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RS232 is a standard for serial connections. In theory there are two ends to a RS232 connection a [DTE] and a [DCE]. RS232 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. RS232 requires you to select a transmit/receieve rate called a baud rate. "Standard" PC's support up to 115200 baud. Almost everything defaults to 9600 (although not always). Perry's helpful discovery for debugging serial connections: <Remosi> It doesn't matter what baud rate you choose, if it's not plugged in See mouse(4) for an example of low level driver details, and see [HowToSerialHOWTO] 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/] ---- CategoryStandards
5 pages link to
RS232
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Dongle
DTE
DCE
mouse(4)
LPT