Messages in this thread | | | Date | Wed, 16 Feb 2005 16:24:17 +0100 | From | Robert Schwebel <> | Subject | Re: What is the purpose of GPIO pins. |
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On Tue, Feb 15, 2005 at 05:53:00PM +0530, krishna wrote: > NO, Sorry I wasn't clear. > I am asking about GPIO controllers used in HandHeld Devices.
Embedded CPUs usually have general purpose I/O pins for all kind of stuff; you can just use them as inputs (for example for reading keyboards), outputs (e.g. setting LEDs) or use them as interrupt sources with various properties (level, edge, ...).
Robert -- Dipl.-Ing. Robert Schwebel | http://www.pengutronix.de Pengutronix - Linux Solutions for Science and Industry Handelsregister: Amtsgericht Hildesheim, HRA 2686 Hannoversche Str. 2, 31134 Hildesheim, Germany Phone: +49-5121-206917-0 | Fax: +49-5121-206917-9 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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