Re: GPIO driver for pxa270

There's a single IRQ for all the GPIOs (more or less)
and that's where the matter may get complex.

<princyfrancis@xxxxxxxxx> wrote in message
news:1167302635.401737.79380@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hi,
in pxa 270,there is a gpio controller.For making a gpio pin interrupt
enable ,we should register its irq to isr.Isn't it.So i think there
will be an irq for gpio controller.But i don't find it .
Is there any need to set anything in interrupt controller register?
please help me
princyfrancis@xxxxxxxxx wrote:
Hi,
Onething i know that we should register an interrupt.For that we should
implement an isr.with some irqs.how can we implement interrupt
registration.can we add something likeSYSINTR_GPIO.
please reply me.
princy wrote:
Hi SAR i don't know "the technique of accessing the physical address
location
of GPIO".I am a new in driver development.I didn't worked in hardware
side.So
don't know how to read the register ,configure the pins.Can you please
help
me..i will grateful to u
"SAR" wrote:

For the PXA270 Architecture, you can find the data*** and look up
the
address locations for the GPIO registers. The few that I remember
are AFR,
DIR, READ and WRITE. Now these addresses are physical address
locations. If
you know the technique of accessing the physical address locations,
then
accessing GPIO is very easy.
--
SAR,
Windows CE/Mobile Developer.


"K. S. Huang" wrote:

Yes, so that's what I mean you need to leverage the BSP from other
Windows
CE platform.
<princyfrancis@xxxxxxxxx>
???????:1166431378.838815.250630@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
thank u huang..
i am using wince5.0 as os and mainstone II bsp(pxa270
processor).
there is no specific diver for gpio configuration.
K. S. Huang wrote:
If you have OMAP 730/850/1030 series BSP (which is shipped with
Windows
Mobile AK), the FSample. GSample dose provide a GPIO framework
for common
use.
Otherwise, you may want to refer to the H4Sample BSP of
Yamazaki which
provide a SPI and I2C simply bus driver and could be leverage
as the GPIO
driver in your own BSP.

<princyfrancis@xxxxxxxxx>

???????:1166416578.317792.223040@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hi all,
I want to write a gpio driver for pxa270 in wince.My
requirement is to
monitor and read the status of a GPIO pin.That gpio pin is
named as
spare input.That gpio pin changes its status whenever there
is a pulse
comes.So i think the gpio pin must change its status on a
interrupt
driven condition.
How the gpio driver can be implemented in wince.
please help me.








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