I want to control EINT0/GPH0_0

Hi guys.
Thanks for your reading.
I am WanChao of cosmosoft.
I want to connect the new device to Mini210 GPIO ports.
I saw the GPIO ports of Friendlyarm mini210.
In there, i want to control the XEINT0/GPH0_0 with output.
I found the /sys/class/gpio/gpiochipN.
echo xx > /sys/class/gpio/export
Here i don't know what is xx.
Please help me!
I want to control the XEINT0/GPH0_0 of GPIO port.

Best regards.

WanChao

This should help with the process:
http://www.avrfreaks.net/wiki/index.php/Documentation:Linux/GPIO

Hi davef

Thanks for your reply.
It works fine now. :)

Best regards.
WanChao