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Member Since 19 Jul 2011
Offline Last Active Aug 18 2013 09:33 AM

Topics I've Started

COM port availability/extensibility

30 July 2011 - 02:20 PM

Hi all! I am getting very excited with all this netDuino stuff and I have a list of shields that I want to buy in order to finish my project. The problem is that I want to buy 2 shields that use the COM port and at the same time use another 2 COM ports for bridging 2 devices. So, I need to have access to 4 COM ports! Is that possible? Is there any COM port extension shield for the netDuino?

Another COM port problem

20 July 2011 - 10:32 PM

Hi all! I am a noob at netduino but have quite an expertise in C# and currently I am porting a small project that was working on my PC to the netduino. This project makes my PC communicate with a device using a Prolific USB-to-COM port; specifically, request some info and get back results. The problem is that upon compiling this 20-line code to netduino, the device I want to "talk" to does not respond. Here is some more info: - I use the CuteDigi COM shield which uses pin 0 and pin 1 of the netduino (so COM1 is used). - COM initialization is at 57600, 8, N, 1. - Netduino sends the appropriate byte sequence to the device and the device does NOT answer. - PC sends the appropriate byte sequence to the device and the device answers back. - PC and Netduino can send info to each other when connected with no problems. - netduino firmware version is What am I missing here? Any help would be gladly appreciated... PS1: The device I connect to does not respond if it gets a wrong byte sequence or, of course, if it gets no bytes at all... PS2: Could this be voltage related? Does the netduino work on 5V signals or 3.3V signals for COM port operation?

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