How to save my static IP address?

Hi I changed my IP address using connmanctl cmd as below link.
(https://rocketboards.org/foswiki/Documentation/SettingAStaticIPAddressInAngstrom?validation_key=5f8c91eb7f0ff126d433d1ddbf1eaa48)
I want to use static IP and save this configuration. But after reset the IP address is reset and I should set IP again manually.

How to save this configuration? I want to use fixed IP after reset.

my version is 2015.12 aungstrom

Thanks

Hi guys I cleared this issue.
I used rc-local service and /etc/rc.local file. You can go find on google this service.

I wrote ifconfig eth0 inet 192.168.0.x netmask 255.255.255.0
in rc.local file.

When every boot up sequence, ifconfig cmd in rc.local file automatically executed.

I wish this method helpful for you guys.

Thanks.