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From the monthly archives: September 2015
We are pleased to present below all posts archived in 'September 2015'. If you still can't find what you are looking for, try using the search box.
A new version of Windows 10 IoT is available on Windows Dev Center. Version 5.x of SysInfo is now available on GitHub that addresses the OS changes in the web portal. This version has two versions of the commands in the JSON file. One for the new OS and one for the RTM version.
Version 5.0 Adds [Rename Device] and [Set Admin Password]. There are also some coding corrections for the generic [api] command.
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Version 4.x of SysInfo is now available on GitHub. T)his version has much improved JSON processing and includes additional commands Startapp, StopApp, Shutdown and Reboot. A customisable JSON file is used to list the app commands and their relative URLs.Update Version 4.5 has “Uninstall Package” command.
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This post shows (version 4.0) the JSON file that is loaded as start up and parsed to form a list of commands that is displayed in the left pane of the app’s UI
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Question:
I am using Visual Studio 2015 to create my Windows Universal
Application and when I build and deploy it, I can’t find it listed on device or
it is listed but with a GUID instead of the human readable name that I carefully
gave it. How can I fix this?
How can I see this problem?
The picture below shows the web access to a Raspberry Pi running
Windows 10 IoT Core. The highlighted item is the app that we will fix by giving
it a human readable name.
In Visual Studio, the Build output window shows:
1>Deployment complete (13982ms). Full package name:
"77fae4cd-630a-45ec-9927-a72b8129f477_1.0.0.0_arm__j932756y98c8a"
How can I fix this problem?
You can edit the Package Manifest file, Package.appxmanifest, to change the
Identity Name:
Original
<Identity
Name="77fae4cd-630a-45ec-9927-a72b8129f477"
Publisher="CN=bruce.eitman"
Version="1.0.0.0" />
Modi ...
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Building on my previous articles (Windows 10 IoT Core: Starting a Package on Raspberry Pi and Windows 10 IoT Core: Getting the MAC Address from Raspberry Pi) the following shows how to stop a running package.
We start with the function StopApp(), which can be called either of the following ways:
StopApp("PushButton", true);
StopApp("PushButton", false);
private async void StopApp(string appName, bool Force)
{
String FullName = await GetPackageFullName(appName);
byte[] toEncodeAsBytes = System.Text.ASCIIEncoding.ASCII.GetBytes(FullName);
string appName64 = System.Convert.ToBase64String(toEncodeAsBytes);
String URL = "http://localhost:8080/api/taskmanager/stop?" + (Force ? "?forcestop=true&" : "") + "package=" + appName64;
System.Diagnostics.Debug.WriteLine(URL);
StreamReader SR = await PostJsonStreamData(URL);
}
To stop the package ...
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Building on my previous articles (Windows 10 IoT Core: Starting a Package on Raspberry Pi and Windows 10 IoT Core: Getting the MAC Address from Raspberry Pi) the following functions will shutdown and reboot the Raspberry Pi running Windows 10 IoT Core.
private async void ShutdownComputer()
{
String URL = "http://localhost:8080/api/control/shutdown";
System.Diagnostics.Debug.WriteLine(URL);
StreamReader SR = await PostJsonStreamData(URL);
}
private async void RebootComputer()
{
String URL = "http://localhost:8080/api/control/reboot";
System.Diagnostics.Debug.WriteLine(URL);
StreamReader SR = await PostJsonStreamData(URL);
}
The function PostJsonStreamData() can be found in
Windows 10 IoT Core: Starting a Package on Raspberry Pi.
Copyright © 2015 – Bruce Eitman and Embedded101.com
All Rights Reserved
Just for fun, I thought that I would build on my previous article (Windows 10 IoT Core: Getting the MAC Address from Raspberry Pi) and this time use POST to send data to the web server. I decided on starting a package.
To start a package, we need a some information, this includes:
1. The URL, in the case of starting packages it is “api/taskmanager/start”
2. How to POST the app to start. We do this with the parameter “appid” which requires a Base 64 string
3. The name of the app – surprisingly this was the most challenging. This required that we get the Relative Package ID, which is a very odd name for the app, not a user friendly name.
I started with an function that handles the items above.
private async void StartApp( string appName )
{
...
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The Web Portal uses a number of JavaScript files that are embedded in it. The one listed here in full, WebRest.js, is used by a number of the API calls.
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This blog outlines the REST and JSON code used in the SysInfo Universal App that mimics the Web Portal to Windows 10 IoT devices. This portal is a web service running on the devices that permits examination of the aspects of a currently running system.
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A Universal Windows App that mimics the web portal to a Windows 10 IoT Core device. Makes use of the web portal through REST and uses JSON to process the response for display. Can get ipconfig, processes, installed app, default app, OS info etc… All in an app.
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