View Source: RS232 - Waikato Linux Users Group

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[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].

[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).

Perry's helpful discovery for debugging serial connections:''''

    <verbatim>
    <Remosi> It doesn't matter what baud rate you choose, if it's not plugged in
    </verbatim>

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.

See http://www.camiresearch.com/Data_Com_Basics/RS232_standard.html for a history of the standard.

* [Pin outs|http://www.zytrax.com/tech/layer_1/cables/tech_rs232.htm]
* [More pin out docs|http://www.brainboxes.com/standards/index.asp]
* [A way for standardising RS232 cables/connectors|http://yost.com/Computers/RJ45-serial/]

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CategoryStandards

5 pages link to RS232:

Last edited on Saturday, July 23, 2005 1:59:21 pm by AristotlePagaltzis

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