From: "arun c" <arun.edarath@gmail.com>
To: linux-omap-open-source@linux.omap.com
Subject: omap GPIO programming
Date: Wed, 24 Oct 2007 14:35:40 +0530 [thread overview]
Message-ID: <c656a4d20710240205h37ed0e13m2484fba021ecd889@mail.gmail.com> (raw)
Hi all,
I want to use GPIOs 87,142,140 in omap2430. I am using a custom kernel.
i wrote a kernel modules with the following API to use the 3 pins
1)omap_request_gpio
2)omap_set_gpio_direction
3)omap_set_gpio_dataout
4)omap_free_gpio
But i could able to write data only to GPIO 140. other GPIOs are not showing
any voltage changes to writing 0 or 1 to them.
Whether i have to set pin muxing or use any other kernel api to use
the GPIOS 142 and 87?? please help me.
Regards,
Arun
next reply other threads:[~2007-10-24 9:05 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-24 9:05 arun c [this message]
2007-10-26 0:24 ` omap GPIO programming Nishanth Menon
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