comport to i2c question

[emcn]

Hello,

I am using a com port on the arduino, not a serial, does this make a difference? or maybe the ftdi drivers used on the arduino treat this as a serial port...?

[JÞB]

Be a bit careful with the FTDI drivers.  Yes the do present the interface as if it was a native COM port however, there are some unusual effects that are caused by the USB to RS-232 layer differances. 

I reciently spent several days in VISA-land discovering some of these less obvious behaviors and published a compendium HERE of resources and a summary of my experience