02-02-2007 07:38 AM
02-02-2007 10:35 AM
I guess it's not perfect if you don't get any data.
You have an indicator for number of bytes read. Is it greater than 0? If it's not, then the reason the string is empty is because there was nothing in the serial port buffer to read. Is the micro constantly sending out data? Have you tried using Hyperterminal to read the micro. If it is constantly transmitting, then the Hyperterminal scree will just fill up as long as you are connected. If the micro requires you to first send a command to request data, then you need to do a VISA Write of that command before doing the read.