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Member Since 30 Aug 2011
Offline Last Active Apr 10 2012 11:40 AM

Topics I've Started

What should I do?

04 October 2011 - 02:15 PM

I have been working a project which basically has to be all things to all men - Serial Comms, lots of I/O, Internet access, SD card. We started off with a standard Arduino and Ethernet shield, but this did not have the "buffered" UART - useful Serial comms. We looked at a Chipkit Max32, but whilst it is advertised with Ethernet it requires a second shield the Arduino Ethernet does not work). We also tried out a PIC development board (but I am not an electronic engineer and that made my head hurt too much) We then looked at the Netduino Plus- on the face of it, it has everything - great price, buffered UART - Ethernet, SD Card, plenty of I/O, and it uses - NET MF, as we have lot of .Net code already - we thought we were in business. The prototype was built and I started coding. This is when it started to fall apart - to use my mother's express it was like trying to squeeze a quart into a pint pot (too much into too small a space). I would get parts of it going on their own, merge it together and it would stop working sometimes with obvious memory related errors - sometimes it would just die. It has become very frustrating. So to my question - what should I do? 1. Are there tricks I can use to make the use of memory very efficient so I can use Netduino? 2. Go back to one of the other platforms - if so which one? 3. Try a new platform - which one? 4. Go for a bespoke solution rather than off the shelf components?

Over ambitious ???

21 September 2011 - 08:45 AM

Hi, I have a N+ on to which I am deploying a 19K application. It is flashed with RC 4.2 This uses the standard assembies plus Secretlabs.NetMF.IO assembly. It drives a LCD via SPI, a small webserver based on threaded sockets, and an SD card for data storage. I am getting memory allocation errors. "Failed allocation for 343 blocks 4416 bytes. A first chance exception of type System.Exception occurred". My question is: am I being over ambitious with N+? Secondly should I use static or dynamic classes? I have been experimenting with dynamic classes, hoping that the garbage collector will help me out.

Post Reflash RC4.2

20 September 2011 - 10:21 AM

Hi, I have just upgraded to RC 4.2 and .NET MF 4.2 beta. Just tried rebuilding/deploying Blinky to check everything's working. The build works fine but there a link dependancies on the Assemblies between Secretlabs.NETMF.Hardware.* and Microsoft.Spot.Hardware and mscorlib. Is there an upgrade to the Secretlabs assemblies I am missing? Thanks Eric Update: Tried changing Target framework to 4.1 result is unable to deploy mscorlib or satellite assemblies so back to 4.2 where I get a link failure: Assembles references can't be resolved Update: Folowed this thread http://forums.netdui...k-v42-sdk-beta/ - I needed the beta SDK which was n't mentioned on another thread for the upgrade. It is a shame that website - does not have all the possible downloads on the downloads page and the hardware page does not have all the hardware - where is the N+ on the hardware page???????? Update: Depending on what you are doing will also be useful http://forums.netdui...mfiodll-please/

Slow death

14 September 2011 - 12:31 PM

Hi, I am using a N+ to do a variety of tasks (including a threaded process using sockets). Watching the debugger after a while it slows down and grinds to a halt with no exceptions. I have tried using Debug.EnableGCMessages(true)- at start - bytes used 30888 available 20088, when it stops bytes used 31872, available 19104 I am using build N+ regards Eric

Deploying Microsoft.SPOT.TinyCore

05 September 2011 - 01:19 PM

I have just been trying to use the Microsoft.SPOT.TinyCore Assembly. I can build my project but the deployment just hangs. Remove the assembly and it deploys. Any ideas? A follow-up thought: Are there some MF assemblies that don't work with Netduinos? Thanks Eric

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