Jan Axelson has a new version of Serial Port Complete -- dealing with using RS232 485 in a USB world. Like all her other books it is highly readable, and there are examples on her web site -- www.lvr.com
Lots of stuff for working in the dot.net environment etc., etc.
if you don't want to write roll your own or use FTDI chips this is a great book to have.
(Make sure you get the Second Edition if you order it, however.)
Lots of stuff for working in the dot.net environment etc., etc.
if you don't want to write roll your own or use FTDI chips this is a great book to have.
(Make sure you get the Second Edition if you order it, however.)