Code to setup timer

Hello, hoping someone could help. I'm wanting to use an 16 bit timer on an Uno, and want it to call an interrupt function each overflow. I'll need to use an 2x prescaler and reset to 230 ticks rather than zero each overflow. I've done the maths but can't physically see how to setup the timer. Land create the interrupt function!! Any help appreciated.

Chris

Look here, some time ago I discussed a similar problem.

You can make use of the timer library mentioned here Arduino Playground - HomePage.