ritchie

I had a look through the forums but I don't seem to be able to find any information regarding deploying via network, or running the application from SD.

What are our options for unattended upgrade in the field with a Netduino Plus? Do I need to hack on the bootloader (someone mentioned a bootloader with TCP support), or is there another direction I should be looking in?

Goals for this project:

* Update application via network (required).
* Update Netduino firmware via network (strongly recommended).
* Sending binary via some standard transport (strongly recommended).

Ideally I'd like all of this to work like a basic wireless router - embedded webpage, update firmware button, possibly ability to check the web for new firmware as a nicety.

Also it sure would be nice to be able to search the forum for "sd", but I can't figure out how to meet the minimum string length requirement for the search.

Starting points appreciated..

Hi, I'm trying to build a little networked sensor widget based around the Netduino Plus. If possible, I'd like to be a marginally good network citizen and keep my traffic to those clients who are interested, and multicasting seems a fair approach for this. So far I haven't had a lot of luck, however.

It appears as though NETMF supports setting up multicast group membership using a bunch of SetSocketOption() calls, something like the following:

multicastSocket.SetSocketOption( SocketOptionLevel.IP, SocketOptionName.MulticastInterface, (int) 0 );
multicastSocket.SetSocketOption( SocketOptionLevel.IP, SocketOptionName.AddMembership, new byte[ ] { 224, 5, 6, 7 } );
multicastSocket.SetSocketOption( SocketOptionLevel.IP, SocketOptionName.MulticastTimeToLive, 2 );

However, when I try any of these I get a first chance exception of type 'System.Net.Sockets.SocketException' in Microsoft.SPOT.Net.dll.

Any suggestions on where to start prodding to get this working? Is this a problem with LwIP or the Netduino firmware, or somewhere else entirely? I assume multicast works at some level within NETMF, as DPWS depends on it. However DPWS as a package is too big to deploy to the Netduino, so I can't really check it it works there and I've just got the magic incantations wrong.

Thanks for considering!