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Graham Best

Member Since 01 Jan 2014
Offline Last Active Feb 22 2014 07:40 AM

Topics I've Started

System.ArgumentException with Serial Port

20 February 2014 - 09:05 AM

I'm trying to open a serial port and I'm getting an exception. I'm using a Netduino 2 with 4.3 firmware and Visual Studio Professional 2012. I'm using a FTDI cable that I picked up from Amazon:


It shows up as COM port 5. I double checked to make sure that I wired the cable to the Netduino correctly:

FTDI cable (pin 1, GND) -> Netduino GND

FTDI cable (pin 4, TXD) -> Netduino pin 0

FTDI cable (pin 5, RXD) -> Netduino pin 1


I'm able to open COM port 5 successfully with HTerm 0.8.1 beta.


When I try to load the code on to the Netduino, I get the following error in a dialog box:


An unhandled exception of type 'System.ArgumentException' occurred in Microsoft.SPOT.Hardware.dll


The code is based on the Serial Communcation via USB Step by Step post that I found on this forum.


I've cut out the code that doesn't contribute to the problem. I'm not sure what I'm doing wrong...


Does anyone have any ideas?

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