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From the monthly archives: September 2014

We are pleased to present below all posts archived in 'September 2014'. If you still can't find what you are looking for, try using the search box.

Internet of Things and the washing machine at Community Days 2014

This time another new and exciting experience as speaker … at Community Days 2014 in Rome with all Microsoft italian communitis !


For the first time, I had the honour to have a 
session with me “big” friend Valter Minute, from which you never stop learning something new. Of course, the topic was the Internet of Things and this time with a washing machine as protagonist !

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.Net Micro Framework : 4.3 SDK R2 Beta released with Visual Studio 2013 support and new look for the official web site !

News, news … news !

The waiting is over ! The first news of the new life of .Net Micro Framework have been announced publicly yesterday with the new SDK R2 Beta release for the 4.3 version.

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M2Mqtt Spy : Windows Store and Windows Phone companion app to “spy” MQTT traffic

M2Mqtt Spy is an application for analyzing MQTT traffic and it is based on M2Mqtt client (http://www.m2mqtt.net). With this application you can connect to an MQTT broker (local or remote) with following features : publish message on a specific topic (with QoS 0), subscribe to one or more topics, receive and show messages on topics.

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Power management on the Beaglebone part 2–Battery

In part one of this series I showed how to implement the “Power Key” to safely power up and shutdown the Beaglebone platform under Windows Embedded Compact 2013 or Windows Compact 7. To continue on the power management theme I will show how to implement the battery driver but first there are some hardware issues we need to take care of. It seems the hardware designers of the Beaglebone were thinking ahead in that they brought out all the needed connections to the PMIC (Power Management Integrated Circuit) for battery backed operation. The needed connections are shown as test points in this partial schematic: The full schematic is freely available from the BeagleBoard web site. The data sheet for the Texas Instruments PMIC is also available for download. As I have stated in my previous post, the TPS65217C PMIC has an integrated battery charger on board. In my case I am using a 1.75A/hr. Lithium-Ion (Li-ion) battery. A couple of the connections are quite obvious, Battery plus needs to go to TP5, Batt ...

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Windows Embedded Compact 2013 SDK Build Issue

eMVP ErwinZwart (GURUCE.com) has blogged on his site wrt a problem when attempting to build a WEC 2013 SDK.  http://guruce.com/blogpost/wec2013-gensdk-build-error You typically get a message such as: ------ Build started: Project: OSDesign10, Configuration: VAR-SOM-AM33 ARMV7 Release Platform Builder (_TGTCPU) ------ Starting Build: call "C:\Users\DAVIDJ~1\AppData\Local\Temp\PB\BuildSdks.bat" ============== Microsoft .NET Framework 4.x Full installed. "SET PRJ variables because IMGREGHIVE=1" Wince ARMV7 CEBASE VAR_SOM_AM33   Development Environment for DavidJones "C:\WINCE800\public\common\oak\bin\i386\BuildOutputFilter.exe" -- "C:\Windows\system32\cmd.exe" /d /c "call "C:\Users\DAVIDJ~1\AppData\Local\Temp\PB\BuildSdks.bat"" C:\WINCE800\build.log(3) : Warning: You have one or more CPU families to be included in the SDK that have missing or out-of-date headers and libraries. Make sure to build the following configurations: VAR-SOM-AM33 ...

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Community Days 2014 : “Internet of Things : my washing machine connected to the Internet ?”

 

 

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This time, with great honor, I will be among the speakers of the Community Days 2014 to be held September 23 to 25 in Rome, after I was there more times as attendee in the past.

The honor will be double, because I will have the session with my dear friend Valter Minute that I recognized as the "Maradona" of embedded systems.

Our session entitled "Internet of Things: my washing machine connected to the Internet?" will be completely dedicated to IoT starting from embedded systems (Microsoft based) to the possible solutions in the Cloud, including the future project "Reykjavik" based on Azure and presented at Build 2014; the title tells the truth, among other things, we will have as its protagonist a washing machine (toy) !

You can find all the information concerning the agenda of the sessions and logistics on the official website in addition to the registration form.

We look forward to this event every year will not disappoint the expectations of those who participate !

Power managment on the Beaglebone AM335x platform part 1

One thing I see often on poorly designed embedded systems is lack of a robust system wide power supply design. Quite often little thought is put in before hand on requirements for proper power sequencing. This is the fault of the system engineer who should understand all the issues but whom usually ends up pointing the finger for a faulty system at the hardware or software designer. And while the hardware issues can be obvious, things like out of spec regulators or switching power supplies that don't switch etc. some of the software issues can be much more subtle harder to detect. One that I have seen quite often is absolutely no regard for properly shutting down the system. Many times there is an off switch which kills all power but without ever informing the processor or OS ahead of time. Another design may force a reset on the processor and then power is cut. While the second example may be argued as preferred, both are examples of poor design.You may think that forcing a re ...

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Porting an ARM BSP from Compact 7 to Compact 2013 - 1

First in a series of blogs about porting a Compact 7 TI AM335X BSP to Compact 2013 using a SOM and a development board for the SOM as reference hardware for an industrial controller.

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M2Mqtt and GnatMQ … now on Windows 8.1 and Windows Phone 8.1 !!

      It seems that I was on vacation (given the lack of posts on my blog) and it's the truth ! Despite the holiday, I continued the development of the M2Mqtt project and today I am pleased to release the new version 3.6.0.0 with WinRT support !! I made some changes on networking layer (from Socket to StreamSocket), thread (from Thread to Task) and security but finally the first MQTT client for all .Net platforms today also works on tablets with Windows 8.1 and on smartphones with Windows Phone 8.1. The new project, added in a Visual Studio 2013 solution, is a "portable class library" that I used and tested in a Universal App. The same for the "brother" GnatMQ, now in version (Beta) 0.9.2.0, thanks to which we have an MQTT broker to run on tablet and smartphone with Windows 8.1 OS family. Of course I updated the Nuget package by adding the assemblies for WinRT. I hope I did something useful f ...

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