binary frequency square wave generation

O.A.A.

Hello All,
Can anyone suggest a way to generate a binary frequency square wave on propellor. That is first to generate a square wave of a given frequency for a given duration on a given pin. This I can do using CTRx, FRQx, and PHSx registers. What I need help for is the second part. That is the square wave is to continue without any interruption or phase shift with a new frequency (say f+1000) on the same pin for a new given duration.
O.A.Ardali

Tracy Allen

What order of frequencies and durations are we talking about?

O.A.A.

40-41 kHz for 10 pulses each

Mark_T

For phase-continuous changes in frequency just change FRQx register, assuming using standard NCO mode.

O.A.A.

Thanks Mark. Problem solved.