From: Dirk Behme <dirk.behme@googlemail.com>
To: Richard Copeman <richard.copeman@lauterbach.co.uk>
Cc: linux-omap-open-source@linux.omap.com
Subject: Re: OMAP5912 OSK & GPIO
Date: Wed, 24 May 2006 18:09:29 +0200 [thread overview]
Message-ID: <44748539.4030200@gmail.com> (raw)
In-Reply-To: <009d01c67f49$47f84170$642aa8c0@Buffy>
Richard Copeman wrote:
> Hi,
>
> Does anybody have any examples for configuring and using the GPIO pins?
> I'm trying to toggle GPIO7. I set the data direction bit to output and set
> the output pin register bit to high. I have not changed the default pin
> muxing, so I assume I should be getting a signal on pin L15, which according
> to my schematics is pin 25 on connector P12. I put a scope on there and
> don't see anything ;-(
Try to use GPIO framework. See for example
/arch/arm/mach-omap1/leds.c
/arch/arm/mach-omap1/leds-osk.c
#include <asm/arch/gpio.h>
#include <asm/arch/mux.h>
omap_cfg_reg(P18_1610_GPIO3); // request pin from pinmux,
depends on chip
if (omap_request_gpio(3) == 0) // request GPIO
omap_set_gpio_direction(3, 0); // set it to output
omap_set_gpio_dataout(3, 1); // set it
Regards
Dirk
prev parent reply other threads:[~2006-05-24 16:09 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20060523170002.3B4B88062C@linux.omap.com>
2006-05-24 15:46 ` OMAP5912 OSK & GPIO Richard Copeman
2006-05-24 16:09 ` Dirk Behme [this message]
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