[time-nuts] frequency generation algorithm.

[Dan Kemppainen]

Hi,

Quick question to the group, maybe slightly of topic.

I'm looking for a quick and dirty algorithm or method to generate a 
pulse train at arbitrary frequencies based on a fixed clock source.
This will be run as code in a timer ISR in a microcontroller, so some 
calculations can be done. Ideally the division ratio could be changed, 
say from 100% to 0% of the master frequency. Frequency resolution is not 
highly critical, however it would be very nice to have a 'dithered' 
answer for odd ratios. Ideally the pulses in the pulse train would be as 
evenly space as possible.

Any ideas, search terms, code examples are all welcome!

Thanks!
Dan