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Annotated edit history of RS232 version 5, including all changes. View license author blame.
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5 AristotlePagaltzis 1 [RS232] is a standard for serial connections. It uses pin 7 for ground, and pins 2 and 3 for transmit and receive. Other pins are used for hardware flow control, Ring indication etc. In theory there are two ends to a [RS232] connection, a [DTE] and a [DCE].
1 PerryLorier 2
5 AristotlePagaltzis 3 [RS232] requires you to select a transmit/receieve rate called a baud rate. [PC]s commonly support up to 115200 baud. Almost everything defaults to 9600 (although not always).
1 PerryLorier 4
5 AristotlePagaltzis 5 Perry's helpful discovery for debugging serial connections:''''
1 PerryLorier 6
5 AristotlePagaltzis 7 <verbatim>
8 <Remosi> It doesn't matter what baud rate you choose, if it's not plugged in
9 </verbatim>
2 JohnMcPherson 10
5 AristotlePagaltzis 11 See mouse(4) for an example of low level driver details, and see the [Serial HOWTO | http://www.tldp.org/HOWTO/Serial-HOWTO.html] for a very detailed background and discussion.
3 StuartYeates 12
13 See http://www.camiresearch.com/Data_Com_Basics/RS232_standard.html for a history of the standard.
4 PerryLorier 14
15 * [Pin outs|http://www.zytrax.com/tech/layer_1/cables/tech_rs232.htm]
16 * [More pin out docs|http://www.brainboxes.com/standards/index.asp]
17 * [A way for standardising RS232 cables/connectors|http://yost.com/Computers/RJ45-serial/]
3 StuartYeates 18
19 ----
20 CategoryStandards