From: Jon Hunter <jon-hunter@ti.com>
To: hong zhang <henryzhang62@yahoo.com>
Cc: linux-omap@vger.kernel.org
Subject: Re: gpio interrupt is not invoked on Panda board
Date: Fri, 1 Jul 2011 16:17:44 -0500 [thread overview]
Message-ID: <4E0E3978.9050805@ti.com> (raw)
In-Reply-To: <1309543835.48880.YahooMailClassic@web161712.mail.bf1.yahoo.com>
Hi Henry
On 7/1/2011 1:10 PM, hong zhang wrote:
> List,
>
> I try to get gpio_191 ping interrupted on panda but never succeeded. What I do is
>
> 1. set 0x410b on dpm_emu19 register to enable interrupt and wakeup
> on gpio_191
> 2. set bit 31 to 1 on GPIO_IRQSTATUS_SET_0 register at 0x4805d034
> 3. set bit 31 to 1 on GPIO_IRQWAKEN_0 register at 0x4805d044
> 4. set bit 31 to 0 on GPIO_OE register at 0x4805d134 (output)
> 5. set bit 31 to 1 on GPIO_SETDATAOUT register at 0x4805d194
>
> Then I expect I should see interrupt on GPIO_IRQSTATUS_0 register at 0x4805d02c. But nothing happens for both output and input (put pin on ground or 1,8v).
You will not get an interrupt if you are configuring the gpio as an
output (GPIO_OE[31] = 0).
Jon
next prev parent reply other threads:[~2011-07-01 21:17 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-01 18:10 gpio interrupt is not invoked on Panda board hong zhang
2011-07-01 21:17 ` Jon Hunter [this message]
2011-07-01 23:15 ` hong zhang
2011-07-04 5:47 ` Varadarajan, Charulatha
2011-07-04 17:20 ` hong zhang
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