Charge Amp Frequency

The problem is you can normally only change the state of a parallel port pin once per thread cycle. You are turning it on one cycle then the next thread cycle you are turning it off. The exception to that is when you use reset. In that case the pin is changed at the start of the cycle, then changed back after the specified reset time. The downside of using the reset is nothing else gets done while counting down the reset time (I might be wrong about this).

This is getting way too complicated

Why not just set your base thread to 24 KHz, (41666 ns) and see if the chargepump actually works

If it is in fact a real chargepump (not a ucontroller based watchdog that senses frequency)
it will be largely insensitive to the exact frequency used.

If it does indeed sense frequency, then you should be able to use the fastest basethread
you can and generate a 12 KHz ~square wave with a stepgen running in velocity mode

Hi tried setting the base thread to 41666 with no luck, will try the SIGGEN at some time but for now have disabled to charge-pump circuit.

Thanks for everyone's help

Steve