From: Robert Schwebel <robert@schwebel.de>
To: krishna <krishna.c@globaledgesoft.com>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: What is the purpose of GPIO pins.
Date: Wed, 16 Feb 2005 16:24:17 +0100 [thread overview]
Message-ID: <20050216152417.GF1722@pengutronix.de> (raw)
In-Reply-To: <4211E9A4.6010908@globaledgesoft.com>
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
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prev parent reply other threads:[~2005-02-16 15:24 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-15 11:59 What is the purpose of GPIO pins krishna
2005-02-15 12:19 ` linux-os
2005-02-15 12:23 ` krishna
2005-02-16 15:24 ` Robert Schwebel [this message]
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