Thanks to everyone who has applied to my prior posts. I currently working trying to use all 3 UARTs on the gumstix for RS-232 communications. I've made the appropriate kernel changes and tested all the ports using a pinto board, sparkfun logic level converter, and a TTL to RS-232 shifter.
Does anyone happen to know of a level shifter that handles 3 port, or an TTL-RS232 shifter that handles 3 devices (possibly at 1.8V)? Space is a concern for my application, so minimal use of additional components is a priority. Thanks in advance.