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mlsomers

Member Since 12 Sep 2013
Offline Last Active Feb 07 2016 12:55 AM
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Topics I've Started

NetMF Port for the Adafruit Motor/Stepper/Servo Shield (V1)

24 January 2016 - 09:47 PM

Has anyone tried to port the software for this shield:

https://www.adafruit.com/products/81

 

The C++ libs are on GitHub but I could not find any .Net port.

 

These shields are being sold with free shipping for a price lower than I could mail a package to my neighbour (2 euros at AliExpress for example).

 

I have bought a couple, but I'm a little reluctant to start writing a driver before making sure there isn't an existing one out there. I also haven't figured out exactly which pins are used with this design. At first glance it looks like the Digital pins 3 through 12 are in use, but reverse engineering the software might be easier and maybe also safer than trying to understand what's going on (especially with three black-box chips on the PCB).

 


NetMf bug? Assigning an array type (typeof(x[])) to an array entry

10 January 2016 - 01:49 AM

I'm using a NetDuino Plus, but this also happens in the emulator:

 

If I do this:

Type myType = typeof(object[]);

it works fine, so I can instantiate a typeof(object[]).

 

Also assigning a non array type to an array is working:

Type[] myTypes = new Type[] { typeof(object) };

No problem here, but... assign the first example to that array, or:

Type[] myArrayTypes = new Type[] { typeof(object[]) };

and I get:

 

#### Exception System.Exception - CLR_E_WRONG_TYPE (1) ####
#### Message:

#### ...

 

Also doing it indirectly gives the same result:

Type myType = typeof(object[]);
Type[] myArrayTypes = new Type[] { myType }; // boem!

I'll find a way to work around this somehow, maybe using the type name instead, but I'm sure this must be a bug in netmf? Or am I missing something?


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