private static async Task <MessageResponse> OnFruitMessageReceived(Message msg, object ctx)
{
AzureModule module = (AzureModule)ctx;
var msgBytes = msg.GetBytes();
var msgString = Encoding.UTF8.GetString(msgBytes);
Log.WriteLine("fruit msg received: '{0}'", msgString);
var fruitMsg = JsonConvert.DeserializeObject <FruitMessage>(msgString);
await module.ProcessFruitMessage(fruitMsg);
return(MessageResponse.Completed);
}
private async Task <MethodResponse> SetFruit(MethodRequest req, object context)
{
string data = Encoding.UTF8.GetString(req.Data);
Log.WriteLine("Direct Method SetFruit {0}", data);
var fruitMsg = JsonConvert.DeserializeObject <FruitMessage>(data);
AzureModule module = (AzureModule)context;
await module.ProcessFruitMessage(fruitMsg);
// Acknowlege the direct method call with a 200 success message
string result = "{\"result\":\"Executed direct method: " + req.Name + "\"}";
return(new MethodResponse(Encoding.UTF8.GetBytes(result), 200));
}
static async Task <int> MainAsync(string[] args)
{
Log.WriteLine("Starting async...");
var Options = new AppOptions();
Options.Parse(args);
Log.Enabled = !Options.Quiet;
Log.Verbose = Options.Verbose;
Log.WriteLine("arg parse complete...");
// TODO: Options.List
Dictionary <string, RGBColor> FruitColors = new Dictionary <string, RGBColor>()
{
{ "apple", Colors.Red },
{ "pear", Colors.Yellow },
{ "pen", Colors.Green },
{ "grapes", Colors.Blue },
{ "other", Colors.Black }
};
AzureConnection connection = null;
UARTDevice uart = null;
await Task.WhenAll(
Task.Run(async() => {
try {
if (!Options.Test)
{
Log.WriteLine("starting connection creation");
connection = await AzureConnection.CreateAzureConnectionAsync();
}
}
catch (Exception e)
{
Log.WriteLine("Main CreateAzureConnectionAsync exception {0}", e.ToString());
}
}),
Task.Run(async() =>
{
try
{
Log.WriteLine("creating UART device {0}", Options.DeviceName != null ? Options.DeviceName : "(default)");
uart = await UARTDevice.CreateUARTDeviceAsync(Options.DeviceName);
await uart.InitAsync();
Log.WriteLine("uart initialzed");
if (Options.Test)
{
Log.WriteLine("initiating test");
if (Options.TestMessage != null && Options.TestMessage.Length > 1)
{
await uart.TestAsync(Options.TestMessage);
}
else
{
await uart.TestAsync("Test");
}
Environment.Exit(2);
}
}
catch (Exception e)
{
Log.WriteLine("UART exception {0}", e.ToString());
}
}
)
);
try
{
string currentFruit = null;
Orientation currentOrientation = Orientation.Unknown;
AzureModule m = (AzureModule)connection.Module;
EventHandler <ConfigurationType> ConfigurationChangedHandler = async(object sender, ConfigurationType newConfiguration) =>
{
var module = (AzureModule)sender;
Log.WriteLine("updating UART_lcd config with {0}", newConfiguration.ToString());
//await gpio.UpdatePinConfigurationAsync(newConfiguration.GpioPins);
await Task.CompletedTask;
};
m.ConfigurationChanged += ConfigurationChangedHandler;
try
{
EventHandler <string> FruitChangedHandler = async(object sender, string fruit) =>
{
Log.WriteLine("fruit changed sent {0}", fruit.ToLower());
Log.WriteLine("current fruit {0}", currentFruit);
if (fruit.ToLower() != currentFruit)
{
currentFruit = fruit.ToLower();
Log.WriteLine("setting fruit to {0}", fruit.ToLower());
LCDMessage msg;
msg.bgcolor = currentOrientation == Orientation.UpsideDown ? Colors.White : FruitColors[currentFruit.ToLower()];
msg.clear = true;
msg.msg = currentFruit;
uart.QueueMessage(msg);
}
else
{
Log.WriteLine("fruit already correct -- skipping");
await Task.CompletedTask;
}
};
m.FruitChanged += FruitChangedHandler;
try
{
EventHandler <Orientation> OrientationChangedHandler = async(object sender, Orientation o) =>
{
Log.WriteLine("orientation changed sent {0}", o.ToString());
Log.WriteLine("current orientation {0}", currentOrientation);
if (o != currentOrientation)
{
currentOrientation = o;
Log.WriteLine("setting orientation to {0}", o.ToString());
LCDMessage msg;
msg.bgcolor = o == Orientation.UpsideDown ? Colors.White : FruitColors[currentFruit != null ? currentFruit.ToLower() : "other"];
msg.clear = false;
msg.msg = null;
uart.QueueMessage(msg);
}
else
{
Log.WriteLine("fruit already correct -- skipping");
await Task.CompletedTask;
}
};
m.OrientationChanged += OrientationChangedHandler;
try
{
await uart.SetBackgroundAsync(Colors.White);
await uart.WriteStringAsync("Loaded");
await connection.NotifyModuleLoadAsync();
Log.WriteLine("Initialization Complete. have connection and device. ");
Task.WaitAll(Task.Run(() =>
{
try
{
// TODO: implement ctl-c handler and cancellation token
for (; ;)
{
Log.WriteLine("{0} wait spin", Environment.TickCount);
Thread.Sleep(TimeSpan.FromSeconds(30));
}
}
catch (Exception e)
{
Log.WriteLine("wait spin exception {0}", e.ToString());
}
}));
}
finally
{
m.OrientationChanged -= OrientationChangedHandler;
}
}
finally
{
m.FruitChanged -= FruitChangedHandler;
}
}
finally
{
m.ConfigurationChanged -= ConfigurationChangedHandler;
}
} finally
{
uart.Dispose();
if (connection != null)
{
connection.Dispose();
}
}
return(0);
}