Recent blog entries

Visual Studio Target Problem: Exception 0x89721500 (Solved)

Problem:

I lost the ability to set the device Target so can’t download a UWP app to a Windows Phone or IoT-Core device.

In App Project Debug Settings I got an error:

An error occurred trying to load the page.

Exception from HRESULT: 0x89721500

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XAML Layout for a Dictionary–Part 2

The previous post outlined in an XAML UI using a ListView how to display a List of instances of a class of public properties using data binding. Layout and padding issues were examined as well as binding to a dictionary of objects. This article covers programmatically adding elements of a collection to an XAML UI.

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XAML Layout for a Dictionary–Part 1

I had a Dictionary of values that I wanted to display in an XAML UI as part of a UWP app. My initial foray was to use a ListView with a binding to the dictionary  ListView.ItemTemplate/DataTemplate. The dictionary was then bound to the ListView’s ItemsSource. The problem with the ListView is that there is a lot of padding between items vertically and within items.I wanted to compact the rows of data vertically though as if I had manually placed each dictionary item (key and values) in a grid of rows of TextBlocks in a row (one row for each item). This article discusses my trials and tribulations with this issue and includes my final solution.

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Build 2017 Sydney

The last leg, of 8, of the world Build tour was held in Sydney this week. What can I say .. it was great. A lot of new and coming Creators features were covered, Insight into the latest Windows technologies was dished out. Here are some of the highlights and summary links.

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Silverlight is Dead. Long live UWP!

 

In a discussion about the demise of Silverlight, I came across this succinct dichotomy (as a diagram) of “Modern” apps in the Windows Mobile context.

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Bluetooth Low Energy on Windows 10 Creators Edition and a RPi3 issue.

Several months ago I published a UWP app on GitHub that interacted with a Texas Instruments CC2650STK  SensorTag using the Bluetooth Low Energy (BLE) API.  It was based upon a previous Microsoft sample UWP app for interacting with an earlier TI SensorTag. Whilst the new app ran well on the Windows 10  Desktop and Windows 10 Phone, it was found to be erratic on the Raspberry Pi3 running Windows 10 IoT-Core.. working well some times but errant other times. Windows 10 Creators Edition added a key feature to BLE, namely the ability to connect to a device that is advertising without being paired. This blog examines the erratic nature of the RPi3 with BLE and investigates whether this is solved with the Creators Edition. In so do a comparison is made between between BLE Paired and Unpaired connectivity in the UWP app development context..

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Is "IoT Security" an Oxymoron?

Last night I attended a Meetup on Cyber Security with a IoT context sponsored by Kerpashky Lab. It was a great night with hosted by a female with three well credentialed females as the guest panelists. There was a interesting presentation on Cyber Security followed by a Q&A with the panel. This rhetorical question occurred to me.

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Visual Studio 2017 support for Google Android Things

Well it looks like Google is getting into the IoT business also. Microsoft has its IoT core platform that is basically a slimmed down version of its desktop Windows 10 offering targeted to the embedded Internet of Things market. Visual Studio 2015/2017 supports development for Windows desktop as well as IoT core using its universal platform strategy. Also included in VS is support for mobile phone development using Xamarin, which Microsoft acquired awhile back. Visual Studio through Xamarin has the ability write and debug IoS and Android mobile running on tablets and phones. Now that Google is in the IoT game also it will be interesting to see how their strategy pans out. Google, as expected, is leveraging all the Androids frameworks and middleware that makes sense for the IoT market. It is also extending libraries adding I2C, GPIO and UART interfaces to support user supplied hardware. As a simple test I built and tried to deploy a simple "hello world" Android mobile app, built with Visual ...

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Azure Mobile service to monitor server temperature

At THEORIS our server room temperature is controlled by an A/C unit, but we are facing two issues: 
1- In summer the room temperature may go above 30°C, requiring extra cooling capacity.
2- In case of a power cut the A/C does not restart automatically, a user action is required.

We solved these two issues with a connected IoT solution based on an ICOP Educake and Azure Mobile Service.

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Win 10 Phone running hot – Short battery life: Solution?

My Lumia 930, on the Windows Insider Fast Track started running hot and flattening the battery in about 4 hours, before Christmas after the most recent update.Sad smileThumbs down

I provided feedback but could not find a solution.  Final solution I found that worked was to do a a Factory Reset. I backed up my data first. On reset I let it reinstall my previous apps that were installed etc. SmileThumbs up

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Windows Embedded Compact 7

The Windows Embedded Compact 7 (Compact 7) getting started series is created to provide simple and easy to follow information to help academic, hobbyist and commercial developers to learn and engage in Compact 7 development.

***This is a series of 9 articles, with additional supplements, that cover the following subjects:

  • Development environment
  • OS design
  • Managed code application
  • Native code application
  • Silverlight for Windows Embedded application
  • SQL Compact database application
  • Debug and remote tools
  • More..

http://www.embedded101.com/compact7.aspx

Embedded101 Articles & Application Notes

Apr10CEDriverWiz Version 2.00: Using the Wizard
Created by David Jones on 4/10/2013 8:56:42 AM

  Book Links: ...
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Apr10CEDriverWiz Version 2.00: An Example
Created by David Jones on 4/10/2013 7:28:32 AM

Book Links: ...
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Apr09Installing CEDriverWiz for Visual Studio
Created by David Jones on 4/9/2013 8:41:27 AM

Install Visual Studio 2012/2008/2005 (depending upon your version of CE/Compact) and all of t...
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Apr01CEDriverWiz V2.00: About this release
Created by David Jones on 4/1/2013 7:33:39 AM

This brings the wizard in line with our Wrox book: "Professional Windows Embedded Compact 7" . ...
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Apr01CEDriverWiz Version 2.00 User Manual
Created by David Jones on 4/1/2013 6:40:34 AM

Index
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May15Configure Flash Storage to Launch Compact 7 OS Runtime with DiskPrep
Created by Sam Phung on 5/15/2012 8:41:50 PM

The DiskPrep powertoy is a useful utility to configure different type of flash storage to launch Wi...
Read More..


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