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w5uxh's Content

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#52927 First Project - Prototype - Industrial Control

Posted by w5uxh on 26 September 2013 - 12:23 PM in Project Showcase

Steve, thanks for the links.  I will dig through them and see if I can learn enough of the fundamentals to get started.

#52915 First Project - Prototype - Industrial Control

Posted by w5uxh on 26 September 2013 - 01:46 AM in Project Showcase

I would be interested in seeing your micro web server code as an example to help me figure out how to build a simple server that works with a web page containing text boxes where I can enter text and submit the contents to a server running on the Netduino Plus 2.


I have zero experience with HTTP/HTML etc. and have used google to find some sample code.  I have tested some very crude things using the web server example in the Getting Started with Netduino book as a starting point.  But some additional code with forms/text boxes etc. could be very helpful.


The specific thing I want to do is have two text boxes where I can enter an IP address in one and a PORT number in the other and then submit those items to the server.  I found a very crude way to send the contents of one box when I type something and hit the ENTER key, but the contents of the box are cleared in the process.  This will only be the first step in a project that will use those entries, but one small step at a time.

#52708 COM port pin assignments, NP2

Posted by w5uxh on 11 September 2013 - 05:54 PM in Netduino Plus 2 (and Netduino Plus 1)

Thanks for the quick response.  I marked this as answered because it does answer the specific question about mapping from COM ports to I/O pins.  I still wonder if there is a set of documentation for things like this, that relate software to hardware.

#52702 COM port pin assignments, NP2

Posted by w5uxh on 11 September 2013 - 02:18 PM in Netduino Plus 2 (and Netduino Plus 1)

Can anyone point me to documentation that identifies the mapping between device names like COM1 and COM2 etc. and the I/O pins of the Netduino Plus 2?


I can see in the schematic that D2/D3 are related to the chip USART2, and D7/D8 are related to the chip USART4, but I would guess there must be some specific documentation somewhere that tells me which pins are defined for COM1 and COM2?


In the Tech Specs, I also see the mapping between internal USARTs but it does not seem to agree with the schematic.  The Tech Specs say D2/D3 is UART2 and D7/D8 is UART3 (not UART4).  Perhaps I am getting confused looking back and forth.  But in some sample code I have found it appears I need to use COM1 type names.  I could use the scope and try to write code to wiggle pins for COM1 or COM2 but I hope there is some helpful documentation available for such things.


I have tried to search the forum and used general google searches but have not found this type of documentation so far.


Perhaps there are header files that provide a guide to such things?  I am new to the .NET environment so I am sure there are many fundamental pointers I still need to learn about.




#52211 2 netduinos / client-server pair?

Posted by w5uxh on 17 August 2013 - 06:41 PM in General Discussion

I have only just become familiar with the netduinos, and have a very basic question (I hope).  


I have a homebrew embedded device using a Teensy++ 2.0 module that I interface over a serial port to a Mac Mini.  I have just begun working with (learning) Visual Studio /.Net / C# in order to migrate my Mac app to Windows.


The intention is to then remotely connect a pair of these devices (CW "Morse Code" Keyboards) over the net so that the serial ports are functionally connected together.  i.e. data out of one device is seen as input to the other and vice versa.


If a pair of netduino plus 2 could be used instead of PCs on both ends, that would really be interesting.


Can anyone comment if the netduinos might be a reasonable way to go?


If I think this is practical, I will then start to study the netduino environment in earnest.






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