Edward's Content

#17163 Beta driver for .NET MF 4.2 RC3+

Posted by Edward on 27 August 2011 - 08:09 PM in Beta Firmware and Drivers

After one false start with the symbols but the non-debug build of the driver still loaded I think I've captured an informative debug trace of the driver issue. I've put the info up on the work item CodePlex.

#17409 Beta driver for .NET MF 4.2 RC3+

Posted by Edward on 01 September 2011 - 08:59 PM in Beta Firmware and Drivers

P.S. Does anyone have a simple project (something along the lines of "Hello world" or maybe a little more sophisticated) which regularly causes a BSOD?

Chris

My experience is that the problem is strongly exacerbated by the size of the project. I've a project that has a deployment size of 57k and it'll cause the BSOD on the second deployment; every time. I'm on Win7 x64 and Netduino Plus. So to get something reproducible just write "Hello World" and link in a buch of extra libraries.

The debug stack trace I posted pretty clearly shows a recusive behaviour around the operation completion continuation function. I also see that there's a check in of the driver code for RC2 that may be an attempt to fix this by putting a monitor on the completion.

#17415 Beta driver for .NET MF 4.2 RC3+

Posted by Edward on 01 September 2011 - 11:45 PM in Beta Firmware and Drivers

Are you sending large amounts of debug info from the device by any chance?

It'd be nice to be able to get to the point where I could look at the debug info ;->

But no, with that project size the steps are:
Boot windows
Start VS
Deploy project
Click stop debug
Deploy project
Deploy hangs
Reset NP -> BSOD (or 50% of the time straight to BIOS)

#17422 Beta driver for .NET MF 4.2 RC3+

Posted by Edward on 02 September 2011 - 02:58 AM in Beta Firmware and Drivers

In the app which is currently on your Netduino, is it writing out lots of Debug info?

Nope - it just prints an "I'm alive" message every 10 seconds from the main thread.
The app is a little HTTP server hosting a SilverLight client, so it's just sitting idle waiting for a connect.

#17575 Netduino Plus Firmware v4.2.0 RC1

Posted by Edward on 05 September 2011 - 01:11 PM in Beta Firmware and Drivers

I bumped into this too. The regex library is a port of an old (but worthy) Apache Java library (Jakarta)to C# (it's not native). It doesn't support quite the same syntax as the desktop .Net regex library (which is a little irritating). One thing that's not implemented is named capture groups af far as I'm aware. There are also some differences on what characters have to be escaped. I ended up downloading the library source and compiling it to find this out. Maybe these inconsistencies are worthy of a 'bug' on CodePlex. For me the performance from a non-native library and its cosiderable memory footprint made me look for simpler techniques for what I was trying to achieve.

#18497 Beta driver for .NET MF 4.2 RC3+

Posted by Edward on 27 September 2011 - 02:07 PM in Beta Firmware and Drivers

What's happening on this? The Codeplex status is "Several suggestions are in the hands of SecretLabs to produce a new firmware image" For me the problem happens alot with ND+ and 4.2. But it also happens on 4.1 and other targets e.g. GHI Cobra albeit a lot less frequently. Feels luke the ball is in the wrong court to me (hope that translates).

#21139 Website homepage

Posted by Edward on 30 November 2011 - 12:44 AM in General Discussion

Correct me if I'm being 'blind' but it seems strange to me that there's no links to info on the Plus or the Mini from the netduino.com homepage.

#25955 What's going on with the >= operator?

Posted by Edward on 25 March 2012 - 06:04 AM in Netduino Plus 2 (and Netduino Plus 1)

Where I struggled was with the base. I needed to use the Natural Logarithm base of 2.718281828 to get the right result, so:
Log(tempBead.Read(), 2.718281828);

That base constant 'e' is in the math library as System.Math.E

HTH

#26112 Getting Started with...

Posted by Edward on 29 March 2012 - 08:40 PM in General Discussion

Yay! I got my copy of "Getting Started with Netduino" today. Pre-ordered on amazon.co.uk 3rd August 2011; delivered 29th March 2012. It's a great read. I know all of this stuff already; I made my purchase mainly to show support for the project and to see how it's being presented to new adopters. Having seen it, I'm sure they will be enthused. It's a well paced and structured tutorial. Good job Chris!

#26228 Redacted 00101100

Posted by Edward on 01 April 2012 - 09:33 AM in General Discussion

Today it says "need more input". I hope tomorrow it says "need more RAM" ;->

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