyAsync(localFolder, ConfigurationFilename).AsTask();
this.logging.LogMessage("JSON configuration file missing, templated created", LoggingLevel.Warning);
return;
}
LoggingFields connnectionInformation = new LoggingFields();
IConfiguration configuration = new ConfigurationBuilder().AddJsonFile(Path.Combine(localFolder.Path, ConfigurationFilename), false, true).Build();
this.azureIoTHubConnectionString = configuration.GetSection("AzureIoTHubConnectionString").Value;
connnectionInformation.AddString("AzureIoTHubConnectionString", this.azureIoTHubConnectionString);
this.transportType = (TransportType)Enum.Parse(typeof(TransportType), configuration.GetSection("TransportType").Value);
connnectionInformation.AddString("TransportType", this.transportType.ToString());
this.logging.LogEvent("Connection settings", connnectionInformation);
}
catch (Exception ex)
{
this.logging.LogMessage("JSON configuration file load or AzureIoT Hub connection settings missing/invalid" + ex.Message, LoggingLevel.Error);
return;
}
#endregion
#region AzureIoT Hub connection string creation
try
{
this.azureIoTHubClient = DeviceClient.CreateFromConnectionString(this.azureIoTHubConnectionString, this.transportType);
}
catch (Exception ex)
{
this.logging.LogMessage("AzureIOT Hub DeviceClient.CreateFromConnectionString failed " + ex.Message, LoggingLevel.Error);
return;
}
#endregion
#region Report device and application properties to AzureIoT Hub
try
{
TwinCollection reportedProperties = new TwinCollection();
// This is from the OS
reportedProperties["Timezone"] = TimeZoneSettings.CurrentTimeZoneDisplayName;
reportedProperties["OSVersion"] = Environment.OSVersion.VersionString;
reportedProperties["MachineName"] = Environment.MachineName;
reportedProperties["ApplicationDisplayName"] = package.DisplayName;
reportedProperties["ApplicationName"] = packageId.Name;
reportedProperties["ApplicationVersion"] = string.Format($"{version.Major}.{version.Minor}.{version.Build}.{version.Revision}");
// Unique identifier from the hardware
SystemIdentificationInfo systemIdentificationInfo = SystemIdentification.GetSystemIdForPublisher();
using (DataReader reader = DataReader.FromBuffer(systemIdentificationInfo.Id))
{
byte[] bytes = new byte[systemIdentificationInfo.Id.Length];
reader.ReadBytes(bytes);
reportedProperties["SystemId"] = BitConverter.ToString(bytes);
}
this.azureIoTHubClient.UpdateReportedPropertiesAsync(reportedProperties).Wait();
}
catch (Exception ex)
{
this.logging.LogMessage("Azure IoT Hub client UpdateReportedPropertiesAsync failed " + ex.Message, LoggingLevel.Error);
return;
}
#endregion
#region Retrieve device twin settings
try
{
LoggingFields configurationInformation = new LoggingFields();
Twin deviceTwin = this.azureIoTHubClient.GetTwinAsync().GetAwaiter().GetResult();
if (!deviceTwin.Properties.Desired.Contains("AzureImageFilenameLatestFormat"))
{
this.logging.LogMessage("DeviceTwin.Properties AzureImageFilenameLatestFormat setting missing", LoggingLevel.Warning);
return;
}
this.azureStorageimageFilenameLatestFormat = deviceTwin.Properties.Desired["AzureImageFilenameLatestFormat"].Value;
configurationInformation.AddString("AzureImageFilenameLatestFormat", this.azureStorageimageFilenameLatestFormat);
if (!deviceTwin.Properties.Desired.Contains("AzureImageFilenameHistoryFormat"))
{
this.logging.LogMessage("DeviceTwin.Properties AzureImageFilenameHistoryFormat setting missing", LoggingLevel.Warning);
return;
}
this.azureStorageImageFilenameHistoryFormat = deviceTwin.Properties.Desired["AzureImageFilenameHistoryFormat"].Value;
configurationInformation.AddString("AzureImageFilenameHistoryFormat", this.azureStorageImageFilenameHistoryFormat);
if (!deviceTwin.Properties.Desired.Contains("ImageUpdateDue") || !TimeSpan.TryParse(deviceTwin.Properties.Desired["ImageUpdateDue"].Value.ToString(), out imageUpdateDue))
{
this.logging.LogMessage("DeviceTwin.Properties ImageUpdateDue setting missing or invalid format", LoggingLevel.Warning);
return;
}
configurationInformation.AddTimeSpan("ImageUpdateDue", imageUpdateDue);
if (!deviceTwin.Properties.Desired.Contains("ImageUpdatePeriod") || !TimeSpan.TryParse(deviceTwin.Properties.Desired["ImageUpdatePeriod"].Value.ToString(), out imageUpdatePeriod))
{
this.logging.LogMessage("DeviceTwin.Properties ImageUpdatePeriod setting missing or invalid format", LoggingLevel.Warning);
return;
}
configurationInformation.AddTimeSpan("ImageUpdatePeriod", imageUpdatePeriod);
this.logging.LogEvent("Configuration settings", configurationInformation);
}
catch (Exception ex)
{
this.logging.LogMessage("Azure IoT Hub client GetTwinAsync failed or property missing/invalid" + ex.Message, LoggingLevel.Error);
return;
}
#endregion
#region Initialise the camera hardware
try
{
this.mediaCapture = new MediaCapture();
this.mediaCapture.InitializeAsync().AsTask().Wait();
}
catch (Exception ex)
{
this.logging.LogMessage("mediaCapture.InitializeAsync failed " + ex.Message, LoggingLevel.Error);
return;
}
#endregion
#region Wire up command handler for image capture request
try
{
this.azureIoTHubClient.SetMethodHandlerAsync("ImageCapture", this.ImageUpdateHandler, null);
}
catch (Exception ex)
{
this.logging.LogMessage("Azure IoT Hub client ImageCapture SetMethodHandlerAsync failed " + ex.Message, LoggingLevel.Error);
return;
}
#endregion
#region Wire up command handler for device reboot request
try
{
this.azureIoTHubClient.SetMethodHandlerAsync("DeviceReboot", this.DeviceRebootAsync, null);
}
catch (Exception ex)
{
this.logging.LogMessage("Azure IoT Hub client DeviceReboot SetMethodHandlerAsync failed " + ex.Message, LoggingLevel.Error);
return;
}
#endregion
this.imageUpdatetimer = new Timer(this.ImageUpdateTimerCallback, null, imageUpdateDue, imageUpdatePeriod);
this.logging.LogEvent("Application startup completed");
// enable task to continue running in background
this.backgroundTaskDeferral = taskInstance.GetDeferral();
}
public void Run(IBackgroundTaskInstance taskInstance)
{
try
{
bme280Sensor = new BME280(0x76);
}
catch (Exception ex)
{
Debug.WriteLine($"BME280 Initialisation failed:{ex.Message}");
return;
}
try
{
azureIoTHubClient = DeviceClient.CreateFromConnectionString(AzureIoTHubConnectionString, TransportType.Mqtt);
}
catch (Exception ex)
{
Debug.WriteLine($"CreateFromConnectionString failed:{ex.Message}");
return;
}
try
{
azureIoTHubClient.SetMethodHandlerAsync("RestartDevice", RestartAsync, null);
}
catch (Exception ex)
{
Debug.WriteLine($"Azure IoT Hub device Restart method handler configuration failed:{ex.Message}");
return;
}
try
{
TwinCollection reportedProperties;
reportedProperties = new TwinCollection();
// This is from the OS
reportedProperties["Timezone"] = TimeZoneSettings.CurrentTimeZoneDisplayName;
reportedProperties["OSVersion"] = Environment.OSVersion.VersionString;
reportedProperties["MachineName"] = Environment.MachineName;
// This is from the application manifest
Package package = Package.Current;
PackageId packageId = package.Id;
PackageVersion version = packageId.Version;
reportedProperties["ApplicationDisplayName"] = package.DisplayName;
reportedProperties["ApplicationName"] = packageId.Name;
reportedProperties["ApplicationVersion"] = string.Format($"{version.Major}.{version.Minor}.{version.Build}.{version.Revision}");
// Unique identifier from the hardware
SystemIdentificationInfo systemIdentificationInfo = SystemIdentification.GetSystemIdForPublisher();
using (DataReader reader = DataReader.FromBuffer(systemIdentificationInfo.Id))
{
byte[] bytes = new byte[systemIdentificationInfo.Id.Length];
reader.ReadBytes(bytes);
reportedProperties["SystemId"] = BitConverter.ToString(bytes);
}
azureIoTHubClient.UpdateReportedPropertiesAsync(reportedProperties).Wait();
}
catch (Exception ex)
{
Debug.Print($"Azure IoT Hub device twin configuration retrieval failed:{ex.Message}");
return;
}
try
{
deviceTwin = azureIoTHubClient.GetTwinAsync().Result;
}
catch (Exception ex)
{
Debug.WriteLine($"Azure IoT Hub device twin configuration retrieval failed:{ex.Message}");
return;
}
try
{
if (deviceTwin.Properties.Desired.Contains("TimerDue"))
{
timerDue = TimeSpan.Parse(deviceTwin.Properties.Desired["TimerDue"].ToString());
}
if (deviceTwin.Properties.Desired.Contains("TimerPeriod"))
{
timerPeriod = TimeSpan.Parse(deviceTwin.Properties.Desired["TimerPeriod"].ToString());
}
}
catch (Exception ex)
{
Debug.WriteLine($"Sensor due or period configuration retrieval failed using default:{ex.Message}");
return;
}
bme280InputPollingTimer = new Timer(SensorUpdateTimerCallback, null, timerDue, timerPeriod);
backgroundTaskDeferral = taskInstance.GetDeferral();
}
public void Run(IBackgroundTaskInstance taskInstance)
{
StorageFolder localFolder = ApplicationData.Current.LocalFolder;
try
{
// see if the configuration file is present if not copy minimal sample one from application directory
if (localFolder.TryGetItemAsync(ConfigurationFilename).AsTask().Result == null)
{
StorageFile templateConfigurationfile = Package.Current.InstalledLocation.GetFileAsync(ConfigurationFilename).AsTask().Result;
templateConfigurationfile.CopyAsync(localFolder, ConfigurationFilename).AsTask();
}
// Load the settings from configuration file exit application if missing or invalid
StorageFile file = localFolder.GetFileAsync(ConfigurationFilename).AsTask().Result;
applicationSettings = (JsonConvert.DeserializeObject <ApplicationSettings>(FileIO.ReadTextAsync(file).AsTask().Result));
}
catch (Exception ex)
{
this.logging.LogMessage("JSON configuration file load failed " + ex.Message, LoggingLevel.Error);
return;
}
// Log the Application build, shield information etc.
LoggingFields applicationBuildInformation = new LoggingFields();
#if DRAGINO
applicationBuildInformation.AddString("Shield", "DraginoLoRaGPSHat");
#endif
#if ELECROW
applicationBuildInformation.AddString("Shield", "ElecrowRFM95IoTBoard");
#endif
#if M2M
applicationBuildInformation.AddString("Shield", "M2M1ChannelLoRaWanGatewayShield");
#endif
#if ELECTRONIC_TRICKS
applicationBuildInformation.AddString("Shield", "ElectronicTricksLoRaLoRaWANShield");
#endif
#if UPUTRONICS_RPIZERO_CS0
applicationBuildInformation.AddString("Shield", "UputronicsPiZeroLoRaExpansionBoardCS0");
#endif
#if UPUTRONICS_RPIZERO_CS1
applicationBuildInformation.AddString("Shield", "UputronicsPiZeroLoRaExpansionBoardCS1");
#endif
#if UPUTRONICS_RPIPLUS_CS0
applicationBuildInformation.AddString("Shield", "UputronicsPiPlusLoRaExpansionBoardCS0");
#endif
#if UPUTRONICS_RPIPLUS_CS1
applicationBuildInformation.AddString("Shield", "UputronicsPiPlusLoRaExpansionBoardCS1");
#endif
#if ADAFRUIT_RADIO_BONNET
applicationBuildInformation.AddString("Shield", "AdafruitRadioBonnet");
#endif
#if CLOUD_DEVICE_BOND
applicationBuildInformation.AddString("Bond", "Supported");
#else
applicationBuildInformation.AddString("Bond", "NotSupported");
#endif
#if CLOUD_DEVICE_PUSH
applicationBuildInformation.AddString("Push", "Supported");
#else
applicationBuildInformation.AddString("Push", "NotSupported");
#endif
#if CLOUD_DEVICE_SEND
applicationBuildInformation.AddString("Send", "Supported");
#else
applicationBuildInformation.AddString("Send", "NotSupported");
#endif
#if PAYLOAD_TEXT
applicationBuildInformation.AddString("PayloadProcessor", "Text");
#endif
#if PAYLOAD_TEXT_COMA_SEPARATED_VALUES
applicationBuildInformation.AddString("PayloadProcessor", "ComaSeperatedValues");
#endif
#if PAYLOAD_BINARY_BINARY_CODED_DECIMAL
applicationBuildInformation.AddString("PayloadProcessor", "BinaryCodedDecimal");
#endif
#if PAYLOAD_BINARY_CAYENNE_LOW_POWER_PAYLOAD
applicationBuildInformation.AddString("PayloadProcessor", "CayenneLowPowerPayload");
#endif
applicationBuildInformation.AddString("Timezone", TimeZoneSettings.CurrentTimeZoneDisplayName);
applicationBuildInformation.AddString("OSVersion", Environment.OSVersion.VersionString);
applicationBuildInformation.AddString("MachineName", Environment.MachineName);
// This is from the application manifest
Package package = Package.Current;
PackageId packageId = package.Id;
PackageVersion version = packageId.Version;
applicationBuildInformation.AddString("ApplicationVersion", string.Format($"{version.Major}.{version.Minor}.{version.Build}.{version.Revision}"));
this.logging.LogEvent("Application starting", applicationBuildInformation, LoggingLevel.Information);
try
{
#if DRAGINO
rfm9XDevice = new Rfm9XDevice(ChipSelectPin.CS0, ChipSelectLine, ResetLine, InterruptLine);
#endif
#if M2M
rfm9XDevice = new Rfm9XDevice(ChipSelectPin.CS0, ChipSelectLine, ResetLine, InterruptLine);
#endif
#if ELECROW
rfm9XDevice = new Rfm9XDevice(ChipSelectPin.CS1, ResetLine, InterruptLine);
#endif
#if ELECTRONIC_TRICKS
rfm9XDevice = new Rfm9XDevice(ChipSelectPin.CS0, ResetLine, InterruptLine);
#endif
#if UPUTRONICS_RPIZERO_CS0
rfm9XDevice = new Rfm9XDevice(ChipSelectPin.CS0, InterruptLine);
#endif
#if UPUTRONICS_RPIZERO_CS1
rfm9XDevice = new Rfm9XDevice(ChipSelectPin.CS1, InterruptLine);
#endif
#if UPUTRONICS_RPIPLUS_CS0
rfm9XDevice = new Rfm9XDevice(ChipSelectPin.CS0, InterruptLine);
#endif
#if UPUTRONICS_RPIPLUS_CS1
rfm9XDevice = new Rfm9XDevice(ChipSelectPin.CS1, InterruptLine);
#endif
#if ADAFRUIT_RADIO_BONNET
rfm9XDevice = new Rfm9XDevice(ChipSelectPin.CS1, ResetLine, InterruptLine);
#endif
}
catch (Exception ex)
{
this.logging.LogMessage("Hardware initialisation failed " + ex.Message, LoggingLevel.Error);
return;
}
// Log the Azure connection string and associated settings
LoggingFields azureIoTHubSettings = new LoggingFields();
azureIoTHubSettings.AddString("DeviceConnectionString", this.applicationSettings.AzureIoTHubDeviceConnectionString);
azureIoTHubSettings.AddString("TransportType", this.applicationSettings.AzureIoTHubTransportType.ToString());
azureIoTHubSettings.AddString("SensorIDIsDeviceIDSensorID", this.applicationSettings.SensorIDIsDeviceIDSensorID.ToString());
this.logging.LogEvent("AzureIoTHub configuration", azureIoTHubSettings, LoggingLevel.Information);
// Connect the IoT hub first so we are ready for any messages
try
{
this.azureIoTHubClient = DeviceClient.CreateFromConnectionString(this.applicationSettings.AzureIoTHubDeviceConnectionString, this.applicationSettings.AzureIoTHubTransportType);
}
catch (Exception ex)
{
this.logging.LogMessage("IoT Hub connection failed " + ex.Message, LoggingLevel.Error);
return;
}
try
{
TwinCollection reportedProperties;
reportedProperties = new TwinCollection();
// This is from the OS
reportedProperties["Timezone"] = TimeZoneSettings.CurrentTimeZoneDisplayName;
reportedProperties["OSVersion"] = Environment.OSVersion.VersionString;
reportedProperties["MachineName"] = Environment.MachineName;
reportedProperties["ApplicationDisplayName"] = package.DisplayName;
reportedProperties["ApplicationName"] = packageId.Name;
reportedProperties["ApplicationVersion"] = string.Format($"{version.Major}.{version.Minor}.{version.Build}.{version.Revision}");
// Unique identifier from the hardware
SystemIdentificationInfo systemIdentificationInfo = SystemIdentification.GetSystemIdForPublisher();
using (DataReader reader = DataReader.FromBuffer(systemIdentificationInfo.Id))
{
byte[] bytes = new byte[systemIdentificationInfo.Id.Length];
reader.ReadBytes(bytes);
reportedProperties["SystemId"] = BitConverter.ToString(bytes);
}
azureIoTHubClient.UpdateReportedPropertiesAsync(reportedProperties).Wait();
}
catch (Exception ex)
{
this.logging.LogMessage("IoT Hub updating reported properties failed " + ex.Message, LoggingLevel.Error);
}
// Wire up the field gateway restart method handler
try
{
azureIoTHubClient.SetMethodHandlerAsync("Restart", RestartAsync, null);
}
catch (Exception ex)
{
this.logging.LogMessage("Azure IoT Hub Restart method handler setup failed " + ex.Message, LoggingLevel.Error);
return;
}
#if CLOUD_DEVICE_BOND
// Wire up the bond device method handler
try
{
azureIoTHubClient.SetMethodHandlerAsync("DeviceBond", this.DeviceBondAsync, null);
}
catch (Exception ex)
{
this.logging.LogMessage("Azure IoT Hub Device Bond method handler setup failed " + ex.Message, LoggingLevel.Error);
return;
}
#endif
#if CLOUD_DEVICE_PUSH
// Wire up the push message to device method handler
try
{
this.azureIoTHubClient.SetMethodHandlerAsync("DevicePush", this.DevicePushAsync, null);
}
catch (Exception ex)
{
this.logging.LogMessage("Azure IoT Hub DevicePush method handler setup failed " + ex.Message, LoggingLevel.Error);
return;
}
#endif
#if CLOUD_DEVICE_SEND
// Wire up the send message to device method handler
try
{
this.azureIoTHubClient.SetMethodHandlerAsync("DeviceSend", this.DeviceSendAsync, null);
}
catch (Exception ex)
{
this.logging.LogMessage("Azure IoT Hub client DeviceSend method handler setup failed " + ex.Message, LoggingLevel.Error);
return;
}
#endif
// Configure the LoRa module
rfm9XDevice.OnReceive += Rfm9XDevice_OnReceive;
rfm9XDevice.OnTransmit += Rfm9XDevice_OnTransmit;
rfm9XDevice.Initialise(this.applicationSettings.Frequency,
rxDoneignoreIfCrcMissing: true,
rxDoneignoreIfCrcInvalid: true,
paBoost: this.applicationSettings.PABoost, maxPower: this.applicationSettings.MaxPower, outputPower: this.applicationSettings.OutputPower,
ocpOn: this.applicationSettings.OCPOn, ocpTrim: this.applicationSettings.OCPTrim,
lnaGain: this.applicationSettings.LnaGain, lnaBoost: this.applicationSettings.LNABoost,
bandwidth: this.applicationSettings.Bandwidth, codingRate: this.applicationSettings.CodingRate, implicitHeaderModeOn: this.applicationSettings.ImplicitHeaderModeOn,
spreadingFactor: this.applicationSettings.SpreadingFactor,
rxPayloadCrcOn: true,
symbolTimeout: this.applicationSettings.SymbolTimeout,
preambleLength: this.applicationSettings.PreambleLength,
payloadLength: this.applicationSettings.PayloadLength,
payloadMaxLength: this.applicationSettings.PayloadMaxLength,
freqHoppingPeriod: this.applicationSettings.FreqHoppingPeriod,
lowDataRateOptimize: this.applicationSettings.LowDataRateOptimize,
ppmCorrection: this.applicationSettings.PpmCorrection,
detectionOptimize: this.applicationSettings.DetectionOptimize,
invertIQ: this.applicationSettings.InvertIQ,
detectionThreshold: this.applicationSettings.DetectionThreshold,
syncWord: this.applicationSettings.SyncWord
);
#if DEBUG
rfm9XDevice.RegisterDump();
#endif
rfm9XDevice.Receive(Encoding.UTF8.GetBytes(this.applicationSettings.Address));
LoggingFields loRaSettings = new LoggingFields();
loRaSettings.AddString("Address", this.applicationSettings.Address);
loRaSettings.AddDouble("Frequency", this.applicationSettings.Frequency);
loRaSettings.AddBoolean("PABoost", this.applicationSettings.PABoost);
loRaSettings.AddUInt8("MaxPower", this.applicationSettings.MaxPower);
loRaSettings.AddUInt8("OutputPower", this.applicationSettings.OutputPower);
loRaSettings.AddBoolean("OCPOn", this.applicationSettings.OCPOn);
loRaSettings.AddUInt8("OCPTrim", this.applicationSettings.OCPTrim);
loRaSettings.AddString("LnaGain", this.applicationSettings.LnaGain.ToString());
loRaSettings.AddBoolean("lnaBoost", this.applicationSettings.LNABoost);
loRaSettings.AddString("codingRate", this.applicationSettings.CodingRate.ToString());
loRaSettings.AddString("implicitHeaderModeOn", applicationSettings.ImplicitHeaderModeOn.ToString());
loRaSettings.AddString("spreadingFactor", this.applicationSettings.SpreadingFactor.ToString());
loRaSettings.AddBoolean("rxPayloadCrcOn", true);
loRaSettings.AddUInt8("symbolTimeout", this.applicationSettings.SymbolTimeout);
loRaSettings.AddUInt8("preambleLength", this.applicationSettings.PreambleLength);
loRaSettings.AddUInt8("payloadLength", this.applicationSettings.PayloadLength);
loRaSettings.AddUInt8("payloadMaxLength", this.applicationSettings.PayloadMaxLength);
loRaSettings.AddUInt8("freqHoppingPeriod", this.applicationSettings.FreqHoppingPeriod);
loRaSettings.AddBoolean("lowDataRateOptimize", this.applicationSettings.LowDataRateOptimize);
loRaSettings.AddUInt8("ppmCorrection", this.applicationSettings.PpmCorrection);
loRaSettings.AddString("detectionOptimize", this.applicationSettings.DetectionOptimize.ToString());
loRaSettings.AddBoolean("invertIQ", this.applicationSettings.InvertIQ);
loRaSettings.AddString("detectionThreshold", this.applicationSettings.DetectionThreshold.ToString());
loRaSettings.AddUInt8("SyncWord", this.applicationSettings.SyncWord);
this.logging.LogEvent("LoRa configuration", loRaSettings, LoggingLevel.Information);
this.deferral = taskInstance.GetDeferral();
}
public void Run(IBackgroundTaskInstance taskInstance)
{
try
{
bme280Sensor = new BME280(0x76);
}
catch (Exception ex)
{
Debug.WriteLine($"BME280 Initialisation failed:{ex.Message}");
return;
}
try
{
TpmDevice myDevice = new TpmDevice(0); // Use logical device 0 on the TPM
azureIoTHubUri = myDevice.GetHostName();
deviceId = myDevice.GetDeviceId();
sasToken = myDevice.GetSASToken((uint)sasTokenValidityPeriod.TotalSeconds);
sasTokenIssuedAtUtc = DateTime.UtcNow;
}
catch (Exception ex)
{
Debug.WriteLine($"TpmDevice.GetSASToken failed:{ex.Message}");
return;
}
try
{
azureIoTHubClient = DeviceClient.Create(azureIoTHubUri, AuthenticationMethodFactory.CreateAuthenticationWithToken(deviceId, sasToken), TransportType.Mqtt);
}
catch (Exception ex)
{
Debug.WriteLine($"DeviceClient.Create with TPM info failed:{ex.Message}");
return;
}
try
{
azureIoTHubClient.SetMethodHandlerAsync("Restart", RestartAsync, null);
}
catch (Exception ex)
{
Debug.WriteLine($"Azure IoT Hub device method handler configuration failed:{ex.Message}");
return;
}
try
{
TwinCollection reportedProperties;
reportedProperties = new TwinCollection();
// This is from the OS
reportedProperties["Timezone"] = TimeZoneSettings.CurrentTimeZoneDisplayName;
reportedProperties["OSVersion"] = Environment.OSVersion.VersionString;
reportedProperties["MachineName"] = Environment.MachineName;
// This is from the application manifest
Package package = Package.Current;
PackageId packageId = package.Id;
PackageVersion version = packageId.Version;
reportedProperties["ApplicationDisplayName"] = package.DisplayName;
reportedProperties["ApplicationName"] = packageId.Name;
reportedProperties["ApplicationVersion"] = string.Format($"{version.Major}.{version.Minor}.{version.Build}.{version.Revision}");
// Unique identifier from the hardware
SystemIdentificationInfo systemIdentificationInfo = SystemIdentification.GetSystemIdForPublisher();
using (DataReader reader = DataReader.FromBuffer(systemIdentificationInfo.Id))
{
byte[] bytes = new byte[systemIdentificationInfo.Id.Length];
reader.ReadBytes(bytes);
reportedProperties["SystemId"] = BitConverter.ToString(bytes);
}
azureIoTHubClient.UpdateReportedPropertiesAsync(reportedProperties).Wait();
}
catch (Exception ex)
{
Debug.Print($"Azure IoT Hub device twin configuration retrieval failed:{ex.Message}");
return;
}
try
{
deviceTwin = azureIoTHubClient.GetTwinAsync().Result;
}
catch (Exception ex)
{
Debug.WriteLine($"Azure IoT Hub device twin configuration retrieval failed:{ex.Message}");
return;
}
try
{
if (deviceTwin.Properties.Desired.Contains("TimerDue"))
{
timerDue = TimeSpan.Parse(deviceTwin.Properties.Desired["TimerDue"].ToString());
}
if (deviceTwin.Properties.Desired.Contains("TimerPeriod"))
{
timerPeriod = TimeSpan.Parse(deviceTwin.Properties.Desired["TimerPeriod"].ToString());
}
}
catch (Exception ex)
{
Debug.WriteLine($"Sensor due or period configuration retrieval failed using default:{ex.Message}");
return;
}
bme280InputPollingTimer = new Timer(SensorUpdateTimerCallback, null, timerDue, timerPeriod);
// enable task to continue running in background
backgroundTaskDeferral = taskInstance.GetDeferral();
}
public void Run(IBackgroundTaskInstance taskInstance)
{
var deviceId = "";
var deviceSettings = default(AutodiscoverResult);
CameraStatus cameraStatus = CameraStatus.NotInstalled;
GroveBaseHatStatus groveBaseHatStatus = GroveBaseHatStatus.NotInstalled;
#region Set up device autodiscovery
//keep autodiscovering until we get a connection string
while (string.IsNullOrEmpty(deviceSettings?.ConnectionString) == true)
{
try
{
deviceId = DeviceIdService.GetDeviceId();
deviceSettings = AutodiscoverService.GetDeviceSettings(deviceId);
LoggingService.Log($"Device settings retrieved for DeviceId:{deviceId}");
}
catch (Exception ex)
{
LoggingService.Error($"Autodiscovery failed", ex);
Thread.Sleep(30000);
}
}
#endregion
#region Set up IoT Hub Connection
try
{
azureIoTHubClient = DeviceClient.CreateFromConnectionString(deviceSettings.ConnectionString, TransportType.Mqtt);
}
catch (Exception ex)
{
LoggingService.Error($"Azure IoT Hub connection failed", ex);
//TODO: set up a way for this to retry instead of fail?
return;
}
#endregion
#region Report device startup
SendPayloadToIoTHub(new DeviceEvent()
{
ApplicationStarted = true
});
#endregion
#region Retrieve device twin
try
{
deviceTwin = azureIoTHubClient.GetTwinAsync().Result;
}
catch (Exception ex)
{
LoggingService.Error($"Azure IoT Hub device twin configuration retrieval failed", ex);
//TODO: set up a way for this to retry instead of fail?
return;
}
#endregion
#region Report device properties
try
{
TwinCollection reportedProperties;
reportedProperties = new TwinCollection();
// This is from the OS
reportedProperties["Timezone"] = TimeZoneSettings.CurrentTimeZoneDisplayName;
reportedProperties["OSVersion"] = Environment.OSVersion.VersionString;
reportedProperties["MachineName"] = Environment.MachineName;
// This is from the application manifest
Package package = Package.Current;
PackageId packageId = package.Id;
PackageVersion version = packageId.Version;
reportedProperties["ApplicationDisplayName"] = package.DisplayName;
reportedProperties["ApplicationName"] = packageId.Name;
reportedProperties["ApplicationVersion"] = string.Format($"{version.Major}.{version.Minor}.{version.Build}.{version.Revision}");
// Unique identifier from the hardware
SystemIdentificationInfo systemIdentificationInfo = SystemIdentification.GetSystemIdForPublisher();
using (DataReader reader = DataReader.FromBuffer(systemIdentificationInfo.Id))
{
byte[] bytes = new byte[systemIdentificationInfo.Id.Length];
reader.ReadBytes(bytes);
reportedProperties["SystemId"] = BitConverter.ToString(bytes);
}
azureIoTHubClient.UpdateReportedPropertiesAsync(reportedProperties).Wait();
}
catch (Exception ex)
{
LoggingService.Error($"Azure IoT Hub device twin configuration retrieval failed", ex);
//TODO: set up a way for this to retry instead of fail?
return;
}
#endregion
#region Wire up device reboot command handler
try
{
azureIoTHubClient.SetMethodHandlerAsync("Restart", RestartAsync, null);
}
catch (Exception ex)
{
LoggingService.Error($"Azure IoT Hub device method handler configuration failed", ex);
return;
}
#endregion
#region Set up Grove Base Hat for RPI if installed
if (deviceTwin.Properties.Desired.Contains("GroveBaseHatForRPIInstalled"))
{
groveBaseHatStatus = GroveBaseHatStatus.Installed;
try
{
if (deviceTwin.Properties.Desired["GroveBaseHatForRPIInstalled"].value == true)
{
GroveBaseHatAnalogPorts = new AnalogPorts();
GroveBaseHatAnalogPorts.Initialise();
LoggingService.Log($"Grove Base Hat for RPI Firmware version:{GroveBaseHatAnalogPorts.Version()}");
bme280Sensor = new BME280(0x76);
// Wire up the sensor update handler
azureIoTHubClient.SetMethodHandlerAsync("SensorUpdate", SensorUpdateAsync, deviceId);
// If the SensorUpdatePeriod greater than 0 start timer
int sensorUpdatePeriod = deviceTwin.Properties.Desired["SensorUpdatePeriod"].value;
LoggingService.Log($"Sensor update period:{sensorUpdatePeriod} seconds");
if (sensorUpdatePeriod > 0)
{
sensorUpdateTimer = new Timer(SensorUpdateTimerCallback, deviceId, SensorUpdateDuePeriod, new TimeSpan(0, 0, sensorUpdatePeriod));
groveBaseHatStatus = GroveBaseHatStatus.Automatic;
}
else
{
groveBaseHatStatus = GroveBaseHatStatus.Enabled;
}
}
}
catch (Exception ex)
{
LoggingService.Error($"Grove Base Hat for RPI sensor configuration failed", ex);
return;
}
}
SendPayloadToIoTHub(new DeviceStatus()
{
GroveBaseHatStatus = groveBaseHatStatus
});
#endregion
#region Set up Camera if installed
if (deviceTwin.Properties.Desired.Contains("CameraInstalled"))
{
cameraStatus = CameraStatus.Installed;
try
{
if (deviceTwin.Properties.Desired["CameraInstalled"].value == true)
{
mediaCapture = new MediaCapture();
mediaCapture.InitializeAsync().AsTask().Wait();
// Wire up the image update handler
azureIoTHubClient.SetMethodHandlerAsync("ImageUpdate", ImageUpdateAsync, deviceId);
// If the CameraUpdatePeriod greater than 0 start timer
int imageUpdatePeriod = deviceTwin.Properties.Desired["ImageUpdatePeriod"].value;
LoggingService.Log($"Image update period:{imageUpdatePeriod} seconds");
if (imageUpdatePeriod > 0)
{
ImageUpdatetimer = new Timer(ImageUpdateTimerCallback, deviceId, ImageUpdateDueDefault, new TimeSpan(0, 0, imageUpdatePeriod));
cameraStatus = CameraStatus.Automatic;
}
else
{
cameraStatus = CameraStatus.Enabled;
}
}
}
catch (Exception ex)
{
LoggingService.Error($"Image capture configuration failed", ex);
}
}
SendPayloadToIoTHub(new DeviceStatus()
{
CameraStatus = cameraStatus
});
#endregion
//enable task to continue running in background
backgroundTaskDeferral = taskInstance.GetDeferral();
}
