What can be geekier then an deep study of how you can wire interconnections on RS 232. This opened my eyes, i have only used max 3 of the possible connection schemes. so much new to try ;)
Ethernut RS-232 Primer. This practical guide should help to connect your PC to the RS-232 interface of your embedded system. Unfortunately, in many modern PCs the RS-232 ports had been omitted. In this case a USB to RS-232 bridge can be used. General information about the RS-232 interface is ...
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