SKS7G2 PWM reference project

Is any one has example project/sample code how generate PWM to control Servo motors.  I wanted to one of the Ardunio mapped GPIO to connect PWM of Servo pin.

I have Tower Pro Micro servo 99 SG90

Partly I understand that I need to use one GPT timer callback function to generate PWM to rotate servo 0 degrees to 180. Need help to learn generate PWM to control some of this motors.

Thanks