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Beginning with .Net microcontrollers


#1

Hi;

I’ve only recently taken an interest in microcontrollers that support development using .Net.

I’m aware that the available systems are relatively few with just a handful of suppliers so I’m eager to get an idea of how GHI’s offerings compare with Netduino’s.

Are you competitors or is there just some overlap and you actually offer different overall solutions?

I’m particularly interested in microcontroller boards that include WiFi and allow me to use Socket IO in C#.

Any general info will be much appreciated.

Thanks


#2

@ Cray -

Not a direct answer but I have both. Like everything, each has it’s place. The cost is low enough to get one of each… (Well, all the goodies add up)


#3

Welcome to the forum.

To be able to guide you better, we would need some more info about your project.

I would go for GHI’s Cobra II Wifi, which is a powerful and sophisticated package with power-supply and wifi-module built in.


#4

Netduino competes with our cerbuino, which is our lowest end product. When comparing both, cerbuino has more software, like RLP to loaf naive code, support native graphics on N18 display and had gadgeteer sockets.


#5

@ Gus - I have said this before, but a comparison page is still missing! Add the netduino to be gentleman!


#6

@ njbuch - the new page is almost ready https://www.ghielectronics.com/catalog/comparison/297


#7

@ Gus - promising, remember to add your text descriptions (like the cebuino statement you just wrote.) a performance score would also be nice.


#8

We are far from done still.


#9

Thanks for these helpful and prompt replies gents, really helps. André - yes you’re correct I do of course mean .Net MF and I’m eager to get my hands on this soon.

What hardware do GHI offer for Bluetooth or NFC and what degree of support does .Net MF provide for these technologies?

Also what issues arise if I want use the latest release of .Net MF on these boards? Is it ‘just’ a matter of installing this into the board (presumably its held in Flash?) or are there other considerations?

Thanks again.

Cray


#10

Welcome to the forum.

Here aren2 options in the Gadgeteer format.

GHI’s classic Bluetooth offering https://www.ghielectronics.com/catalog/product/312

Here’s a forum members board available for purchase https://www.ghielectronics.com/catalog/product/312

If you feel inclined to use non-Gadgeteer and Arduino shields, you can use the first 3 of these to wire up your own:

https://www.ghielectronics.com/catalog/category/510


#11

I meant what kinds of issues arise if one tries to use a later version, what issues do GHI have to face when they consider upping their support? Regression testing no doubt, but are there technical limitations?


#12

I’m not sure what you’re getting at. The person/team that does the building of a firmware is the one that has to tackle those challenges. This task is “porting” the netmf codebase to a specific hardware platform. Then, their additional software layer is added - and in GHI’s case, their significant Premium libraries (closed source) are compiled into the firmware.

The framework version that your C#/VB code targets must match the framework version source that is used to build the firmware. With a 4.2 firmware (as all GHI’s offerings are, and excluding the community built 4.3 firmware for Cerberus) you can only target 4.2 framework in your app.

So if you wanted to use the latest framework, you would have to port the netmf core over to the device, work typically done by someone else; the only exception is the 4.3 community build of the Cerberus family firmware which you can use.

And just a further reminder, if you’re using Visual Studio 2012, you install the netmf4.3 SDK which is backward compatible with all the 4.x family frameworks. You then create your project and make sure it targets the correct framework version (for a current GHI board, 4.2).


#13

Thanks this is helpful. I was unclear on why GHI don’t (apparently) provide systems that work with .Net MF 4.3 - I think I understand that now.

I wasn’t aware that “Porting” was something a customer might tackle (I assumed GHI did that as they see fit for their own product needs) but it seems from what you say that we (anyone) could take the core software (CLR or whatever) and build test that to work against .Net MF 4.3 and then use that compiled runtime as the firmware on the mainboard.

Clearly GHI have already done a port for 4.1 and 4.2, so is a port to 4.3 something they plan to do eventually?

Thanks


#14

GHI will support 4.3, but not at a schedule that you can control or influence (and I don’t think they have talked publically about what that timeframe might be). There are still some outstanding known issues on the 4.2 builds so they are working on that before 4.3.

The netmf core software is open so anyone can take the porting kit and develop a port for a particular microcontroller. In the past that has been the remit of larger teams of people but there are more and more community-driven contributions - in particular the STM32F1 and F4 ports that Oberon/GHI have collectively worked on and opened to the public are great starting points on a family of processor that is expanding and very friendly for more enthusiast level work