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How to use GPIOs

350 bytes removed, 15:32, 9 January 2012

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= Install binaries via IGEP<br> =

Log with root user to install binaries.

=== Install module ===

Check that user-gpio-drv.ko is currently loaded with the following command:

<pre>lsmod</pre>

The result will be similar than this:<pre>root@localhost:~/svn.hylands.org/linux/gpio/module# lsmod

Module Size Used by

user_gpio_drv 1639 0

rtc_core 11187 1 rtc_twl

twl4030_keypad 2970 0

</pre>

The module is loaded until system halt.

libc.so.6 => /lib/libc.so.6 (0x401a0000)

/lib/ld-linux.so.3 (0x4008a000)

</pre>

Now you can execute example program gpio.

~~=== Execute app<br> ===~~

~~Go to:$/svn.hylands.org/linux/gpio/app, gpio will be found here.~~

~~To make sure that libgpio.so can be founded as a dependency of gpio program use the following command:~~

~~<pre> ldd gpio~~

~~</pre>~~

~~See if libgpio.so is found it. If you execute program in bash without linking library dependencies, bash give you a error message.~~

= Testing driver =

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